玻璃轻石吸附铜离子的研究

Study on the Adsorption of Copper Ion by the Glass Pumice

主要研究了玻璃轻石对水中铜离子的吸附行为,研究了吸附时间、玻璃轻石的用量、pH值和Cu^2+的初始浓度等因素对吸附性能的影响。吸附实验结果显示,20 min吸附反应可达平衡;含Cu^2+水体中pH值>4时吸附效果最好。水样中铜离子的浓度增加,Cu^2+的吸附率略有下降,吸附过程能更好地用Freundlich吸附等温方程描述。

The adsorption behavior of Cu^2+from aqueous solution on glass pumice was investigated in this paper.The adsorption time,amount of glass pumice,pH value,the initial concentration of Cu^2+and other factors on the adsorption performance were also discussed.The adsorption experiment showed that the adsorption reaction could reach equilibrium at 20 min.When the aqueous solution contains Cu^2+and pH>4,the adsorption effect reaches its peak.The adsorption rate of Cu^2+decreased slightly when Cu^2+concentration increased.The absorption behavior of Cu^2+could be well imitated by the Freundlich isothermal equation.