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http://dx.doi.org/10.7857/JSGE.2017.22.6.001

Risk Mitigation Measures in Arsenic-contaminated Soil at the Forest Area Near the Former Janghang Smelter Site: Applicability of Stabilization Technique and Follow-up Management Plan  

An, Jinsung (Dept. of Civil & Environmental Engineering, Seoul National University)
Yang, Kyung (Environmental Assessment Group, Korea Environment Institute)
Kang, Woojae (JM Enviro Partners Co., Ltd.)
Lee, Jung Sun (Korea Environment Corporation)
Nam, Kyoungphile (Dept. of Civil & Environmental Engineering, Seoul National University)
Publication Information
Journal of Soil and Groundwater Environment / v.22, no.6, 2017 , pp. 1-11 More about this Journal
Abstract
This study was conducted to investigate the performance of four commercial chemical agents in stabilizing arsenic (As) in soil at the forest area near the former Janghang smelter site. After amending the stabilizing agents (A, B, C, and D) into As-contaminated soil samples, synthetic precipitation leaching procedure (SPLP) and solubility bioavailability research consortium (SBRC)-extractable As concentrations significantly decreased except for agent D, which is mainly composed of fly ash and calcium carbonate. Increase of SPLP and SBRC-extractable As concentrations in four soil samples (S1, S2, S3, and J2) was attributed to desorption of As adsorbed on iron oxides due to high pH generated by agent D. It is therefore necessary to consider application conditions according to soil characteristics such as pH and buffering capacity. Results of sequential extraction showed that readily extractable fractions of As in soil (i.e., sum of $SO_4-$ and $PO_4-extractable$ As in soil) were converted into non-readily extractable fractions by amending agents A, B, and C. Such changes in the As distribution in soil resulted in the decrease of SPLP and SBRC-extractable As concentration. A series of follow-up monitoring and management plan has been suggested to assess the longevity of the stabilization treatments in the site.
Keywords
Former Janghang smelter; Arsenic; Soil; Stabilization technique; Risk mitigation measures;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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