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
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.
Wei Y, Zhang Y S, Gao X L, et al. Multilayered grapheme oxide membranes for water treatment:A review[J]. Carbon, 2018,139:964-981.
[2]
Sun Meng, Li J. Graphene oxide membranes:Functional structures, preparation and enbironmental applications[J]. Nano Today, 2018,20:121-137.
[3]
Wang Z, Yu H, Xia J, et al. Novel GO-blended PVDF ultrafiltration membranes[J]. Desalination, 2012,299(8):50-54.
[4]
李彬,王志伟,安莹,等.膜-生物反应器处理高盐废水膜面污染物特性研究[J]. 环境科学, 2014,35(2):643-650. Li B, Wang Z W, An Y, et al, Membrane surface fouling properties in MBRs for high-salinity wastewater treatment[J]. Environmental Science, 2012,299(8):50-54.
[5]
Zhang J, Wang Q Y, Wang Z W, et al. Modification of poly(vinylidene fluoride)/polyethersulfone blend membrane with polyvinylalcohol for improving antifouling ability[J]. Journal of Membrane Science, 2014,466(18):293-301.
[6]
Marcano D C, Kosynkin D V, Berlin J M, et al. Improved synthesis of graphene oxide[J]. Acs Nano, 2010,4(8):4806-4814.
[7]
Kiran S A, Thuyavan Y L, Arthanareeswaran G, et al. Impact of graphene oxide embedded polyethersulfone membranes for the effective treatment of distillery effluent[J]. Chemical Engineering Journal, 2016,286:528-537.
[8]
姜家良,王磊,黄丹曦,等.QCM-D与AFM联用解析EfOM在SiO2改性PVDF超滤膜表面的吸附机制[J]. 环境科学, 2016,37(12):4712-4719. Jiang J L, Wang L, Huang D X, et al. Adsorption mechanisms analysis of EfOM on PVDF ultrafiltration membranes modified by SiO2 using QCM-D and AFM[J]. Environmental Science, 2016,37(12):4712-4719.
[9]
Wang Z H, Yu H R, Xia J F, et al. Novel GO-blended PVDF ultrafiltration membranes[J]. Desalination, 2012,299:50-54.
[10]
Chen X F, Wang X P, Xu X M. Effective contact angle for rough boundary[J]. Physica D:Nonlinear Phenomena, 2013,242(1):54-64.
[11]
Zhang J, Wang Q Y, Wang Z W, et al. Modification of poly (vinylidene fluoride)/polyethersulfone blend membrane with polyvinyl alcohol for improving antifouling ability[J]. Journal of Membrane Science, 2014, 466:293-301.
[12]
Miao R, Wang L, Mi N, et al. Enhancement and mitigation mechanisms of protein fouling of ultrafiltration membranes under different lonic strengths, Environmental Science Technology, 2015,49:6574-6580.
[13]
Zhang J G, Xu Z W, Shan M J, et al. Synergetic effects of oxidized carbon nanotubes and grapheme oxide on fouling control and anti-fouling mechanism of polyvinylidene fluoride ultrafiltration membranes[J]. Journal of Membrance Science, 2013,448(24):81-92.
[14]
Chang X J, Bouchard D C. Multiwalled carbon nanotube deposition on model environmental surfaces[J]. Environmental Science & Technology, 2014,47(18):10372-10380.
[15]
McCubbin G A, Praporski S, Piantavigna S, et al. QCM-D finger printing of membrane-active peptides[J]. European Biophysics Journal, 2011,40(4):437-446.
