桔皮吸附水中残杀威的研究  

Orange peel as an adsorbent for removing propoxur from aqueous solutions

作　　者：陈建秋[1,2] 杨轲[2] 胡志军[2] 卢亮[2] 王南溪[2] 季荣[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,南京210093 [2]中国药科大学分析化学教研室,南京210009

出　　处：《环境工程学报》2010年第7期1488-1492,共5页Chinese Journal of Environmental Engineering

基　　金：国家环保公益性行业科研专项(200809016-01);江苏省环境工程重点实验室开放基金(KF2009008)

摘　　要：为研究改性桔皮吸附水中残杀威的吸附性能和吸附机理,实验考察了不同条件（提取液pH、残杀威浓度、吸附剂用量、吸附时间和盐离子浓度）对残杀威吸附效果的影响。研究发现,由于改性剂破坏了桔皮表面活性基团,从而降低了桔皮吸附剂对残杀威的吸附效果。实验结果还表明,当溶液pH在2~4时残杀威更利于被吸附剂吸附;在25℃的条件下,吸附剂对残杀威的吸附在40 min左右达到平衡;当残杀威浓度为61.46 mg/L时,100 mL残杀威溶液中吸附剂的最佳投加量为0.2 g;低盐离子浓度有利于对残杀威的吸附。桔皮吸附剂对残杀威的吸附规律可用Langmuir吸附等温式描述。Adsorption experiments for adsorption behaviour of propoxur on abandoned orange peel were carried out to investigate the effcet of pH,concentration of ion,amounts of sorbent,adsorption time and concentration of propoxur on the adsorption.Results showed that the removal effect of propoxur by modified orange peel was lower than that of orange peel.The results indicated that it was favorable for the adsorption of propoxur under acidic conditions（pH 2～4）.The adsorption process almost attained equilibrium in 40 min at 25℃.The optimal amounts of sorbent was 0.2 g when the concentration of propoxur was 61.46 mg/L in water.And results also showed that low concentration of ion was better for the adsorption.Finally,the adsorption isotherms can be described by Langmuir isotherms.

关 键 词：桔皮 化学改性 残杀威 生物吸附剂 吸附 

分 类 号：X703[环境科学与工程—环境工程]