Photocatalytic treatment of diverse contaminants of potential concern in oil sands process-affected water

被引：0
作者：
Martin, Jeffrey T. [1 ]
Leshuk, Timothy M.C. [1 ,2 ]
Armstrong, Kieran [1 ]
Chai, Tia [1 ]
Young, Zachary W. [1 ]
Paradis, Theo [3 ]
Bekele, Asfaw [4 ]
White, Todd [5 ]
Gu, Frank [1 ,2 ]
机构：
[1] H2nanO Inc., Kitchener, N2R 1E8, ON
[2] Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, M5S 3E5, ON
[3] Canadian Natural Resources Ltd., Calgary, T2P 4J8, AB
[4] Imperial Oil Resources Limited, Calgary, T2C 4P3, AB
[5] Teck Resources Ltd., Vancouver, V6C 0B3, BC
来源：
Chemosphere | 2024年 / 365卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Naphthenic acids; Oil sands; Passive treatment; Photocatalysis; Polycyclic aromatic hydrocarbons; Toxicology;
D O I：
10.1016/j.chemosphere.2024.143344
中图分类号：
学科分类号：
摘要：
Oil sands process-affected water (OSPW), generated by surface mining in Canada's oil sands, require treatment of environmentally persistent dissolved organic compounds before release to the watershed. Conventional chemical and mechanical treatments have not proved suitable for treating the large quantities of stored OSPW, and the biological recalcitrance of some dissolved organics may not be adequately addressed by conventional passive treatment systems. Previous work has evaluated photocatalytic treatment as a passive advanced oxidation process (P-AOP) for OSPW remediation. This work expands upon this prior research to further characterize the effects of water chemistry on the treatment rate and detoxification threshold. Under artificial sunlight, buoyant photocatalysts (BPCs) detoxified all OSPW samples within 1 week of treatment time with simultaneous treatment of polycyclic aromatic hydrocarbons, naphthenic acid fraction components (NAFCs), and un-ionized ammonia. Overall, these results further demonstrate passive photocatalysis as an effective method for treatment of OSPW contaminants of potential concern (COPCs). © 2024 The Authors
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