The sedimentation of mixed cultures used in the treatment of effluents generated from terrestrial fuel distribution terminals
This study evaluated the use of coagulants (ferric chloride and aluminium sulphate) and an anionic polyelectrolyte (polyacrylamide) in the settling of a mixed culture (C1), which was used for the biodegradation of hydrocarbons present in effluent of fuel distribution terminals contaminated with dies...
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| Veröffentlicht in: | Journal of hazardous materials 2010-12, Vol.184 (1-3), p.177-183 |
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| creator | Vieira, R.B. Vieira, P.A. Ribeiro, E.J. Cardoso, V.L. |
| description | This study evaluated the use of coagulants (ferric chloride and aluminium sulphate) and an anionic polyelectrolyte (polyacrylamide) in the settling of a mixed culture (C1), which was used for the biodegradation of hydrocarbons present in effluent of fuel distribution terminals contaminated with diesel oil and gasoline. In preliminary investigations conducted in jar tests, the optimal concentrations of coagulant were obtained for further studies. After preliminary tests, biodegradation was evaluated in a central composite design (CCD) with varying concentrations of ferric chloride and polyelectrolyte. Ferric chloride and polyelectrolyte concentrations ranged from 77.9 to 422.12mg/L and 0.0 to 3.2mg/L, respectively. The responses monitored in CCD experiments included the sludge volume index (SVI), turbidity, and specific rate of oxygen uptake (SOUR), where values of 100mL/g, 840 nephelometric turbidity unit (NTU) and 58mgO2/gh, respectively, were obtained. Subsequently, biodegradation was monitored in a sequencing batch reactor (SBR). The results indicated that within five cycles, total petroleum hydrocarbon (TPH) removal increased from 75±1.0% to 79±0.5%, while the volatile suspended solids (VSS) increased from 1300 to 2500mg/L. |
| doi_str_mv | 10.1016/j.jhazmat.2010.08.021 |
| format | Article |
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In preliminary investigations conducted in jar tests, the optimal concentrations of coagulant were obtained for further studies. After preliminary tests, biodegradation was evaluated in a central composite design (CCD) with varying concentrations of ferric chloride and polyelectrolyte. Ferric chloride and polyelectrolyte concentrations ranged from 77.9 to 422.12mg/L and 0.0 to 3.2mg/L, respectively. The responses monitored in CCD experiments included the sludge volume index (SVI), turbidity, and specific rate of oxygen uptake (SOUR), where values of 100mL/g, 840 nephelometric turbidity unit (NTU) and 58mgO2/gh, respectively, were obtained. Subsequently, biodegradation was monitored in a sequencing batch reactor (SBR). 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In preliminary investigations conducted in jar tests, the optimal concentrations of coagulant were obtained for further studies. After preliminary tests, biodegradation was evaluated in a central composite design (CCD) with varying concentrations of ferric chloride and polyelectrolyte. Ferric chloride and polyelectrolyte concentrations ranged from 77.9 to 422.12mg/L and 0.0 to 3.2mg/L, respectively. The responses monitored in CCD experiments included the sludge volume index (SVI), turbidity, and specific rate of oxygen uptake (SOUR), where values of 100mL/g, 840 nephelometric turbidity unit (NTU) and 58mgO2/gh, respectively, were obtained. Subsequently, biodegradation was monitored in a sequencing batch reactor (SBR). The results indicated that within five cycles, total petroleum hydrocarbon (TPH) removal increased from 75±1.0% to 79±0.5%, while the volatile suspended solids (VSS) increased from 1300 to 2500mg/L.</description><subject>Applied sciences</subject><subject>Biodegradation</subject><subject>Biodegradation, Environmental</subject><subject>Biological and medical sciences</subject><subject>Biotechnology</subject><subject>Charge coupled devices</subject><subject>Chemical engineering</subject><subject>Chlorides - chemistry</subject><subject>Culture</subject><subject>Electrolytes - chemistry</subject><subject>Exact sciences and technology</subject><subject>Ferric chloride</subject><subject>Ferric Compounds - chemistry</subject><subject>Fuels</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Hydrocarbons</subject><subject>Liquid-liquid and fluid-solid mechanical separations</subject><subject>Methods. Procedures. Technologies</subject><subject>Mixed culture</subject><subject>Others</subject><subject>Pollution</subject><subject>Polyelectrolytes</subject><subject>Reactors</subject><subject>Settling</subject><subject>Sewage</subject><subject>SOUR</subject><subject>SVI</subject><subject>Terminals</subject><subject>Turbidity</subject><subject>Various methods and equipments</subject><issn>0304-3894</issn><issn>1873-3336</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkUuPFSEQRonRONfRn6BhY5xNXwvoBnplzMRXMombcU1oKBxu-jECbUYT_7u096o7XfE6H1WpQ8hTBnsGTL487A839vtky55DvQO9B87ukR3TSjRCCHmf7EBA2wjdt2fkUc4HAGCqax-SMw5acCbbHflxfYM0o48TzsWWuMx0CXSKd-ipW8eyJsx0rQCNMy2VLQlt2eCNwxDGte4z_YwzJlsqF9Iy0YKpBkuKdqRhxZH6uJ2G9VeF-jrF2Y75MXkQ6oJPTus5-fT2zfXl--bq47sPl6-vGtd2fWkcaAegWCd7KbzUPgjdcRiskD2TiChUQK7l4HsGvXdyUFZwrmtKdE54cU5eHP-9TcuXtTZmppgdjqOdcVmz0aDqqKTilbz4J8mUAtECh66i3RF1ack5YTC3KU42fTMMzObIHMzJkdkcGdCmOqq5Z6cS6zCh_5P6LaUCz0-Azc6OIdnZxfyXE7plrdq4V0cO6-i-Rkwmu4izqzYTumL8Ev_Tyk9KCrQr</recordid><startdate>20101215</startdate><enddate>20101215</enddate><creator>Vieira, R.B.</creator><creator>Vieira, P.A.</creator><creator>Ribeiro, E.J.</creator><creator>Cardoso, V.L.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>7SU</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>7ST</scope><scope>7U7</scope><scope>7UA</scope><scope>SOI</scope></search><sort><creationdate>20101215</creationdate><title>The sedimentation of mixed cultures used in the treatment of effluents generated from terrestrial fuel distribution terminals</title><author>Vieira, R.B. ; Vieira, P.A. ; Ribeiro, E.J. ; Cardoso, V.L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c459t-c08c007156963d68df38520ba36916eee37fe286bd9109dc6b7a32288c035c3d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Applied sciences</topic><topic>Biodegradation</topic><topic>Biodegradation, Environmental</topic><topic>Biological and medical sciences</topic><topic>Biotechnology</topic><topic>Charge coupled devices</topic><topic>Chemical engineering</topic><topic>Chlorides - chemistry</topic><topic>Culture</topic><topic>Electrolytes - chemistry</topic><topic>Exact sciences and technology</topic><topic>Ferric chloride</topic><topic>Ferric Compounds - chemistry</topic><topic>Fuels</topic><topic>Fundamental and applied biological sciences. 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In preliminary investigations conducted in jar tests, the optimal concentrations of coagulant were obtained for further studies. After preliminary tests, biodegradation was evaluated in a central composite design (CCD) with varying concentrations of ferric chloride and polyelectrolyte. Ferric chloride and polyelectrolyte concentrations ranged from 77.9 to 422.12mg/L and 0.0 to 3.2mg/L, respectively. The responses monitored in CCD experiments included the sludge volume index (SVI), turbidity, and specific rate of oxygen uptake (SOUR), where values of 100mL/g, 840 nephelometric turbidity unit (NTU) and 58mgO2/gh, respectively, were obtained. Subsequently, biodegradation was monitored in a sequencing batch reactor (SBR). 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| ispartof | Journal of hazardous materials, 2010-12, Vol.184 (1-3), p.177-183 |
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| subjects | Applied sciences Biodegradation Biodegradation, Environmental Biological and medical sciences Biotechnology Charge coupled devices Chemical engineering Chlorides - chemistry Culture Electrolytes - chemistry Exact sciences and technology Ferric chloride Ferric Compounds - chemistry Fuels Fundamental and applied biological sciences. Psychology Hydrocarbons Liquid-liquid and fluid-solid mechanical separations Methods. Procedures. Technologies Mixed culture Others Pollution Polyelectrolytes Reactors Settling Sewage SOUR SVI Terminals Turbidity Various methods and equipments |
| title | The sedimentation of mixed cultures used in the treatment of effluents generated from terrestrial fuel distribution terminals |
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