Composite reverse osmosis membrane with a selective separation layer of double-layer structure for enhanced desalination, anti-fouling and durability properties

Liu, Meihong; He, Qingyuan; Guo, Zhongwei; Zhang, Kaifei; Yu, Shuili; Gao, Congjie

doi:10.1016/j.desal.2020.114838

Cited by 35 publications

(10 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For brackish water with high salinity, the desalination rate of single-stage NF usually cannot meet the desalination requirements, while the energy consumption of RO treatment is high [ 127 , 128 ]. So, the researchers set their sights on the dual-stage NF which indeed is the combined application of NF and NF.…”

Section: Combined Utilization Of Nf With Other Membrane Technologymentioning

confidence: 99%

Progress in Research and Application of Nanofiltration (NF) Technology for Brackish Water Treatment

et al. 2021

View full text Add to dashboard Cite

Brackish water is a potential fresh water resource with lower salt content than seawater. Desalination of brackish water is an important option to alleviate the prevalent water crisis around the world. As a membrane technology ranging between UF and RO, NF can achieve the partial desalination via size exclusion and charge exclusion. So, it has been widely concerned and applied in treatment of brackish water during the past several decades. Hereon, an overview of the progress in research on and application of NF technology for brackish water treatment is provided. On the basis of expounding the features of brackish water, the factors affecting NF efficiency, including the feed water characteristics, operating conditions and NF membrane properties, are analyzed. For the ubiquitous membrane fouling problem, three preventive fouling control strategies including feed water pretreatment, optimization of operating conditions and selection of anti-fouling membranes are summarized. In addition, membrane cleaning methods for restoring the fouled membrane are discussed. Furthermore, the combined utilization of NF with other membrane technologies is reviewed. Finally, future research prospects are proposed to deal with the current existing problems. Lessons gained from this review are expected to promote the sustainable development of brackish water treatment with NF technology.

show abstract

Section: Combined Utilization Of Nf With Other Membrane Technologymentioning

confidence: 99%

Progress in Research and Application of Nanofiltration (NF) Technology for Brackish Water Treatment

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In their study, the membrane constructed was Ru/Pd/Al 2 O 3 /PHA. At 773 K and 100 kPa operating conditions, the hydrogen permeation flux, H 2 permeability, and selectivity of the membrane were observed to be 4.5 5 and infinity, respectively. The H 2 permeability for this membrane (6.8 μm thick) was higher than the pure palladium membranes (Pd/Al 2 O 3 , 6.0 μm thick; Pd/Al 2 O 3 /PSS, 5.0 μm thick; Pd/Al 2 O 3 /PHA, 7.5 μm thick).…”

Section: Hydrogen Permeability In Pd-based Alloymentioning

confidence: 98%

“…Since the inception of membranes, they have been widely adopted, and a tremendous amount of work has been done over the past 50 years in the advancement and testing of membranes including some novel methods of manufacturing. Membranes are now being used widely in many applications including carbon capture, , hydrogen separation, microfiltration, reverse osmosis, etc. There are many advantages of membranes, which include but are not limited to Low energy consumption Continuous separation Rigorous process conditions Integration with other separation technologies. …”

Section: Introductionmentioning

confidence: 99%

Palladium-Alloy Membrane Reactors for Fuel Reforming and Hydrogen Production: A Review

et al. 2021

View full text Add to dashboard Cite

Hydrogen has a potential to be a clean energy carrier that emits only water after combustion and can be produced from diverse feedstocks. Hydrogen has much better combustion characteristics in conventional combustion systems and higher energy efficiency when used with fuel cells. More than 75 million tons of hydrogen are currently produced primarily using fossil fuels as feedstock via steam methane reforming processes. Steam methane reforming is the mature technology for producing hydrogen and when coupled with CO2 capture can help address climate challenges. Inorganic palladium (Pd) membranes have demonstrated great potential to separate hydrogen due to their stability and high selectivity for hydrogen. In this review, several methods of fabricating Pd-alloy membranes are discussed and compared in terms of membrane stability and selectivity of hydrogen. Such methods include electroless plating (ELP), chemical vapor deposition (CVD), physical vapor deposition (PVD), and electroplating deposition (EPD). The permeability of hydrogen in different Pd-based alloy membranes are presented and compared. Focus has been made, in this review, on Pd–Ag, Pd–Cu, Pd–Au, and Pd–Ru alloys. The effects of impurities (H2S, CO, O2, and CO2) on performance of different Pd-based alloy membranes are also investigated. Moreover, the subject of using Pd-membrane reactors for fuel reforming and H2 production is investigated in detail based on numerous experimental and numerical studies in the literature, considering different membrane reactor designs: axial-flow tubular, radial-flow tubular, axial-flow spherical, packed-bed, fluidized bed, and slurry bubble column. The performance of Pd-membranes in such reactors for hydrogen production is compared, and the effects of temperature, pressure, H2O/CH4 ratio, and residence time on reformer performance are also investigated. Finally, the use of computational methods, particularly, density functional theory (DFT), to complement well-established experimental methods for studying the diffusion of H and its isotopes in different metals is reviewed. The review concludes with some insights into future work to bring Pd-membrane reactors to the level required for hydrogen production at the commercial level.

show abstract

“…Some of its drawbacks include membrane degradation because of fouling or corrosion. However, research is currently being done to improve the membrane, allowing for enhanced desalination, anti-fouling and durability properties ( Liu et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Dynamic simulation and optimization of integrated clean energy water systems

Hills¹,

Dana²,

Wang³

2022

iScience

View full text Add to dashboard Cite

Composite reverse osmosis membrane with a selective separation layer of double-layer structure for enhanced desalination, anti-fouling and durability properties

Cited by 35 publications

References 56 publications

Progress in Research and Application of Nanofiltration (NF) Technology for Brackish Water Treatment

Progress in Research and Application of Nanofiltration (NF) Technology for Brackish Water Treatment

Palladium-Alloy Membrane Reactors for Fuel Reforming and Hydrogen Production: A Review

Dynamic simulation and optimization of integrated clean energy water systems

Contact Info

Product

Resources

About