微生物胞外聚合物(EPS)对金属耐蚀性的影响
Effect of Extracellular Polymeric Substances (EPS) on Anti-corrosion Behavior of Metals
摘 要
微生物胞外聚合物(EPS)对金属腐蚀具有抑制作用，研究了EPS中的主要成分蛋白质和多糖对碳钢、铸铁、黄铜和304不锈钢腐蚀速率的影响，并以此为基础，开展了蛋白质、多糖抑制碳钢腐蚀的单因素试验以及正交试验。结果表明: 单因素作用下，蛋白质或多糖的质量浓度为1.0 mg/mL时，碳钢的腐蚀速率最低；多因素作用下，多糖加入量为0.7 mg/mL、蛋白质加入量为0.7mg/mL、浸涂时间为36 h时，碳钢的腐蚀抑制效果最佳。研究结果可以为金属防护领域研发新型防腐蚀涂料提供技术支持。
蛋白质
多糖
碳钢
腐蚀抑制
extracellular polymeric substances (EPS)
protein
polysaccharide
carbon steel
corrosion inhibition
Abstract
EPS can inhibit the corrosion of metals. The effects of protein and polysaccharide, the main components of EPS, on corrosion rates of carbon steel, cast iron, brass and 304 stainless steel were investigated. Single factor test and orthogonal test were used to investigate the corrosion resistance behavior of protein and polysaccharide. The results showed that under the condition of single factor, carbon steel had the lowest corrosion rate when the concentration of protein or polysaccharide was 1.0 mg/mL. And under orthogoral conditions, the best inhibition effect was obtained when polysaccharide was 0.7 mg/mL, protein was 0.7 mg/mL and dip-coating time was 36 h. The results could provide technical support for new anticorrosive coating investigating.
中图分类号 TG174.4 DOI 10.11973/fsyfh-201605008
所属栏目 试验研究
基金项目 国家自然科学基金(51278026, 51578035); 北京建筑大学基金项目(00331615008); 城市雨水系统与水环境省部共建教育重点实验室项目(PXM2014014210000057)
收稿日期 2015/7/23
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备注张雅君(1965-),教授,博士,从事再生水管网腐蚀及控制研究,
引用该论文: XU Ping,SI Shuai,ZHANG Ya-jun,ZHAI Yu-jia,WEI Zhi-gang. Effect of Extracellular Polymeric Substances (EPS) on Anti-corrosion Behavior of Metals[J]. Corrosion & Protection, 2016, 37(5): 384
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【13】DONG Z H,LIU T,LIU H F. Influence of EPS isolated from thermophilic sulphate-reducing bacteria on carbon steel corrosion[J]. Biofouling the Journal of Bioadhesion & Biofilm Research,2011,27(5): 487-495.
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【15】JUZELIUNAS E，RAMANAUSKAS R． Influence of wild strain bacillus mycoides on metals: from corrosion acceleration to environmentally friendly protection[J]． Electrochimi Acta，2006(51): 6085-6090.
【16】STADLER R,FUERBETH W,HARNEI T. First evaluation of the applicability of microbial extracellular polymeric substances for corrosion protection of metal substrates[J]. Electrochim Acta,2008(54): 91-99.
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