从铬鞣污泥中提取胶原蛋白多肽及其应用  

Extraction of Collagen Polypeptide from Chrome Tanning Sludge and Application

作　　者：郭俊锁 王凡[2] 刘存海[2] 范娇娇[2] 

机构地区：[1]内蒙古职业技术学院化学工程系,内蒙古乌海016000 [2]陕西科技大学化学与化工学院,陕西西安710000

出　　处：《中国皮革》2015年第1期1-5,共5页China Leather

摘　　要：通过对铬鞣污泥进行酸性预处理,完成铬与污泥的有效分离;在超声协助下,用氢氧化钠和氧化钙的混合溶液提取出胶原蛋白多肽原液。用甲苯萃取出胶原蛋白多肽,胶原蛋白多肽液中Cr_2O_3含量低于70mg/kg,灰分含量低于3%,胶原蛋白多肽提取率达40%。聚乙烯醇作为分散剂,胶原蛋白多肽液(CPL)经过阳离子型聚丙烯酰胺改性,形成的改性胶原蛋白多肽液对纸张增强作用明显。当改性胶原蛋白液用量为1.5%(对绝干浆)时,纸张抗张指数提高26.7%,耐破指数提高47.2%。The chrome was separated efficiently from sludge through the acid- pretreatment of chrome tanning sludge.The collagen polypeptide liquid（CPL） was extracted by the mixture of sodium hydroxide and calcium oxide through the ultrasonic wave.The collagen polypeptide was extracted by toluene,the results show that the Cr2O3 content in CPL is lower than 70mg/kg,the ash content is lower than 3%and the extraction yield of collagen polypeptide can reach 40%.The CPL was modified by cationic polyacrylamide with polyving akohol as a dispersing agent.The modified CPL have an obvious effect on paper strength.When the dosage of modified CPL is 1.5%（to oven dry stock）,the tensile strength of paper increases 26.7%,the burst index increases 47.2%.

关 键 词：铬鞣污泥 胶原蛋白多肽 纸张增强剂 

分 类 号：X794[环境科学与工程—环境工程]