title: Novel indicators for thermodynamic prediction of interfacial interactions related with adhesive fouling in a membrane bioreactor.
abstract: This study focused on developing indicators to predict adhesive membrane fouling in a membrane bioreactor (MBR). Thermodynamic interactions between membrane surface and foulants in various interaction scenes were comprehensively evaluated. It was revealed that, the total interaction energy in contact could be considered as a critical value affecting adhesion of foulants. Surface hydrophilicity cannot be simply represented by water contact angle. Statistical analysis showed that membrane acid-based (AB) surface tension, Lifshitz-Van der waals (LW) surface tension, total tension, zeta potential and water contact angle had no apparent correlation with adhesive fouling, suggesting the infeasibility of these parameters as fouling predictors. It was found that, interaction between two identical membrane surface in water (ΔGsws) and membrane surface electron donor tension (γ-) strongly correlated with adhesive fouling, and could be reliable indicators to predict adhesive fouling. This study identified the relationships of series membrane surface properties with adhesive fouling in MBRs.
authors: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, PR China; Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, PR China.
authors: Leihong
authors: L
authors: Zhao
authors: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, PR China.
authors: Fangyuan
authors: F
authors: Wang
authors: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, PR China.
authors: Xuexiang
authors: X
authors: Weng
authors: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, PR China.
authors: Renjie
authors: R
authors: Li
authors: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, PR China.
authors: Xiaoling
authors: X
authors: Zhou
authors: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, PR China. Electronic address: hjlin@zjnu.cn.
authors: Hongjun
authors: H
authors: Lin
authors: College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, PR China.
authors: Haiying
authors: H
authors: Yu
authors: Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada.
authors: Bao-Qiang
authors: BQ
authors: Liao
keywords: Hydrophilicity; Membrane bioreactor; Membrane fouling; Thermodynamic interaction