农业环境科学学报2018，Vol.37Issue(1)：64-71,8.DOI:10.11654/jaes.2017-0839
混合烃污染土壤微生物-电动修复中的互补性研究
Complementarity of bio-electrokinetics in the remediation of soil contaminated with multiple hydrocarbons
摘要
Abstract
To evaluate the specific effects of biological degradation and electrochemical oxidation in the removal of different hydrocarbons,the temporal and spatial degradation characteristics of different hydrocarbons and changes of microbial numbers and activity were analyzed.The hydrocarbons,n-hexadecane,cyclododecane,and pyrene,were selected as representative pollutants of alkanes,cyclanes,and polycyclic aromatic hydrocarbons,respectively.Based on the following remediation techniques:electrokinetics(EK),bioremediation(BIO),and bio-electrokinetics(BIO-EK),a remediation platform of a 2-dimensional(2-D) symmetrical electric field was applied,which was inoculated with complex bacterial strains able to degrade various petroleum hydrocarbons.The results demonstrated a significant enhancement in remediation efficiency of BIO-EK than that of BIO or EK alone.An obvious increase in microbial activity and numbers in soil was detected in the BIO-EK test,which enhanced degradation efficiency in different hydrocarbons.It showed a complementarity between biological degradation and electrochemical oxidation in the removal of different hydrocarbons,and n-hexadecane and pyrene decreased more with biological degradation,whereas the cyclododecane decreased more with electrochemical oxidation.In addition,biological degradation was more effective at positions with weaker electric intensity,whereas electrochemical oxidation was more effective at positions with stronger electric intensity.关键词
微生物降解/电化学氧化/微生物降解菌群/石油烃Key words
biological degradation/electrochemical oxidation/microbial flora/petroleum hydrocarbons分类
资源环境引用本文复制引用
范瑞娟,郭书海,李凤梅,吴波..混合烃污染土壤微生物-电动修复中的互补性研究[J].农业环境科学学报,2018,37(1):64-71,8.基金项目
国家自然科学基金项目(21677150,21507144) （21677150,21507144）
宁夏自然科学基金项目(NZ17098) （NZ17098）
宁夏高等学校科研项目(NGY2016153) （NGY2016153）
北方民族大学重点科研项目(2015KJ34)The National Natural Science Foundation of China(21677150,21507144) （2015KJ34）
Ningxia Natural Science Foundation(NZ17098) （NZ17098）
The Scientific Research Project of Ningxia Institutions(NGY2016153) （NGY2016153）
Key Scientific Research Projects at North Minzu University(2015KJ34) （2015KJ34）
