Enhanced phosphate anion flux through single-ion, reverse-selective mixed-matrix cation exchange membrane

Xinyi Wang; Minhao Xiao; Sungsoon Kim; Jeffrey Zhang; Minju Cha; Anya Dickinson-Cove; Fan Yang; Kenji Lam; Sungju Im; Ziwei Hou; Jishan Wu; Zhiyong Jason Ren; Christos T. Maravelias; Eric M.V. Hoek; David Jassby

Journal of Membrane Science Letters (Dec 2024)

Enhanced phosphate anion flux through single-ion, reverse-selective mixed-matrix cation exchange membrane

Xinyi Wang,
Minhao Xiao,
Sungsoon Kim,
Jeffrey Zhang,
Minju Cha,
Anya Dickinson-Cove,
Fan Yang,
Kenji Lam,
Sungju Im,
Ziwei Hou,
Jishan Wu,
Zhiyong Jason Ren,
Christos T. Maravelias,
Eric M.V. Hoek,
David Jassby

Affiliations

Xinyi Wang: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA
Minhao Xiao: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA
Sungsoon Kim: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA
Jeffrey Zhang: University of California, Los Angeles (UCLA), Department of Mechanical Engineering, Los Angeles, CA, 90095, USA
Minju Cha: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA
Anya Dickinson-Cove: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA
Fan Yang: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA
Kenji Lam: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA
Sungju Im: Gyeongsang National University, Department of Environmental Engineering, Jinju 52725, South Korea
Ziwei Hou: NAC, Inc, Los Angeles, CA, USA
Jishan Wu: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA
Zhiyong Jason Ren: Princeton University, Department of Chemical and Biological Engineering and Andlinger Center for Energy and the Environment, NJ 08544, USA
Christos T. Maravelias: Princeton University, Department of Civil and Environmental Engineering and Andlinger Center for Energy and the Environment, Princeton, NJ 08544, USA
Eric M.V. Hoek: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA; Lawrence Berkeley National Lab, Energy System & Distributed Resources Division, Berkeley, CA, 94720, USA; Corresponding authors at: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA.
David Jassby: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA; Corresponding authors at: University of California, Los Angeles (UCLA), Department of Civil & Environmental Engineering, Los Angeles, CA, 90095, USA.

Journal volume & issue: Vol. 4, no. 2
p. 100086

Abstract

Read online

Phosphate recovery from wastewater is vital for both environmental sustainability and resource conservation, offering the dual benefit of reducing phosphate pollution while providing a valuable source of this essential nutrient. We previously reported an approach for synthesizing hydrous manganese oxide (HMO) nanoparticles within a polymeric cation-exchange membrane (CEM) to achieve a phosphate-selective mixed-matrix membrane (PhSMMM); however, the phosphate flux was lower than desired. Herein, we demonstrate a next-generation PhSMMM membrane with enhanced phosphate flux and selectivity. Experimental results confirm the successful incorporation of up to 28 wt% HMO nanoparticles into the polymeric CEM. The new PhSMMM exhibits a phosphate flux of 1.57 mmol∙m–2.hr–1 (an 8.5X enhancement), with selectivity over chloride, nitrate, and sulfate ions of 9, 11, and 104, respectively. This significant enhancement in phosphate flux marks a promising advancement in a sustainable solution for phosphate removal and recovery from wastewater.

Published in Journal of Membrane Science Letters

ISSN: 2772-4212 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/journal-of-membrane-science-letters

About the journal

Abstract

Keywords