CAJ | 학술논문

以钠基膨润土作为原料，通过添加铝盐为改性剂制得了一种新型高效绿液除硅剂———铝盐改性膨润土（ALMB），并全面研究了ALMB对绿液中硅酸盐的吸附动力学行为．结果表明，ALMB可以有效地吸附硅酸盐，在10 min内即可完成除硅反应，且对绿液pH、总碱量等的影响较小，其最佳ALMB用量为20 g／L ，此时的除硅率可达79．3％．通过ALMB对绿液（硅含量分别为1g／L、2g／L、3g／L、4g／L）的吸附动力学研究，可知其吸附过程符合二级动力学模型，是物理吸附和化学吸附的共同作用．在2g／L硅浓度下的动力学模型中，其相关参数最大（R2＝0．99978），可得出最大吸附量为101．8330 mg／g ，与实验室中得出的最大吸附量100．5833 m g／g相符．
이납기팽윤토작위원료，통과첨가려염위개성제제득료일충신형고효록액제규제———려염개성팽윤토（ALMB），병전면연구료ALMB대록액중규산염적흡부동역학행위．결과표명，ALMB가이유효지흡부규산염，재10 min내즉가완성제규반응，차대록액pH、총감량등적영향교소，기최가ALMB용량위20 g／L ，차시적제규솔가체79．3％．통과ALMB대록액（규함량분별위1g／L、2g／L、3g／L、4g／L）적흡부동역학연구，가지기흡부과정부합이급동역학모형，시물리흡부화화학흡부적공동작용．재2g／L규농도하적동역학모형중，기상관삼수최대（R2＝0．99978），가득출최대흡부량위101．8330 mg／g ，여실험실중득출적최대흡부량100．5833 m g／g상부．
A variety of novel and efficient silicate‐aluminum salts modified bentonite(ALMB) removal agent was prepared by adding the modifier of aluminum salts as the Na‐bentonite used as the raw material .And the kinetics of adsorption of silicate in green liquor by ALMB was studied .The results indicate that the ALMB can adsorb silicate effectively .The desilica‐tion reaction could be accomplished in 10 min ,and had a little effect on the green liquor pH and total alkali content .The optimum ALMB dosage was 20 g/L ,and the desilication rate could exceed 79 .3% .Study on the adsorption kinetics of green liquid (1 g/L ,2 g/L ,3 g/L ,4 g/L) by ALMB ,the kinetic mode of silicate adsorption were indicated that the whole adsorp‐tion process was suitable to the pseudo‐second‐order kinetic model embracing physical and chemical adsorption .The parameters of the kinetic model of 2 g/L silicate concentration were the largest (R2 =0 .999 78) ,the maximum adsorption capacity was 101 .833 0 mg/g coinci‐ding with the experimental adsorption capacity of 100 .583 3 mg/g .