Sulistiyono, E.; Handayani, M.; Prasetyo, A. B.; Irawan, J.; Febriana, E.; Firdiyono, F.; Yustanti, E.; Sembiring, S. N.; Nugroho, F.; Muslih, E. Y. Implementation of Sulfuric Acid Leaching for Aluminum and Iron Removal for Improvement of Low-Grade Silica from Quartz Sand of Sukabumi, Indonesia. EEJET 2021, 3, 32-40.