Hendronursito, Yusup and Amin, Muhammad and Sumardi, Slamet and Marjunus, Roniyus and Clarasati, Frista and Birawidha, David Chandra and Al Muttaqqi, Muhammad and Isnugroho, Kusno Processing of granite quarry solid waste into industrial high silica materials using leaching process with HCl concentration variation. Jurnal Riset Teknologi Pencegahan Pencemaran Industri.