碱联合热活化过硫酸盐提取污泥中蛋白质的效能  

Efficiency of Extracting Protein From Sludge by Alkali Combined With Thermal Activated Persulfate

作　　者：刘晓艳[1] 郝永豪 曾令辉 许志凯 熊文轩 郭绍东 LIU Xiao-yan;HAO Yong-hao;ZENG Ling-hui;XV Zhi-Kai;XIONG Wen-xuan;GUO Shao-dong(School of Urban Construction,Wuhan University of Science and Technology,Wuhan Hubei 430065,China)

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430065

出　　处：《辽宁化工》2023年第12期1764-1767,共4页Liaoning Chemical Industry

基　　金：大学生创新创业训练计划项目(项目编号:2021ZA022)。

摘　　要：为了资源化利用污泥,采用CaO耦合80℃热活化过硫酸盐提取污泥中蛋白质,以市政污水厂剩余活性污泥为原材料,考察了较短时间内不同投量下CaO对过硫酸盐提取蛋白质效能的影响。结果表明:每克干污泥投加200~250 mg的CaO,同时处理时间控制在15~30 min,能够显著提高上清液中总蛋白质质量浓度,从原泥的743 mg·L^(-1)提高到6000 mg·L^(-1)左右。同时污泥中氨氮、总磷及多糖均从污泥中释放到了液相中,紧密附着型胞外聚合物在热碱和氧化作用下提供了大量蛋白质。In order to recycle sludge,CaO coupling 80℃thermal activated persulfate was used to extract protein from sludge.The residual activated sludge of municipal sewage plant was used as raw material.The effects of CaO on the efficiency of protein extraction by persulfate in a short period of time at different dosage were investigated.The results showed that adding 200~250 mg CaO per 1 g dry sludge and controlling the treatment time within 15~30 min could significantly increase the crude protein mass concentration of supernatant from 743 mg·L^(-1)to about 6000 mg·L^(-1).Simultaneously,ammonia nitrogen,total phosphorus and polysaccharide in the sludge were released into the liquid phase,and the tightly attached extracellular polymeric substances provided a large amount of protein under the action of heat alkali and oxidation.

关 键 词：蛋白质提取 污泥破解 氧化钙 

分 类 号：X705[环境科学与工程—环境工程]