CAJ | 학술논문

以疏水型SiO2气凝胶为吸附剂，研究其对Cr(VI)的吸附性能。考查了pH、吸附时间、气凝胶用量对Cr(VI)吸附率的影响，探索了吸附Cr(VI)的动力学特性。实验结果表明，在pH=2、气凝胶的量m=0．4 g、反应时间t=75 min时，疏水型SiO2气凝胶对Cr(VI)的去除率较高；疏水型SiO2气凝胶对Cr(VI)吸附行为更符合准二级动力学模型；使用乙醇作为脱附剂，脱附效果较好。
이소수형SiO2기응효위흡부제，연구기대Cr(VI)적흡부성능。고사료pH、흡부시간、기응효용량대Cr(VI)흡부솔적영향，탐색료흡부Cr(VI)적동역학특성。실험결과표명，재pH=2、기응효적량m=0．4 g、반응시간t=75 min시，소수형SiO2기응효대Cr(VI)적거제솔교고；소수형SiO2기응효대Cr(VI)흡부행위경부합준이급동역학모형；사용을순작위탈부제，탈부효과교호。
The hydrophobic SiO2 aerogels were used as carrier to adsorb Cr(VI) from aqueous solution. The effect of pH value, reaction time, dosage of aerogel on the adsorption rate of Cr (VI) were researched. The kinetics model of the adsorption behavior was also explored. The results indicated that the proper adsorption conditions of Hydrophobic SiO2 aerogels were optiumized: pH was 2, hydrophobic SiO2 aerogel dosage was 0.4 g, reaction time was 75 min. The adsorption behavior of Cr (VI) by hydrophobic SiO2 aerogels followed pseudo-second order kinetics models well. With ethanol as the proper desorption agent.