废FCC催化剂对水中铅离子的连续吸附及脱附  

The Successive Adsorption and Desorptionof Lead Ion onto Waste FCC Catalyst

作　　者：唐玉斌[1] 何军[2] 陈芳艳[1] 张洪林[1] 

机构地区：[1]抚顺石油学院 [2]乌鲁木齐石化总厂炼油厂

出　　处：《石油化工环境保护》1999年第2期42-45,共4页Environment Protection in Petrochemical Industry

摘　　要：通过测定吸附等温线，考察了Ｐｂ２＋在废ＦＣＣ（流化催化裂化）催化剂上的吸附性能及规律，结果表明，Ｐｂ２＋在废ＦＣＣ催化剂上的吸附规律可用Ｌａｎｇｍｕｉｒ和Ｆｒｕｎｄｌｉｃｈ模式描述，吸附呈单分子层形式且容易进行。又通过填充床吸附试验，对Ｐｂ２＋的连续吸附及脱附情形作了考察。结果表明，在温度为１５℃、ｐＨ为５．１３、过柱速率为３．０ｍＬ／ｍｉｎ、径高比为２．２５．０条件下，吸附柱具备适宜的生产周期，连续吸附操作可行，柱效率可达７５．９％；在温度为１５℃、采用２ｍｏｌ／Ｌ稀盐酸作脱附剂，过柱速率为５．０ｍＬ／ｍｉｎ的条件下，吸附剂易于脱附再生，脱附效率可达７８．１％The performance and the law for adsorption of lead ion onto waste FCC catalyst were inspected by adsorption equilibrium test. The results showed that the adsorption is classified to monomolecular layer type, which can be described by Langmuir and Freundlich models. The adsorption is easily achieved. In addition, the successive adsorption and desorption were also inspected by packing column test.The results indicated that the column's production period is proper, the successive adsorption is feasible, the column efficiency can reach 75.9% when the temperature is 15,pH value is 5.13, rate of flow is 3.0mL/min, and the ratio of diameter/height is 2.25.0. The adsorbent is easily regenerated by 2mol/L hydrochloric acid and the desorption efficiency can reach 78.1% when the temperature is 15, and the rate of flow is 5.0mL/min.

关 键 词：废FCC催化剂 铅离子 连续吸附 脱附 废水处理 

分 类 号：X740.3[环境科学与工程—环境工程] X703