Fate and removal of trace pollutants from an anion exchange spent brine during the recovery process of natural organic matter and salts

Vaudevire, E.M.H.; Radmanesh, Farzaneh; Kolkman, Annemieke; Vughs, Dennis; Cornelissen, Emile; Post, Jan; van der Meer, W.G.J.

doi:10.1016/j.watres.2019.01.042

Fate and removal of trace pollutants from an anion exchange spent brine during the recovery process of natural organic matter and salts

Title

Fate and removal of trace pollutants from an anion exchange spent brine during the recovery process of natural organic matter and salts

Author

Vaudevire, E.M.H. (TU Delft BT/Environmental Biotechnology; TU Delft OLD BT/Cell Systems Engineering; Wetsus, Centre for Sustainable Water Technology; PWNT Water Technology)
Radmanesh, Farzaneh (University of Twente)
Kolkman, Annemieke (KWR Water Research Institute)
Vughs, Dennis (KWR Water Research Institute)
Cornelissen, Emile (KWR Water Research Institute; Universiteit Gent; Nanyang Technological University)
Post, Jan (Wetsus, Centre for Sustainable Water Technology)
van der Meer, W.G.J. (University of Twente; Oasen)

Date

2019

Abstract

The results of this sampling campaign on pilot scale processes aim to evaluate the occurrence and behavior of trace organic micro-pollutants and metal elements during anion exchange treatment of surface water and the subsequent treatment of generated spent brine with two types of electrodialysis membrane pairs. This knowledge is relevant to assess the quality and reusability of secondary products created during brine treatment; specifically the excess of sodium chloride to be recycled onsite and the natural organic matter, mostly consisting of humic substances, which find multiple applications in the agricultural industry. This study highlights that (1) the attachment mechanism of organic micro-pollutants to anion exchange resin occurs through electrostatic interaction and the subsequent transfer through ion exchange membranes is restricted by size exclusion; and (2) the complexation of trace metals compounds with the natural organic matter partly explains their removal by anion exchange. Complexes remain stable during treatment of the brine with electrodialysis.

Subject

Anion exchange
Electrodialysis
Humic substances
Metal traces
Organic micro-pollutants

To reference this document use:

http://resolver.tudelft.nl/uuid:cdffb456-55f9-4a2d-bf75-6b7a61e734b3

DOI

https://doi.org/10.1016/j.watres.2019.01.042

ISSN

0043-1354

Source

Water Research, 154, 34-44

Part of collection

Institutional Repository