Characteristics of coal fly ash and adsorption application
Characteristics of coal fly ash and adsorption application
复制标题
DOI：
10.1016/j.fuel.2008.05.022
复制
发表时间：
2008-11
期刊：
影响因子：
7.4
通讯作者：
Shaobin Wang;Q. Ma;Zhonghua Zhu
中科院分区：
文献类型：
--
作者：
Shaobin Wang;Q. Ma;Zhonghua Zhu
采用N2吸附法、XRD、SEM和pH滴定法对粉煤灰的理化性质进行了表征。这些粉煤灰样品作为低成本的吸附剂，从水溶液中去除亚甲基蓝和腐殖酸。结果表明，吸附量与比表面积和孔体积有密切关系。粉煤灰的比表面积和孔容越大，对亚甲基蓝和胡敏酸的吸附能力越强。不同粉煤灰样品对MB和HA的吸附量分别可达7和10 mg/g。溶液pH值也会影响粉煤灰对腐殖酸的吸附，pH值越高，吸附量越低。离子强度也会影响HA吸附。
Several fly ash samples were collected and their physico-chemical properties were characterised using N2adsorption, XRD, SEM, and pH titration. These fly ash samples were applied as low-cost adsorbents for removal of methylene blue and humic acid from aqueous solution. It is found that the adsorption has a close relationship with surface area and pore volume. Higher surface area and pore volume of fly ash will result in higher adsorption of methylene blue (MB) and humic acid (HA). The adsorption of MB and HA on various fly ash samples can reach 7 and 10mg/g, respectively. Solution pH will also influence humic acid adsorption on fly ash and higher pH will result in lower adsorption. Ionic strength will also influence HA adsorption.