Pengaruh reduksi roasting dan konsentrasi leaching asam sulfat terhadap recovery nikel dari bijih limonit = Recovery of nickel using limonite ore: the effect of reduction roasting and sulphuric acid at various concentration

Pengaruh jenis dan konsentrasi larutan leaching terhadap recovery logam emas dan tembaga dari hasil daur ulang printed circuit board = Effect of type and concentration of leaching solution towards the recovery of gold and copper metals from recycled printed circuit board

Pengaruh konsentrasi lixiviant dan waktu pelindian bijih malasit dengan ammonium bikarbonat = Effect of lixiviant concentration and leaching time malachite ore in ammonium bicarbonate

Analisis pengaruh konsentrasi fluks terhadap proses ekstraksi titanium dioksida dari pasir besi Tasikmalaya dengan menggunakan metode pyro hydrometallurgy = Analysis of the effect of concentration flux of extraction process of titanium dioxide from Tasikmalaya s iron sand by using pyro hydrometallurgical method

Optimalisasi pelindian emas dari bijih sulfida hasil penambangan daerah Bolaang Mongondow pada larutan tiosulfat dengan variabel konsentrasi ammonia dan ion tembaga = Optimalization of thiosulfate leaching for sulfide Bolaang Mongondow's ore with concentration of ammonia and copper ion varibale