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Disinfection Of Reverse Osmosis Water By Atmospheric Plasma Rich In Oh Radical

机译:富含OH的大气等离子体对反渗透水的消毒作用。

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. The aim of this work is to evaluate the efficiency of different atmospheric plasma jet on the disinfection of reverse osmosis water contaminated with standard strains ATCC (American Type Culture Collection) of Escherichia coli(10798), Proteus Mirabilis(35659) and Klebsiella pneumoniae(31488). In the methodology, were prepared bacterial inoculums with reverse osmosis water on the 0.5 of Mac Farland scale. The samples were divided into three groups: (A) control; (B) treated with 5L / min plasma of Argon and water vapor; (C) treated with 5L / min plasma of Argon and hydrogen peroxide. Treatments were performed in triplicate for 10 minutes and at a distance of 1 cm between the nozzle and the liquid surface. A gliding arc discharge reactor was used to generate the plasma jet. For the analysis of the plasma, we used the optical emission spectroscopy (OES) technique, in order to characterize its chemistry. The two plasma compositions used were efficient in the disinfection of the reverse osmosis water contaminated with the different microorganisms, reaching 99.9% reduction of CFU / mL. OES spectra show an increase of 2 orders of magnitude in the OH intensity.
机译:。这项工作的目的是评估不同大气等离子流对被大肠杆菌(10798),变形杆菌(35659)和肺炎克雷伯菌(31488)的标准菌株ATCC(美国典型培养物保藏所)污染的反渗透水的消毒效率。 )。在该方法中,用Mac Farland规模的0.5的反渗透水制备了细菌接种物。将样品分为三组:(A)对照; (b)用5L / min的氩气和水蒸气等离子处理; (三)用5L / min的氩和过氧化氢血浆处理。在喷嘴和液体表面之间的距离为1 cm的地方,一式三份地进行处理10分钟。使用滑动电弧放电反应器产生等离子体射流。对于等离子体的分析,我们使用了光学发射光谱(OES)技术来表征其化学性质。所用的两种血浆组合物可有效消毒被不同微生物污染的反渗透水,CFU / mL降低了99.9%。 OES光谱显示OH强度增加了2个数量级。

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