Development of Adsorptive Membranes for Selective Removal of Contaminants in Water

Priyalatha M. Kirisenage, Syed M. Zulqarnain, Jordan L. Myers, Bradley D. Fahlman, Anja Mueller, Itzel Marquez

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The presence of arsenic and ammonia in ground and surface waters has resulted in severe adverse effects to human health and the environment. Removal technologies for these contaminants include adsorption and membrane processes. However, materials with high selectivity and pressure stability still need to be developed. In this work, adsorbents and adsorptive membranes were prepared using nanostructured graphitic carbon nitride decorated with molecularly imprinted acrylate polymers templated for arsenate and ammonia. The developed adsorbent removed arsenate at a capacity and selectivity similar to commercial ion-exchange resins. Ammonia was removed at higher capacity than commercial ion exchange resins, but the adsorbent showed lower selectivity. Additionally, the prepared membranes removed more arsenate and ammonia than non-imprinted controls, even in competition with abundant ions in water. Further optimization is required to improve pressure stability and selectivity.

Original languageEnglish
Article number3146
JournalPolymers
Volume14
Issue number15
DOIs
StatePublished - Aug 2022

Keywords

  • adsorbents
  • adsorptive membranes
  • ammonia
  • arsenate
  • graphitic carbon nitride
  • imprinting polymerization
  • water treatment

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