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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