水生植物根系对多环芳烃(萘)吸附过程研究  

Experimental Studies of Adsorption of Naphthalene on Roots of Eichhornia crassipes Solms

作　　者：刘建武[1] 林逢凯[1] 王郁[1] 胥峥[1] 张啸[1] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237

出　　处：《环境科学与技术》2003年第2期32-34,共3页Environmental Science & Technology

摘　　要：对萘在水葫芦根系的吸附过程进行模拟研究 ,结果表明 ,新鲜水葫芦根系对萘不仅具有吸附作用 ,而且还具有吸收或根际微生物降解等作用 ;水葫芦根系吸附萘的初始速率与浓度符合一级反应动力学 ;吸附过程可用Langmuir公式表示的单分子层吸附模型描述。Experiments were conducted to investigate the adsorption of naphthalene on Eichhornia crassipes Solm roots. The results showed that the initial adsorption rate against concentration of naphthalene fit the first order kinetic model and adsorption process could be well described by Langmuir equation, belonging to mono layer adsorption. The results also indicated that removal of naphthalene in water was attributed to the adsorption of fresh roots and the biodegradation of microorganism existed on roots surface.

关 键 词：水生植物 多环芳烃 水葫芦 根系 萘 吸附等温式 单分子层吸附 水体污染 植物修复 

分 类 号：X52[环境科学与工程—环境工程] X173