| 引用本文: | 赵贺芳1,任梦娇1,王子杰2,张杰杰1.粘土矿物材料用于水中硝酸盐去除的研究进展(J/M/D/N,J:杂志，M：书，D：论文，N：报纸).期刊名称,2023，40（3）：9-19 |
| CHEN X. Adap tive slidingmode contr ol for discrete2ti me multi2inputmulti2 out put systems[ J ]. Aut omatica, 2006, 42(6): 4272-435 |
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| 摘要: |
| 硝酸盐污染威胁着环境安全和人体健康,储量高、易获取、低价高效的粘土矿物材料作为硝酸盐脱除剂极具潜力。首先从硝酸盐的特性和来源出发,介绍了用于水中硝酸盐去除的天然粘土矿物,包括高岭土、凹凸棒土、伊利石、海泡石和膨润土,发现它们普遍存在着离子交换容量较低、选择吸附性不高的问题。接着归纳了目前常用的改性方法和复合方法:两种方法均能有效提升粘土矿物材料对硝酸盐的脱除能力,改性技术能够改良其表面性质,调整表面官能团的种类和数量,其中表面活性剂改性所取得的成效更优;复合技术能够拓宽其功能性,获取更多的操作性和性能提升,其中同双金属离子或壳聚糖复合是更好的办法。然后分析了粘土矿物材料的毒性,总结出其具有制备低毒性和高生物相容性复合材料的潜力,但需要对改性剂的选择和使用浓度进行严格的控制。最后,展望了未来粘土矿物材料在硝酸盐去除方面的研究重点和发展方向,为开发用于硝酸盐去除的新型粘土矿物材料提供理论支持和参考。 |
| 关键词: 粘土矿物 硝酸盐 水处理 发展趋势 |
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| Research Progress of Clay Mineral Materials for Nitrate Removal in Water |
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ZHAO Hefang1, REN Mengjiao1, WANG Zijie2, ZHANG Jiejie1
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1. School of Civil Engineering, Ma'anshan University, Anhui Maanshan 243100, China
2. School of Civil Engineering, Southeast University, Nanjing 211189, China
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| Abstract: |
| Nitrate pollution threatens environmental safety and human health. Clay mineral materials with high reserves, easy access, low price and high efficiency have great potential as nitrate removers. Starting from the characteristics and sources of nitrate, the natural clay minerals used for nitrate removal in water, including kaolin, attapulgite, illite, sepiolite, and bentonite, were introduced. They generally have the problems of low ion exchange capacity and low selective adsorption. Then, the commonly used modification method and composite method were summarized. Both methods can effectively improve the nitrate removal ability of clay mineral materials. Modification technology can improve its surface properties, adjust the type and quantity of surface functional groups and the effect of surfactant modification is better. Compounding technology can broaden its functionality and obtain more operability and performance improvement, among which the compounding with bimetallic ions or chitosan is a better way. Further, the toxicity of the clay mineral material was analyzed. It is concluded that it has the potential to prepare composites with low toxicity and high biocompatibility, but the selection and concentration of modifiers need to be strictly controlled. In the end, the future research focus and development direction of clay mineral materials in nitrate removal were prospected. Theoretical support and references are provided for the development of new clay mineral materials for nitrate removal. |
| Key words: clay minerals nitrates water treatment development trend |
