摘要
研究了不溶性腐殖酸(IHA)对六价铬(Cr(Ⅵ))的吸附作用及反应接触时间、pH、IHA投加量、温度等对吸附作用的影响,确定了最佳反应条件。实验表明,在反应接触时间60min、酸性pH7左右的水溶液条件下,IHA对Cr(Ⅵ)去除率可达98%。绘制了IHA对Cr(Ⅵ)的反应动力学曲线和吸附等温线。
Influence of insolubilized humic acid on adsorption of hexavalent chromium in the sand matrix was investigated. Effects of reaction time, pH, concentrations of IHA and adding amount etc. on the adsorption of Cr（Ⅵ） were examined while the optimum reaction conditions were determined. Study indicated that the maximum removal rate of chromium by insolubilized humic acid was up to 98% in aqueous solutions with the reaction time of 6h at pH7. The kinetic curves and the adsorption isotherm curves of chromium affected by insolubilized humic acid were drawn.
出处
《环境保护科学》
CAS
2008年第3期34-38,共5页
Environmental Protection Science
关键词
不溶性腐殖酸
六价铬
砂土
吸附
Insolubilized Humic Acid Hexavalent Chromium Sand Adsorption
