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循环水常用的几种主要杀菌剂的结构和杀菌效果 总被引:3,自引:0,他引:3
研究了5种工业常用的非氧化型杀菌剂的结构,并在实验室和工业循环水现场评价了7种工业常用杀菌剂对循环水中危害最大的异养菌、硫酸盐还原菌和铁细菌的杀菌效果。结果表明,非氧化型杀菌剂以季铵盐类和异噻唑啉酮类或它们的复合剂为主,杀菌效果较好,但与氧化型杀菌剂相比较,氧化型杀菌剂杀菌效果更好 相似文献
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QS—04杀菌剂是以大分子季胺盐、抗凝剂和渗透剂为主要组分的粘泥剥离杀菌剂。根据QS—04杀菌剂的小试、中试和工业试验的主要结果,从杀菌剥离机理和试验方面论述了QS—04杀菌剂的研制和应用情况。试验结果表明,QS—04杀菌剂具有良好的杀菌性能,在循环冷却水的粘泥剥离上有其优势,其药剂杀菌、粘泥剥离的综合效果与日本栗田公司A—496相当,适用于敞开式和密闭式循环水系统。 相似文献
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二氧化氯在油田注水系统中的应用 总被引:1,自引:0,他引:1
《石油天然气学报》2008,(3)
二氧化氯是一种氧化型杀菌剂,具有除硫反应速度快、除硫效果彻底,同时兼有杀菌性能等优点。根据其氧化能力,室内实验评价了除硫杀菌的效果,提出了"用二氧化氯先氧化,后沉降;先杀菌,后控制"的油田污水处理新思路。二氧化氯能清除因长期使用而引起的FeS、有机生物质和注水管线污垢等堵塞问题,由其配制的解堵剂解堵效果好,在油田注水开发中,具有良好的应用前景。 相似文献
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稳定性二氧化氯在石化企业循环水系统的应用 总被引:2,自引:0,他引:2
介绍了石化企业循环水系统使用的杀菌剂,对氯气和非氯气杀菌剂的优缺点进行了比较;结合工程实例,阐述了药剂的杀菌灭藻能力、技术经济及安全环保等方面的问题;建议用稳定性二氧化氯作为石化企业循环水处理的首选杀菌剂替代氧化性杀菌剂。 相似文献
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以油田杀菌剂的研制和开发为背景,以制备环境友好杀菌剂并研究其应用为目的,开发了新型油田杀菌剂,并对其性能进行评价.Fe(VI)化合物杀菌剂是以高铁酸盐 (K2FeO4)为主剂的一种氧化型杀菌剂,对各种细菌具有广泛的杀灭作用,可以杀灭油田水中硫酸盐还原菌、腐生菌、铁细菌等.在室内合成该杀菌剂,然后取K2FeO4固体粉末加2~6 mol/L KOH水溶液,配制成0.1%~1%碱性溶液,即为杀菌剂工作液;最后采用绝迹稀释法,测定加杀菌剂前后水样中硫酸盐还原菌、腐生菌和铁细菌的含量,计算杀菌率,评价杀菌效果,确定了杀菌剂在油田水杀菌过程中的使用条件,并从杀菌的角度初步验证了该杀菌剂对油田水中硫酸盐还原菌、铁细菌、腐生菌的杀菌功效. 相似文献
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以油田杀菌剂的研制和开发为背景,以制备环境友好杀菌剂并研究其应用为目的,开发了新型油田杀菌剂,并对其性能进行评价。Fe(Ⅵ)化合物杀菌剂是以高铁酸盐(K2FeO4)为主剂的一种氧化型杀菌剂,对各种细菌具有广泛的杀灭作用,可以杀灭油田水中硫酸盐还原菌、腐生菌、铁细菌等。在室内合成该杀菌剂,然后取K2FeO4固体粉末加2~6 mol/L KOH水溶液,配制成0.1%~1%碱性溶液,即为杀菌剂工作液;最后采用绝迹稀释法,测定加杀菌剂前后水样中硫酸盐还原菌、腐生菌和铁细菌的含量,计算杀菌率,评价杀菌效果,确定了杀菌剂在油田水杀菌过程中的使用条件,并从杀菌的角度初步验证了该杀菌剂对油田水中硫酸盐还原菌、铁细菌、腐生菌的杀菌功效。 相似文献
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硫酸盐还原菌杀菌剂的合成及机理探讨 总被引:6,自引:2,他引:4
介绍了两种双季铵盐类化合物(杀菌剂1号,2号)的合成路线,并对其合成条件进行了探索,在此基础上进行了硫酸盐还原菌(SRB)的杀菌性能试验和杀菌机理探讨。当药剂浓度为80~100mg/L时,合成的两种双季铵盐对SRB的杀菌性能均优于通常使用的十二烷基二甲基苄基氯化铵(1227),而且杀菌剂1号优于2号,这是由于两个季氮原子之间所连的基团结构不同所致。 相似文献
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F. R. Ismagilov L. A. Kokhanchikov T. S. Bogatyrev M. I. Denil’khanov 《Chemistry and Technology of Fuels and Oils》2011,47(1):1-6
The problem of utilizing sour associated gas and natural gas from small fields is examined. Creation of production of commercial
chemical products directly in the field, in particular, reagents against sulfate-reducing bacteria using hydrogen sulfide
as feedstock, is proposed as one direction for solving this problem. The results of testing “Advance” biocide, whose production
technology is based on the reaction of hydrogen sulfide contained in hydrocarbon gas with another feedstock petrochemical
component, are reported. According to the results of a wide series of industrial tests, this biocide is suitable for use in
the oil and gas sector. 相似文献
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《Food Control》2017
Pseudomonas aeruginosa biofilm confers resistance to antibiotics and biocides; therefore, it represents a problem to clinical and industrial settings. This bacterial organization is controlled by quorum sensing (QS), which depends of autoinducer molecules, e.g. acyl-homoserine-lactones that regulate production on virulence factors as pyocyanin. As a solution to this problem, carvacrol, present in most of the antibacterial essential oils could be a potential agent to inhibit QS for its ability to interact with cell membrane and protein receptors involved in biofilm formation. Therefore, this work evaluated the effect of carvacrol on pyocyanin production and biofilm formation of P. aeruginosa. Minimal inhibitory concentration (MIC) of carvacrol against planktonic P. aeruginosa was 7.9 mM; in addition, carvacrol was tested against Chromobacterium violaceum as model for anti-QS agents, showing a MIC of 0.7 mM. Lower concentrations of carvacrol to observed MICs were applied to observe changes in QS activity and biofilm production to avoid effect of cell death on mentioned parameters. Carvacrol inhibited P. aeruginosa biofilms (1.5–3 Log CFU/cm2) at 0.9–7.9 mM, compared to non-treated bacteria on stainless steel surface. Pyocyanin production by P. aeruginosa was reduced up to 60% at 3.9 mM of carvacrol. Higher doses of carvacrol affected P. aeruginosa viability. Similar results were obtained for violacein production that is related to QS of C. violaceum, where carvacrol reduced up to 50% at 0.7 mM without affecting cell viability. These results showed that the inhibition of QS could be related with reduction of bacterial virulence and biofilm formation on stainless steel surfaces exposed to carvacrol. 相似文献
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钮庭树 《精细石油化工进展》2006,7(2):30-33
以异丁酸、苯甲酸和新戊二醇等为主要原料,QS(无机锡复合盐)作催化剂,合成了增塑剂NPBIB(苯甲酸新戊二醇异丁酸酯),并对其性能进行了测试。考察了影响酯化反应的因素,实验结果表明,酯化反应的最佳条件为:催化剂QS用量(以反应液总质量计)为O.3%,异丁酸、苯甲酸、新戊二醇的摩尔比为1.1:1:1,反应时间为8h。在此优化条件下,酯化率可达99.5%。 相似文献
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丙烯歧化制乙烯和丁烯 总被引:1,自引:0,他引:1
报道了在wo_3-SiO_2催化剂上丙烯歧化制乙烯和丁烯的试验结果。在10毫升固定床常压试验、10毫升固定床加压试验以及1升固定床常压放大试验中,丙烯转化率分别为41.1%、41.7%、44.8%;乙烯收率分别为15.4%、16.1%、15.5%;丁烯收率分别为22.8%、24.1%、24.6%;总选择性分别为93.8%、96.4%、91.6%。 相似文献
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《Food Control》2014
Quorum sensing (QS) is an intercellular signaling and gene regulatory mechanism, which is implicated in bacterial pathogenicity and food spoilage. Therefore, blocking bacterial QS system may prevent QS-controlled phenotypes responsible for food spoilage. In the present study, we aimed to investigate the anti-biofilm and quorum sensing inhibitory potentials of Rosa rugosa tea polyphenol (RTP) extract, which is rich in polyphenols (87.52%) and flavonoids (61.03%). The RTP specifically inhibited QS-controlled violacein production in Chromobacterium violaceum 026 with 87.56% reduction without significantly affecting its growth. Moreover, RTP exhibited inhibition in swarming motility (84.90% and 78.03%) and biofilm formation (67.02% and 72.90%) of Escherichia coli K-12 and Pseudomonas aeruginosa PAO1 in a concentration-dependent manner, respectively. These findings strongly suggest that RTP potentially could be developed as a new QS inhibitor and/or anti-biofilm agent to enhance the shelf life and increase food safety. 相似文献