Efficient ozonation of reverse osmosis concentrates from petroleum refinery wastewater using composite metal oxide-loaded alumina

• 来源期刊: 石油科学（英文版）
• 年，卷（期）: 2017,（3）
• 页码范围: 605-615
• 页数: 11页
• 语种: 英文
• DOI: 10.1007/s12182-017-0178-x

摘要

Novel Mn-Fe-Mg-and Mn-Fe-Ce-loaded alumina (Mn-Fe-Mg/Al2O3 and Mn-Fe-Ce/Al2O3) were developed to catalytically ozonate reverse osmosis concentrates generated from petroleum refinery wastewaters (PRW-ROC).Highly dispersed 100-300-nm deposits of composite multivalent metal oxides of Mn (Mn2+,Mn3+,and Mn4+),Fe (Fe2+ and Fe3+) and Mg (Mg2+),or Ce (Ce4+) were achieved on Al2O3 supports.The developed Mn-Fe-Mg/Al2O3 and Mn-Fe-Ce/Al2O3 exhibited higher catalytic activity during the ozonation of PRW-ROC than Mn-Fe/Al2O3,Mn/Al2O3,Fe/Al2O3,and Al2O3.Chemical oxygen demand removal by Mn-Fe-Mg/Al2O3-or MnFe-Ce/Al2O3-catalyzed ozonation increased by 23.9％ and 23.2％,respectively,in comparison with single ozonation.Mn-Fe-Mg/Al2O3 and Mn-Fe-Ce/Al2O3 notably promoted ·OH generation and ·OH-mediated oxidation.This study demonstrated the potential use of composite metal oxide-loaded Al2O3 in advanced treatment of bio-recalcitrant wastewaters.