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[PMID]:29298296
[Au] Autor:Eikelboom M; Lopes ADCP; Silva CM; Rodrigues FÁ; Zanuncio AJV; Zanuncio JC
[Ad] Endereço:Departamento de Engenharia Florestal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brasil.
[Ti] Título:A multi-criteria decision analysis of management alternatives for anaerobically digested kraft pulp mill sludge.
[So] Source:PLoS One;13(1):e0188732, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The Multi-Criteria Decision Analysis (MCDA) procedure was used to compare waste management options for kraft pulp mill sludge following its anaerobic digestion. Anaerobic digestion of sludge is advantageous because it produces biogas that may be used to generate electricity, heat and biofuels. However, adequate management of the digested sludge is essential. Landfill disposal is a non-sustainable waste management alternative. Kraft pulp mill digested sludge applied to land may pose risks to the environment and public health if the sludge has not been properly treated. This study is aimed to compare several recycling alternatives for anaerobically digested sludge from kraft pulp mills: land application, landfill disposal, composting, incineration, pyrolysis/gasification, and biofuel production by algae. The MCDA procedure considered nine criteria into three domains to compare digested sludge recycling alternatives in a kraft pulp mill: environmental (CO2 emission, exposure to pathogens, risk of pollution, material and energy recovery), economic (overall costs, value of products) and technical (maintenance and operation, feasibility of implementation). The most suitable management options for digested sludge from kraft pulp mills were found to be composting and incineration (when the latter was coupled with recycling ash to the cement industry). Landfill disposal was the worst option, presenting low performance in feasibility of implementation, risk of pollution, material and energy recovery.
[Mh] Termos MeSH primário: Anaerobiose
Técnicas de Apoio para a Decisão
Esgotos
Indústria Têxtil
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Sewage)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180210
[Lr] Data última revisão:
180210
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180104
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0188732


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[PMID]:28463583
[Au] Autor:Yang SO; Sodaneath H; Lee JI; Jung H; Choi JH; Ryu HW; Cho KS
[Ad] Endereço:a Department of Environmental Science and Engineering , Ewha Womans University , Seoul , Republic of Korea.
[Ti] Título:Decolorization of acid, disperse and reactive dyes by Trametes versicolor CBR43.
[So] Source:J Environ Sci Health A Tox Hazard Subst Environ Eng;52(9):862-872, 2017 Jul 29.
[Is] ISSN:1532-4117
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The mycoremediation has been considered as a promising method for decolorizing dye wastewater. To explore new bioresource for mycoremediation, a new white-rot fungus that could decolorize various dyes commonly used in textile industries was isolated, and its ligninolytic enzyme activity and decolorization capacity were characterized. The isolated CBR43 was identified as Trametes versicolor based on the morphological properties of its fruit body and spores, as well as through partial 18S rDNA gene sequences. Isolated CBR43 displayed high activities of laccase and Mn-dependent peroxidase, whereas its lignin peroxidase activity was relatively low. These ligninolytic enzyme activities in potato dextrose broth (PDB) medium were enhanced by the addition of yeast extract (1-10 g L ). In particular, lignin peroxidase activity was increased more than 5 times in the PDB medium amended with 10 g L of yeast extract. The CBR43 decolorized more than 90% of 200 mg L acid dyes (red 114, blue 62 and black 172) and reactive dyes (red 120, blue 4, orange 16 and black 5) within 6 days in the PDB medium. CBR43 decolorized 67% of 200 mg L acid orange 7 within 9 days. The decolorization efficiencies for disperse dyes (red 1, orange 3 and black 1) were 51-80% within 9 days. The CBR43 could effectively decolorize high concentrations of acid blue 62 and acid black 172 (500-700 mg L ). The maximum dye decolorization rate was obtained at 28°C, pH 5, and 150 rpm in the PDB medium. T. versicolor CBR43 had high laccase and Mn-dependent peroxidase activities, and could decolorize a wide variety of dyes such as acid, disperse and reactive textile dyes. This fungus had decolorizing activities of azo-type dyes as well as anthraquinone-type dyes. T. versicolor CBR43 is one of promising bioresources for the decolorization of textile wastewater including various dyes.
[Mh] Termos MeSH primário: Compostos Azo/análise
Benzenossulfonatos/análise
Complexos de Coordenação/análise
Naftalenossulfonatos/análise
Trametes/crescimento & desenvolvimento
Poluentes Químicos da Água/análise
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Lacase/metabolismo
Peroxidases/metabolismo
Indústria Têxtil
Trametes/enzimologia
Águas Residuais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Azo Compounds); 0 (Benzenesulfonates); 0 (Coordination Complexes); 0 (Naphthalenesulfonates); 0 (Waste Water); 0 (Water Pollutants, Chemical); 0 (acid black 172); EC 1.10.3.2 (Laccase); EC 1.11.1.- (Peroxidases); EC 1.11.1.13 (manganese peroxidase); Q1LIY3BO0U (2-naphthol orange)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE
[do] DOI:10.1080/10934529.2017.1316164


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[PMID]:28719881
[Au] Autor:Lu GH; Gai N; Zhang P; Piao HT; Chen S; Wang XC; Jiao XC; Yin XC; Tan KY; Yang YL
[Ad] Endereço:Key Laboratory of Eco-geochemistry of Ministry of Land and Resources, National Research Center for Geo-analysis, Beijing, 100037, China.
[Ti] Título:Perfluoroalkyl acids in surface waters and tapwater in the Qiantang River watershed-Influences from paper, textile, and leather industries.
[So] Source:Chemosphere;185:610-617, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Perfluoroalkyl acids (PFAAs) are widely used as multi-purpose surfactants or water/oil repellents. In order to understand the contamination level and compositional profiles of PFAAs in aqueous environment in textile, leather, and paper making industrial areas, surface waters and tap waters were collected along the watershed of the Qiantang River where China's largest textile, leather, and paper making industrial bases are located. For comparison, surface water and tapwater samples were also collected in Hangzhou and its adjacent areas. 17 PFAAs were analyzed by solid phase extraction-high performance liquid chromatography-tandem mass spectrometry. The results show that the total concentrations of PFAAs (ΣPFAAs) in the Qiantang River waters ranged from 106.1 to 322.9 ng/L, averaging 164.2 ng/L. The contamination levels have been found to be extremely high, comparable to the levels of the most serious PFAA contamination in surface waters of China. The PFAA composition profiles were characterized by the dominant PFOA (average 58.1% of the total PFAAs), and PFHxA (average 18.8%). The ΣPFAAs in tap water ranged from 9.5 to 174.8 ng/L, showing PFAA compositional pattern similar to the surface waters. Good correlations between PFAA composition profiles in tap waters and the surface waters were observed.
[Mh] Termos MeSH primário: Água Potável/química
Monitoramento Ambiental
Fluorcarbonetos/análise
Curtume/estatística & dados numéricos
Indústria Têxtil/estatística & dados numéricos
Águas Residuais/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Ácidos Alcanossulfônicos/análise
China
Água Doce/química
Indústrias
Papel
Rios/química
Extração em Fase Sólida
Tensoativos/análise
Têxteis/análise
Águas Residuais/estatística & dados numéricos
Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alkanesulfonic Acids); 0 (Drinking Water); 0 (Fluorocarbons); 0 (Surface-Active Agents); 0 (Waste Water); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170719
[St] Status:MEDLINE


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[PMID]:28704155
[Ti] Título:Food for thought: innovation and debate.
[So] Source:J Wound Care;26(7):359, 2017 Jul 02.
[Is] ISSN:0969-0700
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Vestuário
Invenções
Resolução de Problemas
Terminologia como Assunto
Indústria Têxtil
Infecção dos Ferimentos
[Mh] Termos MeSH secundário: Cateterismo Periférico
Cateteres Venosos Centrais
Congressos como Assunto
Difusão de Inovações
Epidermólise Bolhosa
Seres Humanos
[Pt] Tipo de publicação:EDITORIAL
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170926
[Lr] Data última revisão:
170926
[Sb] Subgrupo de revista:N
[Da] Data de entrada para processamento:170714
[St] Status:MEDLINE
[do] DOI:10.12968/jowc.2017.26.7.359


  5 / 3212 MEDLINE  
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[PMID]:28647218
[Au] Autor:Lucato WC; Costa EM; de Oliveira Neto GC
[Ad] Endereço:Universidade Nove de Julho - UNINOVE, Av. Francisco Matarazzo, 612, CEP 05001-100, São Paulo, Brazil. Electronic address: wlucato@uni9.pro.br.
[Ti] Título:The environmental performance of SMEs in the Brazilian textile industry and the relationship with their financial performance.
[So] Source:J Environ Manage;203(Pt 1):550-556, 2017 Dec 01.
[Is] ISSN:1095-8630
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Currently, the concern with the environment is increasing and organizations seek solutions to preserve nature and at the same time earn higher profits or competitiveness. For this, they make frequent use of structured procedures in order to reduce their costs and expenses. However, it has not been always considered the environmental performance related to the financial performance of these processes. Therefore, this study aimed to investigate the relationship between environmental performance measured by eco-efficiency level with the financial performance of small and medium textile manufacturing companies. This study was done through a survey conducted in the interest of research companies in the state of Paraná in Brazil, where financial and environmental performance indicators were measured. The data analysis and validation of the hypotheses proposed, to some extent showed a surprising result because the larger the size of the company, the worst its environmental performance measured by their eco-efficiency level. On the other hand, it was not possible to identify a statistically significant relationship between environmental and financial performances of the companies surveyed. Therefore, it is concluded that this study is in line with those authors who claim not to be possible to establish a direct relationship between environmental and financial performances of companies, in opposition of another group of authors who claim contrariwise.
[Mh] Termos MeSH primário: Comércio
Poluentes Ambientais
Indústria Têxtil
[Mh] Termos MeSH secundário: Brasil
Custos e Análise de Custo
Meio Ambiente
Seres Humanos
Indústrias
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171113
[Lr] Data última revisão:
171113
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170626
[St] Status:MEDLINE


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[PMID]:28609745
[Au] Autor:Sarioglu OF; San Keskin NO; Celebioglu A; Tekinay T; Uyar T
[Ad] Endereço:Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center Bilkent University, 06800, Bilkent, Ankara, Turkey.
[Ti] Título:Bacteria immobilized electrospun polycaprolactone and polylactic acid fibrous webs for remediation of textile dyes in water.
[So] Source:Chemosphere;184:393-399, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this study, preparation and application of novel biocomposite materials for textile dye removal which are produced by immobilization of specific bacteria onto electrospun nanofibrous webs are presented. A textile dye remediating bacterial isolate, Clavibacter michiganensis, was selected for bacterial immobilization, a commercial reactive textile dye, Setazol Blue BRF-X, was selected as the target contaminant, and electrospun polycaprolactone (PCL) and polylactic acid (PLA) nanofibrous polymeric webs were selected for bacterial integration. Bacterial adhesion onto nanofibrous webs was monitored by scanning electron microscopy (SEM) imaging and optical density (OD) measurements were performed for the detached bacteria. After achieving sufficient amounts of immobilized bacteria on electrospun nanofibrous webs, equivalent web samples were utilized for testing the dye removal capabilities. Both bacteria/PCL and bacteria/PLA webs have shown efficient remediation of Setazol Blue BRF-X dye within 48 h at each tested concentration (50, 100 and 200 mg/L), and their removal performances were very similar to the free-bacteria cells. The bacteria immobilized webs were then tested for five times of reuse at an initial dye concentration of 100 mg/L, and found as potentially reusable with higher bacterial immobilization and faster dye removal capacities at the end of the test. Overall, these findings suggest that electrospun nanofibrous webs are available platforms for bacterial integration and the bacteria immobilized webs can be used as starting inocula for use in remediation of textile dyes in wastewater systems.
[Mh] Termos MeSH primário: Bactérias/metabolismo
Biodegradação Ambiental
Poluentes Químicos da Água/isolamento & purificação
[Mh] Termos MeSH secundário: Corantes/isolamento & purificação
Poliésteres
Indústria Têxtil
Águas Residuais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coloring Agents); 0 (Polyesters); 0 (Waste Water); 0 (Water Pollutants, Chemical); 24980-41-4 (polycaprolactone); 459TN2L5F5 (poly(lactide))
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170614
[St] Status:MEDLINE


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[PMID]:28549326
[Au] Autor:Sathishkumar K; Sathiyaraj S; Parthipan P; Akhil A; Murugan K; Rajasekar A
[Ad] Endereço:Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University, Vellore, 632 115, India. Electronic address: ksathish570@gmail.com.
[Ti] Título:Electrochemical decolorization of methyl red by RuO -IrO -TiO electrode and biodegradation with Pseudomonas stutzeri MN1 and Acinetobacter baumannii MN3: An integrated approach.
[So] Source:Chemosphere;183:204-211, 2017 Sep.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Textile effluent consists of enormous quantities of toxic dyes, which are being discharged into natural aqueous system and thus contaminate the water quality. Hence it is important to develop an eco-friendly and cost effective technology to treat the dyes contaminated wastewater. In this research, an integrated approach of electrochemical oxidation (EO) and biodegradation process (BP) was studied of methyl red (MR) dye. In EO, RuO -IrO -TiO is used as anode and titanium mesh electrode as cathode. This was followed by BP of the treated EO effluent. Various parameters viz., pH (5-10), sodium chloride concentrations (NaCl) (1-5 g L ) and current density (10-30 mA cm ) were optimized. The results of the EO showed 99.96% of MR decolorization within 10 min at pH of 5, NaCl of 2 g L and current density of 30 mA cm . The EO treated MR was further treated by BP Pseudomonas stutzeri MN1, Acinetobacter baumannii MN3 and mixed consortia of MN1 and MN3. The out of three treatments, the results of mixed consortium BP showed 90% removal of COD at the end of 24 h. The phytotoxic evaluation using Vigna radiata seeds confirmed the toxicity of untreated MR solution, whereas, 100% germination was observed in treated (biodegraded) MR solution. Overall these results evidenced that MR dye was completely decolorized and mineralized by EO and BP within 10 min and 24 h respectively. Hence, this integrated approach can be used as an effective degradation method to treat dyes in the textile industry.
[Mh] Termos MeSH primário: Acinetobacter baumannii/metabolismo
Compostos Azo/análise
Técnicas Eletroquímicas/métodos
Pseudomonas stutzeri/metabolismo
Poluentes Químicos da Água/análise
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Eletrodos
Irídio/química
Oxirredução
Compostos de Rutênio/química
Indústria Têxtil
Titânio/química
Águas Residuais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Azo Compounds); 0 (Ruthenium Compounds); 0 (Waste Water); 0 (Water Pollutants, Chemical); 12030-49-8 (iridium oxide); 12036-10-1 (ruthenium dioxide); 15FIX9V2JP (titanium dioxide); 44448S9773 (Iridium); 69083AX1ZX (methyl red); D1JT611TNE (Titanium)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171003
[Lr] Data última revisão:
171003
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170527
[St] Status:MEDLINE


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[PMID]:28481378
[Au] Autor:Jarolímek J; Urban P; Pavlínek P; Dzurova D
[Ad] Endereço:Charles University, Prague, Czechia (Faculty of Science, Department of Social Geography and Regional Development). jarolija@natur.cuni.cz.
[Ti] Título:Occupational diseases in the automotive industry in Czechia - Geographic and medical context.
[So] Source:Int J Occup Med Environ Health;30(3):455-468, 2017 May 08.
[Is] ISSN:1896-494X
[Cp] País de publicação:Poland
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: The automotive industry represents the most important industrial sector in Czechia. The objective of this study has been to analyze the occurrence of occupational diseases (OD) in the automotive industry during the period from 2001 till 2014. MATERIAL AND METHODS: Data on OD cases was retrieved from the National Registry of OD. Further, we conducted a survey in automotive companies with focus on occupational health services and positions of the companies in global production networks (GPNs). An analysis of OD distribution in the automotive industry was performed (age, gender, company size and its role in GPNs, regional distribution of studied companies, and regional unemployment rate), and was accompanied by assessment of the quality and range of occupational health services. RESULTS: Employees older than 40 years old have nearly 2.5 times higher probability of OD occurrence as compared with employees younger than 40 years old (odds ratio (OR) = 2.41, 95% confidence interval (CI): 2.05-2.85). Occupational diseases occurrence probability was 3 times higher for women than for men (OR = 3.01, 95% CI: 2.55-3.55). Occupational diseases incidence rates increased with the size of the company (0 OD/10 000 employees in micro enterprises to 57 OD/10 000 employees in large enterprises). A particularly steep rise in OD incidents in the automotive industry was observed in the Plzen Region between 2001 and 2011. An association between OD incidents and the unemployment rate was not statistically confirmed. CONCLUSIONS: A statistically significant increase in OD incidents dependent on company size may be arguably attributed to a higher quality of occupational medical services in bigger companies, which ensures better detection and diagnosis of OD. In the Plzen Region, the rapid increase in OD incidents was mainly caused by a change in the production process of automobile textiles in one factory due to the introduction of a glue containing isocyanates, which are potent allergising agents. This led to an increase in occupational allergic diseases - bronchial asthma in particular. Int J Occup Med Environ Health 2017;30(3):455-468.
[Mh] Termos MeSH primário: Indústrias
Doenças Profissionais/epidemiologia
[Mh] Termos MeSH secundário: Adulto
Alérgenos/toxicidade
Asma/epidemiologia
Asma/etiologia
Automóveis
República Tcheca/epidemiologia
Feminino
Geografia
Seres Humanos
Isocianatos/toxicidade
Masculino
Meia-Idade
Doenças Profissionais/etiologia
Exposição Ocupacional/efeitos adversos
Estudos Retrospectivos
Inquéritos e Questionários
Indústria Têxtil/estatística & dados numéricos
Desemprego
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Allergens); 0 (Isocyanates)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170829
[Lr] Data última revisão:
170829
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170509
[St] Status:MEDLINE


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[PMID]:28437742
[Au] Autor:Paz A; Carballo J; Pérez MJ; Domínguez JM
[Ad] Endereço:Chemical Engineering Department, Faculty of Sciences, University of Vigo (Campus Ourense), As Lagoas s/n, 32004, Ourense, Spain; Laboratory of Agro-food Biotechnology, CITI-University of Vigo, Tecnópole, Technological Park of Galicia, San Cibrao das Viñas, Ourense, Spain.
[Ti] Título:Biological treatment of model dyes and textile wastewaters.
[So] Source:Chemosphere;181:168-177, 2017 Aug.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Previous works conducted in our laboratory, reveled that Bacillus aryabhattai DC100 produce ligninolytic enzymes such as laccases and/or peroxidases, opening new applications in different bioprocesses, including the treatment of disposal residues such as dyestuffs from textile processing industries. This work described the degradation of three commercial model dyes Coomassie Brilliant Blue G-250 (CBB), Indigo Carmine (IC) and Remazol Brilliant Blue R (RBBR) under different culture media and operational conditions. The process was optimized using a Central Composite Rotatable Design, and the desirability predicted complete decolorization of 150 mg/L CBB at 37 °C, 304.09 rpm and salt concentration of 19.204 g/L. The model was validated with concentrations up to 180 mg/L CBB and IC, not being able to remove high amount of RBBR. The procedure here developed also allowed Chemical Oxygen Demands (COD) reductions in CBB of about 42%, meanwhile tests on real effluents from a local textile industry involved COD reductions of 50% in a liquid wastewater and 14% in semi-liquid sludge. Thus, allow the authorized discharge of wastewater into the corresponding treatment plant. Decolorization efficiencies and COD reductions open on the potential application of B. aryabhattai DC100 on the bioremediation of real effluents from textile industries.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Corantes/metabolismo
Indústria Têxtil
Águas Residuais/microbiologia
[Mh] Termos MeSH secundário: Antraquinonas/metabolismo
Bacillus/enzimologia
Bacillus/metabolismo
Índigo Carmim/metabolismo
Lacase/metabolismo
Peroxidases/metabolismo
Corantes de Rosanilina/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anthraquinones); 0 (Coloring Agents); 0 (Rosaniline Dyes); 0 (Waste Water); D3741U8K7L (Indigo Carmine); EC 1.10.3.2 (Laccase); EC 1.11.1.- (Peroxidases); L51IMM9UP9 (Remazol Brilliant Blue R); M1ZRX790SI (coomassie Brilliant Blue)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170802
[Lr] Data última revisão:
170802
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170425
[St] Status:MEDLINE


  10 / 3212 MEDLINE  
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[PMID]:28402298
[Au] Autor:Upendar G; Dutta S; Bhattacharya P; Dutta A
[Ad] Endereço:Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur 713209, India E-mail: susmita_che@yahoo.com.
[Ti] Título:Bioremediation of methylene blue dye using Bacillus subtilis MTCC 441.
[So] Source:Water Sci Technol;75(7-8):1572-1583, 2017 Apr.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Methylene blue (MB) commonly found in the textile industry effluent has been chosen as a model dye to investigate bioremediation using Bacillus subtilis MTCC 441. Both free cells and calcium alginate immobilized cells have been used to remove MB from the effluent. The operating variables of initial concentration of dye (20-60 mg/L), inoculum size (4-8%) and temperature (25-35 °C) have been varied judiciously during the kinetic study in a batch contactor. A maximum removal of 91.68% is obtained when 20 mg/L MB solution was inoculated with 8% inoculum and cultured for 6 h at 30 °C. Continuous removal of MB has been studied in a fixed bed contactor using immobilized cells as packing materials. Influent concentration (10-30 mg/L) was varied and breakthrough parameters have been determined. With increase in influent concentration from 10 mg/L to 30 mg/L, percentage removal of dye decreases from 72.44% to 49.62%.
[Mh] Termos MeSH primário: Bacillus subtilis/metabolismo
Corantes/metabolismo
Azul de Metileno/metabolismo
Poluentes Químicos da Água/metabolismo
[Mh] Termos MeSH secundário: Adsorção
Biodegradação Ambiental
Concentração de Íons de Hidrogênio
Cinética
Temperatura Ambiente
Indústria Têxtil
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coloring Agents); 0 (Water Pollutants, Chemical); T42P99266K (Methylene Blue)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170919
[Lr] Data última revisão:
170919
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170413
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.031



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