Ali SAK, Ibrahim LDM, Hussein MSc HA. Removal of Lead from Wastewater by Graphene Coated Sand Composite. IJSBAR [Internet]. 2018 Jan. 6 [cited 2024 May 6];37(1):1-9. Available from: https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8445