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논문 기본 정보

자료유형
학술저널
저자정보
Oualid Mohamed Boulakradeche (University of Sciences and Technology Houari Boumediene) Ouarda Merdoud (University of Sciences and Technology Houari Boumediene) Djamal Eddine Akretche (University of Sciences and Technology Houari Boumediene)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제27권 제4호
발행연도
2022.8
수록면
95 - 105 (11page)

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초록· 키워드

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Electrokinetic soil remediation is often impeded by the aggregation of small particles, within soil, during the procedure. The soil porous network is subsequently clogged which results in immediate process termination. In order to overcome this limitation, the feasibility of electrokinetic remediation coupled simultaneously with two enhancing techniques was investigated: modified periodic polarity reversal and catholyte pH control. The objective is to keep the soil pores unclogged in order to remove Pb and Cu from soil. Citric acid was used as anolyte, and 1 DCV.cm<SUP>-1</SUP> was applied through the processing cell. This strategy showed 9.0 times better remediation results than that of unenhanced electroremediation. It was mainly owed to: (i) The pH adjustment that kept the catholyte ideally acid, thus avoiding the formation of metal hydroxide precipitates that could clog the soil pores. (ii) An increase of electro osmotic flow due to the modified polarity reversal technique. Approximately 96% of Pb and Cu were removed from soil. Duplicate results were obtained on soil with 10-fold the initial heavy metals concentration. This combined configuration ensured an unclogged path within soil and enhanced electrokinetic mechanisms efficiency against pollutants remediation.

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ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References

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