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Carbon Foam Cathode Electro-Fenton Process for Papermaking Wastewater Advanced Treatment
Received:April 08, 2021  
DOI：10.11980/j.issn.0254-508X.2021.06.015
Key Words:papermaking wastewater  advanced treatment  electro-Fenton  carbon foam  CODCr removal rate
Fund Project:2019年度河南省高等教育教学改革研究与实践项目“基于大数据的高职教学质量内生机制研究”（课题编号：2019SJGLX793）。
Author NameAffiliationPostcode
WEI Yahui Department of Mechanical and Electronic Engineering， Zhumadian Vocational and Teachnical College， Zhumadian， He’nan Province， 463000 463000
XIAO Hongtao School of Electronic and Computer Engineering， Huanghuai University， Zhumadian， He’nan Province， 463000 463000
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Abstract:In this study， a carbon foam cathode material was prepared by sucrose foaming-carbonization process for electro-Fenton advanced treatment of papermaking wastewater. Electron scanning microscope （SEM） and X-ray photoelectron spectrometer （XPS） were used to characterize the surface morphology and chemical construction of carbon foam cathode. The influence of the type of cathode material， reaction time， initial pH value，Fe2+ dosage and current density on the treatment efficiency of papermaking wastewater was investigated with CODCr removal rate as the evaluation index. The results indicated that carbon foam was formed by stacking a large number of pore structures with oxygen-containing functional groups on the surface. The optimum reaction conditions of electro-Fenton method with carbon cathode was that reaction time was 180 min， initial pH value was 3，Fe2+ dosage was 0.5 mmol/L and current density was 200 mA/cm2. The CODCr removal rate could reach 88.4% under the conditions， which was 1.3 times higher than conventional carbon felt cathode. The CODCr removal rate remained 85% for 10 circles with less than 5% reduction in efficiency， indicating that the electro-Fenton method with carbon foam had good stability in the advanced treatment of papermaking wastewater.
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