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

被引：43

作者：

Cheng, H ^{[1
]}

Scott, K ^{[1
]}

Christensen, PA ^{[1
]}

机构：

[1] Newcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2005年 / 35卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

efficiency; electrolysis; nitrate reduction; PdRh cathode; solid polymer electrolyte reactor;

D O I：

10.1007/s10800-005-1519-9

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：551 / 560

页数：10

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