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Forward Osmosis: An Energy-Efficient Approach for the Treatment and Recovery of Resources from the Dairy Industry Effluent

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Title Forward Osmosis: An Energy-Efficient Approach for the Treatment and Recovery of Resources from the Dairy Industry Effluent
 
Creator Agrawal, Vibha
Kharade, Sanmesh
Achari, Mukesh
Pawar, Hitesh
Sarode, Dilip
 
Subject Forward osmosis
Industrial wastewater
Membrane separation
Lactose
 
Description 943-954
The study explores implementing the Forward Osmosis (FO) membrane separation process to recover resources from
whey, a waste stream in the dairy industry. A Hollow Fibre FO (HF-FO) membrane with membrane area of 13.8 m2 was
employed, using aqueous NaCl as the draw solution. The optimization study delves into the impact of operating parameters
such as mode of FO, concentration and osmotic pressure of draw solution and Transmembrane Pressure (TMP) on overall
process efficiency. In the recirculation mode of FO, 24% (w/w) aqueous NaCl draw solution attained an impressive water
recovery of 83.06% at a flux of 2.206 LMH (liters per square meter per hour) without any external TMP. With a slight
application of TMP of 0.35 bar, water recovery further increased to 94.41%, concurrently achieving a high concentration
factor of 17.87 at a flux of 2.462 LMH. Notably, lactose, a value-added product, is concentrated from 3.95% to 49.5% in the
concentrated whey stream. The reported FO process exhibited remarkable energy efficiency, achieving a specific energy
consumption of less than 8 kWh per ton of water removed. Thus, this approach is resourcefully and economically beneficial
for the dairy industry, presenting a sustainable solution with positive environmental implications.
 
Date 2024-09-18T09:32:36Z
2024-09-18T09:32:36Z
2024-09
 
Type Article
 
Identifier 0022-4456 (Print); 0975-1084 (Online)
http://nopr.niscpr.res.in/handle/123456789/64559
https://doi.org/10.56042/jsir.v83i9.9997
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source JSIR Vol.83(09) [September 2024]