The School of Resource and Environmental Management, Simon Fraser University, 8888 University Drive Burnaby, British Columbia, V5A 1S6, Canada.
Environ Sci Process Impacts. 2024 Oct 16;26(10):1859-1867. doi: 10.1039/d4em00227j.
Treatment wetland microcosms were constructed to evaluate the fate of O-naphthenic acids in microcosm reactors containing OSPW only (, natural attenuation), OSPW with peat soil (sorption and microbial degradation), and cattail microcosm reactors (plant-mediated uptake and biotransformation). Depletion in OSPW occurs by mechanisms of natural attenuation, sorption and microbial degradation, and plant-mediated uptake and biotransformation. The average rate of depletion for O-naphthenic acids was 0.005 (SD 0.010) per day in OSPW only, 0.029 (SD 0.013) per day in OSPW with peat soil, and 0.043 (SD 0.013) per day in cattail microcosm reactors. Slow rates of depletion from OSPW by natural attenuation highlight the need to develop effective remediation strategies for OSPW, and the increase in rates of depletion for cattail microcosm reactors highlights the importance of wetland vegetation in supporting naphthenic acid removal from OSPW. Reactors containing OSPW with peat soil showed the greatest increase in rates of O-naphthenic acid depletion for lower molecular weight congeners compared to reactors with OSPW only. Cattail microcosm reactors showed the greatest increase in the rates of O-naphthenic acid depletion for higher molecular weight congeners compared to reactors with OSPW and peat soil.
处理湿地微宇宙被构建来评估 O-环烷酸在微宇宙反应器中的命运，这些微宇宙反应器仅含有 OSPW（自然衰减）、含有泥炭土的 OSPW（吸附和微生物降解）和香蒲微宇宙反应器（植物介导的吸收和生物转化）。OSPW 中的 O-环烷酸通过自然衰减、吸附和微生物降解以及植物介导的吸收和生物转化等机制耗尽。仅含有 OSPW 的微宇宙中 O-环烷酸的平均消耗率为每天 0.005（SD 0.010），含有 OSPW 和泥炭土的微宇宙中为每天 0.029（SD 0.013），含有香蒲微宇宙的微宇宙中为每天 0.043（SD 0.013）。OSPW 通过自然衰减缓慢消耗，这突出表明需要开发有效的 OSPW 修复策略，而香蒲微宇宙中消耗率的增加则突出表明湿地植被在支持 OSPW 中环烷酸去除方面的重要性。与仅含有 OSPW 的反应器相比，含有 OSPW 和泥炭土的反应器中低分子量同系物的 O-环烷酸消耗率增加最大。与含有 OSPW 和泥炭土的反应器相比，香蒲微宇宙中高分子量同系物的 O-环烷酸消耗率增加最大。
