阳极材料对苯酚电化学降解效果的影响
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摘要
分别以钢板、石墨和钛钌作阳极,钢板作阴极,探究不同阳极材料对苯酚电化学降解效果的影响。结果表明3种阳极材料对苯酚的去除能力依次为:钢板电极、石墨电极、钛钌电极。通过紫外-可见吸收光谱和气相色谱分析研究了不同阳极材料电化学电解苯酚后的产物,发现三种阳极材料处理后的苯酚废水中存在不同种类和丰度的降解产物,说明苯酚在不同阳极材料的降解路径不同。综合苯酚和TOC去除率以及降解过程中中间产物的积累情况,确定钢板阳极最适用于苯酚废水的电化学处理,最佳条件下苯酚和TOC去除率分别为89.51%和70.57%。
Effects of anode material on electrochemical degradation of phenol were investigated with stainless steel as the cathode and three kinds of anode material stainless steel,graphite,RuO2/Ti respectively. The results show that the removal rates of phenol with the three anode materials increases in order of stainless steel>graphite>RuO2/Ti. The products of electrochemical oxidation of phenol were investigated by UV-visible absorption spectroscopy and gas chromatography. Different kinds of degradation products were detected in the treated phenol wastewater by three anode materials,indicating that the degradation pathway of phenol is different when the anode materials are different. Stainless steel anode is suitable for electrochemical treatment of phenol wastewater with 89.51% of the removal rate of phenol and 70.57% of the removal rate of total organic carbon under the optimal conditions.
Effects of anode material on electrochemical degradation of phenol were investigated with stainless steel as the cathode and three kinds of anode material stainless steel,graphite,RuO2/Ti respectively. The results show that the removal rates of phenol with the three anode materials increases in order of stainless steel>graphite>RuO2/Ti. The products of electrochemical oxidation of phenol were investigated by UV-visible absorption spectroscopy and gas chromatography. Different kinds of degradation products were detected in the treated phenol wastewater by three anode materials,indicating that the degradation pathway of phenol is different when the anode materials are different. Stainless steel anode is suitable for electrochemical treatment of phenol wastewater with 89.51% of the removal rate of phenol and 70.57% of the removal rate of total organic carbon under the optimal conditions.
引文
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[21]李皓月,高璟,刘有智.苯酚在Ti/IrO2-Ta2O5电极上的电化学反应[J].含能材料,2016,24(3):289-294.
[22]翟婧涵.电化学氧化法处理含4-氯苯氧乙酸和2,4,6-三硝基苯酚废水的研究[D].沈阳:沈阳工业大学,2014.
[2]田大年,丁润梅,汪岭,等.太西煤煤基吸附剂对苯酚废水处理的研究[J].环境与健康杂志,2017,36(7):634-637.
[3] BUSCA G,BERARDINELLI S,RESINI C,et al.Technologies for the removal of phenol from fluid streams:a short review of recent developments[J].Journal of Hazardous Materials,2008,160(2):265-288.
[4] LUPU S,LETE C,MARIN M,et al.Electrochemical sensors based on platinum electrodes modified with hybrid inorganic-organic coatings for determination of4-nitrophenol and dopamine[J]. Electrochimica Acta,2009,54(7):1932-1938.
[5] PIGATTO G,LODI A,FINOCCHIO E,et al.Chitin as biosorbent for phenol removal from aqueous solution:Equilibrium,kinetic and thermodynamic studies[J].Chemical Engineering&Processing Process Intensification,2013,70(3):131-139.
[6] KEITH L,TELLIARD W. ES&T special report:priority pollutants:Ia perspective view[J].Environmental Science&Technology,2003,13(4):416-423.
[7]毕研俊,李玉江,高宝玉,等.焙烧类水滑石吸附去除水中苯酚[J].山东大学学报(理学版),2007,42(5):59-63.
[8]杨胜翔,王立章,伍波,等.基于AC/SnO2-Sb粒子电极的苯酚电催化氧化[J].化工进展,2016,35(4):1230-1236.
[9] GARCíA-GóMEZ C, VIDALES-CONTRERAS J A,NáPOLES-ARMENTA J,et al. Optimization of phenol removal using Ti/PbO2 anode with response surface methodology[J]. Journal of Environmental Engineering,2016,142(4):4016004.
[10]姚迎迎,唐琪玮,黄磊,等. BDD电化学氧化技术对工业废水的处理[J].净水技术,2018,37(增刊1):119-123.
[11]王鸿辉,马明洁,冯婕,等.钕掺杂二氧化铅复合阳极的电化学性能研究[J].电化学,2018,24(4):367-374.
[12]杨耀辉,彭乔. SnO2-Sb2O3-CeO2/Ti电催化电极制备及氧化苯酚研究[J].工业用水与废水,2011,42(4):72-76.
[13]阳瑞.糠醛渣综合利用新探索[D].广州:华南理工大学,2011.
[14] COMNINELLIS C. Electrocatalysis in the electrochemical conversion/combustion of organic pollutants for waste water treatment[J]. Electrochimica Acta,1994,39(11):1857-1862.
[15]刘静.掺硼金刚石电极电化学氧化有机废水试验研究[D].重庆:重庆大学,2014.
[16]郑天龙.微气泡/臭氧—三维电极反应器深度处理腈纶废水的研究[D].北京:北京科技大学,2016.
[17] NADY H,EL-RABIEI M M,EL-HAFEZ G M A.Electrochemical oxidation behavior of some hazardous phenolic compounds in acidic solution[J]. Egyptian Journal of Petroleum,2016,26(3):1-10.
[18] DUAN X,MA F,YUAN Z,et al. Electrochemical degradation of phenol in aqueous solution using PbO2anode[J]. Journal of the Taiwan Institute of Chemical Engineers, 2013, 44(1):95-102.
[19] CANIZARES P, MARTINEZ F,DIAZ M,et al.Electrochemical oxidation of aqueous phenol wastes using active and nonactive electrodes[J]. Journal of the Electrochemical Society, 2002, 149(8):D118-D124.
[20] NADY H,EL-RABIEI M M,EL-HAFEZ G M A.Electrochemical oxidation behavior of some hazardous phenolic compounds in acidic solution[J]. Egyptian Journal of Petroleum,2017,26(3):669-678.
[21]李皓月,高璟,刘有智.苯酚在Ti/IrO2-Ta2O5电极上的电化学反应[J].含能材料,2016,24(3):289-294.
[22]翟婧涵.电化学氧化法处理含4-氯苯氧乙酸和2,4,6-三硝基苯酚废水的研究[D].沈阳:沈阳工业大学,2014.
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