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投稿时间：2020-11-24 修订日期：2020-11-24
投稿时间：2020-11-24 修订日期：2020-11-24
中文摘要: 我国锑矿区土壤锑与砷污染严重，化学稳定化是修复锑砷污染土壤的重要方法。以水稻秸秆为原材料，采用水热法制得比表面积高达33.11 m2/g的铁负载生物炭稳定材料，Fe3+的负载明显促进碳化过程，改善了生物炭的性能。铁负载生物炭对土壤中五价态锑、砷的稳定化效果明显高于三价态。水溶态As(Ⅴ)和Sb(Ⅴ)的稳定率分别为51.22%和58.33%，有效态As(Ⅴ)和Sb(Ⅴ)的稳定率分别为53.67%和52.33%。修复后土壤中非专性吸附态和专性吸附态锑、砷向弱结晶和结晶型铁铝氧化物结合态转化，从而实现锑砷稳定。
Abstract:Soil contamination of Sb and As in mining areas of China is quite serious. Chemical stabilization is one of important methods for remediation of Sb and As contaminated soil. Using rice straw as raw material, a Fe-loading biochar with specific surface area of 33.11 m2/g was prepared by hydrothermal carbonization. Fe loading significantly enhanced carbonization and improved biochar characteristics. Fe-loading biochar has higher performances for stabilizing Sb(Ⅴ) and As(Ⅴ) than that for Sb(Ⅲ) and As(Ⅲ). Stabilization percentage of water-soluble As(Ⅴ) and Sb(Ⅴ) is 51.22% and 58.33% respectively. Stabilization percentage of bioavailable As(Ⅴ) and Sb(Ⅴ) is 53.67% and 52.33% respectively. Stabilization of soil antimony and arsenic by Fe-loading biochar contributes to transformation of non-specifically adsorbed and specifically adsorbed antimony and arsenic to poorly crystalline and crystalline iron-aluminum oxide combined state.
keywords: antimony arsenic biochar stabilization remediation soil
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基金项目:湖南省重点研发计划项目（2018SK2043）
| 作者 | 单位 | |
| 高世康 | 中南大学冶金与环境学院 | 2864818755@qq.com |
| 杨志辉* | 中南大学冶金与环境学院 | yangzh@csu.edu.cn |
| 周连碧 | 矿冶科技集团有限公司 | |
| 曾宪坤 | 中国瑞林工程技术股份有限公司 | |
| 柴喜林 | 中南大学冶金与环境学院，江西盖亚环保科技有限公司 |
引用文本：
高世康,杨志辉,周连碧,曾宪坤,柴喜林.铁负载生物炭对土壤中锑砷的稳定修复效果[J].有色金属（冶炼部分）,2020(12):95-101.
GAO Shikang,YANG Zhihui,Zhou Lianbi,ZENG Xiankun,CHAI Xilin.Remediation of Arsenic and Antimony Contaminated Soil by Fe-loading Biochar[J].Nonferrous Metals (Extractive Metallurgy),2020(12):95-101.
高世康,杨志辉,周连碧,曾宪坤,柴喜林.铁负载生物炭对土壤中锑砷的稳定修复效果[J].有色金属（冶炼部分）,2020(12):95-101.
GAO Shikang,YANG Zhihui,Zhou Lianbi,ZENG Xiankun,CHAI Xilin.Remediation of Arsenic and Antimony Contaminated Soil by Fe-loading Biochar[J].Nonferrous Metals (Extractive Metallurgy),2020(12):95-101.
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