ASPIRE - Accelerated Supergene Processes in Repository Engineering

ASPIRE - 存储库工程中加速的 Supergene 过程

• 批准号: EP/T03100X/1
• 负责人: Devin Sapsford
• 金额: $ 75.48万
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FT03100X%2F1
• 关键词: ASPIRE; Accelerated; Supergene; Processes; Repository

The UK faces serious strategic challenges with the future supply of aggregates, critical minerals and elements. At the same time, the UK must sustainably manage multimillion tonne annual arisings of industrial, mining and mineral wastes (IMMWs). The amount of these wastes generated is projected to increase over the coming years, particularly (i) ash from the combustion of biomass and municipal solid waste, and (ii) contaminated dredgings. These wastes will continue to be landfilled despite often containing valuable resources such as high concentrations of critical metals, soil macronutrients and useful mineral components, some of which actively drawdown atmospheric CO2. The fundamental aim of the ASPIRE (Accelerated Supergene Processes In Repository Engineering) research project is to develop a sustainable method by which ashes, contaminated dredgings and other IMMWs can be stripped of any valuable elements. These stripped elements would then be concentrated in an ore zone for later retrieval and the cleaned residues also returned to use, for example as aggregates, cement additives, or agricultural amendments (including those for carbon sequestration through enhanced mineral weathering). It is a very challenging problem to devise a truly sustainable method to achieve this is an economically viable way, and almost all processes suggested so far in the literature for leaching wastes are themselves carbon and chemical intensive and thus non-sustainable.We are proposing research that comprises the first steps in developing the "ASPIRE waste repository" concept with accelerated analogues of ore-forming "supergene" processes engineered in, such that the dormant waste undergoes processes to (i) concentrate valuable components (e.g. critical metals, phosphate) as an anthropogenic ore to facilitate their future recovery, and (ii) concurrently decontaminate residual mineral material so as to make it available as a bank of material to drawdown for "soft" uses in agriculture, silviculture, greenspace, landscaping in new developments, habitat creation and/or as a cement/concrete additive or replacement aggregate.The processes investigated rely on rainwater passing through a vegetated surface layer which releases naturally occurring compounds from the plant roots and/or other natural organic matter which then pass through and strip valuable elements from the IMMW. The mobilised elements will then pass into a capture zone where they will be stripped from solution and concentrated to form an artificial ore. The research project will seek to engineer the internal processes of the temporary storage waste repository to optimise this. At the same time the upper vegetated surface of the waste repository will serve as greenspace with commensurate ecological and amenity value for local populations.Among the key research challenges is in how to engineer the internal ASPIRE waste repository processes which rely on complex biogeochemical interactions and flow behaviour. Another critical research challenge is to develop an understanding of stakeholder and wider acceptability of this concept which does not fit with current legislation on waste management. With this project we seek to provide a circular technology solution for how we can sustainably manage the future multimillion tonne arisings of IMMW at a critical time as the UK government develops strategies and supporting regulation for the transition to a circular economy.

英国在未来的聚集体，关键矿物质和要素的供应中面临严重的战略挑战。同时，英国必须可持续地管理数百万吨工业，采矿和矿物质废物（IMMWS）的年度兴起。预计生成的废物的数量将在未来几年中增加，特别是（i）生物质和市政固体废物的燃料，以及（ii）被污染的Dredgings。尽管经常包含高浓度的关键金属，土壤大量营养素和有用的矿物质成分，但这些废物仍将继续被垃圾填充，其中一些矿物质会积极吸收大气CO2。 Aspire的基本目的（存储库工程中的加速超值过程）研究项目是开发一种可持续方法，通过该方法可以通过该方法将任何有价值的元素剥夺，灰烬，受污染的Dredgings和其他IMMW可以剥夺。然后将这些剥离的元素集中在矿石区域以进行以后的检索，并且清洁的残留物也返回到使用，例如聚集物，水泥添加剂或农业修正案（包括通过增强的矿物风化的碳封存的残留物）。设计一种真正可持续的方法来实现这一点是一个非常具有挑战性的问题，这是一种经济上的可行方式，几乎所有在浸出废物文献中提出的过程本身就是碳和化学强度，因此无法维持的研究。我们提出的研究构成了“在加速的“ ASPORE REPOSERIEN”概念上开发“ Aspeipor”概念的第一步。经历（i）将有价值的成分（例如，关键金属，磷酸盐）集中为人为矿石，以促进其未来的恢复，（ii）同时净化残留的矿物质材料，以便将其作为“在农业，silvicultruly，silvicult，landspicer，landspice，landspicping of andsping of landsping of landsping or in landsping of landsping of landsping ofercaping of andsping or andsping or in landspicping”中，以使其作为材料提供，又有材料。水泥/混凝土添加剂或替代骨料。研究的过程依赖于穿过植被表面层的雨水，该雨水从植物根和/或其他天然有机物中释放出天然存在的化合物，然后从IMMW中通过并从IMMW中剥离有价值的元素。然后，动员的元素将进入一个捕获区，在该区域将它们从溶液中剥离并集中以形成人造矿石。该研究项目将寻求设计临时存储废物存储库的内部流程以优化这一点。同时，废物存储库的上植被表面将充当绿色空间，对当地人群的生态和便利性价值相称。在关键的研究挑战中，如何设计依赖于复杂的生物地球化学相互作用和流动行为的内部ASPIRE ASPIRE废物存储库过程。另一个关键的研究挑战是对利益相关者的理解和对此概念的更广泛的接受性，这与当前的废物管理立法不符。通过该项目，我们试图为我们如何在关键时刻能够可持续地管理IMMW的未来数百万吨的循环技术解决方案，因为英国政府制定战略并支持对过渡到循环经济的监管。

项目成果

Towards passive bioremediation of dye-bearing effluents using hydrous ferric oxide wastes: Mechanisms, products and microbiology.

• DOI: 10.1016/j.jenvman.2022.115332
• 发表时间: 2022-05
• 期刊: Journal of environmental management
• 影响因子: 8.7
• 作者: Pallavee Srivastava;Safa Al-Obaidi;G. Webster;A. Weightman;D. Sapsford

Circular economy landfills for temporary storage and treatment of mineral-rich wastes

用于临时储存和处理富含矿物质的废物的循环经济垃圾填埋场

• DOI: 10.1680/jwarm.22.00008
• 发表时间: 2023
• 期刊: Proceedings of the Institution of Civil Engineers - Waste and Resource Management
• 作者: Sapsford D