IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Print this page

Key physicochemical characteristics governing organic micropollutant adsorption and transport in ion-exchange membranes during reverse electrodialysis
Roman, M.; Van Dijk, L.H.; Gutierrez, L.; Vanoppen, M.; Post, J.W.; Wols, B.A.; Cornelissen, E.R.; Verliefde, A.R.D. (2019). Key physicochemical characteristics governing organic micropollutant adsorption and transport in ion-exchange membranes during reverse electrodialysis. Desalination 468: 114084. https://hdl.handle.net/10.1016/j.desal.2019.114084
In: Desalination. Elsevier: Amsterdam. ISSN 0011-9164; e-ISSN 1873-4464, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine
Author keywords
    Organic micropollutants; Seawater desalination; Reverse electrodialysis;Ion-exchange membranes

Authors  Top 
  • Roman, M., more
  • Van Dijk, L.H.
  • Gutierrez, L., more
  • Vanoppen, M., more
  • Post, J.W.
  • Wols, B.A.
  • Cornelissen, E.R., more
  • Verliefde, A.R.D., more

Abstract
    The co-generation of electricity and electrodialysis of seawater in a hybrid system is a promising approach to overcome water scarcity. Reverse electrodialysis harvests energy from the salinity gradient, where seawater is used as a high salinity stream while secondary treated wastewater can be used as a sustainable low salinity stream. Treated wastewater contains organic micropollutants, which can be transported to the seawater stream. The current research establishes a connection between adsorption and transport of organic micropollutants in ion exchange membranes, using a cross-flow stack in adsorption and zero-current experiments. To mimic the composition of treated wastewater, a mixture of nineteen organic micropollutants of varied physicochemical characteristics (e.g. size, charge, polarity, hydrogen donor/acceptor count, hydrophobicity) at environmentally relevant concentrations was used. Depending on the charge, micropollutants develop different types of mechanisms responsible for short-distance interactions with ion-exchange membranes, which has a direct influence in their transport behavior. This study provides a rational basis for the optimization/design of next-generation ion-exchange membranes, in which the permeability toward organic micropollutants should be also included. This investigation highly contributes to understanding the potential hazard posed by organic micropollutants in reverse electrodialysis in seawater desalination systems, where treated wastewater is used as a low salinity stream.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors