Forward osmosis as an opportunity for acid mining effluent reuse - An assessment of concentration polarization effects on forward osmosis performance and economic aspects

2020 ◽  
pp. 1-13
Author(s):  
Gemima Santos Arcanjo ◽  
Carolina Rodrigues Dos Santos ◽  
Flávia Cristina Rodrigues Costa ◽  
Isabela Ferreira Batista ◽  
Míriam Cristina Santos Amaral
Keyword(s):  
Concentration Polarization ◽  
Forward Osmosis ◽  
Economic Aspects ◽  
Polarization Effects ◽  
Mining Effluent ◽  
Effluent Reuse

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

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Jayato Nayak ◽  
Parimal Pal ◽  
Zunipa Roy ◽  
Sankha Chakrabortty ◽  
Pinaki Dey ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Concentration Polarization ◽  
Transport Model ◽  
Acid Output ◽  
Forward Osmosis ◽  
Integrated System ◽  
High Concentration ◽  
Excellent Performance ◽  
Production Scheme ◽  
Internal Concentration

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).

Sign in / Sign up

Export Citation Format

Share Document