Application And Synthesis Of Environmental Friendly Bactericide BBAB

With the rapid development of social economy and chemical industries, water shortage has became a global problem. Recycling of cooling water was an important way to solve the industrial water consumption, but rapid propagation of microbiological in circulating water system caused many severe damage. The auto-adding of chemical bactericides was the main method to control the growth of microorganisms in cooling system. Bromine-based bactericide became an important trend because of its broad-spectrum, efficient, environmentally friendly.In this paper, efficient and environmentally friendly bactericide1,4-bis(bromoacetoxy)-2-butene (BBAB) was prepared by bromoacetic acid and2-butene-1,4-diol. HPLC, FT-IR,’HNMR were used to characterize BBAB products; The effects of catalyst, molar ratio of reactants, reaction temperature and reaction time on the synthesis process were also discussed. The optimum conditions for BBAB synthesis were as follows:used stannous chloride as the catalyst, molar ratio of bromoacetic acid and2-butene-1,4-diol was2.2:1, the reaction temperature was160℃and reacted3hours, yield up to83%.The water samples were collected from circulating cooling water system of a synthetic ammonia factory to validate laboratorial antibacterial activity of BBAB. The result shows that BBAB has a high level of antibacterial activity, antibacterial rate reached98.5%at the concentration of10ppm in1hour, that means a highly effective antimicrobial agent with broad application prospects.Meanwhile, the water samples were used to test and compare the antibacterial activity of BBAB、2,2-dibromo-3-nitrilopropionamide (DBNPA) and C102. The order is:BBAB> DBNPA> C102. Meanwhile, synergistic antibacterial activity of BBAB with DBNPA or CIO2was tested. The result shows that BBAB and DBNPA have significant synergistic antibacterial trend, antibacterial rate over99%at the concentration of10ppm.