Experimental Evaluation of Anion Exchange Membranes for the Desalination of (Waste) Water Produced after Polymer-Flooding

Membranes

Harry Bruning¹  Huub Rijnaarts¹  HarrisonL. Nabaala²  JanW. Post²  PaulinaA. Sosa-Fernández² 

[1] Department of Environmental Technology, Wageningen University, P.O. Box 8129, 6700EV Wageningen, The Netherlands;European Centre of Excellence for Sustainable Water Technology, Wetsus, P.O. Box 1113, 8911CC Leeuwarden, The Netherlands;

关键词: anion-exchange membranes;    produced water;    electrodialysis;   

DOI  :  10.3390/membranes10110352

来源: DOAJ

【 摘 要 】

Electrodialysis (ED) has been recently proposed to desalinate polymer-flooding produced water (PFPW), a byproduct stream from the oil and gas industry rich in charged polymers. However, process performance is limited by fouling occurring on the ion-exchange membranes, particularly on the anionic ones (AEMs). Thus, this study aimed to correlate the properties of different AEMs with their performance while desalinating PFPW, ultimately evaluating their significance when fouling is to be minimized and operation improved. Six stacks containing different homogeneous and commercially available AEMs were employed to desalinate synthetic PFPW during 8-days ED experiments operated in reversal mode. AEMs recovered from the stacks were analyzed in terms of water uptake, ion-exchange capacity, permselectivity, and area resistance, and compared with virgin AEMs. Relatively small changes were measured for most of the parameters evaluated. For most AEMs, the water uptake and resistance increased, while the ion-exchange capacity (IEC) and permselectivity decreased during operation. Ultimately, AEMs with high area resistance were linked to the fast development of limiting current conditions in the stack, so this property turned out to be the most relevant when desalinating PFPW.

【 授权许可】

Unknown