Predation influences the structure of biofilm developed on ultrafiltration membranes.
作者： Nicolas Derlon , Maryna Peter-Varbanets , Andreas Scheidegger , Wouter Pronk , Eberhard Morgenroth
DOI: 10.1016/J.WATRES.2012.03.031
关键词: Permeation 、 Filtration 、 Predation 、 Microbial population biology 、 Biophysics 、 Biofilm 、 Membrane 、 Tetrahymena pyriformis 、 Ultrafiltration 、 Botany 、 Biology
摘要: Abstract This study investigates the impact of predation by eukaryotes on development specific biofilm structures in gravity-driven dead-end ultrafiltration systems. Filtration systems were operated under ultra-low pressure conditions (65 mbar) without control formation. Three different levels evaluated: (1) inhibition eukaryotic organisms, (2) addition cultured protozoa ( Tetrahymena pyriformis ), and (3) no modification microbial community as a control. The system performance was evaluated based permeate flux biofilm. It found that had significant influence both total amount also structure An open heterogeneous developed with whereas flat, compact, thick homogeneously covered membrane surface absence predation. Permeate correlated increased fluxes for smaller coverage. presence or predators 10 5 L m −2 h −1 , respectively. concluded is key factor influencing
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