SANGKHARAK K, PICHID N, YUNU T, KINGMAN P. Separation of Carotenes and Vitamin E from Palm Oil Mill Effluent Using Silica from Agricultural Waste as an Adsorbent. Walailak J Sci & Tech [Internet]. 2016Jan.9 [cited 2024Apr.27];13(11):939-47. Available from: https://wjst.wu.ac.th/index.php/wjst/article/view/1815