典型文献
Demulsification performance and mechanism of oil droplets by electrocoagulation:Role of surfactant
文献摘要：
Surfactants are widely used to improve the solubility of oil in water in petrochemical,making it more difficult to remove oil-water emulsions during the water treatment process.Electrocoagulation(EC)is an appropriate method for treating oily wastewater and destabi-lizing emulsions.However,the demulsification mechanism of oil-water droplets emulsified by surfactants with different charges have not been investigated systematically.The demul-sification performance of electrocoagulation on emulsions wastewater containing cationic,non-ionic,and anionic surfactants was studied.The results showed that the removal rate of total organic carbon(TOC)in oily wastewater with anionic surfactant by EC reached 92.98％±0.40％at a current density of 1 mA/cm2,while that of the non-ionic surfactant was 84.88％±0.63％.The characterization of flocs showed that EC has the highest coagulation and demulsification of oil droplets with a negative charge on the surface(-70.50±10.25 mV),which indicated that the charge neutralization of oil droplets was beneficial for the destabilization of the formed oily flocs.However,when the zeta potential of the oil droplets reached 75.50±1.25 mV,the TOC removal efficiency was only 11.80％±1.43％.The TOC removal could achieve 33.23％±3.21％when the current density improved from 1 mA/cm2 to 10 mA/cm2.The enhanced removal was due to the sweep coagulation rather than charge neutralization.This study provides a fundamental basis for the electrochemical treatment of oily wastewater.
文献关键词：
中图分类号：
作者姓名：
Liang Wang;Ben Zhang;Bin Zhao;Saiguo Yang;Kun Wu;Jingqiu Sun;Chengzhi Hu
作者机构：
State Key Laboratory of Separation Membranes and Membrane Processes,School of Environmental Science and Engineering,Tiangong University,Tianjin 300387,China;State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment,Suzhou University of Science and Technology,Suzhou 215009,China
文献出处：
引用格式：
[1]Liang Wang;Ben Zhang;Bin Zhao;Saiguo Yang;Kun Wu;Jingqiu Sun;Chengzhi Hu-.Demulsification performance and mechanism of oil droplets by electrocoagulation:Role of surfactant)[J].环境科学学报（英文版）,2022(08):171-180
A类：
Demulsification,Electrocoagulation,destabi,demulsification,demul
B类：
performance,mechanism,droplets,by,electrocoagulation,Role,Surfactants,are,widely,used,solubility,petrochemical,making,more,difficult,remove,emulsions,during,treatment,process,EC,appropriate,method,treating,oily,wastewater,lizing,However,emulsified,surfactants,different,charges,have,not,been,investigated,systematically,containing,cationic,anionic,studied,results,showed,that,removal,rate,total,organic,carbon,TOC,reached,current,density,mA,while,characterization,flocs,has,highest,negative,surface,mV,which,indicated,neutralization,beneficial,destabilization,formed,when,zeta,potential,efficiency,only,could,achieve,improved,from,enhanced,due,sweep,rather,than,This,study,provides,fundamental,basis,electrochemical
AB值：
0.431684
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