Investigating the Bio-corrosion Inhibition Effect of Enzymes in Circulating Cooling Water System
محل انتشار: مجله علوم و فن آوری نفت، دوره: 7، شماره: 3
سال انتشار: 1396
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 56
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شناسه ملی سند علمی:
JR_JPSTR-7-3_002
تاریخ نمایه سازی: 29 آذر 1402
چکیده مقاله:
To avoid the secondary pollution that inorganic corrosion inhibitor may cause in circulating cooling water, the bio-corrosion inhibition effect of lysozyme, catalase, lipase, and laccase, as the biologic inhibitors without the above problem, and the increased bio-corrosion inhibition effect of Ca+۲ and Mg+۲ are studied. An enzyme with corrosion properties was selected by rotary coupon test. The inhibition rate test and the inhibition rate of ultraviolet test of lysozyme as well as lipase’s SEM analysis and elemental analysis were used to explore its inhibition mechanism. Aiming to decrease enzyme’s usage cost, the rotary coupon test was performed to study the effect of different ion mass concentrations on enzyme activity; its inhibition effect was first analyzed, and the complex formulation of enzyme with ion and polyaspartate was then investigated. The experiment showed that among all single enzymatic reagents, lysozyme and lipase had the best corrosion inhibition effect, and when Ca+۲ mass concentration range was ۱۰۷.۷۵-۱۸۲.۵۷ mg/L, enzyme activity, microbial resistance, and corrosion inhibition properties were improved; a sample compound showed the best corrosion inhibition effect when ۱۰ mg/L, ۵۰ mg/L, and ۵۰ mg/L of lysozyme, lipase, and poly-aspartic acid respectively were used. When the corrosion speed was controlled at ۰.۰۰۵ mm/a, the inhibition efficiency was above ۹۵%.
کلیدواژه ها:
نویسندگان
CHENGLONG DUAN
College of Chemical Engineering, China University of Petroleum
TING WANG
College of Chemical Engineering, China University of Petroleum
DONGHUA SHANG
College of Chemical Engineering, China University of Petroleum
FANG LIU
College of Chemical Engineering, China University of Petroleum
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