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本文研究了吸附条件对活性碳纤维SACF氧化还原吸附Ag+的影响。结果表明:Ag+初始浓度的提高,反应温度的升高均可提高SACF对Ag+的吸附量;Ag+的吸附量还强烈地依赖于溶液的pH值,用NaAC、HAC+NaAC或NH3·H2O调高Ag+溶液的pH,可有效地增加SACF对Ag+的吸附量;用NH3·H2O调节会出现一个最佳的pH值;通过增加SACF用量,Ag+的吸附率可达99%以上。这些影响因素均可通过能斯特(Nernst)方程来说明。高pH值下,Ag+吸附平衡时间要比低pH值下长。
In this paper, the adsorption conditions of activated carbon fiber SACF redox adsorption of Ag +. The results show that the increase of initial Ag + concentration and the increase of reaction temperature can increase the amount of Ag + adsorbed by SACF. The amount of Ag + adsorbed strongly depends on the pH value of the solution. The concentration of Ag + is increased with NaAC, HAC + NaAC or NH3 · H2O Of pH, which can effectively increase the amount of Ag + adsorbed by SACF. An optimal pH value can be obtained when adjusted with NH3 · H2O. The adsorption rate of Ag + can be over 99% by increasing the amount of SACF. These influencing factors can all be illustrated by the Nernst equation. At high pH, Ag + adsorption equilibrium time is longer than at low pH.