Study of reverse osmosis separation and permeation rate for sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) membranes of different ion exchange capacities

1995 ◽  
Vol 58 (3) ◽  
pp. 613-620 ◽  
Author(s):  
Ali Hamza ◽  
Geeta Chowdhury ◽  
T. Matsuura ◽  
S. Sourirajan
Keyword(s):  
Ion Exchange ◽  
Reverse Osmosis ◽  
Permeation Rate ◽  
Phenylene Oxide ◽  
Oxide Membranes ◽  
Sulfonated Poly

Sulfonated poly(phenylene oxide) membranes as promising materials for new proton exchange membranes

2006 ◽  
Vol 17 (5) ◽  
pp. 360-365 ◽  
Author(s):  
Shifang Yang ◽  
Chunli Gong ◽  
Rong Guan ◽  
Hua Zou ◽  
Hua Dai
Keyword(s):  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Phenylene Oxide ◽  
Oxide Membranes ◽  
Sulfonated Poly

Pervaporation separation of water/ethanol mixture by poly(phenylene oxide) and sulfonated poly(phenylene oxide) membranes

2007 ◽  
Vol 105 (3) ◽  
pp. 1566-1574 ◽  
Author(s):  
Chi-Yu Shih ◽  
Shih-Hsiung Chen ◽  
Ray-May Liou ◽  
Juin-Yih Lai ◽  
Jang-Song Chang
Keyword(s):  
Ethanol Mixture ◽  
Phenylene Oxide ◽  
Oxide Membranes ◽  
Pervaporation Separation ◽  
Sulfonated Poly

Innovative concepts of regeneration of decolorization ion exchange resins in sugar refineries

2016 ◽  
pp. 377-380
Author(s):  
Marc André Théoleyre ◽  
Anne Gonin ◽  
Dominique Paillat
Keyword(s):  
Ion Exchange ◽  
Reverse Osmosis ◽  
Energy Supply ◽  
Ion Exchange Resins ◽  
Salt Solutions ◽  
Nanofiltration Membranes ◽  
Local Conditions ◽  
Salt Consumption ◽  
Multiple Effect ◽  
Exchange Resins

Regeneration of resins used for decolorization of sugar solutions is done with concentrated salt solutions. Nanofiltration membranes have been proven effective, in terms of industrial efficiency in decreasing salt consumption. More than 90% of the salt that is necessary for regeneration can be recycled through a combination of direct recycling of intermediate eluates, the separation of colored compounds by use of very selective nanofiltration membranes and a system to concentrate salty permeates. According to specific local conditions on energy supply and cost, the concentration of salty permeates can be either a multiple effect evaporator or a combination of electrodialysis and reverse osmosis. The desalted color compound solution is sent to the molasses, limiting considerably the effluent to be treated. Starting from a liquor of 800 IU, the water requirement is limited to less than 100 L/t of sugar and the amount of wastewater can be reduced to less than 40 L/t of sugar.

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