A na-eji usoro nzaghachi elu (RSM) mụọ usoro nitric acid leaching nke mkpofu Co Mo based hydrotreating catalyst. Ebumnuche nke ọmụmụ ihe a bụ ịmebata CO na Mo site na onye na-emepụta ihe na-emefu n'ime ihe mgbaze n'ụdị mmiri soluble, iji mee ka ọ dị ọcha na mgbake na-esote, ma ghọta ọgwụgwọ adịghị emerụ ahụ na iji ihe onwunwe nke mkpofu siri ike, mmeghachi omume. okpomọkụ na ihe siri ike-mmiri ruru. Ekpebiri ihe ndị bụ isi na-emetụta ya site na usoro nzaghachi elu, wee guzobe nha nhata nke usoro usoro yana ọnụ ọgụgụ leaching cobalt na molybdenum. N'okpuru ọnọdụ usoro kachasị mma nke ihe nlereanya ahụ nwetara, ọnụ ọgụgụ nke cobalt leaching karịrị 96%, na molybdenum leaching ọnụego bụ karịa 97%. O gosipụtara na usoro usoro kachasị mma nke enwetara site na usoro nzaghachi elu bụ nke ziri ezi na nke a pụrụ ịdabere na ya, enwere ike iji ya duzie usoro mmepụta ihe n'ezie.