Yanqoritha, Nyimas, Kuswandi, and Sulhatun Sulhatun. 2022. “Evaluation of Kinetic Parameters of Nitrification Process in Biofilter System to Efluent Liquid Waste of Tofu Industry”. Jurnal Penelitian Pendidikan IPA 8 (6):2744-51. https://doi.org/10.29303/jppipa.v8i6.2453.