Corrosion Inhibition by Co-Immobilized Lysozyme and Lipase in Circulating Cooling Water System  

作　　者：Liu Fang Lü Yucui Jiang Guofei Chen Xiaorui Sun Juan Zhao Chaocheng 

机构地区：[1]State Key Laboratory of Petroleum Pollution Control, Department of Environmental and Safety Engineering, China University of Petroleum, Qingdao 266580

出　　处：《China Petroleum Processing & Petrochemical Technology》2017年第2期21-32,共12页中国炼油与石油化工（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (project 21077133);the Natural Foundation of Shandong Province and the Top Talent Project of China University of Petroleum (16RC17040003)

摘　　要：The corrosion inhibition performance of co-immobilized lysozyme and lipase was investigated in a recirculating cooling water system. Four methods were carried out in co-immobilization, and the operating parameters were optimized by using the respond surface methodology(RSM). The corrosion inhibition performance of co-immobilized lipase and lysozyme was evaluated by weight loss measurements and electrochemical measurements. The results revealed that the optimal co-immobilization method should be the sequential immobilization of lysozyme and then lipase. The inhibition efficiency was 86.10% under the optimal co-immobilized conditions. Electrochemical data showed that co-immobilized lysozyme and lipase was a mixed-type inhibitor and the corrosion inhibition efficiency was 81%.The corrosion inhibition performance of co-immobilized lysozyme and lipase was investigated in a recirculating cooling water system. Four methods were carried out in co-immobilization, and the operating parameters were optimized by using the respond surface methodology(RSM). The corrosion inhibition performance of co-immobilized lipase and lysozyme was evaluated by weight loss measurements and electrochemical measurements. The results revealed that the optimal co-immobilization method should be the sequential immobilization of lysozyme and then lipase. The inhibition efficiency was 86.10% under the optimal co-immobilized conditions. Electrochemical data showed that co-immobilized lysozyme and lipase was a mixed-type inhibitor and the corrosion inhibition efficiency was 81%.

关 键 词：CIRCULATING cooling water CO-IMMOBILIZATION LYSOZYME LIPASE corrosion INHIBITION 

分 类 号：Q814[生物学—生物工程] TE986[石油与天然气工程—石油机械设备]