Organic fouling behavior in direct contact membrane distillation

Naidu, G; Jeong, S; Kim, SJ; Kim, IS; Vigneswaran, S

Organic fouling behavior in direct contact membrane distillation

Naidu, G

Jeong, S

Kim, SJ Kim, IS Vigneswaran, S

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Publication Type:: Journal Article
Citation:: Desalination, 2014, 347 pp. 230 - 239
Issue Date:: 2014-08-15

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Field	Value	Language
dc.contributor.author	Naidu, G https://orcid.org/0000-0002-6406-3444	en_US
dc.contributor.author	Jeong, S https://orcid.org/0000-0001-8995-3497	en_US
dc.contributor.author	Kim, SJ	en_US
dc.contributor.author	Kim, IS	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.date.issued	2014-08-15	en_US
dc.identifier.citation	Desalination, 2014, 347 pp. 230 - 239	en_US
dc.identifier.issn	0011-9164	en_US
dc.identifier.uri	http://hdl.handle.net/10453/33042
dc.description.abstract	Organic fouling development in a direct contact membrane distillation system was investigated with synthetic model solutions of humic acid (HA), alginate acid (AA) and bovine serum albumin (BSA). A 40-50% flux decline was observed, with BSA and HA showing dominant fouling tendencies, while minimal fouling was observed with AA due to its hydrophilic nature. Based on the feed characterization analysis using liquid chromatography-organic carbon detector, the HA feed solution showed thermal disaggregation to low molecular weight-HA (LMW-HA) organics with increased feed temperature (50. °C and 70. °C). The HA fouled membrane autopsy analysis showed the penetration of organics through the membrane pores. In comparison, the BSA feed solution showed more significant deposits on the membrane surface (35.2% higher carbon mass compared to HA foulant) with less significant pore penetration. The mixed organic (MO) feed solution consisting of BSA, HA and AA altogether showed evidence of foulant to foulant interaction. The MO feed solution leads to a significant flux decline of 65% only at a later stage upon the disaggregation of LMW-HA organics that adhered on the membrane. © 2014 Elsevier B.V.	en_US
dc.relation.ispartof	Desalination	en_US
dc.relation.isbasedon	10.1016/j.desal.2014.05.045	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Organic fouling behavior in direct contact membrane distillation	en_US
dc.type	Journal Article
utslib.citation.volume	347	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	090404 Membrane and Separation Technologies	en_US
utslib.for	090407 Process Control and Simulation	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	347	en_US

Abstract:

Organic fouling development in a direct contact membrane distillation system was investigated with synthetic model solutions of humic acid (HA), alginate acid (AA) and bovine serum albumin (BSA). A 40-50% flux decline was observed, with BSA and HA showing dominant fouling tendencies, while minimal fouling was observed with AA due to its hydrophilic nature. Based on the feed characterization analysis using liquid chromatography-organic carbon detector, the HA feed solution showed thermal disaggregation to low molecular weight-HA (LMW-HA) organics with increased feed temperature (50. °C and 70. °C). The HA fouled membrane autopsy analysis showed the penetration of organics through the membrane pores. In comparison, the BSA feed solution showed more significant deposits on the membrane surface (35.2% higher carbon mass compared to HA foulant) with less significant pore penetration. The mixed organic (MO) feed solution consisting of BSA, HA and AA altogether showed evidence of foulant to foulant interaction. The MO feed solution leads to a significant flux decline of 65% only at a later stage upon the disaggregation of LMW-HA organics that adhered on the membrane. © 2014 Elsevier B.V.

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http://hdl.handle.net/10453/33042