改性含铝废渣对水体中刚果红的吸附行为  

Adsorption behavior of Congo red in water by modified aluminum containing waste residue

作　　者：韩晓刚 严炜鑫 王一鸣 穆金鑫 张雨哲 张淳之 陆永生[3] Han Xiaogang;Yan Weixin;Wang Yiming;Mu Jinxin;Zhang Yuzhe;Zhang Chunzhi;Lu Yongsheng(Changzhou Qingliu Environmental Protection Technology Co.LTD.,Changzhou 213144,China;School of Environmental Science and Engineering,Changzhou University,Changzhou 213164,China;School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]常州清流环保科技有限公司,江苏常州213144 [2]常州大学环境科学与工程学院,江苏常州213164 [3]上海大学环境与化学工程学院,上海200444

出　　处：《环保科技》2024年第3期22-27,共6页Environmental Protection and Technology

摘　　要：采用Ca(OH)_(2)对含铝废渣(RAS)改性,制备改性材料(MAS),对其结构、形貌等进行表征,并考察其对刚果红(CR)的吸附效果。结果表明:当CR初始浓度为100 mg/L,pH=5,投加0.3 g MAS,在25℃水浴中吸附40 min时,CR去除率可以达到99.65%。其对CR的吸附趋势符合二级动力学,吸附等温线满足Freundlich等温线模型。改性后得到的MAS相较于RAS,具有更大的比表面积,其对于CR的作用机制是膜扩散和内扩散相互作用,且膜扩散过程吸附速率最快。The modified material was prepared by modifying raw aluminum slag(RAS) with Ca(OH)_(2).The results showed that at 25 ℃,when the dosage of modified aluminum slag(MAS) was 0.3g,the initial concentration of Congo red(CR)was 100 mg/L,pH=5 and the adsorption time was 40 min,the CR removal rate was 99.65%.The adsorption trend of CR accorded with the second-order kinetics,and the adsorption isotherm met the Freundlich isotherm model.Compared with RAS,the MAS has a larger specific surface area.Its mechanism of action on CR is the interaction of membrane diffusion and internal diffusion,and the adsorption rate in the membrane diffusion process is the fastest.

关 键 词：改性 含铝废渣 刚果红 吸附 废水 

分 类 号：X703[环境科学与工程—环境工程]