| Enhanced removal of hexavalent chromium by engineered biochar composite fabricated from phosphogypsum and distillers grains | |
| Guoqi Lian; Bing Wang; Xinqing Lee; Ling Li; Taoze Liu; Wenqiang Lyu | |
| 2019 | |
| 发表期刊 | Science of the Total Environmen
 |
| 卷号 | 697页码:1-9 |
| 摘要 | Two kinds of industrial wastes (distillers grains and phosphogypsum) were used as raw materials to produce a new biochar composite for Cr(VI) removal in water. The influencing factors including pyrolysis temperature, dosage, initial solution pH as well as contacting time were explored. The adsorption kinetics, isotherms, and thermodynamics of two biochars were conducted. The results show that the adsorption of Cr(VI) by biochar is related to pH. The ideal pH was 3.0 and the adsorbed Cr(VI) decreases as the pH increases. The Cr(VI) adsorption process conformed to the pseudo-second-order equation. Phosphogypsum modified (PM)-biochar is well described by the Freundlich model. The maximum adsorption capacities of distillers grains (DG)-biochar and PM-biochar on Cr(VI) were 63.1 and 157.9 mg g−1, respectively. The thermodynamic analysis indicates that the Cr(VI) adsorption occurs spontaneously which is an endothermic process. This study provided an alternative way for Cr(VI) removal from water. |
| 关键词 | Pyrolysis soil Amendment biochar Amendment |
| 收录类别 | SCI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.gyig.ac.cn/handle/42920512-1/10141 |
| 专题 | 环境地球化学国家重点实验室 |
| 作者单位 | 1.College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, China 2.Key Laboratory of Karst Environment and Geohazard, Ministry of Natural Resources, Guiyang, Guizhou 550025, China 3.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China 4.University of Chinese Academy of Sciences, Beijing 100049, China 5.College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China 6.Institute of Guizhou Mountain Resources, Guizhou Academy of Sciences, Guiyang 550001, China |
| 推荐引用方式 GB/T 7714 | Guoqi Lian；Bing Wang；Xinqing Lee；Ling Li；Taoze Liu；Wenqiang Lyu. Enhanced removal of hexavalent chromium by engineered biochar composite fabricated from phosphogypsum and distillers grains[J]. Science of the Total Environmen,2019,697:1-9. |
| APA | Guoqi Lian；Bing Wang；Xinqing Lee；Ling Li；Taoze Liu；Wenqiang Lyu.(2019).Enhanced removal of hexavalent chromium by engineered biochar composite fabricated from phosphogypsum and distillers grains.Science of the Total Environmen,697,1-9. |
| MLA | Guoqi Lian；Bing Wang；Xinqing Lee；Ling Li；Taoze Liu；Wenqiang Lyu."Enhanced removal of hexavalent chromium by engineered biochar composite fabricated from phosphogypsum and distillers grains".Science of the Total Environmen 697(2019):1-9. |
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| Enhanced removal of （1968KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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