Integration of US/Fe(2+) and photo-Fenton in sequencing for degradation of landfill leachate
The landfill leachate treated by sonication in presence of Fe(2+) (US/Fe(2+)) and then by photo-Fenton achieved the highest total organic carbon (TOC) removal efficiency among the screened processes. The lower initial pH, dosage of Fe(2+) and initial concentration of leachate were helpful in raising...
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| Veröffentlicht in: | Water science and technology 2016, Vol.73 (2), p.260-266 |
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| creator | Zha, F G Yao, D X Hu, Y B Gao, L M Wang, X M |
| description | The landfill leachate treated by sonication in presence of Fe(2+) (US/Fe(2+)) and then by photo-Fenton achieved the highest total organic carbon (TOC) removal efficiency among the screened processes. The lower initial pH, dosage of Fe(2+) and initial concentration of leachate were helpful in raising TOC removal efficiency of leachate by US/Fe(2+). The optimal conditions for the US-photo-Fenton process were as follows: initial pH at 3.0, [H2O2]/[TOC0] at 2, [H2O2]/[Fe(2+)] at 5 and initial concentration of landfill leachate at 600 mg/L. The removal efficiency of TOC, chemical oxygen demand (COD) and 5-day biochemical oxygen demand (BOD5) were 68.3, 79.6 and 58.2%, while the BOD5/COD rose from 0.20 to 0.43 at optimum condition. Based on gas chromatography-mass spectrometry (GC-MS) results, 36 of a total of 56 pollutants were completely degraded by US-photo-Fenton treatment. |
| doi_str_mv | 10.2166/wst.2015.487 |
| format | Article |
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The lower initial pH, dosage of Fe(2+) and initial concentration of leachate were helpful in raising TOC removal efficiency of leachate by US/Fe(2+). The optimal conditions for the US-photo-Fenton process were as follows: initial pH at 3.0, [H2O2]/[TOC0] at 2, [H2O2]/[Fe(2+)] at 5 and initial concentration of landfill leachate at 600 mg/L. The removal efficiency of TOC, chemical oxygen demand (COD) and 5-day biochemical oxygen demand (BOD5) were 68.3, 79.6 and 58.2%, while the BOD5/COD rose from 0.20 to 0.43 at optimum condition. 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The lower initial pH, dosage of Fe(2+) and initial concentration of leachate were helpful in raising TOC removal efficiency of leachate by US/Fe(2+). The optimal conditions for the US-photo-Fenton process were as follows: initial pH at 3.0, [H2O2]/[TOC0] at 2, [H2O2]/[Fe(2+)] at 5 and initial concentration of landfill leachate at 600 mg/L. The removal efficiency of TOC, chemical oxygen demand (COD) and 5-day biochemical oxygen demand (BOD5) were 68.3, 79.6 and 58.2%, while the BOD5/COD rose from 0.20 to 0.43 at optimum condition. 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The lower initial pH, dosage of Fe(2+) and initial concentration of leachate were helpful in raising TOC removal efficiency of leachate by US/Fe(2+). The optimal conditions for the US-photo-Fenton process were as follows: initial pH at 3.0, [H2O2]/[TOC0] at 2, [H2O2]/[Fe(2+)] at 5 and initial concentration of landfill leachate at 600 mg/L. The removal efficiency of TOC, chemical oxygen demand (COD) and 5-day biochemical oxygen demand (BOD5) were 68.3, 79.6 and 58.2%, while the BOD5/COD rose from 0.20 to 0.43 at optimum condition. Based on gas chromatography-mass spectrometry (GC-MS) results, 36 of a total of 56 pollutants were completely degraded by US-photo-Fenton treatment.</abstract><cop>England</cop><pmid>26819380</pmid><doi>10.2166/wst.2015.487</doi><tpages>7</tpages></addata></record> |
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| source | MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Biological Oxygen Demand Analysis Hydrogen Peroxide - chemistry Iron - chemistry Oxidation-Reduction Photolysis Water Pollutants, Chemical - chemistry |
| title | Integration of US/Fe(2+) and photo-Fenton in sequencing for degradation of landfill leachate |
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