本文以神府煤为基体，通过浸渍和接枝方法制备了两种具有螯合功能的煤基螯合吸附剂。利用FTIR、SEM对煤基螯合吸附剂进行结构表征，通过静态试验研究所制备螯合吸附剂对水溶液中的Cu2+、Zn2+、Cd2+的螯合吸附性能和机理。主要研究内容如下： 1、研究不同粒度煤粉与吸附性能的关系。结果表明，不同粒度煤粉对Ni2+的吸附符合二级吸附动力学。不同粒度煤粉对Ni2+的吸附符合Freundlich或Langmuir吸附等温式。随着温度的升高，粒径为0.075mm的煤粉对Ni2+的吸附量下降，热力学参数表明，吸附过程为自发过程。 2、以聚丙烯酰胺、CS2和NaOH在合适配比的条件下合成螯合剂，进一步与神府煤反应制备出煤基螯合吸附剂PANRC。考察了反应时间、反应温度、物料比等因素对复合螯合吸附剂性能的影响，确定最佳了最佳工艺。采用FTIR和SEM对其化学结构和孔结构进行分析表征。 3、以γ-氨丙基三甲基硅烷、丙烯酸、N,N-二甲基甲酰胺(DMF)和盐酸羟胺在合适配比的条件下制备出煤基螯合吸附剂APKC。研究了反应时间、反应温度、物料比等对螯合吸附剂性能的影响，确定了最佳制备条件。通过FTIR和SEM对其化学结构和孔结构进行分析表征。 4、煤基螯合吸附剂PANRC和APKC的吸附性能和机理研究。动力学研究表明，PANRC和APKC对水溶液中Cu2+、Zn2+、Cd2+的吸附符合二级吸附动力学。煤基螯合吸附剂APKC对水溶液中Zn2+、Cd2+的吸附性能优于PANRC，而对Cu2+的吸附性能PANRC>APKC。煤基螯合吸附剂APKC对Cu2+、Zn2+的吸附符合Freundlich吸附等温式。而PANRC对Cd2+的吸附符合Langmuir吸附等温式。煤基螯合吸附剂PANRC和APKC吸附Cu2+的热力学参数ΔH分别为-12.96和-6.8KJ•mol-1，负值说明吸附过程是一个放热过程。煤基螯合吸附剂具有良好的重复使用性能。

In this study, two kinds of adsorbent containing chelating functional groups were prepared. The physicochemical structures of them were elaborately characterized using FT-IR and were further morphologically characterized using SEM. The sorption capacities and mechanisms were investigated. (1) The kinetic studies showed that Ni2+ adsorption onto various size coal powders accords with the second-order model. The adsorption equilibrium of Ni2+ onto various size coal powders can be described in terms of the Freundlieh or Langmuir isotherm. Ni2+ adsorption capacity onto coal powders with diameter of 0.075mm decrease with increasing temperature. It displays better sorption capacities in acidic condition. (2) Considering coal powder as carrier, PAM、CS2 are added into NaOH solution to prepare PANRC. The different variables, such as reacting time, temperature, solvent and solvent ratios are studied. (3) Considering coal powder as carrier,γ-aminopropyltriethoxysilane, crylic acid, N，N-dimethyl formamide are added into Hydroxylamine hydrochloride solution to prepareAPKC. Reacting time, temperature and solvent ratios are studied to determine the optimum preparation process. (4) Cu2+、Zn2+、Cd2+ adsorption onto PANRC and APKC fits well with the second-order model. The sorption capacity of Zn2+、Cd2+ onto coal-based adsorbents follows the order: APKC >PANRC. When it comes to Cu2+, it follows the order: PANRC >APKC. Cu2+、Zn2+ adsorption onto APKC correspond to Freundlich model and Cd2+ adsorption onto PANRC is in line with Langmuir model. The standard heats of adsorption (ΔH) of Cu2+ onto PANR and APKC are calculated to be -12.96, -6.8KJ•mol-1 respectively, indicating the adsorptions are exothermic process. Desorption tests show that PANRC and APKC exhibit both excellent regeneration property.