一种基于胶原蛋白改性的阳离子絮凝剂的制备及表征  

Preparation and characterization of a cationic flocculant based on modified collagen

作　　者：王学川[1] 张莎[1] 周亮 任龙芳[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021 [2]西安市环境保护科学研究院,陕西西安710002

出　　处：《功能材料》2011年第12期2221-2224,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(20876090);陕西省"13115"科技创新工程重大科技专项资助项目(2010ZDKG-61)

摘　　要：以胰蛋白酶为水解剂对明胶进行水解后,利用鞣制化学中的铁鞣机理使Fe(Ⅲ)络合在水解后所得胶原蛋白分子上,从而制备出了胶原蛋白改性阳离子絮凝剂,并将其用于废弃钻井液的絮凝处理,以CODCr去除率、悬浮物含量为指标,考察了不同络合反应条件对废弃钻井液絮凝效果的影响。利用IR、XRD、荧光光谱等对产物进行检测与表征。实验结果表明此种絮凝剂制备的最佳反应条件为反应时间4h,体系pH值为2.6,m(胶原)∶m(Fe2(SO4)3)=1∶1.4,温度35℃。所制备的絮凝剂用于废弃钻井液的絮凝时,其CODCr去除率为73.1%,悬浮物含量从2115mg/L降至330mg/L。The gelatin was hydrolyzed by trypsin and the collagen protein solution was obtained.Then Fe（Ⅲ） was combined on it for iron tanning mechanism in tanning chemical.So modified collagen flocculant was prepared and used in the treatment of waste drilling water.The influence of different conditions on the treatment effect was studied by CODCr removal rate and suspended solids content.IR,XRD and fluorescence spectrum were used to characterized the structure of product.The result indicated that the best reaction condition on the preparation of flocculant was： reaction time was 4h,pH was 2.6,the quality ratio of collagen and Fe2（SO4）3 was 1︰1.4,the temperature was 35℃.When the flocculant prepared under this condition was used in the treatment of waste drilling water,CODCr removal rate was 73.1% and suspended solids content decreased from 2115 to 330mg/L.

关 键 词：絮凝剂 废弃钻井液 胶原蛋白 硫酸铁 

分 类 号：TB39[一般工业技术—材料科学与工程]