戊二醛交联改性绿藻制备新型吸附剂吸附Cr^(6+)的研究  

Study on Adsorbing Cr^(6+) by the New Modified Absorbent of Cross-linking Green Alga with Glutaraldehyde

作　　者：万俊杰[1] 康奕菁[1] 郭伟艳[1] 黄远超[1] 

机构地区：[1]广东轻工职业技术学院食品与生物工程系,广东广州510300

出　　处：《安徽农业科学》2011年第19期11744-11747,11751,共5页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究戊二醛对绿藻进行交联改性制备新型吸附剂吸附Cr6+。[方法]分析了戊二醛质量分数、绿藻投加量、PH和温度对交联改性的影响及铬初始浓度、初始PH和改性绿藻投加量对改性藻吸附Cr6+的吸附容量的影响。[结果]当铬溶液浓度为40mg/L时,戊二醛质量分数5%、藻类投加量为0.4g、PH为-0.5、温度为40℃时改性后的藻类对铬的吸附容量最大,其吸附动力学符合Boltz-mann方程。[结论]各因素对改性藻吸附Cr6+的影响由大到小的顺序为:铬溶液浓度>pH>改性藻投加量;最佳吸附条件为铬溶液浓度为80mg/L,pH为5,改性藻量为:0.4g;吸附容量可达19.19mg/g。[Objective]The aim was to study the new midified absorbent of cross-linking green alga with glutaraldehyde for adsorbing Cr6＋.[Method]The effects of glutaraldehyde mass fraction,green alga dosage,initial pH and temperature on cross-linking modifying and the effects of initial Cr6＋ concentration,initial PH and modified green alga dosage on adsorbing Cr6＋ were analysed.[Result]The results showed that when the glutaraldehyde mass fraction was 5%,green alga dosage was 0.4 g,initial pH was-0.5 and temperature was 40 ℃,the adsorption capacity of modified green alga was maximum for 40 mg/L Cr6＋ solution.[Conlusion]The effects for influencing factors of adsorbing Cr6＋ with modified alga followed initial Cr6＋ concentration 〉 initial pH 〉 modified green alga dosage and the best conditions were initial Cr6＋ concentration 80 mg/L,initial pH 5 and modified green alga dosage 0.4 g,the maximum adsorption capacity was 19.19 mg/L.

关 键 词：戊二醛 改性 六价铬 吸附 

分 类 号：X703[环境科学与工程—环境工程]