Rapid removal of ammonium from domestic wastewater using polymer hydrogels

Cruz, Heidy, Luckman, Paul, Seviour, Thomas, Verstraete, Willy, Laycock, Bronwyn and Pikaar, Ilje (2018) Rapid removal of ammonium from domestic wastewater using polymer hydrogels. Scientific Reports, 8 1: 2912. doi:10.1038/s41598-018-21204-4

Author Cruz, Heidy
Luckman, Paul
Seviour, Thomas
Verstraete, Willy
Laycock, Bronwyn
Pikaar, Ilje
Title Rapid removal of ammonium from domestic wastewater using polymer hydrogels
Journal name Scientific Reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2018-02-13
Year available 2018
Sub-type Article (original research)
DOI 10.1038/s41598-018-21204-4
Open Access Status DOI
Volume 8
Issue 1
Start page 2912
Total pages 6
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Language eng
Abstract To date, technologies to recover ammonium from domestic wastewater from the mainstream have not found widespread application. This is largely due to the low ammonium concentrations in these wastewater streams. This paper reports on the use of polymer hydrogels for rapid sorption of ammonium from domestic wastewater coupled with efficient regeneration by mild acid washing. The sorption capacity of the hydrogel was 8.8-32.2 mg NH-N/g, which corresponds to removal efficiencies ranging from 68% to 80% NH-N, increasing proportionally with the initial ammonium concentration. It was, however, unaffected by changes in pH, as the sorption capacity remained constant from pH 5.0-8.0. Importantly, effective regeneration of the hydrogels under mildly acidic conditions (i.e. pH 4.0) was demonstrated with minimal loss in sorption performance following multiple sorption/desorption cycles. Overall, this study highlights the potential of low-cost polymer hydrogels for achieving mainstream ammonium recovery from domestic wastewater.
Keyword Natural Australian Zeolite
Nitrous-Oxide Emissions
Phosphate Removal
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

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Created: Wed, 21 Feb 2018, 11:06:59 EST