Chemistry and product quality of an NH3–CO2 forward osmosis desalination system

This study examined the chemistry of a forward osmosis (FO) desalination system, which employs ammonium bicarbonate as the draw solute. The Indophenol blue photometric technique and a total carbon analyzer were used to determine the ammonia concentration and carbonate species concentration, respecti...

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Bibliographic Details
Published in:Desalination and water treatment 2015-06, Vol.55 (2), p.331-338
Main Authors: Moon, Ali Shoeb, Kim, Young, Lee, Jong Hoon, Lee, Kong Hoon, Kim, Yu Chang, Park, Sang-Jin, Lee, Moonyong
Format: Article
Language:English
Subjects:
Ammonia
Ammonium
Carbon dioxide
Concentration measurement
Desalination
Draw solution
Drinking water
Forward osmosis
Osmosis
Water supply
Water treatment
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Summary:This study examined the chemistry of a forward osmosis (FO) desalination system, which employs ammonium bicarbonate as the draw solute. The Indophenol blue photometric technique and a total carbon analyzer were used to determine the ammonia concentration and carbonate species concentration, respectively. The equilibrium relationships of the concerned species in water were used to analyze the distribution of ionic and gaseous species present in the solution at different stages of the process. The results can be used to evaluate the economic and environmental feasibility of the FO desalination process for water supply.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2014.915388