摘要：比较研究了骨炭和羟基磷灰石对Cu2+、Zn2+、Cd2+以及Pb2+的吸附、解吸规律及吸附动力学行为。结果表明，骨炭对Cu2+、Zn2+、Cd2+以及Pb2+的吸附量均随其初始浓度的增加而增加，四种重金属吸附等温线均与Freundlich和Henry方程具有较好的拟合性，且骨炭对Cu2+、Zn2+、Cd2+以及Pb2+具有较强的吸附固定能力，而羟基磷灰石对Cu2+的吸附效果很差，对其他三种金属吸附效果均没有骨炭优异。随着金属离子的初始浓度增大，两种吸附剂对Zn2+、Cd2+以及Pb2+的解吸率均逐渐减小，且以骨炭对其解吸率相对最小。吸附动力学方面，骨炭对Cu2+、Zn2+、Cd2+以及Pb2+的吸附速率相对较高，而羟基磷灰石的吸附速率始终略低于骨炭。48027

Abstract：In this Paper, Cu2+, Zn2+ ,Cd2+ and Pb2+ adsorption behaviour on different adsorbent (Bone char and Hydroxyapatite) were comparatively studied. The results showed that the adsorption capacity of these four kinds of heavy metal ions by Bone char was better than hydroxyapatite and increases with the initial concentration increasing. The adsorption isotherm of those heavy metal ions could also be fitted well by Freundlich equation and Henry equation. In the other hand, the adsorption capacity of Cu2+ by hydroxyapatite was very poor and the other three ions were no better than bone char as well. As the initial concentration of heavy metal ions increased, the desorption rate of Zn2+, Cd2+ and Pb2+ by two adsorbents were both decreased, especially for Bone char. In terms of adsorption kinetics, the adsorption rate of Cu2+, Zn2+, Cd2+ and Pb2+ on Bone char was very high, which was better than hydroxyapatite.

毕业论文关键词：吸附 骨炭 羟基磷灰石（HAP） 重金属

Keyword: Adsorption,Bone char,Hydroxyapatite(HAP),Heavey Metals

目    录

1  引言 5

   2  材料与方法 6

2.1  供试材料 6

2.2  研究方法 6

2.2.1 吸附剂对重金属吸附试验方法 6

     2.2.1.1吸附-解吸实验 6

     2.2.1.2吸附量测定 6

     2.2.1.3固相解吸量测定 6

2.2.2 吸附动力学实验 6

     2.2.2.1 Cu、Zn吸附动力学 6

     2.2.2.1 Pb、Cd吸附动力学 7

2.2.3 红外光谱分析吸附剂的表征实验 7

3  计算及数据处理方法 7

2.1  计算方法 7

    2.2  数据处理方法 7

4  结果与分析 8

4.1 不同吸附剂对Cu2+、Zn2+、Pb2+、Cd2+的等温吸附特性 8

        4.1.1对Cu2+的吸附等温特性 8

4.1.2对Zn2+的吸附等温特性 9

4.1.3对Pb2+的吸附等温特性 11

4.1.4对Cd2+的吸附等温特性 12

    4.2 不同吸附剂对Cu2+、Zn2+、Pb2+及Cd2+的解吸特性及其与吸附作用的关系 13

        4.2.1不同吸附剂对Cu2+、Zn2+的解吸特性及其与吸附作用的关系