H. Apingien Mufwankolo, R. Huania, Buy Dui Tan, N. B. M., H. Sano, and T. Itayama, “Enhancement of the capability in wastewater treatment by adding biochar into a conical-shaped sequencing batch reactor”, Maejo Int. J. Energ. Environ. Comm. or MIJEEC, vol. 7, no. 3, pp. 14–29, Oct. 2025.