Journal
BIORESOURCE TECHNOLOGY
Volume 241, Issue -, Pages 391-396Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.05.115
Keywords
Electro-Fenton; Sewage sludge; Methyl orange; Carbon
Funding
- National Natural Science Foundation of China [51408358, 51679140]
- Shaanxi Social Development Scientific and Technological Project [2016SF-431]
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Highly stable iron based magnetic carbon were prepared by sequential Electro-Fenton (EF) activation and pyrolysis of sewage sludge. The applied voltage exerts great influence on EF treated sludge flocs and thus poses significant effect on physiochemical properties of the as-prepared carbons. High insertion rate of iron into sludge from EF activation resulted in carbons with highly dispersed iron oxides, which had average size of iron nanoparticles being 4.77 nm. The carbon also presented well developed porosity which had Brunauer-Emmett-Teller (BET) surface area attaining 341 m(2)/g. Carbons prepared by traditional Iron Impregnation (IM) were used as comparison to gain further insight into their catalytic role as Fenton-like catalyst. Results showed that EF-activated sludge carbon could yield 96.1% of Methyl Orange (MO) removal in 60 min together with only 1.4% of iron leaching. After three cycles, the MO removal can still reach 80% with EF-activated carbons. (C) 2017 Elsevier Ltd. All rights reserved.
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