Open AccessThe effect of ion exchange membranes on the bipolar membrane electrodialysis of ammonium chloride wastewater
Author(s) -
Yongdong Wang,
Wei Li,
Shaoyuan Shi,
Xiaohong Wu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/675/1/012219
Subject(s) - membrane , electrodialysis , chemistry , ammonium chloride , wastewater , ion exchange , ion , ammonium , ion exchange membranes , inorganic chemistry , chromatography , organic chemistry , waste management , biochemistry , engineering
The different bipolar membranes and their configurations with monopolar ion exchange membranes from different manufacturers such as FAB-FBM-FKB, AHA-(BP-1E)- CMB, and JAM-(BMP-1)-JCM are used in the bipolar membrane electrodialysis (BMED) of simulated NH 4 Cl wastewater to examine the effect of membrane properties on the generation of HCl and NH 3 ∙H 2 O. The results indicated that the configuration of AHA-(BP-1E)-CMB presented the promising performance among all the ion exchange membranes according to the generated acid and base concentration. And the configuration of FAB-FBM-FKB presented the expected performance on the membrane stack voltage, energy consumption, current efficiency of the BMED system. The stability of different ion exchange membranes in strong acid and base solution were investigated further by the analyses of SEM, contact angle and membrane resistance. It was found that the membranes AHA and FKB had better chemical stability than other membranes.