铬革削匀屑脱铬法的研究  

Dechroming Method of Leather Shavings

作　　者：王远亮[1] 黄兴春[1] 

机构地区：[1]重庆大学应用化学系

出　　处：《中国皮革》1991年第12期7-11,共5页China Leather

摘　　要：制革厂的铬革皮屑和碎片因含铬认为是污染物,由于不能成革认为是废物。如不脱铬处理,则铬革碎皮和皮屑将成为制革厂难于处理的问题。但这类皮屑中有高含量的蛋白质(如胶原占其蛋白质量的90％以上),是一种可利用资源。本文主要研究削匀屑的脱铬问题。实验证明,采用碱性脱铬剂—氧化剂配合使用,脱铬效果显著,用碱连续六次洗涤,使其铬含量甚微,达到实用化程度。脱铬后的产物为纯白色,可以进行多种用途如提取明胶、回收胶原、获取高含量蛋白质的产品等的利用。文中对削匀屑的处理条件及预处理和稳定化因素等作了较详细地讨论。The chrome-tanned leather splits, shavings and trimmings in the tannery has been accepted as pollution and waste because they contain trivalent chromium and is not capable of leather resultant.But they involve a lot of proteins especially of which consist more than 90 per cent of collagen. So they may be a eproducible source even though the chromium of them is eliminated. The elimination of shavings is an important contents in this paper.Experimental results show that to eliminate chromium from the shavings is to use alkaline dechroming and oxidizing agents effectively. Take for example, the chromium content in shavings is trace and the products are very white if the proccessing is washin continuously six times. These products have many uses, production of gelatin, recovery of collagen, extraction of high qualitative protein, materials immobilizing enzymes and cells, and so on. In this paper, the treatment conditions, pretreatment and stablization of shavings are discusssed also.

关 键 词：废铬革屑 皮革 脱铬法 处理 

分 类 号：X794.05[环境科学与工程—环境工程]