摘要
总结了活性炭吸附法去除废水中重金属的机理和规律进行了,其吸附机理有离子交换、络合、化学吸附等,吸附平衡模式除了有Langmuir模式和Freundlich模式之外,还有表面络合模式;分析了pH、溶液的离子强度和初始浓度对单组分溶液吸附去除率的影响;论述了多个金属离子共存时活性炭对金属离子的吸附影响以及金属离子与有机物共存时活性炭对金属离子的吸附影响;最后展望了活性炭在重金属废水处理中的应用前景,提出了一些建议。
The adsorption niechanisms and rules of adsorption of heavy metals by ae, tivated earbon were summarized Tile mechanisms of heavy metal ions binding to activated carbons includes ion exchange, conplex, chemical adsorption etc. The sorption usually conforms to Langmuir model and Freundlieh model, surface complex ft.marion model, The influence of pH, ionic stretrgth and initial concentration on activated carbon adsorption was discussed. Gmpetitive adsorption of several heavy metals arid several organisms and heavy metal also were discussed. At the end. the application prospects of activated carbon on the treatment of wastewater corttaining heavy metals were forecast, and some suggestions were proposed.
