MATERIALS 5R BY INDUSTRIAL SYMBIOSIS IN THE CEMENT INDUSTRY - UNDERSTANDING METABOLISM OF TOXIC METALS IN CO-PROCESSING

水泥行业工业共生的材料 5R - 了解协同处理中有毒金属的代谢

• 批准号: EP/M00337X/1
• 负责人: Julia Stegemann
• 金额: $ 62.18万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM00337X%2F1
• 关键词: MATERIALS; 5R; INDUSTRIAL; SYMBIOSIS; CEMENT

Portland cement is traditionally manufactured by heating limestone and clay at high temperature in a kiln. On a global scale, cement production is responsible for about 7% of the CO2 emissions that we suspect of causing climate change and consumes more than 5,000,000,000 tonnes of raw materials. In recent years, there has been an increasing trend towards replacing both the fuels and minerals used in cement production with industrial wastes. This practice helps to conserve both fossil fuels and natural mineral resources. In general, wastes now fed to the cement kiln contain mainly combustible materials and the same harmless elements that are present in natural cement raw materials, so there is no undesirable effect on cement quality or the environment. However, it has been suggested that some wastes containing toxic metals could be used in cement kilns, and we need to know more about what happens to these potential pollutants during cement production and use, to decide whether such wastes can safely be added in the cement kiln. This collaboration between researchers in Environmental Engineering at University College London in the UK and Materials Scientists at the China Building Materials Academy and South China University of Technology therefore aims to conduct a scientific study of the fate and behaviour of toxic metals from untreated wastes, through the cement kiln, to hydrated cement pastes and the environment. We will use advanced techniques for chemical analysis and materials characterisation, including x-ray absorption spectroscopy with high energy x-rays from the UK's Diamond Light Source, and the Beijing Synchrotron, to see how the form of metals changes as they pass through the kiln and when water is added to the cement, and to understand how much metal-bearing waste can safely be added before undesirable effects occur. The new understanding gained in this work will support decision-making by industry and the government, about the use of waste in making cement.

波特兰水泥传统上是通过在窑中在高温下加热石灰石和粘土来制造的。在全球范围内，水泥生产约占我们怀疑导致气候变化的二氧化碳排放量的7%，并消耗超过50亿吨原材料。近年来，用工业废料取代水泥生产中使用的燃料和矿物的趋势日益明显。这种做法有助于保护化石燃料和天然矿物资源。一般而言，目前送入水泥窑的废物主要含有可燃材料和天然水泥原料中存在的相同无害元素，因此对水泥质量或环境没有不良影响。然而，有人提出，一些含有有毒金属的废物可以在水泥窑中使用，我们需要更多地了解这些潜在污染物在水泥生产和使用过程中发生的变化，以决定这些废物是否可以安全地加入水泥窑。因此，英国伦敦大学学院环境工程专业的研究人员与中国建筑材料研究院和华南理工大学的材料科学家合作，旨在对未经处理的废物中有毒金属的归宿和行为进行科学研究，通过水泥窑，水合水泥浆和环境。我们将使用先进的化学分析和材料表征技术，包括来自英国钻石光源和北京同步加速器的高能X射线的X射线吸收光谱，以了解金属在通过窑时以及在水泥中加水时的形式如何变化，并了解在发生不良影响之前可以安全地添加多少含金属废物。 在这项工作中获得的新认识将支持工业和政府关于利用废物制造水泥的决策。

项目成果

Effects of washing energy-from-waste air pollution control residue on composition and speciation of Pb and Zn

大气污染防治残渣洗涤能源对Pb、Zn组成和形态的影响

• 发表时间: 2018
• 作者: Bogush AA

Co-processing of Energy-from-Waste Air Pollution Control Residue in the Cement Kiln as a Potential Recycling Option

在水泥窑中协同处理空气污染控制废弃物能源作为潜在的回收选择

• 发表时间: 2017
• 作者: Bogush AA

Potential Utilization of Air Pollution Control Residue from Municipal Solid Waste Incineration Facility in the Cement Industry

城市生活垃圾焚烧设施空气污染治理残渣在水泥行业的潜在利用

• 发表时间: 2017
• 作者: Bogush AA

Changes in Composition and Mineralogy of Energy-from Waste Air Pollution Control Residues due to Water Washing

水洗废气污染控制残渣能量成分和矿物学的变化

• 发表时间: 2016
• 作者: Bogush AA

Co-processing of raw and washed air pollution control residues from energy-from-waste facilities in the cement kiln

• DOI: 10.1016/j.jclepro.2019.119924
• 发表时间: 2020-05-01
• 期刊: JOURNAL OF CLEANER PRODUCTION
• 影响因子: 11.1
• 作者: Bogush, Anna A.;Stegemann, Julia A.;Wei, Jiangxiong
• 通讯作者: Wei, Jiangxiong