Thipraksa, Junjira, and Pimprapa Chaijak. “Improved the Coconut Shell Biochar Properties for Bio-Electricity Generation of Microbial Fuel Cells from Synthetic Wastewater”. Journal of Degraded and Mining Lands Management 9, no. 4 (July 1, 2022): 3613–3619. Accessed May 21, 2024. https://www.jdmlm.ub.ac.id/index.php/jdmlm/article/view/1191.