论文部分内容阅读
采用以石墨板为电极的简易极板电吸附法模拟去除地下水中的As(III),考察了离子强度、初始浓度、极板间距和电压对As(III)去除效果的影响及电极的循环使用性能.结果表明,以0.1 mol/L Na Cl为电解质,极板间距为3 cm、电压为2.5 V、60min时对1 mg/L As(III)的吸附率达99.4%,达到了国家饮用水卫生标准.通过正负极反接脱附,电极在8次循环中对As(III)的吸附率为98.4%~99.2%,再生后电极仍具有很好的吸附性能.
The simple plate electrochemical adsorption method with graphite plate as electrode was used to simulate the removal of As (III) in groundwater. The influence of ionic strength, initial concentration, plate spacing and voltage on the removal of As (III) The results showed that the adsorption rate of As (III) to 1 mg / L As (III) reached 99.4% with 0.1 mol / L NaCl as electrolyte, with a plate spacing of 3 cm and a voltage of 2.5 V for 60 min, reaching the national drinking water Hygienic standard.The adsorption rate of As (III) to the electrode was 98.4% ~ 99.2% in eight cycles through the positive and negative reversed connection, and the electrode still had good adsorption performance after regeneration.