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研究多壁碳纳米管(MWNTs)对水中有机物间苯二酚的吸附。分别讨论了不同的吸附参数(如温度、时间、pH)条件下,碳纳米管对间苯二酚吸附量的变化情况,并采用Langmuir和Freundlich模型对MWNTs的吸附等温线进行拟合。结果表明:MWNTs的吸附平衡时间为1h;MWNTs吸附是一个自发的放热过程,低温对其吸附有利;当溶液的pH值在4附近时,MWNTs对间苯二酚的吸附量达到最大;MWNTs对间苯二酚的吸附符合Freundlich和Langmuir等温模型。
Study on the Adsorption of Resorcinol to Organic Compounds in Water by Multi-walled Carbon Nanotubes (MWNTs). The adsorption capacity of resorcinol to carbon nanotubes under different adsorption parameters (such as temperature, time and pH) was discussed respectively. The adsorption isotherms of MWNTs were fitted by Langmuir and Freundlich models. The results showed that the adsorption equilibrium time of MWNTs was 1h. The adsorption of MWNTs was a spontaneous exothermic process, which was beneficial to the adsorption of MWNTs. When the pH of the solution was around 4, the MWNTs adsorbed resorcinol to the maximum. The adsorption of resorcinol conforms to Freundlich and Langmuir isothermal models.