Chitosan/silica composite membrane: Performance on water permeability and rejection of lead(II) ion from aqueous solution. Mal. J. Fund. Appl. Sci. [Internet]. 2020 Jun. 15 [cited 2026 Sep. 7];16(3):314-7. Available from: https://mjfas.utm.my/index.php/mjfas/article/view/1489