scholarly journals In situ visualization of organic fouling and cleaning mechanisms in reverse osmosis and forward osmosis

Desalination ◽  
2016 ◽  
Vol 399 ◽  
pp. 138-147 ◽  
Author(s):  
Emily W. Tow ◽  
Martin M. Rencken ◽  
John H. Lienhard
Keyword(s):  
Reverse Osmosis ◽  
Forward Osmosis ◽  
Organic Fouling ◽  
In Situ Visualization

In Situ Surface Chemical Modification of Thin-Film Composite Forward Osmosis Membranes for Enhanced Organic Fouling Resistance

2013 ◽  
Vol 47 (21) ◽  
pp. 12219-12228 ◽  
Author(s):  
Xinglin Lu ◽  
Santiago Romero-Vargas Castrillón ◽  
Devin L. Shaffer ◽  
Jun Ma ◽  
Menachem Elimelech
Keyword(s):  
Thin Film ◽  
Chemical Modification ◽  
Forward Osmosis ◽  
Surface Chemical ◽  
Fouling Resistance ◽  
Film Composite ◽  
Thin Film Composite ◽  
Organic Fouling ◽  
Surface Chemical Modification

scholarly journals New insights into the organic fouling mechanism of an in situ Ca2+ modified thin film composite forward osmosis membrane

RSC Advances ◽  
2019 ◽  
Vol 9 (65) ◽  
pp. 38227-38234 ◽  
Author(s):  
Xiujuan Hao ◽  
Shanshan Gao ◽  
Jiayu Tian ◽  
Songxue Wang ◽  
Huizhong Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Organic Substances ◽  
Film Composite ◽  
Fouling Mechanism ◽  
Thin Film Composite ◽  
Organic Fouling ◽  
Tfc Membrane

In this study, the effect of organic substances on the fouling behavior of a thin film composite (TFC) membrane with in situ Ca2+ addition (TFC-Ca membrane) was evaluated.

scholarly journals Role of pressure in organic fouling in forward osmosis and reverse osmosis

2015 ◽  
Vol 493 ◽  
pp. 748-754 ◽  
Author(s):  
Ming Xie ◽  
Jongho Lee ◽  
Long D. Nghiem ◽  
Menachem Elimelech
Keyword(s):  
Reverse Osmosis ◽  
Forward Osmosis ◽  
Organic Fouling

scholarly journals Using Reverse Osmosis Membrane at High Temperature for Water Recovery and Regeneration from Thermo-Responsive Ionic Liquid-Based Draw Solution for Efficient Forward Osmosis

Membranes ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 588
Author(s):  
Eiji Kamio ◽  
Hiroki Kurisu ◽  
Tomoki Takahashi ◽  
Atsushi Matsuoka ◽  
Tomohisa Yoshioka ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
High Temperature ◽  
Energy Saving ◽  
Osmotic Pressure ◽  
Reverse Osmosis ◽  
Forward Osmosis ◽  
Solution Temperature ◽  
Water Recovery ◽  
Temperature Dependent ◽  
Draw Solution

Forward osmosis (FO) membrane process is expected to realize energy-saving seawater desalination. To this end, energy-saving water recovery from a draw solution (DS) and effective DS regeneration are essential. Recently, thermo-responsive DSs have been developed to realize energy-saving water recovery and DS regeneration. We previously reported that high-temperature reverse osmosis (RO) treatment was effective in recovering water from a thermo-responsive ionic liquid (IL)-based DS. In this study, to confirm the advantages of the high-temperature RO operation, thermo-sensitive IL-based DS was treated by an RO membrane at temperatures higher than the lower critical solution temperature (LCST) of the DS. Tetrabutylammonium 2,4,6-trimethylbenznenesulfonate ([N4444][TMBS]) with an LCST of 58 °C was used as the DS. The high-temperature RO treatment was conducted at 60 °C above the LCST using the [N4444][TMBS]-based DS-lean phase after phase separation. Because the [N4444][TMBS]-based DS has a significantly temperature-dependent osmotic pressure, the DS-lean phase can be concentrated to an osmotic pressure higher than that of seawater at room temperature (20 °C). In addition, water can be effectively recovered from the DS-lean phase until the DS concentration increased to 40 wt%, and the final DS concentration reached 70 wt%. From the results, the advantages of RO treatment of the thermo-responsive DS at temperatures higher than the LCST were confirmed.

Quantifying the influence of divalent cations mass transport on critical flux and organic fouling mechanism of forward osmosis membrane

Desalination ◽  
2021 ◽  
Vol 512 ◽  
pp. 115146
Author(s):  
Thanh-Tin Nguyen ◽  
Rusnang Syamsul Adha ◽  
Chulmin Lee ◽  
Dong-Ho Kim ◽  
In S. Kim
Keyword(s):  
Mass Transport ◽  
Divalent Cations ◽  
Forward Osmosis ◽  
Critical Flux ◽  
Fouling Mechanism ◽  
Organic Fouling
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