Assessment of silt density index (SDI) as fouling propensity parameter in reverse osmosis (RO) desalination systems

Handle URI:
http://hdl.handle.net/10754/562584
Title:
Assessment of silt density index (SDI) as fouling propensity parameter in reverse osmosis (RO) desalination systems
Authors:
Rachman, Rinaldi; Ghaffour, Noreddine ( 0000-0003-2095-4736 ) ; Wali, F.; Amy, Gary L.
Abstract:
Due to its simplicity, silt density index (SDI) is extensively used in reverse osmosis systems despite its limitations in predicting membrane fouling. Employing a reliable fouling index with good reproducibility and precision is necessary. The aim of this investigation is to assess the reliability of SDI in order to understand the reasons for the low level of precision and accuracy. Different commercial SDI membranes and feed water quality were used in this study. Results showed the existence of membrane properties' variation within manufacturers, which then causes a lack of accuracy in fouling risk estimation. The nature of particles during SDI filtration provides information that particle concentration and size play a significant role in SDI quantification with substantial representation given by particles with size close to membrane nominal pore size. Moreover, turbidity-assisted SDI measurements along with determination of ultrafiltration permeate and clean water fouling potential, establish the indication of nonfouling-related phenomena involved on SDI measurement such as natural organic matter adsorption and hydrodynamic conditions that alters during filtration. Additionally, it was found that the latter affects the sensitivity of SDI by being represented by some portions of SDI values. © 2013 Desalination Publications.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination & Reuse Research Cntr; Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
Taylor & Francis
Journal:
Desalination and Water Treatment
Issue Date:
Jan-2013
DOI:
10.1080/19443994.2012.699448
Type:
Article
ISSN:
19443994
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorRachman, Rinaldien
dc.contributor.authorGhaffour, Noreddineen
dc.contributor.authorWali, F.en
dc.contributor.authorAmy, Gary L.en
dc.date.accessioned2015-08-03T10:43:43Zen
dc.date.available2015-08-03T10:43:43Zen
dc.date.issued2013-01en
dc.identifier.issn19443994en
dc.identifier.doi10.1080/19443994.2012.699448en
dc.identifier.urihttp://hdl.handle.net/10754/562584en
dc.description.abstractDue to its simplicity, silt density index (SDI) is extensively used in reverse osmosis systems despite its limitations in predicting membrane fouling. Employing a reliable fouling index with good reproducibility and precision is necessary. The aim of this investigation is to assess the reliability of SDI in order to understand the reasons for the low level of precision and accuracy. Different commercial SDI membranes and feed water quality were used in this study. Results showed the existence of membrane properties' variation within manufacturers, which then causes a lack of accuracy in fouling risk estimation. The nature of particles during SDI filtration provides information that particle concentration and size play a significant role in SDI quantification with substantial representation given by particles with size close to membrane nominal pore size. Moreover, turbidity-assisted SDI measurements along with determination of ultrafiltration permeate and clean water fouling potential, establish the indication of nonfouling-related phenomena involved on SDI measurement such as natural organic matter adsorption and hydrodynamic conditions that alters during filtration. Additionally, it was found that the latter affects the sensitivity of SDI by being represented by some portions of SDI values. © 2013 Desalination Publications.en
dc.publisherTaylor & Francisen
dc.subjectAssessment of sdien
dc.subjectFouling indicesen
dc.subjectParticulate foulingen
dc.subjectRo membrane fouling predictionen
dc.subjectSdi membrane characterizationen
dc.titleAssessment of silt density index (SDI) as fouling propensity parameter in reverse osmosis (RO) desalination systemsen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalDesalination and Water Treatmenten
kaust.authorRachman, Rinaldien
kaust.authorGhaffour, Noreddineen
kaust.authorAmy, Gary L.en
kaust.authorWali, F.en
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