Umar, B. A., A. Isah, F. M Dandare, Ahmad, A. Ahmad, A., Abdullahi, A. G. Abdullahi, A. G., A. I. Hashimu, M. I. Sanusi, S. S. Adamu, and M. K Sani. “Enhancing Biogas Quality and Energy Content through Calcium Hydroxide Treatment: A Study on the Effectiveness of 20% Ca(OH)2 Solution in Improving Methane Content and Reducing Impurities”. International Journal of Science for Global Sustainability 11, no. 3 (October 25, 2025): 31–33. Accessed September 13, 2026. https://fugus-ijsgs.com.ng/index.php/ijsgs/article/view/916.