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dc.contributor.authorNaidu, Gayathri
dc.contributor.authorJeong, Sanghyun
dc.contributor.authorChoi, Youngkwon
dc.contributor.authorVigneswaran, Saravanamuthu
dc.date.accessioned2016-11-29T08:47:43Z
dc.date.available2016-11-29T08:47:43Z
dc.date.issued2016-11-29
dc.identifier.citationNaidu G, Jeong S, Choi Y, Vigneswaran S (2016) Membrane distillation for wastewater reverse osmosis concentrate treatment with water reuse potential. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2016.11.068.
dc.identifier.issn0376-7388
dc.identifier.doi10.1016/j.memsci.2016.11.068
dc.identifier.urihttp://hdl.handle.net/10754/621893
dc.description.abstractMembrane distillation (MD) was evaluated as a treatment option of wastewater reverse osmosis concentrate (WWROC) discharged from wastewater reclamation plants (WRPs). A direct contact MD (DCMD), at obtaining 85% water recovery of WWROC showed only 13–15% flux decline and produced good quality permeate (10–15 µS/cm, 99% ion rejection) at moderate feed temperature of 55 °C. Prevalent calcium carbonate (CaCO3) deposition on the MD membrane occurred in treating WWROC at elevated concentrations. The combination of low salinity and loose CaCO3 adhesion on the membrane did not significantly contribute to DCMD flux decline. Meanwhile, high organic content in WWROC (58–60 mg/L) resulted in a significant membrane hydrophobicity reduction (70% lower water contact angle than virgin membrane) attributed to low molecular weight organic adhesion onto the MD membrane. Granular activated carbon (GAC) pretreatment helped in reducing organic contents of WWROC by 46–50%, and adsorbed a range of hydrophobic and hydrophilic micropollutants. This ensured high quality water production by MD (micropollutants-free) and enhanced its reuse potential. The MD concentrated WWROC was suitable for selective ion precipitation, promising a near zero liquid discharge in WRPs.
dc.description.sponsorshipThis study was funded by the Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE) (Sustainable process for treatment of WWROC to achieve near zero liquid discharge). We acknowledge Sydney Olympic Park Authority (Dr. Andrzej Listowski) (WWROC sampling) and the team at University of New South Wales (Dr. James McDonald) (provision of HPLC analytical support).
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0376738816310031
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, 29 November 2016. DOI: 10.1016/j.memsci.2016.11.068
dc.subjectDirect contact membrane distillation
dc.subjectmicropollutants
dc.subjectorganic fouling
dc.subjectpretreatment
dc.subjectreverse osmosis concentrate
dc.subjectwastewater reclamation
dc.titleMembrane distillation for wastewater reverse osmosis concentrate treatment with water reuse potential
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalJournal of Membrane Science
dc.eprint.versionPost-print
dc.contributor.institutionFaculty of Engineering, University of Technology Sydney (US, P.O. Box 123, Broadway, NSW2007, Australia
kaust.personJeong, Sanghyun


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