The Remediation of Congo Red-Contaminated Groundwater by using a Permeable Reactive Barrier Through Modified Waterworks Sludge MgAl-LDH . alkej [Internet]. 2023 Dec. 1 [cited 2024 May 11];19(4):16-28. Available from: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/880