CAJ | 학술논문

利用粉煤灰合成Linde type F(K)沸石吸附Cu2+、Ni2+、Pb2+、Zn2+混合重金属离子，研究初始浓度对沸石竞争吸附四种重金属离子的影响，探讨沸石吸附混合重金属离子的吸附动力学。结果表明，重金属离子的竞争吸附顺序、沸石对重金属离子的吸附量以及去除率均受初始浓度的影响显著。初始浓度为50 mg/L与100 mg/L时，沸石对Pb2+与Cu2+的竞争吸附能力较强；而初始浓度提升至200 mg/L与300 mg/L时，沸石对Zn2+与Pb2+的竞争吸附能力较强，吸附量大小顺序为Zn2+、Pb2+、Ni2+、Cu2+。除Cu2+以外，沸石对Pb2+、Ni2+、Zn2+三种重金属离子的平衡吸附量均随初始浓度的上升而提高。此外，沸石对Cu2+、Ni2+、Pb2+、Zn2+四种重金属离子的吸附行为均符合准二级动力学方程。
이용분매회합성Linde type F(K)비석흡부Cu2+、Ni2+、Pb2+、Zn2+혼합중금속리자，연구초시농도대비석경쟁흡부사충중금속리자적영향，탐토비석흡부혼합중금속리자적흡부동역학。결과표명，중금속리자적경쟁흡부순서、비석대중금속리자적흡부량이급거제솔균수초시농도적영향현저。초시농도위50 mg/L여100 mg/L시，비석대Pb2+여Cu2+적경쟁흡부능력교강；이초시농도제승지200 mg/L여300 mg/L시，비석대Zn2+여Pb2+적경쟁흡부능력교강，흡부량대소순서위Zn2+、Pb2+、Ni2+、Cu2+。제Cu2+이외，비석대Pb2+、Ni2+、Zn2+삼충중금속리자적평형흡부량균수초시농도적상승이제고。차외，비석대Cu2+、Ni2+、Pb2+、Zn2+사충중금속리자적흡부행위균부합준이급동역학방정。
The experiment was conducted to examine the adsorption of mixed heavy metals Cu2+, Ni2+, Pb2+ and Zn2+ through synthesizing Linde type F(K) zeolite from coal fly ash. The initial concentration was investigated to study the competitive ad-sorption of mixed heavy metal ions. The equation of adsorption kinetics was established in the test. The results showed that the initial concentration had a significant effect on the sequence of competitive adsorption, the adsorption capacity and the re-moval rate of mixed heavy metal ions. When the initial concentration was 50 mg/L and 100 mg/L, the selective adsorption a-bility of Pb2+ and Cu2+ by synthetic zeolite was better. However, the selective adsorption ability of Zn2+ and Pb2+ became greater when the initial concentration increased to 200 mg/L and 300 mg/L. The order of competitive adsorption for heavy metal ions was Zn2+>Pb2+>Ni2+>Cu2+. The equilibrium adsorption capacity of Pb2+, Ni2+ and Zn2+ was improved with the initial concentration of mixed heavy metal ions except Cu2+. In addition, the reaction of adsorption on synthetic zeolite to Cu2+, Ni2+, Pb2+ and Zn2+ matched the model of pseudo-second class reaction kinetics.