Navegação Periódicos - Artigos por assunto "waste water"

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  • IPEN-DOC 17679

    COSTA, CAROLINE H.; SANTOS, BRUNO Z. dos; YAMAMURA, AMANDA P.G.; YAMAURA, MITIKO . Adsorption isotherm of uranyl ions by scales of corvina fish. International Journal of Nuclear Governance, Economic and Ecology, v. 3, n. 3, p. 280-286, 2011.

    Palavras-Chave: adsorption isotherms; adsorption; bioadsorbents; experimental data; fish scales; fishes; nitric acid; ph value; uranyl compounds; waste water

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  • IPEN-DOC 21710

    CUNICO, PATRICIA ; KUMAR, ANU; FUNGARO, DENISE A. . Adsorption of dyes from simulated textile wastewater onto modified nanozeolite from coal fly ash. Journal of Nanoscience and Nanoengineering, v. 1, n. 3, p. 148-161, 2015.

    Palavras-Chave: dyes; textiles; waste water; coal; fly ash; surfactants; adsorption; zeolites

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  • IPEN-DOC 13035

    CIDES da SILVA, L.C.; SANTOS, L.B.O. dos; ABATE, G.; COSENTINO, I.C. ; FANTINI, M.C.A.; MASINI, J.C.; MATOS, J.R.. Adsorption of Pbsup(3+), Cusup(2+) in FDU-1 silica and FDU-1 silica modified with humic acid. Microporous and Mesoporous Materials, v. 110, p. 250-259, 2008.

    Palavras-Chave: silica; porous materials; humic acids; waste water; cations

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  • IPEN-DOC 25111

    CUNICO, PATRICIA ; KUMAR, ANU; ALCANTARA, RAQUEL R. ; FUNGARO, DENISE A. . Adsorption of solophenyl dyes from aqueous solution by modified nanozeolite from bottom ash and its toxicity to C. dubia. Current Nanomaterials, v. 2, n. 2, p. 95-103, 2017. DOI: 10.2174/2405461503666180201152351

    Abstract: Background: It is known that wastewater from textile industries are responsible for producing large amounts of highly contaminated effluents by various types of synthetic dyes. These compounds can be toxic, and in some cases, are carcinogenic and mutagenic and its removal is recommended. Application: In the area of water purification, nanomaterials have been applied for removal of several compounds. Of the four classes of nanomaterials, zeolites have demonstrated good results for the removal of dyes. Nanozeolite synthesized from bottom ash and modified with hexadecyltrimethylamonium (ZMB) was used as adsorbent to removal of Solophenyl Navy (SN), Solophenyl Turquoise (ST) and their hydrolyzed forms (SNH and STH, respectively) from simulated textile wastewater. Method: The physical-chemical characterization of materials was presented by using relevant analytical methods (XRD, SEM, BET surface area, etc.). Effects of parameters such as initial dye concentration, contact time and equilibrium adsorption were evaluated. The adsorption kinetics followed the pseudo-second-order model. Results: Langmuir isotherm model shows the best fit for most dyes-ZMB systems. In order to identify if ZMB presented toxicity for the environment, bioassay and toxicity identification evaluation (TIE) with C. dubia were performed. The leached of ZMB was toxic to daphinids (11.3 TU). Conclusion: TIE results appointed that the main cause of the toxicity could be due the surfactant and metal ions presents in aqueous solution.

    Palavras-Chave: toxicity; textile industry; waste water; nanoparticles; zeolites; copper; dyes; adsorption

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  • IPEN-DOC 09109

    DUARTE, C.L. ; SAMPA, M.H.O. ; RELA, P.R. ; OIKAWA, H. ; SILVEIRA, C.G. ; AZEVEDO, A.L.. Advanced oxidation process by electron-beam-irradiation-induced decomposition of pollutants in industrial effluents. Radiation Physics and Chemistry, v. 63, n. 3/6, p. 647-651, 2002.

    Palavras-Chave: waste processing; industrial wastes; liquid wastes; waste water; irradiation; electron beams; oxidation; organic compounds; decomposition

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  • IPEN-DOC 07384

    DUARTE, C.L. ; SAMPA, M.H.O. ; RELA, P.R. ; OIKAWA, H. ; CHERBAKIAN, E.H.; SENA, H.C.; ABE, H.; SCIANI, V. . Application of electron beam irradiation combined to conventional treatment to treat industrial effluents. Radiation Physics and Chemistry, v. 57, n. 3/6, p. 513-518, 2000.

    Palavras-Chave: waste water; waste processing; industrial wastes; electron beams; organic compounds; decomposition; radiation doses; chemical analysis; carbon meters; chemical oxygen demand; biochemical oxygen demand; absorption spectra

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  • IPEN-DOC 19044

    HORTELLANI, MARCOS A. ; SARKIS, JORGE E.S. ; MENEZES, LUCIANA C.B.; YAMAGUISHI, RENATA B.; PEREIRA, ALDER S.A. ; GARCIA, PRISCILA F.G.; MARUYAMA, LIDIA S.; CASTRO, PAULA M.G. de. Assessment of metal concentration in the Billings Reservoir sediments, São Paulo state, southeastern Brazil. Journal of the Brazilian Chemical Society, v. 24, n. 1, p. 58-67, 2013.

    Palavras-Chave: brazil; water reservoirs; contamination; sediments; metals; industrial wastes; waste water; ecosystems; environmental impacts

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  • IPEN-DOC 17856

    HAMADA, N.; MESQUITA, L.C.A.; PEREIRA, I.W.; NAKANO, E.; BORRELY, S.I. ; TALLARICO, L.F.. Avaliação ecotoxicologica da estação de tratamento de esgotos Suzano (São Paulo) utilizando Daphnia similis e Vibrio fischeri. Journal of the Brazilian Society of Ecotoxicology, v. 6, n. 1, p. 31-35, 2011.

    Palavras-Chave: waste water; waste processing plants; sewage sludge; toxicity; bacteria; daphnia; fishes

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  • 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

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  • IPEN-DOC 25748

    SOUZA, ELIEL S. ; SILVA, PAULO S.C. . Co adsorption in kaolinite. Brazilian Journal of Radiation Sciences, v. 7, n. 2A, p. 1-15, 2019. DOI: 10.15392/bjrs.v7i2A.658

    Abstract: Adsorption of metal ions in clay minerals has been used as an alternative to water and effluents treatment. Kao-linite is a clay mineral that presents low specific surface area and exchange ion capacity. Nevertheless, structural modifications can be achieved by means of acid or thermal activation. In this paper, it was studied the surface area of kaolinite/bentonite, kaolinite/activated carbon mixtures, thermal activated kaolinite and thermal activat-ed kaolinite/activated carbon mixture. The mixture of kaolinite/activated carbon was tested for pH, contact time, interfering ions and initial concentration effects in the cobalt adsorption. Results showed that the optimized pa-rameters are pH 6 and contact time of 30 min. Chromium acted as a competitive ion, zinc does not appear to have affected adsorption while iron seems to have favored it. Langmuir and Freundlich isotherms indicated that the adsorption of Co in the mixture of kaolinite/activated carbon is a spontaneous process.

    Palavras-Chave: kaolinite; bentonite; cobalt ions; calcination; activated carbon; adsorption; interfering elements; mixtures; neutron activation analysis; ph value; surface area; waste water

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  • IPEN-DOC 11373

    LOPES, CRISTIANE N.; PETRUS, JOSÉ C.C.; RIELLA, HUMBERTO G.. Color and COD retention by nanofiltration membranes. Desalination, v. 172, p. 77-83, 2005.

    Palavras-Chave: waste water; industry; separation processes; membranes; ultrafiltration; color; chemical oxygen demand; fouling

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  • IPEN-DOC 19042

    RIBEIRO, ANDREZA P.; FIGUEIREDO, ANA M.G. ; SANTOS, JOSE O. dos; DANTAS, ELIZABETH ; COTRIM, MARYCEL E.B. ; FIGUEIRA, RUBENS C.L.; SILVA FILHO, EMMANOEL V.; WASSERMAN, JULIO C.. Combined SEM/AVS and attenuation of concentration models for the assessment of biovailability and modified of metals in sediments of Septiba Bay (SE Brazil). Marine Pollution Bulletin, v. 68, n. 12, p. 55-63, 2013.

    Palavras-Chave: brazil; coastal waters; bays; sediments; metals; cadmium; copper; nickel; lead; zinc; industrial wastes; waste water; aquatic ecosystems; environmental impacts

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  • IPEN-DOC 29133

    BORRELY, S.I. ; REDÍGOLO, M.M. ; VILLARD, B.D. ; LEBRE, D.T. ; TOMINAGA, F.K. . Degradation and toxicity of amoxicillin after electron beam irradiation. Brazilian Journal of Radiation Sciences, v. 10, n. 3B, p. 1-8, 2022. DOI: 10.15392/2319-0612.2022.1894

    Abstract: A recent and growing concern in environmental studies is the presence of antibiotics in wastewater, which contributes to antimicrobial resistance building. Amoxicillin, according to the World Health Organization, is one of the most consumed antibiotics worldwide, for being a first line therapy for common infections. Among several drug degradation methodologies, electron beam irradiation (EBI) is presented as an efficient and green treatment. This work presents data on amoxicillin degradation via EBI. Degradation rate was evaluated by LC/MS-MS, carbon removal efficiency was evaluated by TOC and ecotoxicity assays were performed employing Vibrio fischeri. Chromatographic results indicate an efficiency removal of 97.65% at 0.75 kGy and concentration below the limit of detection with increasing absorbed dose. Low mineralization (up to 10%) was achieved at 3.0 kGy. Regarding toxicity, approximately 81% of toxicity removal was obtained at 0.75 kGy and a decrease in efficiency was achieved with higher doses. In conclusion, results indicate the low doses (0.75 kGy) as most effective for drug removal employing EBI.

    Palavras-Chave: antibiotics; waste water; water pollution; toxicity; decomposition; detoxification; electron beams; ionizing radiations; irradiation

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  • IPEN-DOC 25144

    TOMINAGA, FLAVIO K. ; BATISTA, ANA P. dos S.; TEIXEIRA, ANTONIO C.S.C.; BORRELY, SUELI I. . Degradation of diclofenac by electron beam irradiaton: Toxicitiy removal, by-products identification and effect of another pharmaceutical compound. Journal of Environmental Chemical Engineering, v. 6, n. 4, p. 4605-4611, 2018. DOI: 10.1016/j.jece.2018.06.065

    Abstract: Water contamination by the anti-inflammatory drug diclofenac (DCF) is a consequence of its incomplete removal in wastewater and sewage treatment plants, which is potentialized by interactions with other pharmaceutical contaminants. In this context, electron beam irradiation (EBI) has been considered a clean technology for degrading pharmaceutical compounds in water. Nevertheless, the identification of DCF by-products and their correlation with biological recalcitrance and acute toxicity are poorly understood. In this study, the V. fischeri test was used to characterize DCF toxicity in the absence and presence of fluoxetine (FLX), prior and after irradiation. The results showed complete DCF degradation at low dose (5 kGy). DCF concentration followed pseudo first-order decay with respect to the absorbed, with k0 = (1.33 ± 0.10) kGy−1 (DCF) and k0 = (0.90 ± 0.12) kGy−1 (DCF+FLX). In contrast, negligible TOC removal was observed even at 7.5 kGy, with the formation of recalcitrant, non-biodegradable by-products, as also suggested by the respirometry test. Despite that, the toxicity of the DCF solution diminished from (19.6 ± 1.6) TU to (6.2 ± 2.3) TU, and from (6.8 ± 0.9) TU to (3.1 ± 0.2) TU, in the absence and presence of FLX, respectively, after irradiation up to 5 kGy. Four of the eleven by-products identified by direct-injection MS were easily degraded by EBI, and one (C13H14ClNO5) was considered the least recalcitrant but the most toxic. Based on these results, a possible DCF degradation pathway is proposed, involving hydroxylation and oxidation of aromatic rings, dehalogenation and C−N bond cleavage.

    Palavras-Chave: waste water; sewage; liquid wastes; waste processing; toxic materials; inflammation; electron beams; toxicity; water treatment plants; drugs; irradiation; antipyretics; carbon

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  • 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

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  • IPEN-DOC 07382

    RELA, P.R. ; SAMPA, M.H.O. ; DUARTE, C.L. ; COSTA, F.E. ; SCIANI, V. . Development of an up-flow irradiation device for electron beam wastewater treatment. Radiation Physics and Chemistry, v. 57, n. 3/6, p. 657-660, 2000.

    Palavras-Chave: waste water; waste processing; industrial wastes; electron beams; irradiation devices; energy transfer; organic compounds; decomposition

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  • IPEN-DOC 28010

    OTOMO, JULIANA I.; JESUS, TATIANE A de; COELHO, LÚCIA H.G.; MONTEIRO, LUCILENA R. ; HUNTER, COLIN; HELWIG, KARIN; ROBERTS, JOANNE; PAHL, OLE. Effect of eight common Brazilian drugs on Lemna minor and Salvinia auriculata growth. Environmental Science and Pollution Research, v. 28, n. 32, p. 43747-43762, 2021. DOI: 10.1007/s11356-021-13795-9

    Abstract: The growth of two species of macrophytes (Lemna minor and Salvinia auriculata) under the effect of a mixture of amoxicillin, caffeine, carbamazepine, dipyrone, ibuprofen, losartan, omeprazole, and tenivastatin was investigated by bioassay. Three concentration levels were utilized in this study (10, 200, and 500 μg L−1) using a growth inhibition test based on the OECD 221/2006 guidelines. The frond number, total area, and chlorophyll a level were selected as suitable end points. For L. minor, at all concentrations, a significant difference in the total frond number was observed and the growth inhibition varied from 30 to 70% at the low and high concentrations, respectively. No significant growth change was observed to S. auriculata exposed to the mixture of drugs. Thus, individual drug tests were performed for L. minor which demonstrated stimulation in growth, when exposed to most drugs individually, except tenivastatin which was identified as the drug responsible for the significant growth inhibition seen in the mixture. The L. minor enhanced growth was probably caused by N molecule transformation to ammonium and nitrate, essential nutrients for plants.

    Palavras-Chave: waste water; bioassay; algae; drugs; growth; inhibition

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  • 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

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  • IPEN-DOC 09948

    DUARTE, C.L. ; RIBEIRO, M.A.; SATO, I.M. ; SAMPA, M.H.O. . Efficiency of organic compounds removal by electron-beam irradiation in presence of high metal concentrations. Radiation Physics and Chemistry, v. 71, n. 1/2, p. 449-452, 2004.

    Palavras-Chave: organic compounds; removal; radiology; electron beams; accelerators; ionizing radiations; industrial wastes; chemical effluents; waste water; metals

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  • IPEN-DOC 09940

    BORRELY, S.I. ; GONCALVES, A.A.; OIKAWA, H. ; DUARTE, C.L. ; ROCHA, F.R.. Electron beam accelerator for detoxification of effluents. When radiation processing can enhance the acute toxicity?. Radiation Physics and Chemistry, v. 71, n. 1/2, p. 453-456, 2004.

    Palavras-Chave: accelerators; electron beams; gamma radiation; detoxification; toxicity; waste water; industrial wastes; bench-scale experiments; hydrogen peroxide; daphnia

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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.