CAJ | 학술논문

以钙基膨润土为原料,通过柱撑改性制得两种不同的改性膨润土-铁柱撑膨润土和铝柱撑膨润土。两种膨润土分别应用于溴离子的去除当中。结果表明,两种鹏润如对溴离子的去除效果相差不大。以投加量为0.5 g为例,反应进行20 min时,溴离子的去除率已达到平衡时的90%以上。随着温度由10℃上升到45℃,铝柱撑膨润土和铁柱撑膨润土对溴离子的去除率分别由86.5%和91.7%下降到56.1%和49.6%。随着pH的升高,溴离子的去除率要显著的降低,实验条件下,选取pH 6时,效果最佳。通过吸附动力学和等温线的分析,可知改性膨润土对溴离子的吸附属于自发的放热的过程。
이개기팽윤토위원료,통과주탱개성제득량충불동적개성팽윤토-철주탱팽윤토화려주탱팽윤토。량충팽윤토분별응용우추리자적거제당중。결과표명,량충붕윤여대추리자적거제효과상차불대。이투가량위0.5 g위례,반응진행20 min시,추리자적거제솔이체도평형시적90%이상。수착온도유10℃상승도45℃,려주탱팽윤토화철주탱팽윤토대추리자적거제솔분별유86.5%화91.7%하강도56.1%화49.6%。수착pH적승고,추리자적거제솔요현저적강저,실험조건하,선취pH 6시,효과최가。통과흡부동역학화등온선적분석,가지개성팽윤토대추리자적흡부속우자발적방열적과정。
Using the calcium-base-bentonite as raw material,through the pillared process,two different modification bentonitemade-iron and aluminum pillared bentonite were prepared.The pillared bentonites were applied in the removal of bromine.The results showed that these two kinds of pillared bentonite were both efficiency for bromine ion removal.The removal rate reached more than 90% after 20 min adsorption by 0.5 g pillared bentonite.With the temperature rised from 10 ℃ to 45 ℃,the removal rate of bromine by aluminum pillared bentonite and iron pillared bentonite dropped 86.5% and 91.7% to 56.1% and 49.6%,respectively.With the rising of pH,it showed a significant reduction of bromine removal.According to the experimental conditions,the pH 6 was the best choice.Through the analysis of the adsorption dynamics and isotherm,it can be seen that the adsorption of bromine by pillared bentonite was a spontaneous and exothermic process.