Water harvesting from municipal wastewater via osmotic gradient: An evaluation of process performance

Linares, Rodrigo Valladares; Li, Zhenyu; Abu-Ghdaib, Muhannad; Wei, Chun-Hai; Amy, Gary L.; Vrouwenvelder, Johannes S.

doi:10.1016/j.memsci.2013.07.018

Cited by 121 publications

(40 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the cost of the entire desalination process is also reduced. These studies show that FO desalination integrates fresh water treatment operations from wastewater treatment and seawater, providing a water-energy nexus for coastal cities and a promising process [54,76].…”

Section: Desalinationmentioning

confidence: 81%

“…In the indirect FO desalination, there is a degraded matrix, such as wastewater or urban stormwater runoff, on the FS side, while DS is using high salinity solution [54,76]. Potential DS in indirect FO desalination is seawater and brackish water.…”

Section: Desalinationmentioning

confidence: 99%

“…Indirect desalination experiments have demonstrated the ability of FO membranes to reject waste water nutrients, especially COD and phosphate and moderately nitrogen. In addition, Linares et al [76] could adapt the system to the primary clarifier tank using a submerged membrane module, in partial desalination of seawater. This study also showed that FO membranes could reject up to 98% of heavy metals in wastewater.…”

Section: Desalinationmentioning

confidence: 99%

See 2 more Smart Citations

Forward Osmosis Membranes – A Review: Part II

Eyvaz¹,

Arslan²,

İmer³

et al. 2018

Osmotically Driven Membrane Processes - Approach, Development and Current Status

View full text Add to dashboard Cite

Forward osmosis (FO) is a technical term describing the natural phenomenon of osmosis: the transport of water molecules across a semipermeable membrane by osmotic pressure from a feed solution (FS) to a draw solution (DS). The diluted DS is then reconcentrated to recycle the draw solutes as well as to produce purified water. As the driving force is only the osmotic pressure difference between two solutions, meaning that there is no need to apply an external energy, this results in low fouling propensity of membrane and minimization of irreversible cake forming, which are the main problems controverted by membrane applications, especially in biological treatment systems (e.g., FO membrane bioreactor (FO-MBR)). The purpose of the book chapter is to bring an overview on the FO membrane manufacturing, characterizing and application area at laboratory or full scales. This book chapter is published in two parts. In the second part, which appears here, characterization of mass transport in FO membranes, fouling mechanisms and foulants on FO membranes in naturally asymmetric structure and application areas of FO membranes in the literature are mentioned. Cutting-edge technologies on FO studies are comprehensively reviewed and following major and minor titles are stated truly on the new technologies.

show abstract

Section: Desalinationmentioning

confidence: 81%

Section: Desalinationmentioning

confidence: 99%

Section: Desalinationmentioning

confidence: 99%

See 1 more Smart Citation

Forward Osmosis Membranes – A Review: Part II

Eyvaz¹,

Arslan²,

İmer³

et al. 2018

Osmotically Driven Membrane Processes - Approach, Development and Current Status

View full text Add to dashboard Cite

show abstract

“…seawater/brackish water) as the DS and a poor-quality water source such as wastewater effluent or urban storm water runoff as FS. 44,45 The diluted seawater/brackish water DS can then be desalinated using low pressure reverse osmosis (LPRO). The FO-LPRO hybrid process reduces the cost of the total desalination process compared to pure RO 33 .…”

Section: Desalinationmentioning

confidence: 99%

Forward Osmosis in Wastewater Treatment Processes

Korenak¹,

Basu²,

Balakrishnan³

et al. 2017

ACSi

View full text Add to dashboard Cite

In recent years, membrane technology has been widely used in wastewater treatment and water purification. Membrane technology is simple to operate and produces very high quality water for human consumption and industrial purposes. One of the promising technologies for water and wastewater treatment is the application of forward osmosis. Essentially, forward osmosis is a process in which water is driven through a semipermeable membrane from a feed solution to a draw solution due to the osmotic pressure gradient across the membrane. The immediate advantage over existing pressure driven membrane technologies is that the forward osmosis process per se eliminates the need for operation with high hydraulic pressure and forward osmosis has low fouling tendency. Hence, it provides an opportunity for saving energy and membrane replacement cost. However, there are many limitations that still need to be addressed. Here we briefly review some of the applications within water purification and new developments in forward osmosis membrane fabrication.

show abstract

“…The properties of natural seawater used in this study were reported in our previous publication [16]. This study was initially conducted as the post-treatment method for our previous FO study in which seawater could be diluted before desalination [20]. Therefore, the 50% diluted natural seawater (DSW, 50% diluted by deionized (DI) water) was employed as FS in this study.…”

Section: Fs Ds and Fo Set-upmentioning

confidence: 99%

Calcium carbonate scaling in seawater desalination by ammonia–carbon dioxide forward osmosis: Mechanism and implications

Linares

Bucs

et al. 2015

Journal of Membrane Science

Self Cite

View full text Add to dashboard Cite

Forward Osmosis (FO) is an osmotically driven membrane process, where the membrane separates a draw solution (DS) with high salinity from a feed solution (FS) with low salinity. There can be a counter direction flow of salt (i.e., salt leakage) that may interact with the water flux through the FO membrane. For the first time reported, this study describes a new calcium carbonate scaling phenomenon in the seawater FO desalination process using ammonium bicarbonate as the DS. The scaling on the membrane surface at the feed side is caused by the interaction between an anion reversely diffused from the DS and a cation present in the FS, causing a significant decline of the water flux. The composition of the scaling layer is dominated by the solubility (represented as solubility product constant, Ksp) of salt formed by the paired anion and 2 cation. Membrane surface morphology plays a crucial role in the reversibility of the scaling. If the scaling occurs on the active layer of the FO membrane, hydraulic cleaning (increasing crossflow velocity) efficiency to restore the water flux is up to 82%. When scaling occurs on the support layer of the FO membrane, the hydraulic cleaning efficiency is strongly reduced, with only 36% of the water flux recovered. The present study reveals the risk of scaling induced by the interaction of feed solute and draw solute, which is different from the scaling caused by the supersaturation in reverse osmosis and other FO studies reported. The scaling investigated in this study can occur with a very low solute concentration at an early stage of the FO process. This finding provides an important implication for selection of draw solution and development of new membranes in the FO process.

show abstract

Water harvesting from municipal wastewater via osmotic gradient: An evaluation of process performance

Cited by 121 publications

References 37 publications

Forward Osmosis Membranes – A Review: Part II

Forward Osmosis Membranes – A Review: Part II

Forward Osmosis in Wastewater Treatment Processes

Calcium carbonate scaling in seawater desalination by ammonia–carbon dioxide forward osmosis: Mechanism and implications

Contact Info

Product

Resources

About