ORIGINAL RESEARCH
Efficient Treatment of British Gas/Lurgi Coal Gasification Wastewater Using New Electro-Fenton Catalyzed by Biogas Residues and Coal Fly Ash Composite as Heterogeneous Catalyst
Lifeng Ping 1  
,  
Shengdao Shan 1  
,  
Haifeng Zhuang 1  
,  
Jianbo Guo 1  
,  
Chenran Fang 1  
 
 
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Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou, China
Online publish date: 2018-03-07
Publish date: 2018-03-30
Submission date: 2017-07-24
Final revision date: 2017-09-29
Acceptance date: 2017-10-01
 
Pol. J. Environ. Stud. 2018;27(4):1683–1690
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ABSTRACT:
Biogas residues and coal fly ash composite (CFA/BRC) were first investigated as novel heterogeneous catalysts for strengthening electro-Fenton (EF) of real British gas/Lurgi coal gasification wastewater. The prepared CFA/BRC was characterized by different techniques, i.e., SEM, XRD, BET surface area, XRF, and ICP-AES. The results indicated that CFA/BRC significantly improved performance of pollutant removal in EF across a wide pH range with current density of 10 mA/cm2 and catalyst dosage of 1.0 g/L, and the treated wastewater was more biodegradable than homogeneous EF. Meanwhile, CFA/BRC showed superior stability at successive 2,400-min runs, and leached concentrations of heavy metals were very low without the second pollutant. The change of concentrations of dissolved oxygen and electro-generated H2O2, and fluorescence test indicated that the novel catalyst could enhance H2O2 decomposition into more hydroxyl radicals, which was considered to be mainly responsible for the pollutant removal. And the results offered new insights into sustainable use of waste materials.
CORRESPONDING AUTHOR:
Haifeng Zhuang   
Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou 310023, China, Hangzhou, 310023, China, 310023 Hangzhou, 310023, China, China
eISSN:2083-5906
ISSN:1230-1485