The Drivers of Hydraulic Conductivity in Green Liquor Dregs Amended Till: Application to Reclamation of Acid Generating Mine Sites
The Drivers of Hydraulic Conductivity in Green Liquor Dregs Amended Till: Application to Reclamation of Acid Generating Mine Sites
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绿液渣中水力电导率的驱动因素修正至：在产酸矿区复垦中的应用
DOI：
10.1007/s10230-023-00919-5
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发表时间：
2023
影响因子：
2.8
通讯作者：
J. Lindblom
中科院分区：
文献类型：
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作者：
Susanne Nigéus;C. Maurice;J. Lindblom
采矿业产生大量废物，这些废物与氧气接触可能导致金属浸出。有时候，矿山废物的适当覆盖材料的获得是有限的，这就产生了为这些目的回收工业残余物的动力。绿色液渣（GLD）是造纸和纸浆生产过程中产生的工业残渣，具有用作封层改良剂的潜力。虽然水力传导率通常用于评估密封层的质量，但实验室调查的现场应用具有挑战性，因为除了冰碛物和GLD的物理性质的巨大变化之外，还有许多因素控制水力传导率。在本研究中，5-20重量%的将两个不同米尔斯造纸厂生产的具有不同总固体含量和粒度分布的GLD与具有不同总固体含量的粉质土混合，以研究材料的干密度、初始含水量和压实度对水力传导率的影响。我们发现材料的初始含水量是最重要的因素。对于干燥的冰碛物和GLD，应添加更多的GLD以获得尽可能低的水力传导率。压实度对混合料的导水率没有显著影响。
The mining industry produces massive amounts of waste that in contact with oxygen can result in leaching of metals. Access to a suitable cover-material for the mine waste is sometimes limited, creating a driving force for recycling industrial residues for these purposes. Green liquor dregs (GLD), an industrial residue from paper and pulp production, has the potential to be used in a sealing layer as an amendment to till. Though hydraulic conductivity is commonly used to evaluate the quality of the sealing layer, field application from laboratory investigations is challenging as many factors, apart from vast variations in the physical properties of both the till and the GLD, control hydraulic conductivity. In this study, 5–20 wt.% of GLD from two different paper mills, with different total solid contents and particle size distributions, were mixed with a silty till with varying total solid contents to investigate how the materials’ dry density, initial water content, and compaction affects the hydraulic conductivity. We found that the initial water content of the materials was the most important factor. With a drier till and GLD, more GLD should be added to attain the lowest hydraulic conductivity possible. The compaction was not found to notably affect the mixtures’ hydraulic conductivity.
GLD/STH两步辅酶再生系统的构建及其在氧化反应中的应用
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Tsuyoshi Mouri;et al.;毛利剛;毛利剛;毛利剛;毛利剛;毛利剛;毛利剛
通讯作者：
毛利剛