Reshma Lakra
@loyolaacademy.edu.in
Assistant Professor, Department of Chemical Technology
Loyola Academy Old-Alwal Secunderabad, Telangana-500010
RESEARCH, TEACHING, or OTHER INTERESTS
Chemical Engineering, Environmental Engineering, Filtration and Separation, Surfaces, Coatings and Films
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Reshma Lakra, Muhammad Roil Bilad, Malini Balakrishnan, and Subhankar Basu
Chemical Engineering Research and Design Elsevier BV
Reshma Lakra and Subhankar Basu
Elsevier BV
Hira Naveed, Haleefa Shaheen, Ranjana Kumari, Reshma Lakra, Asim Laeeq Khan, and Subhankar Basu
CRC Press
Subhankar Basu, Reshma Lakra, Ranjana Kumari, Wasim A. Shaikh, and Sukalyan Chakraborty
Springer International Publishing
Reshma Lakra, Malini Balakrishnan, and Subhankar Basu
IWA Publishing
Abstract Cellulose triacetate (CTA) is the first-generation forward osmosis (FO) membrane used for desalination. There have been a few chemical modifications of the CTA membrane surface. This has improved membrane hydrophilicity, water flux, and salt rejection compared with unmodified CTA membranes. Chitosan-containing porous materials as composites have resulted in increased pore characteristics. It has motivated the modification of the surface of the commercial CTA forward osmosis (FO) membrane by surface coating with chitosan (CS)–powdered activated carbon (AC) mix. The membrane morphology was characterized by SEM, FTIR-ATR, contact angle measurement and AFM. Operational conditions for FO such as the orientation of the membrane active layer, feed and draw solution flow rates, and type and concentration of draw salt were optimized with the original CTA membrane. The modified membrane exhibited around a two-fold increase in the water flux and reduced reverse salt flux compared with the original CTA membrane. The improved water flux was attributed to the CS-AC coating enhancing water wettability of the membrane surface and the porous AC generating additional water flow channels. Overall, the water flux of the CTA-CS-AC membrane developed in this work was superior to that of CTA and cellulose acetate (CA) membranes reported in the literature.
Reshma Lakra, Malini Balakrishnan, and Subhankar Basu
Elsevier BV
Reshma Lakra, Sonali Choudhury, and Subhankar Basu
Elsevier BV
Reshma Lakra, R. Saranya, Y. Lukka Thuyavan, S. Sugashini, K.M.Meera.S. Begum, and G. Arthanareeswaran
Elsevier BV