2017
DOI: 10.1016/j.watres.2016.10.082
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Silica scaling in forward osmosis: From solution to membrane interface

Abstract: 14Membrane silica scaling hinders sustainable water production. Understanding silica 15 scaling mechanisms provides options for better membrane process management. In this study, 16we elucidated silica scaling mechanisms on an asymmetric cellulose triacetate (CTA) membrane 17 and polyamide thin-film composite (TFC) membrane. Scaling filtration showed that TFC 18 membrane was subjected to more severe water flux decline in comparison with the CTA 19 membrane, together with different scaling layer morphology. To … Show more

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Cited by 53 publications
(36 citation statements)
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“…Organic fouling is due to the deposition of colloidal particles and organic matters such as polysaccharides (Gu, Wang, Wei, & Tang, 2013;Gryta, 2008), humic acid (Linares et al, 2012;Khayet, Velázquez, & Mengual, 2004), and proteins (Gu et al, 2013;Cheng, Han, Hwang, Ho, & Cooper, 2010). Inorganic fouling is caused by the deposition of inorganic colloidal particles and particulates and/or crystallization or precipitation of hard mineral salts from the feed such as calcium carbonate (Li et al, 2015;Curcio et al, 2010) and silicate (Xie, & Gray, 2017;Karakulski, & Gryta, 2005). And biological fouling is caused mainly by microorganisms such as bacteria (Yoon, Baek, Yu, & Yoon, 2013;Gryta, 2002), fungi (Gryta, 2002), and algae (Zou et al, 2013).…”
Section: Difference In Fouling Behavior Between Fo and MDmentioning
confidence: 99%
“…Organic fouling is due to the deposition of colloidal particles and organic matters such as polysaccharides (Gu, Wang, Wei, & Tang, 2013;Gryta, 2008), humic acid (Linares et al, 2012;Khayet, Velázquez, & Mengual, 2004), and proteins (Gu et al, 2013;Cheng, Han, Hwang, Ho, & Cooper, 2010). Inorganic fouling is caused by the deposition of inorganic colloidal particles and particulates and/or crystallization or precipitation of hard mineral salts from the feed such as calcium carbonate (Li et al, 2015;Curcio et al, 2010) and silicate (Xie, & Gray, 2017;Karakulski, & Gryta, 2005). And biological fouling is caused mainly by microorganisms such as bacteria (Yoon, Baek, Yu, & Yoon, 2013;Gryta, 2002), fungi (Gryta, 2002), and algae (Zou et al, 2013).…”
Section: Difference In Fouling Behavior Between Fo and MDmentioning
confidence: 99%
“…When the concentration of these salts in the feed exceeds their solubility at higher water recovery rates, precipitation may occur near or on the membrane surface, leading to scaling of the membrane surface and flux decline [44,45]. Amongst the various scaling compounds reported in the literature are silica, calcium carbonate, gypsum and calcium sulphate [45][46][47][48][49][50].…”
Section: Inorganic Scalingmentioning
confidence: 99%
“…Several studies have investigated silica scaling in forward osmosis [45,46]; but literature on silica scaling and cleaning behaviour is rather limited [27]. Mi and Elimelech [45] investigated silica scaling and cleaning behaviour in forward osmosis.…”
Section: Inorganic Scalingmentioning
confidence: 99%
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