CAJ | 학술논문

研究了凹凸棒黏土对溶液中汞(Ⅱ)的吸附行为，考察了凹凸棒的细度溶液pH值、吸附时间、吸附温度等条件对凹凸棒吸附汞的吸附率的影响；分析凹凸棒对汞的吸附动力学和热力学行为。结果表明：凹凸棒石黏土对溶液中的汞离子具有较好的吸附，降低凹凸棒黏土细度有利于提高吸附率。温度在40?C左右，吸附时间40 min pH值7以上，吸附率可达90%以上，吸附容量454 mg/g 。吸附符合准二级动力学方程和Freundlich型吸附等温线，属于化学吸附。
연구료요철봉점토대용액중홍(Ⅱ)적흡부행위，고찰료요철봉적세도용액pH치、흡부시간、흡부온도등조건대요철봉흡부홍적흡부솔적영향；분석요철봉대홍적흡부동역학화열역학행위。결과표명：요철봉석점토대용액중적홍리자구유교호적흡부，강저요철봉점토세도유리우제고흡부솔。온도재40?C좌우，흡부시간40 min pH치7이상，흡부솔가체90%이상，흡부용량454 mg/g 。흡부부합준이급동역학방정화Freundlich형흡부등온선，속우화학흡부。
The adsorption of the attapulgite for mercury in aqueous was studied. Various factors affecting adsorption such as pH values, adsorption time, and adsorption temperature were investigated and the ad-sorption kinetics were also explored. The results show that attapulgite has absorbability for Hg(Ⅱ) aqueous, absorption rate was increased when decreasing the attapulgite particle size. And absorption rate exceeded 90% at the conditions of temperature about 40?C, time 40min, pH 7. Capacity of the absorption reached 454mg/g. The kinetics of adsorption followed pseudo-second-order model and the equilibrium data were well fitted to the Freundlich. The absorption was chemical absorption.