CAJ | 학술논문

水热合成层间阴离子为CO32-的Mg-Al型水滑石并经过焙烧处理，测试了焙烧前后水滑石对水溶液中VO3-的吸附行为.结果表明：焙烧后的水滑石C-HT对VO3-在35℃时最大吸附量可达95.21 mg/g，远远高于焙烧前水滑石最大吸附容量（31.59 mg/g），可见焙烧处理对水滑石的吸附性能影响显著.VO3-在C-HT上的吸附6 h内可达到吸附平衡，吸附后的C-HT采用碳酸钠溶液脱附可再生，脱附效率达97%.C-HT对水中VO3-的吸附能力主要在于VO3-与层板间填充的CO32-交换吸附.
수열합성층간음리자위CO32-적Mg-Al형수활석병경과배소처리，측시료배소전후수활석대수용액중VO3-적흡부행위.결과표명：배소후적수활석C-HT대VO3-재35℃시최대흡부량가체95.21 mg/g，원원고우배소전수활석최대흡부용량（31.59 mg/g），가견배소처리대수활석적흡부성능영향현저.VO3-재C-HT상적흡부6 h내가체도흡부평형，흡부후적C-HT채용탄산납용액탈부가재생，탈부효솔체97%.C-HT대수중VO3-적흡부능력주요재우VO3-여층판간전충적CO32-교환흡부.
Mg-Al-CO32- hydrotalcite was prepared by hydrothermal method and then calcined. The adsorption behaviors of hydrotalcite for VO3-in the solution before and after calcination were investigated. The results were summarized as follows: The maximum adsorption capacity of hydrotalcite C-HT after calcination for VO 3- is 95.21 mg/g at 35℃, much lager than that of hydrotalcite before calcination which is 31.59 mg/g. It shows signifi-cant influence of calcination on the adsorption capacity of hydrotalcite. The kinetics of VO 3-adsorption onto C-HT shows that the time until equilibrium is 6 hour, and C-HT after adsorption is reproducible by desorption of sodium carbonate solution with desorption efficiency of up to 97%. The adsorption capacity of C-HT for VO 3-in the solution is mainly due to the exchange adsorption of VO 3-and the CO32-filling between the layers.