Investigation of reverse ionic diffusion in forward-osmosis-aided dewatering of microalgae: A molecular dynamics study
Abstract
© 2019 Elsevier Ltd This study aimed to investigate the transport mechanisms of ions during forward-osmosis-driven (FO-driven) dewatering of microalgae using molecular dynamics (MD) simulations. The dynamical and structural properties of ions in FO systems of varying NaCl or MgCl2 draw solution (DS) concentrations were calculated and correlated. Results indicate that FO systems with higher DS concentration caused ions to have lower hydration numbers and higher coordination numbers leading to lower diffusion coefficients. The higher hydration number of Mg2+ ions resulted in significantly lower ionic permeability as compared to Na+ ions at all concentrations (p = 0.002). The simulations also revealed that higher DS concentrations led to higher accumulation of ions in the membrane. This study provides insights on the proper selection of DS for FO systems.
Source or Periodical Title
Bioresource Technology
ISSN
9608524
Page
181-188
Document Type
Article
Subject
Forward osmosis, Microalgae dewatering, Molecular dynamics, Reverse ionic diffusion
Recommended Citation
Itliong, Jester N.; Villagracia, Al Rey C.; Moreno, Joaquin Lorenzo V.; Rojas, Kurt Irvin M.; Bernardo, Gian Paolo O.; David, Melanie Y.; Manrique, Robby B.; Ubando, Aristotle T.; and Culaba, Alvin B., "Investigation of reverse ionic diffusion in forward-osmosis-aided dewatering of microalgae: A molecular dynamics study" (2021). Journal Article. 743.
https://www.ukdr.uplb.edu.ph/journal-articles/743