Optimization Design of Metakaolin-Based Geopolymer Solidification for Potassium Copper Hexacyanoferrate After Cs + Adsorption Using Response Surface Methodology. - Liao, Yuqing; Yu, Xingyu; Yuan, Xinyi; Wang, Jingsong; Yan, Yao; Ouyang, Gaoshang (Materials (1996-1944), 2026)