摘要
研究了竹炭对溶液中Cd(II)的吸附行为。考察了酸处理、pH值、竹碳与溶液的接触时间、投料量、吸附温度和Cd(II)的初始浓度对吸附的影响。结果表明竹炭对镉离子的吸附是放热过程,并且符合Freundlich吸附模型,在初始浓度为15mg.L-1、最佳酸度及287K条件下,未经处理的竹炭饱和吸附量达到11.0mg.g-1,增加竹碳的用量,镉离子吸附率可达99%以上。
The removal of Cd （Ⅱ） ionic from waste water using bamboo charcoal adsorption has been investigated as a function of acid treated, contact time, pH, temperature and BC dosage. The results showed that the adsorption of Cd （Ⅱ） is a exothermic process and the adsorption data fit the Freundlich model. Under the best conditions and initial concentration of 15 mg·L^-1, the untreated bamboo charcoal adsorption capacity reached 11.0 mg·g^-1 and cadmium ion adsorption percentage reached above 99 %.
出处
《科学技术与工程》
2009年第11期3009-3012,共4页
Science Technology and Engineering
基金
浙江省教育厅(20070512)资助
关键词
竹炭
酸处理
镉离子
吸附
bamboo charcoal acid treated cadmium ion adsorption
