Remediation of heavy metal contaminated soil by asymmetrical alternating current electrochemistry

Xu, Jinwei; Liu, Chong; Hsu, Po-Chun; Zhao, Jie; Wu, Tong; Tang, Jing; Liu, Kai; Cui, Yi

doi:10.1038/s41467-019-10472-x

Title: Remediation of heavy metal contaminated soil by asymmetrical alternating current electrochemistry

Journal Article · 03 June 2019 · Nature Communications

DOI: https://doi.org/10.1038/s41467-019-10472-x · OSTI ID:1532468

Xu, Jinwei ^[1]; Liu, Chong ^[1]; Hsu, Po-Chun ^[2]; Zhao, Jie ^[1]; Wu, Tong ^[1]; Tang, Jing ^[1]; Liu, Kai ^[1];

^[3]

Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
Stanford Univ., CA (United States). Dept. of Mechanical Engineering
Stanford Univ., CA (United States). Dept. of Materials Science and Engineering; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)

Soil contamination by heavy metals constitutes an important environmental problem, whereas field applicability of existing remediation technologies has encountered numerous obstacles, such as long operation time, high chemical cost, large energy consumption, secondary pollution, and soil degradation. Here we report the design and demonstration of a remediation method based on a concept of asymmetrical alternating current electrochemistry that achieves high degrees of contaminant removal for different heavy metals (copper, lead, cadmium) at different initial concentrations (from 100 to 10,000 ppm), all reaching corresponding regulation levels for residential scenario after rational treatment time (from 30 min to 6 h). No excessive nutrient loss in treated soil is observed and no secondary toxic product is produced. Long-term experiment and plant assay show the high sustainability of the method and its feasibility for agricultural use.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1532468

Journal Information:: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Ecological and human health risks appraisal of metal(loid)s in agricultural soils: a review Kumar, Vinod; Pandita, Shevita; Sharma, Anket Taylor & Francis https://doi.org/10.6084/m9.figshare.11352095.v1	text	January 2019
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Ecological and human health risks appraisal of metal(loid)s in agricultural soils: a review Kumar, Vinod; Pandita, Shevita; Sharma, Anket Taylor & Francis https://doi.org/10.6084/m9.figshare.11352095	text	January 2019

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