期刊论文

中文

中南林业科技大学学报

1673-923X

2012

32

12

88-91,103

10.14067/j.cnki.1673-923x.2012.12.023

国家环保部项目[200909066] 国家科技部项目[2012BAC09803-4] 国家林业局项目[2010-43] 湖南省教育厅重点学科与重点实验室项目

本校为第一机构

以水洗和酸洗蛭石为吸附剂,研究了固/液吸附体系中Mn~(2+)的吸附特性。结果表明,水洗和酸洗蛭石体系Mn~(2+)离子的吸附都存在明显的离子和吸附剂浓度效应,水洗蛭石体系Mn~(2+)离子的去除率显著高于酸洗蛭石体系。在酸洗过程中,蛭石表面部分吸附位被H~+离子占据,降低了阳离子的交换能力。酸洗蛭石的吸附容量低,在吸附过程中H~+离子的解吸会降低出水溶液的pH值,不宜作为湿地基质填料。

The experiments were conducted to analyze the characteristics of Mn^2＋ ion adsorption in liquid/solid systems by using water and acid rinsed vermiculite samples as the sorbents. Significant adsorbate and adsorbent effects were observed in the tested systems for both water and acid rinsed samples. The vermiculite samples rinsed by distilled water had much more higher Mn^2＋ ion removal rate than the samples rinsed by diluted sulfuric acid. The adsorption capacity of vermiculite was lowered in the acid rinsing process due to occupation of large ...