Application of iron electrode corrosion enhanced electrokinetic-Fenton oxidation to remediate diesel contaminated soils: A laboratory feasibility study

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Application of iron electrode corrosion enhanced electrokinetic-Fenton oxidation to remediate diesel contaminated soils: A laboratory feasibility study
出版類型SCI(Sciences Citation Index)
出版年度2010
AuthorsTzai-Tang Tsai, 蔡在唐, Jy-Gau Sah 薩支高, & Chih-Ming Kao 高志明
開始頁1
頁數12
出版日期2010 / 1
其他編號0000
中文摘要

Diesel soil contamination on gas stations or refinery plants is a worldwide environmental problem. The
main objectives of this study were to (1) evaluate the efficiency of electrokinetic (EK) by using different
electrode materials (graphite and iron rods) and electrolytes (tap water, 0.01 M NaCl, and 0.1 M NaCl) on
the remediation of diesel contaminated soils, and (2) evaluate the feasibility of total petroleum hydrocarbon-
diesel (TPH-D) reducing in soils via EK-Fenton oxidation enhanced by corroded iron electrode. The
EK and EK-Fenton experiments were conducted in batch and sand box experiments, respectively. Batch
experiments reveal that the most appropriate electrolyte was 0.1 MNaCl when iron electrode was used in
the EK system. Sand box experiments indicate that the TPH-D concentration dropped from 10,000 to
300 mg kg1 when amorphous iron/total iron (Feo/Fet) ratio increased from 0.1 to 0.33, with the addition
of 8% of H2O2 and 0.1 M NaCl after 60 days of EK-Fenton operation. Electrokinetically enhanced oxidation
with the presence of both H2O2 and Fe3O4 (iron electrode corrosion) resulted in higher TPH-D removal
efficiency (97%) compared to the efficiencies observed from EK (55%) or Fenton oxidation (27%) alone.
This demonstrates that EK-Fenton oxidation catalyzed by iron electrode corrosion is a valuable direction
to efficiently and effectively remediate diesel contaminated soils.

期刊名稱Journal of Hydrology
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