College of Biology and Environmental Engineering, Changsha University, Changsha 410003, China.
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
J Colloid Interface Sci. 2017 Nov 1;505:585-592. doi: 10.1016/j.jcis.2017.06.053. Epub 2017 Jun 19.
Three amino-modified hyper-cross-linked resins (HCP-M, HCP-E, and HCP-D) were synthesized, and they were evaluated for adsorption of p-chlorophenol from aqueous solution. The results indicated that the uploading amounts of the amino groups on the three resins followed an order of HCP-M<HCP-E<HCP-D, while their Brunauer-Emmett-Teller surface area had an opposite order. The three resins were efficient for adsorption of p-chlorophenol from aqueous solution and hydrogen bonding was the main driving force for the adsorption. The isosteric adsorption enthalpy at zero fractional loading had an order of HCP-M (-44.92kJ/mol)<HCP-E (-57.12kJ/mol)<HCP-D (-61.53kJ/mol). At the initial concentration of 502.1mg/L and the flow rate of 68mL/h, the saturated dynamic capacities of HCP-M, HCP-E, and HCP-D were 388.1, 394.3, and 318.1mg/g dry resin, respectively, and these resins could be completely regenerated and repeatedly used.
三种氨基改性的超交联树脂（HCP-M、HCP-E 和 HCP-D）被合成，并用于从水溶液中吸附对氯苯酚。结果表明，三种树脂上氨基的载量顺序为 HCP-M<HCP-E<HCP-D，而它们的 Brunauer-Emmett-Teller 比表面积则相反。三种树脂对水溶液中的对氯苯酚吸附效果显著，氢键是吸附的主要驱动力。在零分数负载时的等吸附焓的顺序为 HCP-M（-44.92kJ/mol）<HCP-E（-57.12kJ/mol）<HCP-D（-61.53kJ/mol）。在初始浓度为 502.1mg/L 和流速为 68mL/h 的条件下，HCP-M、HCP-E 和 HCP-D 的饱和动态容量分别为 388.1、394.3 和 318.1mg/g 干树脂，这些树脂可以完全再生并重复使用。
