RADIATION PROTECTION ›› 2020, Vol. 40 ›› Issue (5): 427-434.

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Study on adsorption properties of aluminite colloid for Cs+

ZHAO Yuting1, PAN Yuelong2, LIU Yu2, LENG Yangchun1   

  1. 1. School of National Defense Technology, Southwest University of Science and Technology, Sichuan Mianyang 621010;
    2. China Guangdong Nuclear Power Engineering Co. Ltd., Guangdong Shenzhen 518000
  • Received:2020-03-24 Published:2020-11-16

Abstract: The influence of adsorption time, pH value of solution, ions concentration in solution, humic acid (HA) amount and temperature on the adsorption effect were explored by calculating the adsorption amount and adsorption rate of aluminum saponite colloid for Cs+. The results showed that the adsorption effect of aluminum saponite colloid on Cs+ was best at the conditions of 20 minutes of adsorption time, 7 of solution pH, 3 mg of HA amount and 45 ℃ of temperature. The inhibitory effects of anions and cations on adsorption in the solution were:CO32-> HCO3-> NO3-> SO42-, Ca2+> Mg2+> K+. The adsorption process of Cs+ by aluminum saponite colloid conforms to the quasi-second-order kinetic equation and Langmuir thermodynamic model, which is a spontaneous endothermic process.

Key words: aluminum saponite colloid, Cs+, adsorption amount, adsorption rate, adsorption ability

CLC Number: 

  • TL941