Microbial community analysis of fouled reverse osmosis membranes used in water recycling
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Environmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Permanent link to this recordhttp://hdl.handle.net/10754/562792
MetadataShow full item record
AbstractBiofouling on RO membranes has major cost implications in water reclamation. In this study membranes and water samples were collected from a RO pilot-plant operated on two sites to study the differences in microbial communities in order to develop a better understanding of the biofouling. For the two sites studied, the examination of the front membrane of the first stage and the tail membrane of the second stage of the RO train using 16S rRNA gene-based molecular technique showed that bacteria were similar on both stages and no significant effect of the membrane location within the RO train on the biofilm development could be discerned. However, the comparison of the identified bacteria from membrane samples between the two sites showed that each site is specific, leading to a different composition of microbial communities. The different nutrient concentrations in the RO feed water due to the different biological pre-treatments are one potential explanation for the observed differences in the microbial communities. Seasonal variations also play a major role in the development of microbial communities as shown by the significant differences observed between the communities measured in the samples in winter and summer on the second site. The results did not show similarity between the species identified on the RO membranes and in the feed water. Hence, the relationship of microbial community between the water generated during the pre-treatment process and RO membranes is not obvious. From this study, results showed that there is an actual need to investigate the development of microbial communities on membrane surface in real conditions in order to suggest tailored solutions for biofouling control and removal. © 2013 Elsevier Ltd.
SponsorsThe authors want to acknowledge Veolia Environnement Research & Innovation and Seqwater for funding received through the joint "Water Recycling Research Program" with The University of Queensland as well as the Australian Government Department of Industry, Innovation, Science, Research and Tertiary Education for funding obtained through the FAST program (FR10025). The authors also would like to acknowledge Unitywater and Allconnex Water for their support by hosting the pilot-trials.
- Biofouling of reverse-osmosis membranes during tertiary wastewater desalination: microbial community composition.
- Authors: Al Ashhab A, Herzberg M, Gillor O
- Issue date: 2014 Mar 1
- Bacterial growth through microfiltration membranes and NOM characteristics in an MF-RO integrated membrane system: Lab-scale and full-scale studies.
- Authors: Park JW, Lee YJ, Meyer AS, Douterelo I, Maeng SK
- Issue date: 2018 Nov 1
- Effect of membrane bioreactor solids retention time on reverse osmosis membrane fouling for wastewater reuse.
- Authors: Farias EL, Howe KJ, Thomson BM
- Issue date: 2014 Feb 1
- Biological support media influence the bacterial biofouling community in reverse osmosis water reclamation demonstration plants.
- Authors: Ferrera I, Mas J, Taberna E, Sanz J, Sánchez O
- Issue date: 2015
- Characterization of biofouling in a lab-scale forward osmosis membrane bioreactor (FOMBR).
- Authors: Zhang Q, Jie YW, Loong WL, Zhang J, Fane AG, Kjelleberg S, Rice SA, McDougald D
- Issue date: 2014 Jul 1