Solute and water transport in forward osmosis using polydopamine modified thin film composite membranes

Arena, Jason T.; Manickam, Seetha S; Reimund, Kevin K.; Freeman, Benny D.; McCutcheon, Jeffrey R.

doi:10.1016/j.desal.2014.01.009

Cited by 89 publications

(69 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resultant modified membrane reduced ICP and increased hydrophilicity, which enhanced the membrane water flux in FO tests. Improvements in water flux by eight to fifteen times was shown by the modified membranes [18,150]. As a result, the modification method will allow the existing TFC membranes to be used for all engineered osmosis applications.…”

Section: Membrane Advancementmentioning

confidence: 95%

Recent advancements in forward osmosis desalination: A review

Akther¹,

Sodiq²,

Giwa³

et al. 2015

Chemical Engineering Journal

410

203

View full text Add to dashboard Cite

Section: Membrane Advancementmentioning

confidence: 95%

Recent advancements in forward osmosis desalination: A review

Akther¹,

Sodiq²,

Giwa³

et al. 2015

Chemical Engineering Journal

410

203

View full text Add to dashboard Cite

“…TFC membrane could behave similarly to a cation exchange membrane when the carboxylic acid groups in the active layer become deprotonated (-COOH becomes eCOO -), which will favor the transport of Na þ and hinder the transport of Cl À (Arena et al 2014(Arena et al , 2015Lu et al, 2014a;Tang et al, 2007). The mechanism of ion transport in the present OsMFC was proposed in Fig.…”

Section: Ion Transport In the Osmfcmentioning

confidence: 99%

“…For example, it was reported that the current generation in microbial desalination cells (MDCs) could inhibit back diffusion of ions from the anolyte into the desalinated stream (Ping et al, 2016). In addition, the electric field has been employed to reduce the membrane fouling in membrane bioreactors via the electrostatic repulsion between negative charged foulants and the cathode (Bani-Melhem and Elektorowicz, 2010;Chen et al, 2007;Liu et al, 2013). Thus, we hypothesized that the current generated in OsMFCs could inhibit RSF.…”

Section: Introductionmentioning

confidence: 99%

Effects of current generation and electrolyte pH on reverse salt flux across thin film composite membrane in osmotic microbial fuel cells

Qin

Abu-Reesh

2016

Water Research

View full text Add to dashboard Cite

a b s t r a c tOsmotic microbial fuel cells (OsMFCs) take advantages of synergy between forward osmosis (FO) and microbial fuel cells (MFCs) to accomplish wastewater treatment, current generation, and high-quality water extraction. As an FO based technology, OsMFCs also encounter reverse salt flux (RSF) that is the backward transport of salt ions across the FO membrane into the treated wastewater. This RSF can reduce water flux, contaminate the treated wastewater, and increase the operational expense, and thus must be properly addressed before any possible applications. In this study, we aimed to understand the effects of current generation and electrolyte pH on RSF in an OsMFC. It was found that electricity generation could greatly inhibit RSF, which decreased from 16.3 ± 2.8 to 3.9 ± 0.7 gMH when the total Coulomb production increased from 0 to 311 C. The OsMFC exhibited 45.9 ± 28.4% lower RSF at the catholyte pH of 3 than that at pH 11 when 40 U external resistance was connected. The amount of sodium ions transported across the FO membrane was 18.3e40.7% more than that of chloride ions. Ion transport was accomplished via diffusion and electrically-driven migration, and the theoretical analysis showed that the inhibited electrically-driven migration should be responsible for the reduced RSF. These findings are potentially important to control and reduce RSF in OsMFCs or other osmotic-driven processes.

show abstract

“…Despite the thin film composite membranes have fixed a new level in RO process, they suffer from compaction effects under pressure [102][103][104]. If the applied hydraulic, or consequently the water pressure, is elevated, the polymers will be reoriented in a various direction that conducts to a lower porosity and finally influencing the membrane efficiency [4].…”

Section: Problems Arising In Ro Processmentioning

confidence: 99%

Short Communication: Requiring Reverse Osmosis Membranes Modifications – An Overview

Ghernaout¹

2017

AJCHE

View full text Add to dashboard Cite

Do really reverse osmosis (RO) membranes need modification to cover their disadvantages or enhance their efficiency? Are there any defects in RO membranes manufacturing that require modification? These questions are discussed here in this short review. Through the world, there are thousands of patents, publications, and PhD theses dealing with surface modification and grafting of RO membranes. This growing phenomenon should attract the attention of the scientific community for technologic and economic reasons. Due to the increasing water pollution levels, which overpassed the RO membranes capacities, there is an urgent need to manufacture RO membranes, with multidisciplinary characteristics and high performance regarding both salts removal and fouling resistance, before sending them to the market and avoiding to think to their following modification.

show abstract

Solute and water transport in forward osmosis using polydopamine modified thin film composite membranes

Cited by 89 publications

References 43 publications

Recent advancements in forward osmosis desalination: A review

Recent advancements in forward osmosis desalination: A review

Effects of current generation and electrolyte pH on reverse salt flux across thin film composite membrane in osmotic microbial fuel cells

Short Communication: Requiring Reverse Osmosis Membranes Modifications – An Overview

Contact Info

Product

Resources

About