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Efficient ozonation of reverse osmosis concentrates from petroleum refinery wastewater using composite metal oxideloaded alumina

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petroleum Science 2017年第3期14卷 605-615页

作者： Yu Chen Chun-Mao Chen Brandon A.Yoza Qing X.Li Shao-Hui Guo Ping Wang Shi-Jie Dong Qing-Hong Wang State Key Laboratory of petroleum Pollution Control Beijing Key Laboratory of Oil and Gas Pollution Control China University of Petroleum Hawaii Natural Energy Institute University of Hawaii at Manoa Department of Molecular Biosciences and Bioengineering University of Hawaii at Manoa

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（Mn^2＋）, Mn^3＋,and Mn^4＋, Fe（Fe^2＋）and Fe^3＋ and Mg（Mg^2＋）, or Ce（Ce^4＋） 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/Al2O-3, Fe/Al2O3, and Al2O3. Chemical oxygen demand removal by Mn–Fe–Mg/Al2O3-or Mn–Fe–Ce/Al2O3-catalyzed ozonation increased by 23.9% and23.2%, respectively, in comparison with single ***–Fe–Mg/Al2O3 and Mn–Fe–Ce/Al2O3 notably promoted áOH generation and áOH-mediated oxidation. This study demonstrated the potential use of composite metal oxide-loaded Al2O3 in advanced treatment of bio-recalcitrant wastewaters.

关键词： petroleum refinery wastewater Reverseosmosis concentrate Catalytic ozonation Compositemetal oxide

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Rapid aerobic granulation using biochar for the treatment of petroleum refinery wastewater

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petroleum Science 2020年第5期17卷 1411-1421页

作者： Xin Wang Jie Ming Chun-Mao Chen Brandon A.Yoza Qian-Wei Li Jia-Hao Liang Geoffrey Michael Gadd Qing-Hong Wang State Key Laboratory of Heavy Oil Processing State Key Laboratory of Petroleum Pollution ControlChina University of Petroleum-BeijingBeijing 102249China Hawaii Natural Energy Institute University of Hawaii at ManoaHonoluluHI 96822USA Geomicrobiology Group School of Life SciencesUniversity of DundeeDundee DD15EHScotlandUK

Aerobic granular sludge technology has great potential for the treatment of petroleum refinery ***,strategies to shorten the granulation time and improvement the stability still need to be *** this work,biochar was prepared from waste petroleum activated sludge(biochar-WPS) and used in a sequencing batch reactor for the treatment of petroleum refinery ***-WPS presented the surface area of 229.77 m2/g,pore volume of 0.28 cm3/g,H/C and O/C atomic ratios of 0.42 and 0.21,*** porous structure and a high degree of hydrophilicity were found to facilitate microbial colonization and adhesion as well as particle *** of biochar-WPS resulted in the formation of more substantial and stable aerobic granules(~66% of granules> 0.46 mm diameter) 15 days earlier compared with the *** addition of biochar-WPS enhanced the average removal efficiency of chemical organic demand(~3%),oil(~4%)and total nitrogen(~10%) over the *** microbial richness and diversity were observed within the formed granules and had an increased(~4%) proportion of denitrifying *** results indicate that an aerobic granulation mechanism using biochar-WPS is a feasible option for the treatment of petroleum refinery wastewater.

关键词： Biochar petroleum refinery wastewater petroleum activated sludge Granular sludge Denitrifying bacteria

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