Ali, Arshad, Hasim Nisar Hashmi, and Intikhab A. Q. “Effects of Methanol on the Treatability of Black Liquor Using UASB Reactor”. Hydro Nepal: Journal of Water, Energy and Environment 6 (January 24, 2011): 42–46. Accessed April 19, 2024. https://www.nepjol.info/index.php/HN/article/view/4193.