Studi tentang integrasi pengolahan used bleaching earth cake dari proses daur ulang pelumas bekas = Study of integrated treatment of used bleaching earth cake from lubricant oil recycling process

Pemanfaatan limbah oli bekas sebagai bahan bakar pembantu peledakan (ANFO) pada kegiatan pertambangan batubara (kasus pemanfaatan limbah oli bekas di PT. JMB Group) = Utilization of used oil as fuel helper (ANFO) for blasting activity in coal mining (case used oil utilization in PT. JMB Group) / Danang Widiyanto

Tinjauan sistematis faktor-faktor risiko pajanan timbal pada anak di sekitar situs daur ulang aki bekas informal di Indonesia = Systematic review of risk factors for lead exposure in children around informal used battery recycling sites in Indonesia.

Analisis Pengaruh Perilaku Konsumen terhadap Repurchase Intention Barang Bekas Pakai Secara Online (Studi Kasus: Carousell)= The Influence of Consumer Behavior on Repurchase Intention of Used Goods Online (Case Study: Carousell)

Upcycle plastik bekas pakai sebagai material struktur bangunan = Used plastic upcycle for building structure's material