Kamil FH, Abood WM, Mohammed Y, Khedair Z. Heavy Oil Fly Ash as an Adsorbent for Methylene Blue Removal from Aqueous Solution. IJOIR [Internet]. 2022Dec.14 [cited 2024Nov.22];9(3):48-56. Available from: http://ijoir.gov.iq/ijoir/index.php/jou/article/view/262