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Bugs and veggies as tailings management tools

Bugs and veggies as tailings management tools
虫子和蔬菜作为尾矿管理工具
批准号:
506240-2016
负责人:
Dambrowitz, Christopher
金额:
$5.44万
依托单位国家:
加拿大
项目类别:
Applied Research and Development Grants - Level 2
财政年份:
2018
资助国家:
加拿大
项目状态:
已结题
起止时间:
2018-01-01 至 2019-12-31

项目摘要

项目成果

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中文摘要
翻译
目前的尾矿处理方法,如蒸发、冻融、聚合物改良和离心,由于需要大面积、干燥所需时间和存款深度的限制,是高成本的替代方案。该项目由北方阿尔伯塔理工学院(NAIT)的三个应用研究中心牵头,与加拿大油砂创新联盟(COSIA)和油砂创新研究所(IOSI)合作,旨在展示一种新的方法,通过(1)种植能有效发芽 ** 和/或建立和修复成熟细粒尾矿(MFT)的本地北方植物物种,和(2)通过用已知的土著细菌的聚生体增加MFT来增强本地植物的建立,所述土著细菌被证明具有促进植物生长、增强养分循环和降解有毒烃化合物的潜力。这项研究的目的是克服目前的障碍,利用 ** 本地木本和草本北方物种具有高蒸散率和证明潜力 ** 发芽和建立在MFT。将从MFT来源中分离和富集能够降解特定有机化合物(如 ** 石脑油)并将氮固定为铵的细菌培养物。将使用生物相容性载体用细菌培养物接种MFT。然后,选定的北方物种将在接种的MFT生物增强土著细菌上发芽和/或建立,为根际提供高的修复潜力,其中根分泌物将进一步增强其活性。结果 ** 将是一个有利于植物生长和恢复尾矿中营养循环途径的环境。该项目将使油砂运营商受益,采用环境和经济上可行的方法 ** 同时稳定和修复尾矿,从而将尾矿转化为能够 ** 维持复垦和重新造林工作的土壤系统,并促进矿山关闭计划。
英文摘要
Current approaches for tailings treatment, such as evaporation, freeze-thaw, polymer amendment, and**centrifugation are high cost alternatives due to large areas required, time needed for drying and limitations with**deposit depth. This project, led by three applied research centres at the Northern Alberta Institute of**Technology (NAIT) in collaboration with Canada's Oil Sands Innovation Alliance (COSIA) and the Institute**for Oil Sands Innovation (IOSI), aims to demonstrate a novel approach to simultaneously dewater, consolidate**and remediate mature fine tailings (MFT) by (1) growing native boreal plant species that effectively germinate**and/or establish and dewater MFT, and (2) enhancing native plant establishment by augmenting MFT with**known consortia of indigenous bacteria with proven potential to promote plant growth, enhance nutrient**cycling and degrade toxic hydrocarbon compounds. The study aims to overcome current barriers by using**native woody and herbaceous boreal species with high evapotranspiration rates and proven potential to**germinate and establish on MFT. Bacterial cultures capable of degrading specific organic compounds such as**naphtha, and fix nitrogen to ammonium, will be isolated and enriched from MFT sources. The MFT will be**inoculated with the bacterial cultures using biocompatible carriers. The selected boreal species will then be**germinated and/or established on the inoculated MFT bioaugmenting indigenous bacteria, providing high**remediation potential to the rhizosphere, where root exudates will further enhance their activity. The outcome**will be a hospitable environment for plant growth and restoration of nutrient cycling pathways in the tailings.**The project will benefit the oil sands operators with an environmentally and economically viable approach to**simultaneously stabilize and remediate tailings, thereby transforming tailing into a soil system capable of**sustaining reclamation and reforestation efforts, and facilitating mine closure plans.
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