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| Pollution behavior of soluble microbial products on GO/PVDF hybrid membrane |
| ZHU Zhen-ya1,2, BAI Cheng-ling1, WANG Lei1, WANG Xu-dong1 |
1. Research Institute of Membrane Separation Technology of Shaanxi Province, Key Laboratory of Membrane Separation of Shaanxi Province, Shaanxi Key Laboratory of Environment Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, School of Water Resources and Environment, Hebei GEO University, Shijiazhuang 050031, China |
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Abstract In order to analyze the fouling characteristics of soluble microbial products (SMP) on GO/PVDF hybrid membrane, macro-fouling experiments were carried out, and the adsorption of SMP on the self-made coated chip and the structure change of the fouling layer were analyzed from the microscopic levels by the dissipative quartz microcrystalline balance (QCM-D). The results showed that membrane (GO=0.5wt%) had the highest pollution recovery rate (79.95%) with the strongest anti-fouling ability. QCM-D experiments showed that the adsorption capacity of SMP on the surface of membrane (GO=0wt%) coated chip was the largest and the fouling was serious. The stronger the hydrophilicity of membrane led to the smaller the change of adsorption frequency and the stronger the anti-fouling ability of membrane. Otherwise, it was also found that membrane (GO=0.5wt%) coated chips had loose and soft contaminant structures, and the surface of other membranes were hard and dense.
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Received: 02 December 2018
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