当前位置：
X-MOL 学术
›
Ind. Eng. Chem. Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Impact of Physical and Chemical Cleaning Agents on Specific Biofilm Components and the Implications for Membrane Biofouling Management
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-02-26 00:00:00 , DOI: 10.1021/acs.iecr.7b05156 Caroline Y. Kim 1 , Xiaobo Zhu 1 , Moshe Herzberg 2 , Sharon Walker 3 , David Jassby 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-02-26 00:00:00 , DOI: 10.1021/acs.iecr.7b05156 Caroline Y. Kim 1 , Xiaobo Zhu 1 , Moshe Herzberg 2 , Sharon Walker 3 , David Jassby 1
Affiliation
|
A homogeneous layer of a single biofilm component (polysaccharides, proteins, and nucleic acids) was studied on an ultrafiltration membrane and its interaction with different cleaning solutions (base, oxidizer, surfactant, and chelating agent) was evaluated by comparing permeate flux, with the base and oxidizer showing the best cleaning performance. The presence of calcium in the feed solution hindered the ability of the cleaning solutions to completely remove the foulants in the absence of a chelating agent. Backwashing the membranes fouled with polysaccharides and DNA resulted in full flux recovery but had little effect on recovering the flux of protein-fouled membranes. The efficacy of cleaning agents toward model biofilm component mixtures designed to mimic Gram-negative and Gram-positive bacterial biofilms were tested. Flux recovery was enhanced by the usage of a base and oxidizer. However, full recovery was never achieved using chemical cleaning agents. It was determined that the presence of proteins in biofilms determines their susceptibility to cleaning.
中文翻译：
物理和化学清洁剂对特定生物膜成分的影响及其对膜生物污染管理的意义
在超滤膜上研究了单一生物膜成分（多糖，蛋白质和核酸）的均质层，并通过将渗透通量与碱和氧化剂表现出最佳的清洁性能。进料溶液中钙的存在阻碍了清洁溶液在不存在螯合剂的情况下完全清除污垢的能力。反洗被多糖和DNA污染的膜可完全回收通量，但对回收蛋白污染膜的通量几乎没有影响。测试了清洁剂对设计用于模拟革兰氏阴性和革兰氏阳性细菌生物膜的模型生物膜成分混合物的功效。通过使用碱和氧化剂可提高通量回收率。但是，使用化学清洁剂从未实现完全恢复。已确定生物膜中蛋白质的存在决定了其对清洁的敏感性。
更新日期：2018-02-27
中文翻译：
物理和化学清洁剂对特定生物膜成分的影响及其对膜生物污染管理的意义
在超滤膜上研究了单一生物膜成分（多糖，蛋白质和核酸）的均质层，并通过将渗透通量与碱和氧化剂表现出最佳的清洁性能。进料溶液中钙的存在阻碍了清洁溶液在不存在螯合剂的情况下完全清除污垢的能力。反洗被多糖和DNA污染的膜可完全回收通量，但对回收蛋白污染膜的通量几乎没有影响。测试了清洁剂对设计用于模拟革兰氏阴性和革兰氏阳性细菌生物膜的模型生物膜成分混合物的功效。通过使用碱和氧化剂可提高通量回收率。但是，使用化学清洁剂从未实现完全恢复。已确定生物膜中蛋白质的存在决定了其对清洁的敏感性。
京公网安备 11010802027423号