%0 Journal Article
%T Electrocatalytic Reduction of Nitrate from Drinking Water by Porous Titanium Loaded Pd-Cu Cathode<br>多孔钛板负载Pd-Cu阴极电催化还原饮用水中硝酸盐的研究
%A FAN Jing-hua
%A FAN Bin
%A LU Dao-qiang
%A QU Dan
%A LUAN Zhao-kun
%A <br>范经华
%A 范彬
%A 鹿道强
%A 曲丹
%A 栾兆坤
%J 环境科学
%D 2006
%I 
%X We investigated performances as well as influencing factors of electrocatalytic denitrification of a porous titanium loaded Pd-Cu (4:1) cathode, from drinking water. Up to 96.9% of NO3(-)-N may be reduced to N2 with electrocatalytic activity as 16.69 mg/ (g x h). The Nitrate reduction presented an apparent first order reaction at lower nitrate concentration, while a zero order reaction at higher nitrate concentration. Little nitrate reduction was observed when cell voltage (or current) was lower than 1.5 V (or 5 mA); the side reaction of ammonium production became noticeable if the cell voltage (or current) was higher than 4.2 V (or 30 mA). Both the activity and the selectivity were good at a neutral pH; at acidic pH, the activity increased while the selectivity decreased. Mass transfer in solution was found little effect on the reactions in the tests. Other anions such as ClO4-, HCO3-, Cl- did somewhat harms to NO3(-)-N removal with sequence of ClO4- < HCO3- < Cl-.
%K porous titanium
%K Pd-Cu alloy
%K electrocatalytic denitrification
%K drinking water<br>多孔钛
%K 钯铜合金
%K 电催化脱硝
%K 饮用水
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=3D926F115087E9EA&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=87EA718095CEFCE5&eid=7D34DED3F877BD2D&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=11