FCC废催化剂对水中铜(Ⅱ)的吸附

利用FCC（流化催化裂化）废催化剂吸附去除废水中的Cu²⁺，考察了振荡时间、温度和pH值对Cu²⁺在FCC废催化剂上吸附效果的影响，探讨了吸附机理，并对连续吸附及吸附剂可再生性作了考察。结果表明，振荡时间、温度及pH值对Cu²⁺的吸附效果影响较大．Cu²⁺在FCC废催化剂上的吸附符合Freundlich和Langmuir模式，吸附呈单分子层形式且易进行，吸附机理是靠静电引力发生交换吸附及化学键力形成羟基络合物而吸附。结果还表明，Cu²⁺的连续吸附操作可行，吸附剂易于再生。

Adsorption of Cu2+ onto waste FCC catalyst

The adsorption of waste FCC(Fluidized Catalytic Cracking) catalyst was used to remove Cu2 in the wastewater.The effect of shaking time,temperature and PH value on the adsorption of Cu2 onto waste FCC catalyst was in.spected. The mechanism for the adsorption was studied. The column test and the regeneration of the adsorbent were in-spected the. The results indicate that shaking time, temperature and PH value are the main factors to affect adsorption ofCu2 . The adsorption of Cu2 onto waste FCC catalyst is classified to mono-molecular type, which can be well describedby Freundlich and Langmuir models.Cu2 is easy to be adsorbed by the adsorbent. The mechanism for the adsorption is:Cu2 is adsorbed by cation exchange or the formation of hydroxo complex. The successive operation for adsorption ofCu2 is feasible. The adsorbent is easy to be regenerated.