비소 오염토양의 안정화를 위한 나노 Fe°담지 바이오차 적용 연구 (Application of Nano Fe°-impregnated Biochar for the Stabilization of As-contaminated Soil)

최유림 (Yu-Lim Choi); Ganesh Kumar Reddy Angaru; 안혜영 (Ahn Hyeyoung); 박광진 (Kwang-Jin Park); 주완호 (Wan-Ho Joo); 양재규 (Jae-Kyu Yang); 장윤영 (YOON-YOUNG CHANG)

Application of Nano Fe°-impregnated Biochar for the Stabilization of As-contaminated Soil

Journal of Environmental Impact Assessment
Abbr : J EIA
2020, 29(5), pp.350-362
Publisher : Korean Society Of Environmental Impact Assessment
Research Area : Engineering > Environmental Engineering
Received : September 1, 2020
Accepted : September 17, 2020
Published : October 31, 2020

Yu-Lim Choi ¹, Ganesh Kumar Reddy Angaru ¹, Ahn Hyeyoung ¹, Kwang-Jin Park ², Wan-Ho Joo ¹, Jae-Kyu Yang ¹, YOON-YOUNG CHANG ¹

¹광운대학교
²(주)대일이앤씨

Accredited

ABSTRACT

In this study, nano Fe°-impregnated biochar (INPBC) was prepared using pruning residues and one-pot synthetic method and evaluated its performance as an amendment agent for the stabilization of arsenic-contaminated soil. Forthe preparation of INPBC, the mixture of pruning residue and Fe (III) solution was heated to 220°C for 3hr in a teflon-sealed autoclave followed by calcination at 600°C under N2 atmosphere for 1hr. As-prepared INPBC was characterized using FT-IR, XRD, BET, SEM. For the stabilization test of as-prepared INPBC, As-contaminated soils (Soil-E and Soil-S) sampled from agricultural sites located respectively near E-abandoned mine and S-abandoned mine in South Korea were mixed with different of dosage of INPBC and cultivated for 4 weeks. After treatment, TCLP and SPLP tests were conducted to determine the stabilization efficiency of As in soil and showed that the stabilization efficiency was increased with increasing the INPBC dosage and the concentration of As in SPLP extractant of Soil-E was lower than the drinking water standard level of Ministry of Environment of South Korea. The sequential fractionation of As in the stabilized soils indicated that the fractions of As in the 1st and 2nd stages that correspond liable and known as bioavailable fraction were decreased and the fractions of As in 3rd and 4th stages that correspond relatively non-liable fraction were increased. Such a stabilization of As shows that the abundant nano Fe° on the surface of INPBC mixed with Ascontaminated soils played the co-precipitation of As leaching from soil by surface complexation with iron. The results of this study may imply that INPBC as a promising amendments for the stabilization of As-contaminated soil play an important role.

KEYWORDS

biochar, stabilization, arsenic, iron nano-particles, soil

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Journal of Environmental Impact Assessment 2023 KCI Impact Factor : 0.51

Application of Nano Fe°-impregnated Biochar for the Stabilization of As-contaminated Soil

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KEYWORDS

Citation status

* References for papers published after 2023 are currently being built.

Journal of Environmental Impact Assessment 2023 KCI Impact Factor : 0.51

Application of Nano Fe°-impregnated Biochar for the Stabilization of As-contaminated Soil

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KEYWORDS

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