典型文献
Combination of steam-enhanced extraction and electrical resistance heating for efficient remediation of perchloroethylene-contaminated soil:Coupling merits and energy consumption
文献摘要：
In situ thermal desorption(ISTD)technology effectively remediates soil contaminated by dense nonaqueous phase liquids(DNAPLs).However,more efforts are required to minimize the energy consumption of ISTD technology.This study developed a laboratory-scale experimental device to explore the coupling merits of two traditional desorption technologies:steam-enhanced extraction(SEE)and electrical resistance heating(ERH).The results showed that injecting high-density steam(＞1 g/min)into loam or clay with relatively high moisture content(＞13.3％)could fracture the soil matrix and lead to the occurrence of the preferential flow of steam.For ERH alone,the electrical resistance and soil moisture loss were critical factors influencing heating power.When ERH and SEE were combined,preheating soil by ERH could increase soil permeability,effectively alleviating the problem of preferential flow of SEE.Meanwhile,steam injection heated the soil and provided moisture for maintaining soil electrical conductivity,thereby ensuring power stability in the ERH process.Compared with ERH alone(8 V/cm)and SEE alone(1 g/min steam),the energy consumption of combined method in remediating perchloroethylene-contaminated soil was reduced by 39.3％and 52.9％,respectively.These findings indicate that the combined method is more favorable than ERH or SEE alone for remediating DNAPL-contaminated subsurfaces when considering ISTD technology.
文献关键词：
中图分类号：
作者姓名：
Rui Yue;Zhikang Chen;Liujun Liu;Lipu Yin;Yicheng Qiu;Xianhui Wang;Zhicheng Wang;Xuhui Mao
作者机构：
School of Resource and Environmental Sciences,Wuhan University,Wuhan 430079,China;China State Science Dingshi Environmental Engineering Company,Beijing 100020,China
文献出处：
引用格式：
[1]Rui Yue;Zhikang Chen;Liujun Liu;Lipu Yin;Yicheng Qiu;Xianhui Wang;Zhicheng Wang;Xuhui Mao-.Combination of steam-enhanced extraction and electrical resistance heating for efficient remediation of perchloroethylene-contaminated soil:Coupling merits and energy consumption)[J].环境科学与工程前沿,2022(11):111-122
A类：
perchloroethylene,ISTD,remediates,nonaqueous,subsurfaces
B类：
Combination,steam,enhanced,extraction,electrical,resistance,efficient,remediation,contaminated,soil,Coupling,merits,energy,consumption,In,situ,thermal,desorption,technology,effectively,dense,phase,liquids,DNAPLs,However,more,efforts,required,minimize,This,study,developed,laboratory,scale,experimental,device,explore,coupling,two,traditional,technologies,SEE,ERH,results,showed,that,injecting,high,density,into,loam,clay,relatively,moisture,content,could,fracture,matrix,lead,occurrence,preferential,flow,For,alone,loss,were,critical,factors,influencing,power,When,combined,preheating,increase,permeability,alleviating,problem,Meanwhile,injection,heated,provided,maintaining,conductivity,thereby,ensuring,stability,process,Compared,method,remediating,was,reduced,respectively,These,findings,indicate,favorable,than,when,considering
AB值：
0.474006
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