Membrane fouling in a submerged membrane bioreactor: New method and its applications in interfacial interaction quantification. (October 2017)

• Record Type: Journal Article
• Authors: Hong, Huachang; Cai, Xiang; Shen, Liguo; Li, Renjie; Lin, Hongjun
• Is Part Of: Bioresource technology. Volume 241(2017)
• Page Start: 406
• Page End: 414
• Publication Date: 2017-10
• Subjects: Membrane bioreactor -- Membrane fouling -- Interfacial interaction -- Rough surface; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2017.05.096
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Regularly rough membrane and rough particle surfaces were constructed. A new method to quantify interactions between two rough surfaces was proposed. Effects of rough surface topography on interfacial interaction were investigated. The new method had broad application fields including guiding surface design. Abstract: Quantification of interfacial interactions between two rough surfaces represents one of the most pressing requirements for membrane fouling prediction and control in membrane bioreactors (MBRs). This study firstly constructed regularly rough membrane and particle surfaces by using rigorous mathematical equations. Thereafter, a new method involving surface element integration (SEI) method, differential geometry and composite Simpson's rule was proposed to quantify the interfacial interactions between the two constructed rough surfaces. This new method were then applied to investigate interfacial interactions in a MBR with the data of surface properties of membrane and foulants experimentally measured. The feasibility of the new method was verified. It was found that asperity amplitude and period of the membrane surface exerted profound effects on the total interaction. The new method had broad potential application fields especially including guiding membrane surface design for membrane fouling mitigation.