A biosorbent for perchlorate removal from aqueous solution

摘要：

Protonated cross-linked chitosan was used to remove perchlorate from aqueous solution. The equilibrium data fitted well with Langmuir and Freundlich isotherm models, and the maximum monolayer adsorption capacity was 45.455 mg·g-1. The optimal pH value was determined to be about 4.0. The proper actual contact time was 8.1 min in column tests and the effluent perchlorate could be steadily kept below 24.5 μg·L-1 up to about 95 bed volumes with the influent perchlorate of 10 mg·L-l. The presence of other anions weakened the perchlorate adsorption. The adsorbents could be well regenerated by NaOH with pH 12 and reused at least for 15 cycles.

关键词： Protonated cross-linked chitosan Perchlorate Adsorption Regeneration

作者: Yanhua Xie Shiyu Li Guangli Liu Ke Wu Jun wang

作者单位: School of Environmental Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China

会议类型: 国际会议

会议名称: International Conference on Environment Simulation and Pollution Control(第六届环境模拟与污染控制学术研讨会)

会议地点: 北京

会议语种:英文

页码: 1-2

在线出版日期: 2009-11-01（万方平台首次上网日期，不代表论文的发表时间）