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Licensed Unlicensed Requires Authentication Published by De Gruyter December 12, 2019

Concentration Enrichment of Fermentation Derived Acetic Acid: Transport Modeling of Forward Osmosis-Nanofiltration Integrated System

Jayato Nayak, Parimal Pal, Zunipa Roy, Sankha Chakrabortty, Pinaki Dey, Siddhartha Pandey, S. Anand Kumar Varma and K. Subashini

Abstract

Forward Osmosis (FO)-Nanofiltration (NF) integration as the final product polishing step enables high concentration of acetic acid output through continuous dehydration of fermentation derived product. A mathematical transport model has been developed based on external and internal concentration polarization modulus of FO and extended Nernst–Plank equation for NF to capture the flux and rejection trends from those membranes. The modular designed production scheme ensured high flux (45 Lm−2 h−1), concentration (962 g L−1) and purity (>98 %) of acetic acid under non-neutralization condition. Excellent performance of the model is reflected in low relative error (<0.05), high Willmott d-index (>0.97) and high correlation coefficient (>0.98).

Funding source: Department of Science and Technology

Award Identifier / Grant number: DST-FIST

Funding statement: Department of Science and Technology, Ministry of Science and Technology, Funder Id: http://dx.doi.org/10.13039/501100001409, Grant Number: DST-FIST

Acknowledgements

The authors acknowledge financial support under DST-FIST Program and Ministry of Human Resource Development of the Government of India.

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Received: 2019-02-13
Revised: 2019-10-22
Accepted: 2019-11-26
Published Online: 2019-12-12

© 2019 Walter de Gruyter GmbH, Berlin/Boston