Interaction between humic acid and silica in reverse osmosis membrane fouling process: A spectroscopic and molecular dynamics insight

2021 ◽  
pp. 117773
Author(s):  
Danyang Li ◽  
Weichen Lin ◽  
Ruipeng Shao ◽  
Yue-Xiao Shen ◽  
Xianzheng Zhu ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Humic Acid ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Reverse Osmosis Membrane

scholarly journals A feasibility study on UV pretreatment for microfiltration and reverse osmosis membrane processes in wastewater reclamation

2013 ◽  
Vol 3 (3) ◽  
pp. 260-267
Author(s):  
Ho-Young Jeong ◽  
Yoon-Jin Kim ◽  
Ji-Hee Han ◽  
Dong-Ha Kim ◽  
Jinsik Sohn ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Treatment Options ◽  
Human Consumption ◽  
Feed Water ◽  
Reverse Osmosis Membrane ◽  
Wastewater Reclamation ◽  
Important Place ◽  
Quality Water ◽  
Small Footprint

Wastewater reclamation is where wastewater from various sources is purified so the water can be used by human consumption. Among many treatment options, membranes have gained an important place in wastewater reclamation. It allows the production of high quality water from wastewater, with a small footprint and affordable energy consumption. Nevertheless, membrane fouling is regarded as a serious problem due to the high fouling potential of wastewater. In this study, we applied ultraviolet (UV) processes as a pretreatment for membrane systems that are used for wastewater reclamation. Low pressure UV (LUV) and pulsed UV (PUV) were used to decompose or alter the organics in the feed water of the membranes. Effluent organic matter was characterized by total organic carbon (TOC) and UV absorbance (UVA). Also the effect of UV pretreatment on membrane fouling was investigated for microfiltration (MF) and reverse osmosis (RO) processes. The pretreatment of membranes using LUV or PUV was effective to control fouling of hollow fiber MF membranes. This is probably because of the reduction and modification of organics after UV treatments. However, the effect of UV pretreatment on RO flux was less significant, which is attributed to low fouling prophecy after MF treatment.

Molecular dynamics study on the elucidation of polyamide membrane fouling by nonionic surfactants and disaccharides

2021 ◽  
Vol 23 (36) ◽  
pp. 20313-20322 ◽  
Author(s):  
Yuki Kawabata ◽  
Ralph Rolly Gonzales ◽  
Keizo Nakagawa ◽  
Takuji Shintani ◽  
Hideto Matsuyama ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Energy Efficient ◽  
Nonionic Surfactants ◽  
Separation Technology ◽  
Efficient Separation ◽  
Polyamide Membrane

Reverse osmosis (RO) is a widely used energy-efficient separation technology for water treatment.

The molecular structures of polysaccharides affect their reverse osmosis membrane fouling behaviors

2020 ◽  
pp. 118984
Author(s):  
Yin-Hu Wu ◽  
Xin Tong ◽  
Xue-Hao Zhao ◽  
Yuan Bai ◽  
Nozomu Ikuno ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Molecular Structures ◽  
Reverse Osmosis Membrane

Alleviating reverse osmosis membrane fouling caused by biopolymers using pre-ozonation

2020 ◽  
Vol 595 ◽  
pp. 117546 ◽  
Author(s):  
Zhonglong Yin ◽  
Tiancheng Wen ◽  
Yan Li ◽  
Aimin Li ◽  
Chao Long
Keyword(s):  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Reverse Osmosis Membrane

Preozonation Effects on the Reduction of Reverse Osmosis Membrane Fouling in Water Reuse

2011 ◽  
Vol 33 (5) ◽  
pp. 379-388 ◽  
Author(s):  
Benjamin D. Stanford ◽  
Aleksey N. Pisarenko ◽  
R. David Holbrook ◽  
Shane A. Snyder
Keyword(s):  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Water Reuse ◽  
Reverse Osmosis Membrane
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