杀生物剂
腐蚀
壳聚糖
生物膜
硫酸盐还原菌
碳钢
材料科学
化学工程
碳纤维
硫酸盐
细菌
化学
冶金
复合材料
有机化学
工程类
复合数
生物
遗传学
作者
P. Abdul Rasheed,Ravi P. Pandey,Khadeeja Abdul Jabbar,Ayman Samara,Aboubakr M. Abdullah,Khaled A. Mahmoud
出处
期刊:Materials
[MDPI AG]
日期:2020-05-29
卷期号:13 (11): 2484-2484
被引量:10
摘要
In this work, uniform cross-linked chitosan/lignosulfonate (CS/LS) nanospheres with an average diameter of 150-200 nm have been successfully used as a novel, environmentally friendly biocide for the inhibition of mixed sulfate-reducing bacteria (SRB) culture, thereby controlling microbiologically influenced corrosion (MIC) on carbon steel. It was found that 500 µg·mL-1 of the CS/LS nanospheres can be used efficiently for the inhibition of SRB-induced corrosion up to a maximum of 85% indicated by a two fold increase of charge transfer resistance (Rct) on the carbon steel coupons. The hydrophilic surface of CS/LS can readily bind to the negatively charged bacterial surfaces and thereby leads to the inactivation or damage of bacterial cells. In addition, the film formation ability of chitosan on the coupon surface may have formed a protective layer to prevent the biofilm formation by hindering the initial bacterial attachment, thus leading to the reduction of corrosion.
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