Mohd Zainuddin NA, Mohamad Sarwani N, Puasa SW, Ismail KN. Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production. ijie [Internet]. 2022 Sep. 6 [cited 2024 May 17];14(5):178-87. Available from: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/11939