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Recovery of baking soda from reverse osmosis reject of desalination plant using carbon dioxide gas

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Title Recovery of baking soda from reverse osmosis reject of desalination plant using carbon dioxide gas
 
Creator Aishwaryalakshm, A
Palanivelu, K
 
Subject Alanine
Baking soda recovery
Carbon dioxide utilization
Modified Solvay process
RO reject brine
 
Description 174-180
The extraction of baking soda from the reverse osmosis (RO) reject of desalination plant using CO2 gas has been studied.
The novel idea of using amino acid additives to improvise the conventional Solvay process and thereby increasing the Na+
recovery efficiency has been explored. Three amino acid additives namely Glycine, L-Arginine and L-Alanine are studied
for their effect on increasing Na+ recovery and the best suitable additive is selected. Necessary parameters governing the
recovery such as concentration of amino acid, reaction temperature, flowrate of CO2 and carbonation time have been
optimized with a view to get a maximum recovery efficiency by the modified Solvay process. Under the optimized
conditions maximum sodium recovery of 70% is obtained. The modified Solvay process has yielded a higher recovery
efficiency compared to the conventional Solvay process (33%). Amino acid additive (alanine) has increased the conversion
efficiency and has also helped in reducing the ammonia requirement of the process. The results obtained show a feasible
way to protect our environment by utilizing the reject of the desalination plant and the industrial waste gas carbon dioxide in
bicarbonate production.
 
Date 2022-05-17T10:29:29Z
2022-05-17T10:29:29Z
2022-03
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscair.res.in/handle/123456789/59729
 
Language en
 
Publisher CSIR-NIScPR, India
 
Source IJCT Vol.29(2) [March 2022]