固定化复合脱毛酶脱毛废液的循环利用  

Unhairing Effluent Rcycling Technology with Immobilized Multi-enzymes

作　　者：张玉红[1] 但年华[1] 但卫华[1] 何灿[1] 

机构地区：[1]四川大学制革清洁技术国家工程实验室,四川成都610065

出　　处：《皮革科学与工程》2015年第4期42-49,共8页Leather Science and Engineering

基　　金：国家科技支撑计划项目(项目编号:2011BAC06B11);四川省科技创新苗子项目;课题编号:0030405301429

摘　　要：采用固定化复合酶制剂A-1,结合无灰少硫辅助脱毛技术,研究基于固定化复合脱毛酶脱毛废液的循环利用技术。结果表明,随着循环批次的增加,脱毛液的酶活力呈梯度递减,p H降低,所需脱毛时间增加。在不影响成革质量的前提下,固定化复合脱毛酶制剂A-1脱毛废液可循环利用3次仍保持有21%的酶活力。为了在连续生产中维持脱毛废液酶活力不变,设计了基于脱毛废液循环的酶量补加实验,结果表明:补加酶45 U/g脱毛效果和成革质量最佳。In this paper, in order to study the unhairing effluent recycling technology with immobilized multi-enzymes,used the immobilized multi-enzymes A-1, combined with a supplement unhairing technology with lower sulphide and lime-free. The results show that with the increase of circulating batch,enzyme activity showed a gradient of diminishing,p H decreased and the time of unhairing increased.Results indicate that the unhairing effluent of immobilized multi-enzymes A-1 can recycle 2-3 times without affecting the quality of the leather,still leaves 21% of the enzyme activity.In order to maintain the same enzyme activity of the unhairing effluent, enzyme additional experimental was designed,results showed that the amount of additional enzyme was 45 U/g, both unhairing results and quality finished leather are best.

关 键 词：固定化 复合酶 脱毛 废液循环 

分 类 号：X794[环境科学与工程—环境工程]