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Updated: Mar 29, 2026

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand
Published on: September 8, 2016
Efficient extraction of sulfate from water using a Zr-metal-organic framework
Ashlee J Howarth1, Timothy C Wang1, Salih S Al-Juaid2
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. j-hupp@northwestern.edu o-farha@northwestern.edu.
Abstract:
A Zr-based MOF, NU-1000, comprised of Zr6 nodes and tetratopic pyrene-containing linkers is studied for adsorption and extraction of SO4(2-) from water. The adsorption capacity and uptake time of SO4(2-) in NU-1000 is determined at varying concentrations to give an overall maximum adsorption capacity of 56 mg SO4(2-) per g of MOF. Selective adsorption of SO4(2-) by NU-1000 in the presence of other anions as well as regeneration of the sorbent is also explored.

