Quqing research group of Yunnan University has developed a double biological corrosion and scale inhibitor soluble EPS

Recently, Qu Qing, a professor of Yunnan University, took the soluble EPS of Bacillus cereus as the research goal to develop a high-efficient dual biological function corrosion and scale inhibitor Relevant research results were published in water research (DOI: 10.1016 / j.waters 2019.115094) under the title of "Bacillus cereus EPS a s a dual bio functional core and scale inhibitor in artistic seawater" Yunnan University is the only unit to complete the thesis Li Shunling, a doctoral student, is the first author Professor Qu Qing and Li Lei, associate researchers, are the co authors The shortage of water resources is a global problem, and the utilization of seawater resources is one of the effective mitigation measures Equipment corrosion and scaling are always inevitable problems in desalination process and seawater cooling system, which limits the utilization of seawater Corrosion and scaling not only reduce heat exchange efficiency and service life, but also aggravate water pollution Corrosion inhibitors are considered to be the most effective way to control scaling and material corrosion At present, phosphorus containing corrosion and scale inhibitors are the most popular in the world But most of them can not be biodegraded, which leads to serious water eutrophication and membrane system pollution, and the synthesis cost is high Therefore, the development of a green, efficient and cheap inhibitor is an urgent scientific problem Quqing research group developed a kind of double biological function corrosion and scale inhibitor soluble EPS with Bacillus cereus (probiotics) as raw material "production workshop" The soluble EPS has high scale inhibition and long-term corrosion resistance Its scale inhibition rate for CaCO3 is 87.60%, and the corrosion inhibition rate for stainless steel is 91.16% It can be seen that the soluble EPS has the potential of anti-corrosion and scale inhibition In this paper, a method based on soluble EPS induced biomineralization to inhibit corrosion and CaCO3 deposition of stainless steel was proposed for the first time This provides a new idea for the development of sustainable and environmental protection corrosion and scale inhibition materials It is worth mentioning that the soluble EPS is a kind of cheap, easy to extract and rich biological renewable resources, which has the characteristics of strong biodegradation, strong biosorption affinity, strong ability to exchange proton ions, and many fixed sites This work was supported by the National Natural Science Foundation of China (51661033, 51361028, 51161025 and 31660538) and the "Donglu scholar support program" of Yunnan University, which is another important progress after a series of high-quality scientific research achievements.