Gan, J. L., & Cheok, C. Y. (2021). Enhanced Removal Efficiency of Methylene Blue and Water Hardness using NaOH-Modified Durian and Passion Fruit Peel Adsorbents. Progress in Energy and Environment, 16, 36–44. Retrieved from https://akademiabaru.com/submit/index.php/progee/article/view/2951