Muh. Irfan Rusli et al. 2026. THEORETICAL STUDY AND DESIGN OF INDUSTRIAL RESIDUE-BASED "NICK-ABSORB" MODULAR BRICK BIOFILTER FOR HEAVY METAL MITIGATION IN RUNOFF WATER Nick-Absorb: Biofilter Brick Modular Berbasis Limbah Industri untuk Mitigasi Logam Berat pada Air Limpasan Industri Nikel. RITMA: Journal of Islamic Integrated Research, Science, and Community. 4, 2 (Oct. 2026).