Electrochemical oxidation of humic acid at the antimony- and nickel-doped tin oxide electrode

这个工作调查了腐殖的酸的降级(哈) 在由有做锑、做镍的锡氧化物电极的电气化学的氧化的水的答案(Ni-Sb-SnO < 潜水艇 class= “ a-plus-plus ” > 2 /Ti 电极) 作为阳极。起始的集中哈从 3 ～ 9

This work investigated the degradation of humic acid （HA） in aqueous solution by electrochemical oxidation with Antimony- and Nickel-doped Tin oxide electrode （Ni-Sb-SnO2/Ti electrode） as the anode. Initial concentrations of HA ranged from 3 to 9 mg-L 1. Under such a concentration scope, the degradation of HA was a mass transfer controlled process. Degradation rate increased with the increase of HA initial concentration. Test on the effect of tert-butanol revealed that · OH played an important role in the oxidation of HA. The absence of cation Ca2＋ was beneficial to HA degradation, which suggested that both indirect and direct electrolyze happened during the whole electrochemical oxidation process. Alkaly （pH = 12） and neutral （pH = 7） conditions were benefical to HA degradation.