Jump to main content
Jump to site search


Reduction of Reverse Solute Flux Induced Solute Buildup in the Feed Solution of Forward Osmosis

Abstract

Forward osmosis (FO) has shown advancement towards recovery of useful water from various waste streams. A major issue that arises is the accumulation of salts due to reverse solute flux (RSF) from a draw solution into a feed solution that can result in several negative effects such as decreased water flux and inhibiting biological activities. This paper aims to provide a concise discussion and analysis of methods that can help to alleviate the effects of solute build up. New parameters, solute removal/recovery rate (SRR) and removal/recovery ratio (ReR), are proposed to help better define the performance of reducing solute buildup and employed in case studies to evaluate the selected reduction methods. Solute removal can be accomplished by physical separation, chemical precipitation, and biological removal. Recovery of solutes, one step beyond removal, is discussed and demonstrated by using bioelectrochemical systems and electrodialysis as examples. This work has highlighted the concerns associated with solute buildup and encouraged further exploration of effective tools to mitigate solute buildup for improved performance of FO-based water/wastewater systems.

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Sep 2019, accepted on 02 Dec 2019 and first published on 04 Dec 2019


Article type: Frontier
DOI: 10.1039/C9EW00775J
Environ. Sci.: Water Res. Technol., 2019, Accepted Manuscript

  •   Request permissions

    Reduction of Reverse Solute Flux Induced Solute Buildup in the Feed Solution of Forward Osmosis

    M. Ferby, S. Zou and Z. He, Environ. Sci.: Water Res. Technol., 2019, Accepted Manuscript , DOI: 10.1039/C9EW00775J

Search articles by author

Spotlight

Advertisements