Greenhouse Gas Removal in the Iron and Steel Industry

钢铁行业温室气体减排

• 批准号: NE/P019943/1
• 负责人: Phil Renforth
• 金额: $ 31.05万
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FP019943%2F1
• 关键词: Greenhouse; Gas; Removal; Iron; Steel

This is a GGR Topic-specific proposalUp to 200 billion tonnes of slag may be produced over the next century as a by-product of the iron and steel industry, which could theoretically sequester up to 90 to 155 billion tonnes of CO2 through enhanced weathering. This proposal explores the exciting possibility of realising an economic greenhouse gas removal technology within an existing industry through the novel management of waste material. We will do this by exploring the internal chemistry of historic slag deposits to understand the long-term constraints on CO2 sequestration, and undertake field trials of CO2 injection into large controlled reactors. Iron and steel slags are a glass/semi-crystalline material rich in silicate and oxide minerals, which dissolve 4-5 orders of magnitude more rapidly compared to their naturally occurring counterparts. These wastes are found as large deposits at current and former steelworks, and represent a considerable environmental liability for producers. By accelerating the weathering of slag, it may be possible to reduce this environmental burden. It also offers a mechanism by which the CO2 intensive steel industry could begin to decarbonise, and ultimately become net negative, if combined with extensive emissions reduction at source.Previous research has demonstrated unintentional atmospheric CO2 sequestration over multiple decades in the drainage waters emerging from slag heaps, and small scale engineered systems have been proposed to carbonate slag under elevated temperatures and pressures. What remains unclear is the feasibility and efficacy of engineering approaches to accelerate ambient weathering to occur in a policy-relevant time period at a relevant scale. This research aims to bridge this gap by demonstrating how such engineering interventions can accelerate the natural weathering processes and provide a means for these industrial residues to act as a major atmospheric CO2 sink.

这是一个GGR主题特定的提案在下一个世纪，作为钢铁工业的副产品，可能会产生多达2000亿吨的炉渣，理论上可以通过增强风化作用封存多达900亿至1550亿吨的二氧化碳。该提案探索了通过废物的新管理在现有行业中实现经济温室气体去除技术的令人兴奋的可能性。我们将通过探索历史炉渣沉积物的内部化学来实现这一目标，以了解二氧化碳封存的长期限制，并进行将二氧化碳注入大型受控反应堆的现场试验。铁和钢渣是富含硅酸盐和氧化物矿物的玻璃/半结晶材料，与天然存在的对应物相比，其溶解速度快4-5个数量级。这些废物在现有和以前的钢铁厂中作为大量沉积物被发现，对生产商来说是相当大的环境责任。通过加速炉渣的风化，有可能减少这种环境负担。它还提供了一种机制，通过这种机制，二氧化碳密集型钢铁工业可以开始脱碳，并最终成为净负，如果结合广泛的减排源。以前的研究已经证明了无意的大气二氧化碳封存在几十年的排水沃茨出现从渣堆，和小规模的工程系统已被提出在高温高压下碳酸化渣。目前尚不清楚的是，在政策相关的时间段内以相关的规模加速环境风化的工程方法的可行性和有效性。这项研究旨在通过展示这种工程干预如何加速自然风化过程来弥合这一差距，并为这些工业残留物作为主要的大气CO2汇提供一种手段。

项目成果

Specialty Grand Challenge: Negative Emission Technologies

专业大挑战：负排放技术

• DOI: 10.3389/fclim.2019.00001
• 发表时间: 2019
• 期刊: Frontiers in Climate
• 作者: Renforth P

The role of soils in the regulation of ocean acidification.

• DOI: 10.1098/rstb.2020.0174
• 发表时间: 2021-09-27
• 期刊: Philosophical transactions of the Royal Society of London. Series B, Biological sciences
• 作者: Renforth P;Campbell JS
• 通讯作者: Campbell JS

Legacy iron and steel wastes in the UK: Extent, resource potential, and management futures

英国遗留钢铁废物：范围、资源潜力和管理前景

• DOI: 10.1016/j.gexplo.2020.106630
• 发表时间: 2020
• 期刊: Journal of Geochemical Exploration
• 影响因子: 3.9
• 作者: Riley A

Atmospheric CO2 Sequestration in Iron and Steel Slag: Consett, County Durham, United Kingdom.

• DOI: 10.1021/acs.est.8b01883
• 发表时间: 2018-06
• 期刊: Environmental science & technology
• 影响因子: 11.4
• 作者: William M. Mayes;A. Riley;Helena I Gomes;Peter Brabham;Joanna Hamlyn;H. Pullin;P. Renforth

The negative emission potential of alkaline materials

• DOI: 10.1038/s41467-019-09475-5
• 发表时间: 2019-03-28
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Renforth, Phil