净水技术Issue(3)：73-78,6.DOI:10.15890/j.cnki.jsjs.2017.03.012
生物土壤结皮的表征分析与吸附去除水体中镉的试验
Characterization Analysis of Biological Soil Crust and Experiment of Removal and Adsorption of Cadmium from Water Body
摘要
Abstract
The experiment showed that irrigation water,soil and biological soil crust (BSC) were collected from four locations of typical paddy field environment in south China.According to the data of Cd concentration in BSC from four locations,BSC with the lowest level of Cd pollution was sieved,and its adsorptive property was characterized and tested.Result showed BSC was consisting of Biological components and mineral,and a large number of functional groups were on its surface.Adsorption capacity had a linear relation with equilibrium concentration,and the maximum adsorption capacity and remove rate was 8.481 mg/g and 99.79％,respectively.BSC was able to remove 87.03％ of Cd when pH value was 7.It presented the feature of preferential adsorption in high calcium ions system,and showed good removal efficiency of cadmium complex whose molecule weight was less than 107.In a result,BSC had potential value to remove the cadmium in water.关键词
生物土壤结皮/表征分析/镉去除/吸附与去除/水体Key words
biological soil crust(BSC)/characterization analysis/cadmium removal/adsorption and removal/water body分类
资源环境引用本文复制引用
李智义,刘斌,彭亮,宋慧娟,杨梅,邓晓舟..生物土壤结皮的表征分析与吸附去除水体中镉的试验[J].净水技术,2017,(3):73-78,6.基金项目
国家自然科学基金(41401260) （41401260）
湖南省科技重点项目(2015NK3015,2016NK2107) （2015NK3015,2016NK2107）
湖南农业大学“1515”人才计划 （）
