Nasri, N., Martel, H., Abbas, I., Hayatu, U., Zain, H., Abdulrasheed, A., Mohsin, R., Majid, Z., Rashid, N., Sharer, Z., & Garba, A. (2017). Comparative Study of Natural Gas Adsorption Isotherms on KOH and H₃PO₄ Palm Kernel Shells Porous Activated Carbon. Chemical Engineering Transactions, 56, 1483-1488. https://doi.org/10.3303/CET1756248