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环境化学  2015 

DOI:10.7524/j.issn.0254-6108.2014.04.021

Keywords: As(Ⅴ),凹凸棒土,负载铁盐吸附剂,吸附性能

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Abstract:

研究凹凸棒土负载铁盐吸附剂的制备及其对As(Ⅴ)的吸附性能.考察了pH、凹凸棒土热改性温度、粒度、铁盐浓度等因素对吸附As(Ⅴ)性能的影响.结果表明,热改性温度为600℃的凹凸棒土负载铁盐吸附剂吸附As(Ⅴ)效果比200℃和400℃都好,其对As(Ⅴ)的吸附行为符合Freundlich模型.当pH值6.0时,600℃热改性200—400目的凹凸棒土负载0.5mol·L-1Fe(NO3)3吸附剂的最大吸附量为1.1669mg·g-1,重复使用时性能稳定,具有处理含As(Ⅴ)废水的应用前景.

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