皂河沉积物对苯酚的吸附特性研究  

Study on Absorption Characteristics of Sediments from Zao River on Phenol

作　　者：张雪峰[1] 冯贵颖[2] 呼世斌[2] 吴焕利[1] 梁博[2] 

机构地区：[1]西北农林科技大学资源与环境学院,陕西杨凌712100 [2]西北农林科技大学理学院,陕西杨凌712100

出　　处：《安徽农业科学》2010年第3期1395-1398,1485,共5页Journal of Anhui Agricultural Sciences

摘　　要：[目的]了解皂河沉积物的环境化学意义及其在水体自净中的作用。[方法]以皂河上、中、下游的沉积物为研究对象,探讨其对苯酚的吸附特性,并考察系统pH值、温度等对其吸附特性的影响。[结果]皂河沉积物对苯酚的吸附特性可较好地用Langmuir等温吸附方程描述;皂河沉积物对苯酚的咐附不是单一的分子吸附,而是多种吸附(物理吸附和化学吸附)共同作用的结果;弱酸性(pH>6.0)条件下,皂河沉积物对苯酚具有较大的吸附容量和吸附强度;35℃时皂河沉积物对苯酚的吸附容量和吸附强度高于其他温度处理;皂河下游沉积物对苯酚的吸附容量和吸附强度小于上、中游沉积物。[结论]皂河沉积物对苯酚具有较大的吸附容量和较好的吸附性能。[ Objective] The aim was to study the environment and chemistry meaning of sediments from Zao River and theirfunction in water self-purifieation. [ Method] With the sediments from upper, middle and lower reaches of Zao River as the studied objects, their absorption characteristics on phenol was explored and the effects of pH value, temperature on their absorption characteristics were investigated. [ Resuh] The absorption characteristics of sediments from Zao River on phenol could be described with Langmuir isotherm equation. The absorption of sediments from Zao River on phenol was not the single molecular adsorption, but was the results of interaction of many kinds of absorption （physical absorption and chemical absorption）. In weakly acidic condition （pH 〉 6.0） , the sediments from Zao River had bigger adsorption capacity and adsorption intensity on phenol. The absorption capacity and adsorption intensity of sediments from Zao River on phenol at 35 ℃ was higher than those in other temperature treatments. The absorption capacity and adsorption intensity of sediments from lower reaches of Zao River on phenol were smaller than those of sediments from upper and middle reaches of Zao River. [ Conclusion ] The sediments from Zao River bad bigger absorption capacity and good adsorption properties on phenol.

关 键 词：皂河 沉积物 苯酚 吸附 

分 类 号：X592[环境科学与工程—环境工程]