Navegação Periódicos - Artigos por assunto "water treatment"

Classificar por: Ordenar: Resultados:

  • IPEN-DOC 06838

    PETRONI, S.L.G.; PIRES, M.A.F. ; SEPULVEDA MUNITA, C.J.A. . Adsorcao de zinco e cadmio em colunas de turfa. Química Nova, v. 23, n. 4, p. 477-481, 2000.

    Palavras-Chave: peat; adsorption; zinc; zinc 65; cadmium; cadmium 115; ph value; interfering elements; waste processing; water treatment

    Como referenciar este item
    Icon

  • IPEN-DOC 27366

    COELHO, EDNEI; REIS, TATIANA A.; COTRIM, MARYCEL ; RIZZUTTO, MARCIA; CORREA, BENEDITO. Bioremediation of water contaminated with uranium using Penicillium piscarium. Biotechnology Progress, v. 36, n. 5, p. 1-8, 2020. DOI: 10.1002/btpr.3032

    Abstract: Penicillium piscarium can be indicated as promising in the treatment of sites contaminated with uranium. Thus, this research aimed to analyze the P. piscarium dead biomass in uranium biosorption. This fungus was previously isolated from a highly contaminated uranium mine located in Brazil. Biosorption tests were carried out at pH 3.5 and 5.5 in solutions contaminated with concentrations of 1 to 100 mg/L of uranium nitrate. Our results showed that the dead biomass of P. piscarium was able to remove between 93.2 and 97.5% uranium from solutions at pH 3.5, at the end of the experiment, the pH of the solution increased to values above 5.6. Regarding the experiments carried out in solutions with pH 5.5, the dead biomass of the fungus was also able to remove between 38 and 92% uranium from the solution, at the end of the experiment, the pH of the solution increased to levels above 6.5. The analysis of electron microscopy, Energy-dispersive spectroscopy, and X-ray fluorescence demonstrated the high concentration of uranium precipitated on the surface of the fungal biomass. These results were impressive and demonstrate that the dead biomass of P. piscarium can be an important alternative to conventional processes for treating water contaminated with heavy metals, and we hope that these ecofriendly, inexpensive, and effective technologies be encouraged for the safe discharge of water from industrial activities.

    Palavras-Chave: bioremediation; penicillium; uranium; waste water; absorption; biomass; contamination; fungi; water treatment

    Como referenciar este item
    Icon

  • IPEN-DOC 26928

    SANTOS, A.S.; BITTENCOURT, C. . Depollution of rivers and lakes. European Journal of Sustainable Development, v. 6, n. 3, p. 430-438, 2017. DOI: 10.14207/ejsd.2017.v6n3p430

    Abstract: The need to control pollution is a relevant environmental issue in Brazil, and in the world. Population growth demands a greater exploitation of natural resources, in many cases, above the natural recovery capacity of ecosystems. The decontamination of a river or lake involves, among other forms of intervention, the management of sanitation services, thus allowing the qualitative improvement of water resources. The progressivity of the supply of sanitation infrastructure will allow the attendance of the regular areas with collection and treatment of sewage. On the other hand, in order to achieve their goals, it is also necessary to address the social issue, the precarious housing, and especially the irregularly settled ones, which demand greater efforts to provide sanitation services.

    Palavras-Chave: lakes; rivers; water pollution; water pollution monitors; liquid wastes; water treatment; waste management; pollution laws; legislation; environment; brazil

    Como referenciar este item
    Icon

  • IPEN-DOC 28327

    GASPER, RENATO R. ; SOMESSARI, SAMIR L. ; SPRENGER, FRANCISCO E. ; FEHER, ANSELMO ; DUARTE, CELINA L. ; SAMPA, MARIA H. de O. ; LAINETTI, FABIANA de F. ; BRAGA, ALCIDES; RODRIGUES, MARCOS de M.; CALVO, WILSON A.P. . Developing an electrical power system of a mobile electron beam accelerator to treat wastewater and industrial effluents / Desenvolvimento de um sistema de energia elétrica de um acelerador móvel de feixe de elétrons para tratar águas residuais e efluentes industriais. Brazilian Journal of Development, v. 7, n. 11, p. 102366-102379, 2021. DOI: 10.34117/bjdv7n11-046

    Abstract: The treatment of wastewater and industrial effluents by electron beam irradiation is a promising technique, however, not very widespread in Brazilian territory. The design and construction of a mobile unit by the Nuclear and Energy Research Institute, containing an electron beam accelerator of 700 keV and 20 kW is innovative to demonstrate the effects and positive results of this technology. The aim is to transfer the mobile unit to several companies with interest in liquid waste treatment, connect to the industry electrical system and start the ionization treatment process through electron beam. The mobile unit connection to the local electrical system may be a challenge due to the great diversity of voltages and distances involved, as well as the large injections of harmonic content generated by the electron beam accelerator that can affect sensitive loads in the industrial system. In this work, an analysis of the electrical power system of the mobile unit was made, regarding the interruption capacity, selectivity protection and adequate short circuit levels, in order to assure a greater reliability in the operation. At the end, the control panel of the mobile unit, simulations and measurements were carried out at the 1.5 MeV and 37.5 kW electron beam accelerator, installed in the Radiation Technology Center, demonstrating the necessity of applying a filter to reduce the measured harmonic distortion. The analysis of the mobile unit electrical power system was made, in order to assure a greater reliability in the operation.

    Palavras-Chave: water treatment; waste water; liquid wastes; electrical engineering; power systems; electron beams

    Como referenciar este item
    Icon

  • IPEN-DOC 28430

    PALHARIM, PRISCILA H.; FUSARI, BEATRIZ L.D. dos R.; RAMOS, BRUNO; OTUBO, LARISSA ; TEIXEIRA, ANTONIO C.S.C.. Effect of HCl and HNO3 on the synthesis of pure and silver-based WO3 for improved photocatalytic activity under sunlight. Journal of Photochemistry and Photobiology A: Chemistry, v. 422, p. 1-12, 2022. DOI: 10.1016/j.jphotochem.2021.113550

    Abstract: Heterogeneous photocatalysis have been considered an important and efficient alternative water and wastewater treatment process. In this area, different semiconductors, such as tungsten trioxide, have been investigated aiming to enhance photocatalytic performance. WO3 is known to be an efficient material with high stability in acidic conditions. In the present work, pure and Ag/AgCl-doped WO3 photocatalysts were synthesized by a simple hydrothermal method. A discussion of the effects of two pH-controlling agents, HCl and HNO3, in the final properties of the catalyst is reported for the first time. The materials were characterized by XRD, BET, SEM, EDS and UV–vis DRS. All catalysts showed similar or enhanced band gap values compared to a standard photocatalyst benchmark (TiO2 P25). The type of acid did not lead to significant differences in morphology or photocatalytic activity of undoped catalysts. In contrast, doped catalysts prepared using HCl resulted in particles of flower-like morphology, with higher uniformity and slightly narrower band gap values. Furthermore, the use of HCl in the synthesis of silver-doped WO3 resulted in catalysts containing AgCl, while Ag0 was the major dopant species when HNO3 was used. All materials exhibited good photocatalytic activity, with a maximum of 75.4% acetaminophen degradation under simulated sunlight achieved by the catalyst prepared with HCl and doped with 5% Ag-equivalent. For this catalyst, the degradation kinetics was found to be consistent with the Langmuir-Hinshelwood (L−H) model, and reusability tests showed no significant decrease in the degradation efficiency after four cycles. Finally, the effects of different scavengers suggest that O2•− species play a major role in acetaminophen degradation with the material containing WO3, Ag and AgCl.

    Palavras-Chave: photocatalysis; doped materials; hydrothermal synthesis; waste water; water treatment; heterogeneous catalysis

    Como referenciar este item
    Icon

  • IPEN-DOC 29694

    SILVESTRIN, G.A. ; GONCALVES, M.H. ; GODOI, C.M. ; MAIA, V.A. ; FERREIRA, J.C. ; GUILHEN, S.N. ; NETO, A.O. ; SOUZA, R.F.B. de . Effective phosphate removal from water by electrochemically mediated precipitation with coffee grounds biocarbon obtained by non-thermal plasma method. The Academic Society Journal, v. 7, n. 1, p. 3-12, 2023. DOI: 10.32640/tasj.2023.1.3

    Abstract: This study investigates the use of biocarbon electrodes, produced from coffee grounds through plasma pyrolysis, in the electrochemically mediated precipitation process for phosphorus removal in a flow reactor. The structural and electrochemical properties of biocarbon were analyzed using X-ray powder diffraction (XRD), Raman spectroscopy, and cyclic voltammetry. The results show that biocarbon consists of both graphene oxide and lignocellulose with surface OH groups that facilitate the breakdown of water, a key step in the electrochemically mediated precipitation process for phosphorus removal. The addition of graphite to the biocarbon paste was found to be necessary to obtain a response from the biocarbon in cyclic voltammetry. The Gr75BC25 electrode achieved higher phosphorus removal rates than other tested electrodes, particularly at low flows, due to the functional groups present in biocarbon enhancing the breakdown of water. However, electrodes with a greater amount of biocarbon exhibit lower rates of phosphorus removal and higher consumption of electrical power, which can be attributed to their higher electrical resistivity. Thus, to optimize its use, it is important to balance the benefits of increased phosphorus removal rates with the trade-off of increased energy consumption and decreased phosphorus removal at higher levels of biocarbon. The results suggest that biocarbon produced from coffee grounds by plasma pyrolysis has the potential to be used as an effective electrode material for electrochemically mediated precipitation processes.

    Palavras-Chave: electrochemistry; synthesis; phosphates; removal; carbon; water treatment

    Como referenciar este item
    Icon

  • IPEN-DOC 24858

    BARBOSA, ANDREA Q.; SILVA, ROMULO A.S.; PIRES, MARIA A.F. ; LIMA, ALVARO S.; MADI, RUBENS R.; MARQUES, MARIA N.. Elaboration of the water safety plan in a water supply system in the brazilian northeast. International Journal of Development Research, v. 8, n. 2, p. 18810-18815, 2018.

    Abstract: The Water Safety Plan is a tool used to identify, assess and manage health risks related to any water supply system. In order to do so, a study was carried out in a supply system, located in the northeast of Brazil, composed by Fountain Caldas (P1) and Well Cipó (P2), as sources of raw water abstraction, and by the Distribution Reservoir (P3) treated. Water collection, land use and land use assessment and analysis of possible risks were carried out in the vicinity of these three points and in another site (P4) to obtain the treated water. The quality of the raw water was evaluated by the parameters of the Resolution of the Conselho Nacional do Meio Ambiente n° 396/2008 and the water treated according to the parameters of Ordinance nº 2914/2011 of the Ministry of Health. Observing the probability of occurrence of risk and the severity of consequence of the events. Therefore, 17 control points with low rating were detected, and two with moderate rating. Control measures were suggested for each identified critical point, mainly related to water quality monitoring and system maintenance.

    Palavras-Chave: water; water treatment; water quality; water supply; safety; planning; measuring methods; management

    Como referenciar este item
    Icon

  • IPEN-DOC 29627

    TOMINAGA, FLAVIO K. ; BOIANI, NATHALIA F. ; SILVA, THALITA T. ; SANTOS, JONAS G. dos; LEBRE, DANIEL T. ; LEO, PATRICIA; BORRELY, SUELI I. . Electron beam irradiation applied for the detoxification and degradation of single ciprofloxacin aqueous solution and multiclass pharmaceutical quaternary mixture. Separation and Purification Technology, v. 307, p. 1-9, 2023. DOI: 10.1016/j.seppur.2022.122818

    Abstract: The application of electron beam irradiation for detoxification and degradation of single antibiotic ciprofloxacin (CPF) and in a mixture with multiclass pharmaceuticals in aqueous solutions was carried out. Ecotoxicity assays indicated that the green algae were most sensitive to antibiotic and also that the presence of several pharmaceutical increased the toxicity. After the irradiation treatment, degradation results of single antibiotic indicated reduction of 95.86 % at 1.0 kGy. Total organic carbon decreased up to 38 % at 5.0 kGy. At lower doses (1.0 kGy), no effect in toxicity was evidenced, however, increase in toxicity for Vibrio fischeri was observed after 2.5 kGy. For Daphnia similis exposure, an increase in toxicity was noted for all applied doses. In contrast, for the green algae R. subcapitata toxicity reduction varied from 62.3 to 81.9 % at the evaluated doses. Toxicity assays to microbes E. coli and S. aureus reduced antibacterial activity of CPF after irradiation treatment. Regarding the irradiated quaternary mixture at 2.5 kGy, reduction up to 96 % was achieved for the ciprofloxacin, metformin and acetylsalicylic acid, and 81 % removal was achieved for fluoxetine. Acute assays with V. fischeri indicated no increase in toxicity, while some increase was noted for D. similis (acute effects). Nevertheless, chronic assays data indicated low toxicity reduction (14 %) with D. similis, and complete detoxification was shown for the green algae after the irradiation. In addition, decrease in antimicrobial activity was noted after the treatment. Furthermore, the in-silico model was not enough accurate for the prediction of CIP toxicity. These findings showed that electron beam irradiation can be applied for reducing the impacts of antibiotics in aquatic ecosystem. Measuring toxicity on living-organism from different trophic levels are useful tools to evaluate the interaction of mixtures and also to assess toxicity of the generated byproducts.

    Palavras-Chave: electron beams; antibiotics; toxicity; drugs; water pollution; water treatment; irradiation

    Como referenciar este item
    Icon

  • IPEN-DOC 26658

    BOIANI, N.F. ; SILVA, V.H.O.; GARCIA, V.S.G. ; DEL SOLE, S.V. ; BORRELY, S.I. . Electron beam irradiation of pharmaceuticals aiming at toxicity reduction: a binary mixture of fluoxetine and propranolol. Ecotoxicology and Environmental Contamination, v. 14, n. 1, p. 53-58, 2019. DOI: 10.5132/eec.2019.01.06

    Abstract: Significant evidence is available in the literature justifying the search for treatment technologies or process combinations to improve the decomposition of dozens of pharmaceuticals in wastewater. Conventional processing techniques are insufficient in removal of the pharmaceuticals, for having resistant waste and low biodegradability. Electron beam irradiation (EBI) may play an important role in this context, and relatively low doses have been reported for such purposes. The objective of this study was to apply the process of irradiation with electron beam in order to reduce the toxic effects of fluoxetine, propranolol, and a binary mixture of these pharmaceuticals in aqueous solution. Ecotoxicological tests conducted in two model organisms, Daphnia similis microcrustacean, and Vibrio fischeri bacterium. It was observed that D. similis was more sensitive to the pharmaceuticals and binary mixture, when compared to V. fischeri. When EBI was applied, all doses showed significant reduction of toxicity for D. similis, and the opposite for V. fischeri, when only 5.0 kGy showed a significant reduced of toxicity for the pharmaceuticals and binary mixture. 5.0 kGy was the best removal efficiency for toxicity, approximately 80% for D. similis and 20% for V. fischeri.

    Palavras-Chave: electron beams; irradiation; waste water; drugs; pollutants; pollution sources; removal; water treatment; chemical analysis; toxic materials; daphnia; bacteria; aquatic organisms

    Como referenciar este item
    Icon

  • IPEN-DOC 25766

    BORRELY, S.I. ; SILVA, L.G.A. ; DEL SOLE, S.V. ; GARCIA, V.S.G. ; BOIANI, N.F. ; ROSA, J.M. . Electron beam irradiation of textile effluents and non-ionic ethoxylated surfactant for toxicity and color removal. Brazilian Journal of Radiation Sciences, v. 7, n. 2A, p. 1-10, 2019. DOI: 10.15392/bjrs.v7i2A.702

    Abstract: Textile industry has an expressive scenario in the world economy and Brazil is the 5th in the textile production. By 2015, Brazilian textile production represented US $ 39.3 billion, accounting for more than 1.8 million tons of fabric. The effluents from textile industry are highlighted by quantity of wastewater discharged and variety of substances (dyes, bleaching agents, surfactants, salts, acids, among others). Such compounds often prove to be toxic to aquatic biota. This present study aims to assess toxicity of whole effluents, before and after irradiation (by electron beam accelerator, EBI). In addition, the reduction of the effluent color after irradiation is also very important. Daphnia similis and Vibrio fischeri were the biological systems applied for toxicity evaluations. Previous results demonstrated the surfactant as the main toxic compound, in the untreated and irradiated forms, EC 50 = 0.44 ppm ± 0.02 (untreated); EC 50 = 0.46 % ± 0.07 (irradiated). The irradiation was effective for reducing color of the effluent, starting from 0.5 kGy. EB irradiation may be proposed as an alternative treatment for the final effluent from textile processing, mainly for reuse purposes.

    Palavras-Chave: textile industry; color; chemical effluents; toxicity; ethoxy radicals; removal; surfactants; waste processing; waste water; water treatment; irradiation; electron beams; bacteria; crustaceans

    Como referenciar este item
    Icon

  • IPEN-DOC 25723

    BORRELY, S.I. ; ROSA, J.M. ; BOIANI, N.F. ; GARCIA, V.S.G. ; SOUSA, A.L. . Emerging pollutants, related toxicity, and water quality decreasing: tannery, textile, and pharmaceuticals load pollutants. Biology, Engineering and Medicine, v. 3, n. 6, p. 1-6, 2018. DOI: 10.15761/BEM.1000157

    Abstract: The quality of drinking water is decreasing in distinct parts of the globe. Among the major sources of aquatic environmental pollution we have tannery wastewaters (TW). Pharmaceuticals into waters are reported as emerging pollutants and both of them are also related to surfactants and dyes usage during the manufacture. TW was the worst in terms of toxicity and organic matter, referred as chemical oxygen demand, when compared to surfactants, textile and pharmaceuticals considered in the present study. From the five surfactants alkylene oxide was relatively more toxic than the others to dafnids. The intention of the selected results, figures and discussion was to highlight so wide types and ways for water contamination as well as to demonstrate health and ecological risks related to effluent emissions by different productive sectors. When excessive amount of pollutants are introduced into the rivers they may reduce their biodegradation dynamics, reducing aquatic life diversity and relevant ecological services. Some important contributions to improve effluents control and treatment have also been discussed.

    Palavras-Chave: water pollution; waste water; chemical effluents; water treatment; dyes; textile industry; chemical wastes; surfactants; water pollution control

    Como referenciar este item
    Icon

  • IPEN-DOC 09939

    ROMANELLI, M.F.; MORAES, M.C.F.; VILLAVICENCIO, A.L.C.H. ; BORRELY, S.I. . Evaluation of toxicity reduction of sodium dodecyl sulfate submitted to electron beam radiation. Radiation Physics and Chemistry, v. 71, n. 1/2, p. 409-411, 2004.

    Palavras-Chave: bacteria; daphnia; detergents; electron beams; ionizing radiations; irradiation; sulfates; toxicity; waste management; water treatment

    Como referenciar este item
    Icon

  • IPEN-DOC 16993

    OTOMO, JULIANA I.; MARTINS, ELAINE A.J. ; FURUSAWA, H.A. ; COTRIM, MARYCEL E.B. ; PIRES, MARIA A.F. . Monitoramento de hormônios em estações de tratamento de águas no Vale do Paraíba, SP. Desenvolvimento e validação de metodologia analítica. Revista Brasileira de Pesquisa e Desenvolvimento, v. xx, n. xx, p. xx-xx, 2011.

    Palavras-Chave: brazil; water supply; endocrine diseases; hormones; drinking water; gas chromatography; sample preparation; waste water; water treatment

    Como referenciar este item
    Icon

  • IPEN-DOC 26485

    BENTO, RODRIGO T. ; CORREA, OLANDIR V. ; PILLIS, MARINA F. . Photocatalytic activity of undoped and sulfur-doped TiO2 films grown by MOCVD for water treatment under visible light. Journal of the European Ceramic Society, v. 39, n. 12, p. 3498-3504, 2019. DOI: 10.1016/j.jeurceramsoc.2019.02.046

    Abstract: Titanium dioxide ceramic coatings have been used as catalysts in green technologies for water treatment. However, without the presence of a dopant, its photocatalytic activity is limited to the ultraviolet radiation region. The photocatalytic activity and the structural characteristics of undoped and sulfur-doped TiO2 films grown at 400 °C by metallorganic chemical vapor deposition (MOCVD) were studied. The photocatalytic behavior of the films was evaluated by methyl orange dye degradation under visible light. The results suggested the substitution of Ti4+ cations by S6+ ions into TiO2 structure of the doped samples. SO4 2− groups were observed on the surface. S-TiO2 film exhibited good photocatalytic activity under visible light irradiation, and the luminous intensity strongly influences the photocatalytic behavior of the S-TiO2 films. The results supported the idea that the sulfur-doped TiO2 films grown by MOCVD may be promising catalysts for water treatment under sunlight or visible light bulbs.

    Palavras-Chave: titanium oxides; photocatalysis; ceramics; surface coating; sulfur; doped materials; chemical vapor deposition; dyes; hydrogen sulfates; water treatment

    Como referenciar este item
    Icon

  • IPEN-DOC 20712

    SILVA, MARCELA P.; BATISTA, ANA P. dos S.; BORRELY, SUELI I. ; SILVA, VANESSA H.O. ; TEIXEIRA, ANTONIO C.S.C.. Photolysis of atrazine in aqueous solution: role of process variables and reactive oxygen species. Environmental Science and Pollution Research, v. 21, n. 21, p. 12135-12142, 2014.

    Palavras-Chave: herbicides; photolysis; atrazine; aqueous solutions; water treatment; waste water; photon emission; oxygen; toxicity

    Como referenciar este item
    Icon

  • IPEN-DOC 13676

    SAMPA, MARIA H.O. ; TAKACS, ERZSEBET; GEHRINGER, PETER; RELA, PAULO R. ; RAMIREZ, TRAJANO; AMRO, HASAM; TROJANOWICZ, MAREK; BOTELHO, MARIA L.; HAN, BUMSOO; SOLPAN, DILEK; COOPER, WILLIAM J.; EMMI, SALVATORE S.; WOJNAROVITS, LASZLO. Remediation of polluted waters and wastewater by radiation processing. Nukleonika, v. 52, n. 4, p. 137-144, 2007.

    Palavras-Chave: decomposition; drinking water; dyes; electron beams; pesticides; ionizing radiations; waste water; water quality; water treatment

    Como referenciar este item
    Icon

  • IPEN-DOC 20311

    FUNGARO, DENISE A. ; BORRELY, SUELI I. ; HIGA, MARCELA . Removal of color from industrial effluents by adsorption using unmodified and surfactant - modified zeolite from cyclone ASH / Remoção de cor de efluentes industriais por adsorção usando zeolita de cinzas ciclone não modificada e modificada por surfactante. Periódico Tchê Química, v. 11, n. 22, p. 7-14, 2014.

    Palavras-Chave: water treatment; zeolites; coal; ashes; dyes; ammonium compounds; bromine compounds; surfactants; color; removal; texture

    Como referenciar este item
    Icon

  • IPEN-DOC 28814

    COELHO, EDNEI; REIS, TATIANA A.; COTRIM, MARYCEL ; MULLAN, THOMAS K.; RENSHAW, JOANNA; RIZZUTTO, MARCIA; CORREA, BENEDITO. Talaromyces amestolkiae uses organic phosphate sources for the treatment of uranium‑contaminated water. Biometals, v. 35, n. 2, p. 335-348, 2022. DOI: 10.1007/s10534-022-00374-9

    Abstract: Fungi have received particular attention in regards to alternatives for bioremediation of heavy metal contaminated locales. Enzymes produced by filamentous fungi, such as phosphatases, can precipitate heavy metal ions in contaminated environments, forming metal phosphates (insoluble). Thus, this research aimed to analyze fungi for uranium biomineralization capacity. For this, Gongronella butleri, Penicillium piscarium, Rhodotorula sinensis and Talaromyces amestolkiae were evaluated. Phytate and glycerol 2-phosphate were used as the phosphate sources in the culture media at pH 3.5 and 5.5, with and without uranium ions. After 4 weeks of fungal growth, evaluated fungi were able to produce high concentrations of phosphates in the media. T. amestolkiae was the best phosphate producer, using phytate as an organic source. During fungal growth, there was no change in pH level of the culture medium. After 3 weeks of T. amestolkiae growth in medium supplemented with phytate, there was a reduction between 20 and 30% of uranium concentrations, with high precipitation of uranium and phosphate on the fungal biomass. The fungi analyzed in this research can use the phytic acid present in the medium and produce high concentrations of phosphate; which, in the environment, can assist in the heavy metal biomineralization processes, even in acidic environments. Such metabolic capabilities of fungi can be useful in decontaminating uranium-contaminated environments.

    Palavras-Chave: fungi; water treatment; waste water; uranium; phosphates; organic compounds; bioadsorbents

    Como referenciar este item
    Icon

  • IPEN-DOC 24785

    SALLES, FERNANDA J.; SATO, ANA P.S.; LUZ, MACIEL S.; FAVARO, DEBORAH I.T. ; FERREIRA, FRANCISCO J.; PAGANINI, WANDERLEY da S.; OLYMPIO, KELLY P.K.. The environmental impact of informal and home productive arrangement in the jewelry and fashion jewelry chain on sanitary sewer system. Environmental Science and Pollution Research, v. 25, n. 11, p. 10701-10713, 2018. DOI: 10.1007/s11356-018-1357-z

    Abstract: The outsourcing informal home practices adopted in jewelry and fashion jewelry chain can cause toxic substance elimination in the effluents and raise a concern for its environmental impact. This study evaluates if this informal work alters the concentration of potentially toxic elements (PTEs: As, Cd, Cr total and Cr-VI, Cu, Hg, Ni, Pb, Sn, and Zn) in the sewage network. The sanitary sewage samples (n = 540) were collected in 15 manholes during two campaigns in three different areas of Limeira-SP, Brazil (industrial area, with informal work and without known industrial/informal activity). The sewage sludge (n = 12), raw (n = 12), and treated sewage (n = 12) were collected in two wastewater treatment plants (WWT: AS and TATU) operating with different treatment process. The PTE determination was performed by ICP-OES, direct mercury analysis, and UV-Vis spectroscopy. Cr-VI, Cu, Ni, and Zn were the only elements above the quantification limit. Four samples exceeded Cu or Zn values permitted to be discharged into sewage system; however, the concentration average was lower than that established by Brazilian legislation. A difference was found between values above and below the 75th percentile for campaign and total organic carbon values (p < 0.015). The AS-treated sewage presented low concentrations of Cu (p < 0.05), Zn (p = 0.02), and Ni (p = 0.01) compared to treated sewage from TATU. In the sludge samples, the Cu means exceeded the limits of the Brazilian legislation (1500 mg kg(-1)) and the Zn results were very close to the limits (2800 mg kg(-1)). The heterogeneity of the results can indicate the sporadic nature of the PTE's sanitary disposal. PTEs used in jewelry and fashion jewelry chain may precipitate on the sludge, where presented high concentrations of Cu and Zn which require controlled destination.

    Palavras-Chave: environmental impacts; ecological concentration; emission spectroscopy; waste water; legislation; water treatment; comparative evaluations; waste water; zinc; sewage sludge; concentration ratio; mercury; brazil; sampling

    Como referenciar este item
    Icon

  • IPEN-DOC 06012

    SAMPA, M.H.O. ; BORRELY, S.I. ; SILVA, B.L.R.; VIEIRA, J.M. ; RELA, P.R. ; CALVO, W.A.P. ; NIETO, R.C.; DUARTE, C.L. ; BANADOS PEREZ, H.E. ; SOMESSARI, E.S.R. ; LUGAO, A.B. . The use of electron beam accelerator for the treatment of drinking water and wastewater in Brazil. Radiation Physics and Chemistry, v. 46, n. 4-6, p. 1143-1146, 1995.

    Palavras-Chave: drinking water; waste water; sterilization; water treatment; electron beams; accelerators

    Como referenciar este item
    Icon

A pesquisa no RD utiliza os recursos de busca da maioria das bases de dados. No entanto algumas dicas podem auxiliar para obter um resultado mais pertinente.

✔ É possível efetuar a busca de um autor ou um termo em todo o RD, por meio do Buscar no Repositório , isto é, o termo solicitado será localizado em qualquer campo do RD. No entanto esse tipo de pesquisa não é recomendada a não ser que se deseje um resultado amplo e generalizado.

✔ A pesquisa apresentará melhor resultado selecionando um dos filtros disponíveis em Navegar

✔ Os filtros disponíveis em Navegar tais como: Coleções, Ano de publicação, Títulos, Assuntos, Autores, Revista, Tipo de publicação são autoexplicativos. O filtro, Autores IPEN apresenta uma relação com os autores vinculados ao IPEN; o ID Autor IPEN diz respeito ao número único de identificação de cada autor constante no RD e sob o qual estão agrupados todos os seus trabalhos independente das variáveis do seu nome; Tipo de acesso diz respeito à acessibilidade do documento, isto é , sujeito as leis de direitos autorais, ID RT apresenta a relação dos relatórios técnicos, restritos para consulta das comunidades indicadas.

A opção Busca avançada utiliza os conectores da lógica boleana, é o melhor recurso para combinar chaves de busca e obter documentos relevantes à sua pesquisa, utilize os filtros apresentados na caixa de seleção para refinar o resultado de busca. Pode-se adicionar vários filtros a uma mesma busca.

Exemplo:

Buscar os artigos apresentados em um evento internacional de 2015, sobre loss of coolant, do autor Maprelian.

Autor: Maprelian

Título: loss of coolant

Tipo de publicação: Texto completo de evento

Ano de publicação: 2015

✔ Para indexação dos documentos é utilizado o Thesaurus do INIS, especializado na área nuclear e utilizado em todos os países membros da International Atomic Energy Agency – IAEA , por esse motivo, utilize os termos de busca de assunto em inglês; isto não exclui a busca livre por palavras, apenas o resultado pode não ser tão relevante ou pertinente.

✔ 95% do RD apresenta o texto completo do documento com livre acesso, para aqueles que apresentam o significa que e o documento está sujeito as leis de direitos autorais, solicita-se nesses casos contatar a Biblioteca do IPEN, bibl@ipen.br .

✔ Ao efetuar a busca por um autor o RD apresentará uma relação de todos os trabalhos depositados no RD. No lado direito da tela são apresentados os coautores com o número de trabalhos produzidos em conjunto bem como os assuntos abordados e os respectivos anos de publicação agrupados.

✔ O RD disponibiliza um quadro estatístico de produtividade, onde é possível visualizar o número dos trabalhos agrupados por tipo de coleção, a medida que estão sendo depositados no RD.

✔ Na página inicial nas referências são sinalizados todos os autores IPEN, ao clicar nesse símbolo será aberta uma nova página correspondente à aquele autor – trata-se da página do pesquisador.

✔ Na página do pesquisador, é possível verificar, as variações do nome, a relação de todos os trabalhos com texto completo bem como um quadro resumo numérico; há links para o Currículo Lattes e o Google Acadêmico ( quando esse for informado).

ATENÇÃO!

ESTE TEXTO "AJUDA" ESTÁ SUJEITO A ATUALIZAÇÕES CONSTANTES, A MEDIDA QUE NOVAS FUNCIONALIDADES E RECURSOS DE BUSCA FOREM SENDO DESENVOLVIDOS PELAS EQUIPES DA BIBLIOTECA E DA INFORMÁTICA.

O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.

A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

1. Portaria IPEN-CNEN/SP nº 387, que estabeleceu os princípios que nortearam a criação do RDI, clique aqui.


2. A experiência do Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP) na criação de um Repositório Digital Institucional – RDI, clique aqui.

O Repositório Digital do IPEN é um equipamento institucional de acesso aberto, criado com o objetivo de reunir, preservar, disponibilizar e conferir maior visibilidade à Produção Científica publicada pelo Instituto, desde sua criação em 1956.

Operando, inicialmente como uma base de dados referencial o Repositório foi disponibilizado na atual plataforma, em junho de 2015. No Repositório está disponível o acesso ao conteúdo digital de artigos de periódicos, eventos, nacionais e internacionais, livros, capítulos, dissertações, teses e relatórios técnicos.

A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.