改性牡蛎壳粉的制备及其对Cd^(2+)的吸附  

Preparation of modified oyster shell powder and the adsorption of Cd^(2+) in water

作　　者：苏永昌[1,2] 林荣晓 刘秋凤[1,2] 刘淑集[1,2] 吴成业[1,2] 

机构地区：[1]福建省水产研究所国家海水鱼类加工技术研发分中心(厦门)福建省海洋生物增养殖与高值化利用重点实验室,福建厦门361013 [2]福建省海洋生物资源开发利用协同创新中心,福建厦门361013 [3]漳浦县海洋与渔业局,福建漳浦363200

出　　处：《福建水产》2015年第6期460-470,共11页Journal of Fujian Fisheries

基　　金：福建省属公益类科研院所基本科研专项:牡蛎壳制备水质改良剂的研究(项目编号:2011R1003-3)

摘　　要：以十二烷基磺酸钠(SDS)为改性剂,制备了有机改性牡蛎壳粉,并以Cd2+的去除率为指标进行正交实验分析,确定最佳改性工艺。通过红外光谱(FTIR)、扫描电镜(SEM)、能谱(EDS)对有机牡蛎壳粉进行表征,并进行了其对Cd2+的吸附动力学研究。正交实验结果表明,最佳改性工艺条件为:SDS用量为牡蛎壳粉质量的15%,改性时间为120 min,改性温度为60℃,改性p H值为7。FTIR、SEM和EDS图谱表明SDS对牡蛎壳粉的改性是成功的。动力学研究表明改性牡蛎壳粉对Cd2+的吸附符合准二级动力学方程。Sodium dodecyl sulfonate was added to the oyster shell powder aqueous solution and SDS- oyster shell powder was prepared. Orthogonal experiment was carried out to explore the best modification process,FTIR、SEM、EDS and adsorption kinetics of Cd^2＋were researched. The results showed the best modified condition of oyster shell powder was： SDS 15% of oyster shell powder,modified time was 120 min,temperature was 60℃,modification p H value was 7. FTIR,SEM and EDS spectrum indicated that the modification was successful. The kinetics research showed that the adsorption of Cd^2＋was conformed to the pseudo- second- order equation.

关 键 词：牡蛎壳粉 改性 CD^2+ 吸附动力学 

分 类 号：S917.4[农业科学—水产科学]