کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5747401 1618798 2017 51 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A risk-based approach for identifying constituents of concern in oil sands process-affected water from the Athabasca Oil Sands region
ترجمه فارسی عنوان
یک رویکرد مبتنی بر ریسک برای شناسایی اجزای نگرانی در آبهای آسیبدیده در ماسه های نفتی از منطقه ماسه ای نفتی آتاباسکا
کلمات کلیدی
ماسه های نفتی آب تحت تاثیر فرآیند، امکانات بیرونی بیرونی، اسیدهای نفتنیک، سمی بودن ماهی،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
Mining leases in the Athabasca Oil Sands (AOS) region produce large volumes of oil sands process-affected water (OSPW) containing constituents that limit beneficial uses and discharge into receiving systems. The aim of this research is to identify constituents of concern (COCs) in OSPW sourced from an active settling basin with the goal of providing a sound rational for developing mitigation strategies for using constructed treatment wetlands for COCs contained in OSPW. COCs were identified through several lines of evidence: 1) chemical and physical characterization of OSPW and comparisons with numeric water quality guidelines and toxicity endpoints, 2) measuring toxicity of OSPW using a taxonomic range of sentinel organisms (i.e. fish, aquatic invertebrates, and a macrophyte), 3) conducting process-based manipulations (PBMs) of OSPW to alter toxicity and inform treatment processes, and 4) discerning potential treatment pathways to mitigate ecological risks of OSPW based on identification of COCs, toxicological analyses, and PBM results. COCs identified in OSPW included organics (naphthenic acids [NAs], oil and grease [O/G]), metals/metalloids, and suspended solids. In terms of species sensitivities to undiluted OSPW, fish ≥ aquatic invertebrates > macrophytes. Bench-scale manipulations of the organic fractions of OSPW via PBMs (i.e. H2O2+UV254 and granular activated charcoal treatments) eliminated toxicity to Ceriodaphnia dubia (7-8 d), in terms of mortality and reproduction. Results from this study provide critical information to inform mitigation strategies using passive or semi-passive treatment processes (e.g., constructed treatment wetlands) to mitigate ecological risks of OSPW to aquatic organisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 173, April 2017, Pages 340-350
نویسندگان
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