Nirmala Bhuvana Chandra Ramisetty, Garan Sujinda, Thanathip Janthima, Siriset Saipanyoyai and Bhuyar, P. 2025. Comparative analysis of biochar production from agricultural residues: yield optimization and physicochemical characterization using modified barrel pyrolysis in Northern Thailand. Maejo International Journal of Energy and Environmental Communication. 7, 2 (Jul. 2025), 42–50. DOI:https://doi.org/10.54279/mijeec.v7i2.262827.