粉煤灰改性条件的优化及其对孔雀石绿吸附性能的影响  

Optimization of modification conditions of coal fly ash and its effect on adsorption performance of basic green

作　　者：王琰 王海涛[2] 刘国昌 常娜[3] 孙玮 WANG Yan;WANG Haitao;LIU Guochang;CHANG Na;SUN Wei(The Institute of Seawater Desalination and Multipurpose Utilization,MNR(Tianjin),Tianjin 300192,China;School of Environmental Science and Engineering,Tiangong University,Tianjin 300387,China;School of Chemical Engineering and Technology,Tiangong University,Tianjin 300387,China)

机构地区：[1]自然资源部天津海水淡化与综合利用研究所,天津300192 [2]天津工业大学环境科学与工程学院,天津300387 [3]天津工业大学化学工程与技术学院,天津300387

出　　处：《石油化工应用》2024年第5期100-106,共7页Petrochemical Industry Application

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2023-QR-02)。

摘　　要：以粉煤灰(CFA)为原料,通过控制酸碱改性剂投加顺序、酸碱改性剂用量等改性因素制备出六种不同形貌、不同比表面积的改性粉煤灰(MCFA),通过SEM、BET、EDS及XRD等表征手段对MCFA的结构进行表征。以配制的孔雀石绿(BG)染料溶液模拟染料废水,通过对BG染料的去除效果来确定最佳改性工艺条件。结果表明,采用酸碱两步改性法对CFA吸附能力的提升效果最为显著,对BG染料的去除率由61.48%提升至97.92%,吸附量由61.48 mg/g提高至97.92 mg/g,其形貌的变化表现出了对吸附能力的提高与改善。Using coal fly ash(CFA)as raw material,six kinds of modified coal fly ash(MCFA)with different morphology and specific surface area were prepared by controlling the order of modifier addition and the amount of modifier.The structure of MCFA was characterized by SEM,BET,EDS and XRD.The prepared basic green(BG)dye solution was used to simulate the dye wastewater,and the optimum modification process conditions were determined by the influence of BG dye removal rate.The results showed that the acid-base two-step modification method had the most significant effect on the adsorption efficiency of CFA,and the removal rate of BG dye increased from 61.48%to 97.92%,the adsorption capacity increased from 61.48 mg/g to 97.92 mg/g.The change of morphology showed the improvement of adsorption capacity.

关 键 词：无机非金属材料 改性粉煤灰 吸附 染料废水 孔雀石绿 

分 类 号：X788[环境科学与工程—环境工程]