橙皮生物吸附剂的制备及对水中Cr^(6+)的吸附研究  

Preparation of the Biological Adsorbent of Orange Peel and Its Adsorption to Cr^(6+) in Water

作　　者：张玮[1] 王波[1] 娄海涛[1] 

机构地区：[1]武汉生物工程学院化学与环境工程系,湖北武汉430415

出　　处：《安徽农业科学》2011年第6期3496-3497,3518,共3页Journal of Anhui Agricultural Sciences

基　　金：武汉市教育局资助项目(2009K097)

摘　　要：[目的]使用柠檬酸和氢氧化钠对橙皮进行改性,对含有Cr6+的重金属废水进行了吸附研究。[方法]研究了溶液的pH值、溶液初始浓度、吸附剂用量、吸附时间及温度等因素对吸附的影响,并比较了酸改性和碱改性这2种改性橙皮的吸附作用。[结果]酸改性的橙皮对Cr6+有较好的吸附效果,在pH值为1.0左右,初始浓度5.0 mg/L,用量为0.6 g,温度50℃,时间为80 m in的条件下,酸改性橙皮对Cr6+的吸附率达到了96.52%。[结论]化学改性提高了橙皮的吸附能力,在废水处理中有很高的应用价值。[Objective] The adsorption of the the orange peel,improved by means of citric acid and sodium hydroxide,to heavy metal：Cr6＋in wastewater,was studied.[Method] The effect of the pH value and initial concentration of solution,the dosage of adsorbent,sorption time and temperature on the adsorption was experimented and the adsorption efficiency of two kinds of orange peel modified by acid and alkali was compared.[Results] The orange peel modified by acid had a good effect on the adsorption of Cr6＋and under the condition of the pH value of around 1.0,the initial concentration of Cr6＋in the solution of 5.0 mg/L,the dosage of adsorbent of 0.6 g,the sorption temperature of 50 ℃,the sorption time for 80 minutes,the adsorption rate of the modified orange peel to Cr6＋reached 96.52%.[Conclusion] The chemical modification improved the adsorption capacity of orange peel to Cr6＋,which had a high application value in the treatment of wastewater.

关 键 词：橙皮 生物吸附剂 制备 Cr6+ 吸附 

分 类 号：X174[环境科学与工程—环境科学]