Residual organics removal from manganese electrochemical solution using combined Fenton oxidation process with adsorption over activated carbon

被引：0
作者：
Jingxian Cui
Xueping Li
Yaseen Muhammad
Chongyi Shi
Haibin Li
Haifeng Su
机构：
[1] Guangxi University,College of Chemistry and Chemical Engineering
[2] Guangxi University for Nationalities,College of Chemistry and Chemical Engineering
[3] University of Peshawar,Institute of Chemical Sciences
来源：
Environmental Science and Pollution Research | 2020年 / 27卷
关键词：
Organics removal; Manganese leaching solution; Fenton oxidation; Activated carbon adsorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The removal of residual organics from manganese (Mn) electrochemical solution using combined Fenton oxidation process with adsorption over activated carbon (AC) was investigated. The effect of operating conditions such as dosage of H2O2, H2O2/Fe2+ ratio, initial pH value, reaction temperature, and reaction time on Fenton oxidation was studied. Experimental results indicated that a maximum chemical oxygen demand (COD) of 83.2% was obtained under the optimized set of conditions: H2O2 concentration of 0.15 mol/L, H2O2/Fe2+ molar ratio of 3, initial pH value of 3, reaction temperature of 50 °C, and reaction time of 90 min. The leaching solution was furthered treated over AC and COD removal rate increased to 93.1% under 3.75 g/L dosage of AC, adsorption temperature of 70 °C, and adsorption time of 120 min. The adsorption mechanism of Mn over AC was detailly investigated, while the porous texture of AC was studied by nitrogen adsorption isotherm.
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页码：44240 / 44248
页数：8
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