CAS Key Laboratory of Green Process and Engineering National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 ChinaCollege of Chemical and Engineering University of Chinese Academy of Sciences Beijing 100049 China;
CAS Key Laboratory of Green Process and Engineering National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China;
CAS Key Laboratory of Green Process and Engineering National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China;
CAS Key Laboratory of Green Process and Engineering National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 ChinaCollege of Chemical and Engineering University of Chinese Academy of Sciences Beijing 100049 China;
Spent denitrification catalyst; Oxalic acid; Dissolution kinetic; Avrami model;