Kosaiyakanon C, Kungsanant S. Adsorption of Reactive Dyes from Wastewater Using Cationic Surfactant-modified Coffee Husk Biochar: DOI: 10.32526/ennrj.18.1.2020.03. Environ. Nat. Resour. J. [Internet]. 2019 Jul. 30 [cited 2024 May 2];18(1):21-32. Available from: https://ph02.tci-thaijo.org/index.php/ennrj/article/view/207229