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
收藏
页码：551 / 560
页数：10
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