ANALYSIS ON ADSORPTION PROPERTIES OF U(Ⅵ) BY DIFFERENT SOIL COMPONENTS IN PADDY SOIL AROUND A URANIUM TAILINGS POND

LIU Xue; LI Xiao-yan; CHEN Yu-jie; SANG Wei-xuan; CHEN Rong; XIAO Hui

doi:10.13205/j.hjgc.202006040

Volume 38 Issue 6

Aug. 2020

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LIU Xue, LI Xiao-yan, CHEN Yu-jie, SANG Wei-xuan, CHEN Rong, XIAO Hui. ANALYSIS ON ADSORPTION PROPERTIES OF U(Ⅵ) BY DIFFERENT SOIL COMPONENTS IN PADDY SOIL AROUND A URANIUM TAILINGS POND[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 245-251. doi: 10.13205/j.hjgc.202006040

Citation:

LIU Xue, LI Xiao-yan, CHEN Yu-jie, SANG Wei-xuan, CHEN Rong, XIAO Hui. ANALYSIS ON ADSORPTION PROPERTIES OF U(Ⅵ) BY DIFFERENT SOIL COMPONENTS IN PADDY SOIL AROUND A URANIUM TAILINGS POND[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 245-251. doi: 10.13205/j.hjgc.202006040

Citation:

LIU Xue, LI Xiao-yan, CHEN Yu-jie, SANG Wei-xuan, CHEN Rong, XIAO Hui. ANALYSIS ON ADSORPTION PROPERTIES OF U(Ⅵ) BY DIFFERENT SOIL COMPONENTS IN PADDY SOIL AROUND A URANIUM TAILINGS POND[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 245-251. doi: 10.13205/j.hjgc.202006040

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ANALYSIS ON ADSORPTION PROPERTIES OF U(Ⅵ) BY DIFFERENT SOIL COMPONENTS IN PADDY SOIL AROUND A URANIUM TAILINGS POND

doi: 10.13205/j.hjgc.202006040

State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China

Received Date: 2019-07-23

Abstract

Abstract

The soil colloid was extracted by Stoke’s law and the organic matter in the soil was removed by continuous extraction method to obtain mineral colloid. The original soil, soil colloid and mineral colloid were characterized by specific surface area (BET) method and Zeta potential determination. The effects of solution pH, reaction time, initial concentration of U(Ⅵ) and temperature on adsorption of U(Ⅵ) by the three samples were investigated. The results showed that the specific surface area and average pore diameter of the original soil, soil colloid and mineral colloid were 11.5, 31.1, 28.8 m²/g and 18.76, 35.55, 17.5 nm, respectively. When pH was 5.5, the solid-liquid ratio was 1.0 g/L, the temperature was 20 ℃, the initial concentration of U(Ⅵ) was 10.0 mg/L, the reaction time of soil and soil colloid was 50 min and the reaction time of mineral colloid was 40 min, the removal rates of original soil, soil colloid and mineral colloid reached 76.67%, 83.03% and 48.87%, respectively, and the adsorption capacities reached 8.53, 9.24, 5.43 mg/g, respectively. The colloid in soil had obvious adsorption ability on U(Ⅵ) in solution. It had certain reference significance for studying on the treatment of containing U(Ⅵ) wastewater and the migration process of U(Ⅵ) in soil and groundwater.
- soil colloid,
- mineral colloid,
- uranium,
- adsorption,
- specific surface area,
- Zeta potential

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References(36)

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