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Applied Radiation and Isotopes
Volume 181, 2022, 110111

Adsorption of strontium at K-feldspar-water interface

Hanyu Wua, Zhen Xub, Lu Zhua

Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China.

Abstract

Feldspars, a type of important and prevalent primary mineral in soils, play a significant role in the migration of radioactive strontium in the environment. Nevertheless, there are rare studies on strontium adsorption on feldspars. This work presents a study on the interaction between strontium and K-feldspar at the solid-water interface. The effects of environmental factors were evaluated using batch experiments with 90Sr tracer. Surface complexation contributed to the chemical adsorption of strontium in the slightly acidic condition.

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