四川大学CEJ:用于降解顽固环烷酸的高效电助催化类芬顿反应
四川大学CEJ:用于降解顽固环烷酸的高效电助催化类芬顿反应
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不限于分享高级氧化技术前沿科学知识。
第一作者: Yu Chen
通讯作者: 黄荣夫/ 熊兆锟
通讯单位: 四川大学建筑与环境学院
论文 DOI : 10.1016/j.cej.2022.138331
不同体系中环烷酸的降解
Fig. 2 . Comparison of electrochemical alone (EC alone), EC/PMS, EC/PMS/Fe(III) and EC/PMS/Fe(II) systems for degradation of four NA model compounds, including (a) cyclohexanecarboxylic acid (CHA), (b) benzoic acid (BA), (c) heptanoic acid (HPA) and (d) 2-methylhexanoic acid (2-MHA).
EC/PMS/Fe(III)体系的降解机理
Fig. 3 . Inhibition effects of scavengers including TBA, EtOH and FFA for EC/PMS/Fe(III) degradation of four NA compounds, including (a) cyclohexanecarboxylic acid (CHA), (b) benzoic acid (BA), (c) heptanoic acid (HPA) and (d) 2-methylhexanoic acid (2-MHA).
Fig. 6 . (a) CHA chemical structure; (b) Fukui index of different sites on CHA; and (c) degradation pathways of CHA. C, H, O atoms are shown as grey, white, and red balls, respectively. Accurate molecular masses were calculated for CHA and byproducts.
Fig. 7 . (a) Acute toxicity, (b) bioaccumulation factor, (c) developmental toxicity, and (d) mutagenicity of CHA and twelve byproducts. Prediction and evaluation were performed using the Toxicity Estimation Software Tool (T.E.S.T.).
Fig. 8 . (a) Impact of the addition of Cl − , H 2 PO 4 − or NO 3 − anions to the EC/PMS/Fe(III) system; (b) five consecutive degradation processes of CHA by EC/PMS/Fe(III) system; SEM images of the carbon fiber on carbon felt cathode before (c) and after 30 mins treatment experiment (d); classical NA removal and distribution before (e) and after 30 mins treatment (f).
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