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Application of a solid polymer electrolyte reactor to remove nitrate ions from wastewater

Lookup NU author(s): Dr Hua Cheng, Emeritus Professor Keith Scott, Professor Paul ChristensenORCiD

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Abstract

The application of a zero gap solid polymer electrolyte (ZGSPE) reactor to deminealise nitrate ions in aqueous wastewater is described. The following performance data for the reduction of a simulated alkaline solution with 16.1 mM nitrate ions under galvanostatic operation were achieved: percentage of nitrate removal up to 100% rates of nitrate removal up to 0.057 mol cm-2 h-1 space-time yields up to 5.4 kg m-3 h-1 current efficiencies up to 24.5% and energy consumption between 40.1 and 63.3 kW h kg-1. The beneficial effects of higher temperatures and nitrate ion concentrations and using a suitable electrolyte flow rate on the activity selectivity and efficiency is reported. PdRh1.5/Ti mini-mesh electrode used in the study was stable after a cumulative use of 1000 h. © Springer 2005.

Publication metadata

Author(s): Cheng H, Scott K, Christensen PA

Publication type: Article

Publication status: Published

Journal: Journal of Applied Electrochemistry

Year: 2005

Volume: 35

Issue: 6

Pages: 551-560

Print publication date: 01/06/2005

ISSN (print): 0021-891X

ISSN (electronic): 1572-8838

Publisher: Springer

URL: http://dx.doi.org/10.1007/s10800-005-1519-9

DOI: 10.1007/s10800-005-1519-9

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