纺织科学与工程学报2024，Vol.41Issue(1)：52-57,67,7.DOI:10.3969/j.issn.2096-5184.2024.01.010
角蛋白凝胶新型制备技术及对重金属离子吸附性能研究
Research on New Preparation Technology of Keratin Gel and Its Adsorption Performance for Heavy Metal Ions
摘要
Abstract
The wool textile industry produces a large number of waste fibers and waste products every year.If these resources cannot be effectively processed,it will cause many problems such as waste of resources and envi-ronmental pollution.Extracting keratin from wool fiber and preparing it as a regenerative gel material is one of the important ways to realize the high-value recycling of waste resources.However,due to the complex chemical structure of wool and lack of processing technology,keratin gels in existing studies generally have defects such as low preparation rate or poor mechanical properties,which makes it difficult to realize industrial production.Based on this,the extraction technology and gel preparation method of wool keratin are explored,and the prepared gel is used for heavy metal ion adsorption research.In the experiment,the keratin polypeptide is extracted by the"reduction pretreatment-formic acid method",and the reduction pretreatment process is optimized.The results show that the optimal conditions of the reduction pretreatment process are TCEP mass fraction 100g/L,bath ratio 1:10,treatment time 2h,and treatment temperature 80℃.After pretreated by this process,the solubility of fibers in formic acid can reach 70%.Subsequently,keratin gels with uniform pore structure are prepared by"di-alysis-freezing method"and used to study the adsorption properties of copper ions and zinc ions.The results show that under specific conditions,the adsorption capacity and removal rate of the gel material for the two heavy metal ions can reach 0.06mg/g and about 40%,which has certain research and development value.关键词
羊毛角蛋白/凝胶材料/重金属离子/废水净化Key words
wool keratin/gel material/heavy metal ions/wastewater purification分类
轻工纺织引用本文复制引用
杨美慧,陈柯好,沈艳琴,武海良,李博..角蛋白凝胶新型制备技术及对重金属离子吸附性能研究[J].纺织科学与工程学报,2024,41(1):52-57,67,7.基金项目
陕西省自然科学基础研究计划项目(2023-JC-QN-0423),苏州大学现代丝绸国家工程实验室开放课题项目(SDGC2243). （2023-JC-QN-0423）
