Efficient removal of hexavalent chromium Cr (VI) using magnesium-iron layered double hydroxide supported on orange peel (Mg-Fe LDH@OPP): A synthetic experimental and mechanism studies - Waleed Usmani; Muhammad Ali Inam; Rashid Iftikhar; Iqra Irfan; Rabia Adnan; Muhammad Bilal Khan Niazi; Rizwan Khan; Muhammad Hassan (Journal of Water Process Engineering, 2023)