Pengolahan limbah padat industri menjadi alternative fuel and raw material (afr) untuk industri semen (studi kasus: PT Indocement Tunggal Prakarsa tbk, pabrik Citeureup, Bogor, Jawa Barat) = Treatment of solid waste industry as alternative fuel and raw material (afr) in cement industry (case study: PT Indocement Tunggal Prakarsa tbk, Citeureup plant, Bogor, West Jawa)