Forward osmosis as a pre-treatment for treating coal seam gas associated water: Flux and fouling behaviours

Chun, Youngpil, Kim, Sung-jo, Millar, Graeme, Mulcahy, Dennis, Kim, In S., & Zou, Linda (2016) Forward osmosis as a pre-treatment for treating coal seam gas associated water: Flux and fouling behaviours. Desalination. (In Press)

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In this study, a bench scale forward osmosis (FO) process was operated using two commonly available FO membranes in different orientations in order to examine the removal of foulants in the coal seam gas (CSG) associated water, the water flux and fouling behaviours of the process were also investigated. After 48 h of fouling simulation experiment, the water flux declined by approximately 55 and 35% of its initial level in the TFC-PRO and CTA-PRO modes (support layer facing the feed), respectively, while the flux decline in the TFC-FO and CTA-FO modes (active layer facing the feed) was insignificant. The flux decline in PRO modes was caused by the compounding effects of internal concentration polarisation and membrane fouling. However, the declined flux was completely recovered to its initial level following the hydraulic cleaning using deionised water. Dissolved organic carbon (DOC), adenosine tri-phosphate (ATP) and major inorganic scalants (Ca, Mg and silica) in the CSG feed were effectively removed by using the FO process. The results of this study suggest that the FO process shows promising potential to be employed as an effective pre-treatment for membrane purification of CSG associated water.

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ID Code: 92295
Item Type: Journal Article
Refereed: Yes
Keywords: coal seam gas, forward osmosis, flux behaviour, foulant rejection, pre-treatment
DOI: 10.1016/j.desal.2015.09.012
ISSN: 0011-9164
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CHEMICAL ENGINEERING (090400) > Water Treatment Processes (090410)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 Elsevier
Copyright Statement: Licensed under the Creative Commons Attribution; Non-Commercial; No-Derivatives 4.0 International. DOI: 10.1016/j.desal.2015.09.012
Deposited On: 27 Jan 2016 00:51
Last Modified: 31 Jan 2016 05:37

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