In this study,carbamazepine(CBZ)decay in solution has been studied by coupling electro-coagulation with electro-Fenton(EC-EF)with a novel P-rGO/carbon felt(CF)cathode,aiming to accelerate the in-situ generation of·OH,instead of adding Fe2+and H2O2.Firstly,the fabri-cated P-rGO and its derived cathode were characterized by XRD,SEM,AFM,XPS and electro-chemical test(EIS,CV and LSV).Secondly,it was confirmed that the performance in removal efficiency and electric energy consumption(EEC)by EC-EF(kobs=0.124 min-1,EEC=43.98 kWh/kg CBZ)was better than EF(kobs=0.069 min-1,EEC=61.04 kWh/kg CBZ).Then,P-rGO/CF(kobs=0.248 min-1,EEC=29.47 kWh/kg CBZ,CE=61.04％)showed the best performance in EC-EF,among all studied heteroatom-doped graphene/CF.This superior performance may be associated with its largest layer spacing and richest C=C,which can promote the electron transfer rate and conductivity of the cathode.Thus,more H2O2 and·OH could be produced to degrade CBZ,and almost 100％CBZ was removed with kobs being 0.337 min-1 and the EEC was only 24.18 kWh/kg CBZ,under the optimal conditions(P-rGO loading was 6.0 mg/cm2,the current density was 10.0 mA/cm2,the gap between electrode was 2.0 cm).Additionally,no matter the influent is acidic,neutral or alkaline,no additional pH adjustment is required for the effluent of EC-EF.At last,an inconsecutive empirical kinetic model was firstly estab-lished to predict the effect of operating parameters on CBZ removal.

Beijing Key Lab for Source Control Technology of Water Pollution,School of Environmental Science and Engineering,Beijing Forestry University,Beijing 100083,China;Jiangsu Key Lab of Industrial Pollution Control and Resource Reuse,School of Environmental Engineering,Xuzhou University of Technology,Xuzhou 221018,China;State Key Lab of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Institute of Environment Engineering and Research,University of Engineering and Technology,GT Road,54890,Lahore,Punjab,Pakistan;Faculty of Chemistry,University of Gdansk,Wita Stwvosza 63,80-308 Gdansk,Poland

[1]Zhihui Xiao;Tingyu Cui;Zhenbei Wang;Yan Dang;Meijie Zheng;Yixinfei Lin;Zilong Song;Yiping Wang;Chao Liu;Bingbing Xu;Amir Ikhlaq;Jolanta Kumirska;Ewa Maria Siedlecka;Fei Qi-.Energy-efficient removal of carbamazepine in solution by electrocoagulation-electrofenton using a novel P-rGO cathode)[J].环境科学学报（英文版）,2022(05):88-102

electrofenton,inconsecutive

Energy,efficient,removal,carbamazepine,solution,by,electrocoagulation,using,novel,rGO,cathode,In,this,study,CBZ,decay,has,been,studied,coupling,Fenton,EF,carbon,felt,CF,aiming,accelerate,situ,generation,instead,adding,Fe2+and,H2O2,Firstly,fabri,cated,its,derived,were,characterized,AFM,XPS,chemical,test,EIS,CV,LSV,Secondly,was,confirmed,that,performance,efficiency,electric,energy,consumption,EEC,kobs,kWh,better,than,Then,CE,showed,best,among,heteroatom,doped,graphene,This,superior,may,associated,largest,layer,spacing,richest,which,can,promote,electron,transfer,conductivity,Thus,more,could,produced,degrade,almost,removed,being,only,under,optimal,conditions,loading,current,density,mA,gap,between,electrode,Additionally,matter,influent,acidic,neutral,alkaline,additional,adjustment,required,effluent,At,last,empirical,kinetic,model,firstly,estab,lished,predict,effect,operating,parameters

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