File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Effect of reverse solute diffusion on scaling in forward osmosis: A new control strategy by tailoring draw solution chemistry

TitleEffect of reverse solute diffusion on scaling in forward osmosis: A new control strategy by tailoring draw solution chemistry
Authors
Issue Date2017
Citation
Desalination, 2017, v. 401, p. 230-237 How to Cite?
AbstractWe explored the specific role of reverse solute diffusion (RSD) on the scaling in osmotically-driven membrane processes (particularly forward osmosis (FO)). Both scaling precursors (e.g., Ca2 + and phosphate) and anti-scaling precursors (e.g., H+ and a chelating agent ethylenediamine tetraacetic acid (EDTA)) were used to investigate the effect of RSD and draw solution chemistry on calcium phosphate scaling. While draw solutions containing Ca2 + tend to promote calcium phosphate scaling, this effect was noticeable only if the specific RSD of Ca2 + (i.e., the ratio of Ca2 + flux to water flux) was greater than the original Ca2 + concentration in the feed water. The RSD of H+ and EDTA effectively suppressed scaling. For the first time, we demonstrated a new scaling control strategy for FO by the inclusion of anti-scaling functions in the draw solution chemistry. Our work has important implications for the design and operation of FO processes.
Persistent Identifierhttp://hdl.handle.net/10722/247307
ISSN
2015 Impact Factor: 4.412
2015 SCImago Journal Rankings: 1.549

 

DC FieldValueLanguage
dc.contributor.authorZhang, M-
dc.contributor.authorShe, Q-
dc.contributor.authorYan, X-
dc.contributor.authorTang, C-
dc.date.accessioned2017-10-18T08:25:19Z-
dc.date.available2017-10-18T08:25:19Z-
dc.date.issued2017-
dc.identifier.citationDesalination, 2017, v. 401, p. 230-237-
dc.identifier.issn0011-9164-
dc.identifier.urihttp://hdl.handle.net/10722/247307-
dc.description.abstractWe explored the specific role of reverse solute diffusion (RSD) on the scaling in osmotically-driven membrane processes (particularly forward osmosis (FO)). Both scaling precursors (e.g., Ca2 + and phosphate) and anti-scaling precursors (e.g., H+ and a chelating agent ethylenediamine tetraacetic acid (EDTA)) were used to investigate the effect of RSD and draw solution chemistry on calcium phosphate scaling. While draw solutions containing Ca2 + tend to promote calcium phosphate scaling, this effect was noticeable only if the specific RSD of Ca2 + (i.e., the ratio of Ca2 + flux to water flux) was greater than the original Ca2 + concentration in the feed water. The RSD of H+ and EDTA effectively suppressed scaling. For the first time, we demonstrated a new scaling control strategy for FO by the inclusion of anti-scaling functions in the draw solution chemistry. Our work has important implications for the design and operation of FO processes.-
dc.languageeng-
dc.relation.ispartofDesalination-
dc.titleEffect of reverse solute diffusion on scaling in forward osmosis: A new control strategy by tailoring draw solution chemistry-
dc.typeArticle-
dc.identifier.emailTang, C: tangc@hku.hk-
dc.identifier.authorityTang, C=rp01765-
dc.identifier.doi10.1016/j.desal.2016.08.014-
dc.identifier.hkuros281281-
dc.identifier.volume401-
dc.identifier.spage230-
dc.identifier.epage237-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats