title: The simultaneous removal of calcium, magnesium and chloride ions from industrial wastewater using magnesium-aluminum oxide.
abstract: In this article, a method for simultaneous removal of calcium, magnesium and chloride by using Mg0.80Al0.20O1.10 as a Magnesium-Aluminum oxide (Mg‒Al oxide) was investigated. Mg‒Al oxide obtained by thermal decomposition of the Mg-Al layered double hydroxide (Mg-Al LDH). The synthesized Mg‒Al oxide were characterized with respect to nitrogen physicosorption, X-ray diffraction (XRD) and field emission scan electron microscopy (FESEM) morphology. Due to high anion-exchange capacity of Mg‒Al oxide, it was employed in simultaneously removal of Cl(-), Mg(+2) and Ca(+2) from distiller waste of a sodium carbonate production factory. For this purpose, experiments were designed to evaluate the effects of quantity of Mg‒Al oxide, temperature and time on the removal process. The removal of Cl(-), Mg(+2) and Ca(+2) from wastewater was found 93.9%, 93.74% and 93.25% at 60°C after 0.5 h, respectively. Results showed that the removal of Cl(-), Mg(+2) and Ca(+2) by Mg‒Al oxide increased with increasing temperature, time and Mg‒Al oxide quantity.
authors: Institute of Environmental Engineering, Water and Sustainable Development, Sahand University of Technology, Tabriz, Iran.
authors: Roya
authors: R
authors: Hamidi
authors: Davood
authors: D
authors: Kahforoushan
authors: Esmaeil
authors: E
authors: Fatehifar
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry*; D002118:Calcium / Q000737:chemistry* / Q000302:isolation & purification; D002712:Chlorides / Q000737:chemistry* / Q000302:isolation & purification; D007220:Industrial Waste; D008274:Magnesium / Q000737:chemistry* / Q000302:isolation & purification; D017616:Magnesium Compounds / Q000737:chemistry*; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*; D014961:X-Ray Diffraction
chemical_list: D017607:Aluminum Compounds; D002118:Calcium; D002712:Chlorides; D007220:Industrial Waste; D008274:Magnesium; D017616:Magnesium Compounds; D062065:Wastewater; C110424:aluminum magnesium oxide