Nodehi, Reza, Rahbar-Kelishami, Ahmad. “Study on the removal of diclofenac sodium from an aqueous medium using natural clinoptilolite zeolite modified with Hexadecyltrimethylammonium bromide cationic surfactant.” Journal of applied research in chemisry, vol. 14, no. 3, 2020, pp. 39-51.