Evaluation of stabilizing materials for immobilization of toxic heavy metals in contaminated agricultural soils in China
| Autor: | Jongbok Choi, Younggyu Son, Jeonggwan Kim, Yonghyeon Lee, Mingcan Cui, Jeehyeong Khim, Zhengchang Han |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
021110 strategic
defence & security studies Renewable Energy Sustainability and the Environment Strategy and Management 0211 other engineering and technologies Slag Soil classification Heavy metals 02 engineering and technology 010501 environmental sciences Contamination 01 natural sciences Soil contamination Industrial and Manufacturing Engineering Environmental chemistry visual_art Soil water Soil stabilization visual_art.visual_art_medium Environmental science Drainage 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Journal of Cleaner Production. 193:748-758 |
| ISSN: | 0959-6526 |
| DOI: | 10.1016/j.jclepro.2018.05.105 |
| Popis: | Contamination of agricultural crops by toxic heavy metals (HMs) causes serious damage to the human body. In this study, soil stabilization method was selected and coal mine drainage sludge (CMDS), waste cow bones (WCB), and steel making slag (SMS) were used as stabilization materials (SM). According to laboratory results, the optimum mixing ratio of SM and contaminated soil was 7 wt%. The optimal stabilizers for the stabilization of HMs contaminated soils were CMDS/SMS and CMDS/WCB, and the mixing ratio was 50:50 wt%. In addition, stabilization substances CMDS/SMS = 50/50, CMDS/WCB = 50/50, SMS/WCB = 50/50 and CMDS/SMS/WCB = 5/65/30 wt % were injected into four sites for 150 days. Results after 4 days of stabilization, SM of all compositions could satisfy the stabilization criteria. This study shows that CMDS, SMS, WCB, and a mixed composition of these can be effectively used as SM for agricultural soil contaminated with HMs. |
| Databáze: | OpenAIRE |
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