改性甘蔗渣吸附废水中低浓度Cu^(2+)的研究  

Study on the adsorption of low concentration Cu^(2+) in wastewater by modified bagasse

作　　者：廖芳丽[1] 何莎[1] 江莎莎[1] 

机构地区：[1]惠州学院化学工程系,广东惠州516007

出　　处：《环境污染与防治》2012年第2期65-67,76,共4页Environmental Pollution & Control

摘　　要：利用离子液氯化-1-己基-3-甲基咪唑对甘蔗渣进行改性,利用改性甘蔗渣吸附去除模拟废水中低浓度的Cu2+,并对比了较优条件下甘蔗渣改性前后的Cu2+吸附性能。结果表明,溶液pH、改性甘蔗渣投加量、吸附时间对改性甘蔗渣吸附Cu2+均有一定的影响,较佳的溶液pH为5.41、改性甘蔗渣投加量为0.30g、吸附时间为130min;吸附温度升高Cu2+吸附率反而降低,因此选择在室温下进行吸附反应为宜;在以上较优条件下,改性甘蔗渣和甘蔗渣的Cu2+吸附率分别为83.20%和63.83%,前者的Cu2+吸附率提高了30.35%。The bagasse was modified in ionic liquid 1-hexyl-3-methylimidazolium chloride（C10H19ClN2）,and the obtained modified bagasse was applied as adsorbent for removal of low concentration Cu2＋ in simulated wastewater.The effect of pH,modified bagasse dosage,adsorption time on Cu2＋ removal efficiency was investigated and the adsorption performance of modified bagasse was compared with that of non-modified bagasse.Results showed that the optimal treatment conditions were pH 5.41,modified bagasse 0.30 g and adsorption time of 130 min.The Cu2＋ removal efficiency was increased with increasing the adsorption temperature,so the adsorption should be operated at the room temperature.Under these optimal adsorption conditions,the Cu2＋ removal rate of modified bagasse and non-modified bagasse was 83.20% and 63.83% respectively,means bagasse modification increased Cu2＋ removal rate by 30.35%.

关 键 词：改性甘蔗渣 吸附 CU2+ 

分 类 号：X703[环境科学与工程—环境工程]