碳刷阴极在中性条件下电芬顿降解甲基橙研究  

Degradation of methyl orange by electro-Fenton with carbon brush electrode at circumneutral pH

作　　者：陈铮华 陈雄建 陈隋晓晨 金延超 CHEN Zheng-hua;CHEN Xiong-jian;CHEN Sui-xiao-chen;JIN Yan-chao(College of Environmental Science and Engineering,Fujian Normal University,Fuzhou 350007,China;Fujian Key Laboratory of Pollution Control&Resource Reuse,Fuzhou 350007,China)

机构地区：[1]福建师范大学环境科学与工程学院,福建福州350007 [2]福建省污染控制与资源循环利用重点实验室,福建福州350007

出　　处：《应用化工》2023年第1期74-77,85,共5页Applied Chemical Industry

基　　金：福建省自然科学基金(2019J05069);福建省科技厅引导性项目(2019Y0010)。

摘　　要：以碳刷为阴极,钌铱钛板为阳极,基于亚铁与柠檬酸的络合作用,在中性pH条件下电芬顿降解甲基橙,探究了电流、曝气量、硫酸亚铁与柠檬酸比例、硫酸亚铁浓度等对甲基橙降解的影响。结果表明,在30 mA电流、空气曝气量400 mL/min、硫酸亚铁∶柠檬酸=1∶1及亚铁浓度为0.3 mmol/L的条件下,初始浓度为50 mg/L的甲基橙废水,90 min后脱色率达到98%左右。与脱色相比,矿化所需时间相对更长,360 min后,同等浓度的甲基橙废水的矿化率仅能达到74.9%。The electro-Fenton degradation of methyl orange under neutral pH conditions based on the complexation of ferrous iron with citric acid using carbon brushes as the cathode and ruthenium-iridium titanium plates as the anode was investigated.The effects of current, aeration, ferrous sulfate to citric acid ratio and ferrous sulfate concentration on the degradation of methyl orange were investigated.The results showed that under the conditions of 30 mA current, 400 mL/min air aeration, ferrous sulfate∶citric acid=1∶1 and ferrous concentration of 0.3 mmol/L,the decolorization rate of methyl orange wastewater with initial concentration of 50 mg/L reached about 98% after 90 min.Compared with decolorization, the time required for mineralization is relatively longer.After 360 min, the mineralization rate of methyl orange wastewater with the same concentration can only reach 74.9%.

关 键 词：碳刷 络合作用 中性电芬顿 甲基橙 染料降解 

分 类 号：TQ150.9[化学工程—电化学工业] X52[环境科学与工程—环境工程] X787