Antiscaling efficacy of CaCO3and CaSO4on polyethylene glycol (PEG)-modified reverse osmosis membranes in the presence of humic acid: interplay of membrane surface properties and water chemistry

A specific polyethylene glycol (PEG)–humic acid–SO42−interaction results in promoted CaSO4colloidal formation on PEG reverse osmosis membrane surfaces.

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Evaluation of carbon nanotube-polyamide thin-film nanocomposite reverse osmosis membrane: Surface properties, performance characteristics and fouling behavior

Journal of Industrial and Engineering Chemistry ◽

10.1016/j.jiec.2017.07.028 ◽

2017 ◽

Vol 56 ◽

pp. 327-334 ◽

Cited By ~ 23

Author(s):

Youngbin Baek ◽

Hee Joong Kim ◽

Seung-Hyun Kim ◽

Jong-Chan Lee ◽

Jeyong Yoon

Keyword(s):

Thin Film ◽

Carbon Nanotube ◽

Reverse Osmosis ◽

Surface Properties ◽

Membrane Surface ◽

Performance Characteristics ◽

Reverse Osmosis Membrane ◽

Thin Film Nanocomposite

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Fouling of reverse osmosis membranes by biopolymers in wastewater secondary effluent: Role of membrane surface properties and initial permeate flux

Journal of Membrane Science ◽

10.1016/j.memsci.2006.12.027 ◽

2007 ◽

Vol 290 (1-2) ◽

pp. 173-181 ◽

Cited By ~ 214

Author(s):

Qilin Li ◽

Zhihua Xu ◽

Ingo Pinnau

Keyword(s):

Reverse Osmosis ◽

Surface Properties ◽

Membrane Surface ◽

Secondary Effluent ◽

Permeate Flux ◽

Reverse Osmosis Membranes

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Enhancement of surface properties and performance of reverse osmosis membranes after surface modification: A review

Desalination ◽

10.1016/j.desal.2017.05.027 ◽

2017 ◽

Vol 420 ◽

pp. 330-383 ◽

Cited By ~ 86

Author(s):

Mahdieh Asadollahi ◽

Dariush Bastani ◽

Seyyed Abbas Musavi

Keyword(s):

Surface Modification ◽

Reverse Osmosis ◽

Surface Properties ◽

And Performance ◽

Reverse Osmosis Membranes

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Topology Optimization of Spacers for Maximizing Permeate Flux on Membrane Surface in Reverse Osmosis Channel

Volume 5: 37th Design Automation Conference, Parts A and B ◽

10.1115/detc2011-48933 ◽

2011 ◽

Author(s):

Seungjae Oh ◽

Semyung Wang ◽

Minkyu Park ◽

Joonha Kim

Keyword(s):

Topology Optimization ◽

Pressure Drop ◽

Reverse Osmosis ◽

Membrane Surface ◽

Design Development ◽

Permeate Flux ◽

Membrane Channel ◽

Initial Attempt ◽

Membrane Surfaces ◽

Ro Membrane

The objective of this study is to design spacers using fluid topology optimization in 2D crossflow Reverse Osmosis (RO) membrane channel to improve the performance of RO processes. This study is an initial attempt to apply topology optimization to designing spacers in RO membrane channel. The performance was evaluated by the quantity of permeate flux penetrating both upper and lower membrane surfaces. A coupled Navier-Stokes and Convection-Diffusion model was employed to calculate the permeate flux. To get reliable solutions, stabilization methods were employed with standard finite element method. The nine reference models which consist of the combination of circle, rectangular, triangle shape and zigzag, cavity, submerge configuration of spacers were simulated. Such models were compared with new model designed by topology optimization. The permeate flux at both membrane surfaces was determined as an objective function. In addition, permissible pressure drop along the channel and spacer volume were used as constraints. As a result of topology optimization as the permissible pressure drop changes in channel, characteristics of spacer design development was founded. Spacer design based on topology optimization was reconstructed to a simple one considering manufactuability and characteristics of development spacer design. When a simplified design was compared with previous 9 models, new design has a better performance in terms of permeate flux and wall concentration at membrane surface.

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Recycling of end-of-life reverse osmosis membranes for membrane biofilms reactors (MBfRs). Effect of chlorination on the membrane surface and gas permeability.

Chemosphere ◽

10.1016/j.chemosphere.2019.05.108 ◽

2019 ◽

Vol 231 ◽

pp. 103-112 ◽

Cited By ~ 5

Author(s):

Jesús Morón-López ◽

Lucía Nieto-Reyes ◽

Sonia Aguado ◽

Rehab El-Shehawy ◽

Serena Molina

Keyword(s):

End Of Life ◽

Reverse Osmosis ◽

Gas Permeability ◽

Membrane Surface ◽

Reverse Osmosis Membranes

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A Novel Dynamic Electromagnetic Heating-Magnetizing Device Used for Reverse Osmosis System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.562-564.913 ◽

2012 ◽

Vol 562-564 ◽

pp. 913-916

Author(s):

Hai Du ◽

Yan Bin Qu ◽

Shu Kang Cheng

Keyword(s):

Reverse Osmosis ◽

Mechanical Energy ◽

Membrane Surface ◽

Heat Energy ◽

Feed Water ◽

Reverse Osmosis Membrane ◽

Operation Mechanism ◽

Electromagnetic Heating ◽

Electromagnetic Field Theory ◽

The Mathematical Model

A novel, environmental friendly dynamic rotating electromagnetic heating-magnetizing device is proposed, which can heat up and magnetize the low temperature feed water of reverse osmosis system. The device converts input mechanical energy into heat energy completely. The structure and operation mechanism are discussed in detail, and the mathematical model of loss is established based on fundamental electromagnetic field theory. At last, the effects of water magnetization treated by the device are introduced, which inhibits scaling on the reverse osmosis membrane surface and slows down the corrosion of metal surface.

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