改性竹炭脱除贝类酶解液中的重金属镉  

Removal of Cadmium from Shellfish Enzymatic Hydrolysates by Modified Bamboo Charcoal

作　　者：张居里 陈宏[1,3,2] 刘旭 张婷婷[1,2] 张文婷[1,2] 励建荣[3,2] Zhang Juli1,3, Chen Hong1,2,3 , Liu Xu1,3 , Zhang Tingting1,3, Zhang Wenting1,3, Li Jianrong2,3(1. College of Chemistry and Chemical Engineering; 2. College of Food Science and Technology; 3 Food Science Research Institute, Bohai University, Jinzhou 12101)

机构地区：[1]渤海大学化学化工学院,锦州121013 [2]渤海大学食品科学研究院,锦州121013 [3]渤海大学食品科学与工程学院,锦州121013

出　　处：《化学通报》2018年第4期372-375,共4页Chemistry

基　　金："十二五"国家科技支撑计划项目(2012BAD29B06);辽宁省科技厅攻关项目(2015103020);泰山学者蓝色产业领军人才团队支撑计划项目(鲁政办字(2015)19号)资助

摘　　要：以蚶子贝肉酶解液为材料,利用聚天冬氨酸(PAsp)改性的竹炭吸附脱除酶解液中的重金属镉。考察了pH、脱除时间、竹炭投加量和温度对酶解液中镉脱除率的影响,并在单因素试验基础上通过响应面法确定了镉的最佳脱除条件。当pH为5.0、反应时间为25min、竹炭投加量(10m L酶解液)为0.26g,重金属镉的脱除率可达96.59%。研究表明,PAsp改性竹炭能显著提高吸附重金属的效率和能力,可用于脱除蚶子贝肉酶解液中的镉。Bamboo charcoal modified by polyaspartic acid（ PAsp） was used for the removal of cadmium from shellfish enzymatic hydrolysates. The effects of pH,adsorption time,bamboo charcoal dosage and temperature on the cadmium removal rate were investigated,and the conditions of cadmium removal were optimized by response surface method. The cadmium removal rate was up to 96. 59% when pH is 5. 0,adsorption time is 25 min,and the bamboo charcoal dosage is 0. 26 g in 10 m L enzymatic hydrolysate. Therefore,PAsp modified bamboo charcoal can significantly improve the efficiency and ability of adsorbing cadmium,and can be used for the removal of cadmium from shellfish enzymatic hydrolysates.

关 键 词：贝类 酶解液 聚天冬氨酸 竹炭 镉 

分 类 号：X703[环境科学与工程—环境工程]