| 碱活化珍珠岩去除废水中Cd(Ⅱ)的研究 |
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| 引用本文： | 姜林,胡慧敏,陈敏,张其武.碱活化珍珠岩去除废水中Cd(Ⅱ)的研究[J].矿产保护与利用,2021,41(3):173-178. |
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| 作者姓名： | 姜林 胡慧敏 陈敏 张其武 |
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| 作者单位： | 武汉理工大学 资源与环境工程学院, 湖北 武汉 430070 |
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| 摘 要： | 珍珠岩经高能球磨活化，并在球磨活化过程中添加Ca（OH）2以及CaCl2共磨，制备新型硅酸盐矿物材料。使用XRF、XRD、SEM/EDS等表征分析，以及Cd（Ⅱ）的吸附容量等对该吸附剂进行定性和定量的性能评价。结果表明，经过600 r/h的共磨后，吸附剂对Cd（Ⅱ）吸附量高达1 372.70 mg/g，同时，吸附后溶液的pH值为中性或弱碱性，比传统碱沉淀法显著降低。所制备的新型材料和制备工艺环境友好，原料廉价易得，为珍珠岩及其他硅酸盐矿物的活化利用提供了新思路。
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| 关 键 词： | 珍珠岩 高能球磨 Cd(Ⅱ) 吸附剂 |
| 收稿时间： | 2021-05-25 |
Study on the Removal of Cd(Ⅱ) in the Wastewater by Alkaline-activated Per-lite |
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| JIANG Lin,HU Huimin,CHEN Min,ZHANG Qiwu.Study on the Removal of Cd(Ⅱ) in the Wastewater by Alkaline-activated Per-lite[J].Conservation and Utilization of Mineral Resources,2021,41(3):173-178. |
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| Authors: | JIANG Lin HU Huimin CHEN Min ZHANG Qiwu |
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| Affiliation: | School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430081, China |
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| Abstract: | Co-grinding perlite with calcium hydroxide and calcium chloride by high-energy ball mill was conducted to prepare novel silicate material. The adsorption characteristics of heavy metal by the new material were studied qualitatively and quantitatively by a set of analytical methods of XRF、XRD、SEM/EDS and evaluation of the adsorption capacity for Cd (Ⅱ). The results show that the adsorption capacity of Cd(Ⅱ) may reach 1 372.70 mg/g with the grinding time of 1h and the stirred speed of 600 r/min. Meanwhile, the final pH of solution after reaction is neutral or weak alkaline. It was greatly decreased compared with the common alkali precipitation. The preparing process and the product are environment-friendly, providing a new idea to activate and utilize perlite and other silicate ore tailings. |
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