硅酸盐通报2018，Vol.37Issue(6)：1868-1876,1896,10.
脱硫石膏吸附水体中重金属离子行为的研究
Adsorption Behavior of Heavy Metal Ions by Desulfurization Gypsum in Water
摘要
Abstract
The use of industrial waste desulfurization gypsum (flue gas desulfurization gypsum, FGDG) as a adsorbent, under the condition of static adsorption, the adsorption process of FGDG on various heavy metal ions and the coexistence of various heavy metal ions were investigated from the aspects of temperature, pH value.Based on the influence of the hydration radius and the electric charge on the adsorption process, a mass transfer model is proposed.In the system of the existence of multiple heavy metal ions, the hydration radius and charge size have a significant effect on the competitive adsorption results, the competitive ability of five heavy metal ions as the follows: Pb2+＞Cr3 +＞Cd2 +＞Mn2+＞Cu2+.The Langmuir model infers that chemical adsorption is mainly a single layer adsorption process in adsorption model, and Freundlich model can describe FGDG and heavy metal ions physical adsorption belongs to multilayer adsorption process.After XRD analysis, FGDG and heavy metal ions can form Cu-S, Cd-S, Cr-S, Mn-S, Pb-S.关键词
脱硫石膏(FGDG)/重金属离子/吸附/脱吸附Key words
desulfurized gypsum(FGDG)/heavy metal ion/adsoption/desortion分类
资源环境引用本文复制引用
马义,杨晋,韩凤兰,祁利民..脱硫石膏吸附水体中重金属离子行为的研究[J].硅酸盐通报,2018,37(6):1868-1876,1896,10.基金项目
北方民族大学重点科研项目(2015KJ33) （2015KJ33）
宁夏功能材料与分离创新团队计划 （）
