湿地植物对油砂过程影响水体中金属的吸收:一个案例研究。

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Environmental Technology Pub Date : 2025-06-01 Epub Date: 2024-12-31 DOI:10.1080/09593330.2024.2443600
Alexander M Cancelli, Asfaw Bekele, Andrea K Borkenhagen
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引用次数: 0

摘要

处理湿地已成为油砂过程影响水域(OSPW)的潜在修复选择,该水域包含一系列潜在的有机和无机成分。本研究的目的是评估金属在处理湿地暴露于OSPW的命运。数据是在艾伯塔省北部的Kearl处理湿地的三个作业季节中收集的,测试了淡水和OSPW的输入。总体而言,结果表明,与其他工业渣油相比,Kearl油砂矿渣油的金属和微量元素含量相对较低。从OSPW引入湿地的无机成分中,6种分析物(As、Ba、Cu、Mo、Ni和U)经湿地处理后被净化,分布在湿地介质(水、沉积物、植物)中,并转移到水草和香蒲组织中。这些分析物主要通过对沉积物的吸附来从OSPW中去除,而Mo和Cu在植物组织中的吸收和储存比其他分析物更高。香蒲和水草对金属的吸收量无显著差异;根浓度高于叶浓度。不同年份的根和叶浓度因子相似,表明植物吸收机制不受暴露于OSPW的影响,生物浓度主要是暴露的函数。这些发现支持了对处理湿地在OSPW修复中的应用的进一步研究,并强调了进一步研究以优化这些系统以适应不同类型的OSPW的必要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Metal uptake in wetland plants from oil sands process-affected waters: a case study.

Treatment wetlands have emerged as a potential remediation option for oil-sands process affected waters (OSPW) which contains a suite of organic and inorganic constituents of potential concern. The aim of this study was to evaluate the fate of metals in a treatment wetland exposed to OSPW. Data was collected over three operational seasons testing freshwater and OSPW inputs at the Kearl Treatment Wetland in northern Alberta. Overall, results show that OSPW from the Kearl oil sands mine has relatively low concentrations of metals and trace elements compared to other industrial OSPW. Of the inorganic constituents introduced into the wetland from OSPW, six analytes (As, Ba, Cu, Mo, Ni, and U) were found to depurate by wetland treatment, were distributed among wetland media (water, sediment, plants), and translocated into water sedge and cattail tissue. Depuration of these analytes from the OSPW occurred mainly through sorption to sediment, while Mo and Cu had higher uptake and storage within plant tissue compared to the other analytes. No significant differences in metal uptake were observed between cattails and water sedge; root concentrations were higher than leaf concentrations. Root and leaf concentration factors were similar across years indicating that mechanisms of plant uptake were not impacted by exposure to OSPW and that bioconcentration was mainly a function of exposure. These findings support continued investigation into the application of treatment wetlands for OSPW remediation and underscore the need for further studies to optimize these systems for diverse OSPW types.

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来源期刊
Environmental Technology
Environmental Technology 环境科学-环境科学
CiteScore
6.50
自引率
3.60%
发文量
0
审稿时长
4 months
期刊介绍: Environmental Technology is a leading journal for the rapid publication of science and technology papers on a wide range of topics in applied environmental studies, from environmental engineering to environmental biotechnology, the circular economy, municipal and industrial wastewater management, drinking-water treatment, air- and water-pollution control, solid-waste management, industrial hygiene and associated technologies. Environmental Technology is intended to provide rapid publication of new developments in environmental technology. The journal has an international readership with a broad scientific base. Contributions will be accepted from scientists and engineers in industry, government and universities. Accepted manuscripts are generally published within four months. Please note that Environmental Technology does not publish any review papers unless for a specified special issue which is decided by the Editor. Please do submit your review papers to our sister journal Environmental Technology Reviews at http://www.tandfonline.com/toc/tetr20/current
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