CFB灰基吸附剂的制备及其吸附性能研究  

Preparation of CFB fly ash-based adsorbent and its adsorption performance

作　　者：逯改 邱瑞芳 李达[1] 刘红宇 Lu Gai;Qiu Ruifang;Li Da;Liu Hongyu(School of Environmental&Resource Science of Shanxi University,Taiyuan Shanxi 030006,China;Institue of Resource&Environmental Engineering of Shanxi University,Taiyuan Shanxi 030006,China;School ofElectric Power,Civil Engineering and Architecture of Shanxi University,Taiyuan Shanxi 030006,China)

机构地区：[1]山西大学资源与环境工程研究所,山西太原030006 [2]山西大学环境与资源学院,山西太原030006 [3]山西大学电力与建筑学院,山西太原030006

出　　处：《山西建筑》2024年第10期23-27,32,共6页Shanxi Architecture

基　　金：国家自然科学基金联合基金项目(U1910215)。

摘　　要：以循环流化床(CFB)粉煤灰作为原料,采用复合激发剂和H_(2)O_(2)化学发泡制备出多孔地聚物基吸附材料。首先,研究了复合激发剂模数、水灰比和稳泡剂掺量对多孔地聚物的抗压强度、表观密度及孔结构的影响,并利用扫描电子显微镜对多孔地聚物的表观形貌进行观察和分析。其次,分别研究了CFB粉煤灰基多孔地聚物对模拟污染水体中Pb^(2+),Cd^(2+)和NH_(4)^(+)-N的吸附性能,并初步探讨了其吸附机制,为拓展粉煤灰资源化利用提供参考依据。Porous geopolymer based adsorbent was prepared from Circulating Fluidized Bed(CFB)fly ash by adding a composite alkali activator and foaming agent H_(2)O_(2).Firstly,the influence of water glass modulus,water cement ratio and foam stabilizers doping on the mechanical,apparent density and porosity of the porous geopolymer were investigated.The apparent morphology of the porous geopolymer was observed and analyzed using scanning electron microscopy.And then,the adsorption performance of the porous geopolymer on Pb^(2+),Cd^(2+)and NH_(4)^(+)-N were tested,respectively.While adsorption mechanism of the porous geopolymer was discussed preliminarily.This provides a reference basis for expanding the resource utilization of fly ash.

关 键 词：地聚物 吸附能力 多孔材料 抗压强度 孔隙率 

分 类 号：TU502[建筑科学—建筑技术科学]