Cleaner Materials最新文献

Applications of ionic Liquids: Fate, Prospects, and Perspectives 离子液体的应用：命运、前景与展望

IF 9

Cleaner Materials

Pub Date : 2026-01-28 DOI: 10.1016/j.clema.2026.100379

Ayo Olasupo , David R. Corbin , Mark B. Shiflett

The unique physicochemical properties and versatility of ionic liquids have earned them names like “green solvents, designer solvents, and solvents for the future”. Ionic liquids have been widely used as alternatives to traditional solvents for different applications. Ionic liquids are organic containing salts with melting points below 100 °C, comprised of tunable cations and anions that have found relevance in industrial applications such as separations, nanotechnology, electrochemistry, catalysis, and analytical chemistry, to name a few. However, despite the ubiquitous applications across various industries, there is a paucity of information about the toxicity, environmental impact, and potential impacts to public health. Hence, in this study, the various applications of ionic liquids at bench-, pilot-, and industrial-scales have been elucidated based on fate in the ecosystem and toxicity to plants, animals, and humans. The literature review has also included a life cycle assessment of ionic liquid processes. Limitations such as cost, synthesis, energy, and environmental impacts associated with using ionic liquids as alternative solvents for industrial applications were also identified; especially, the early generations of ionic liquids. Finally, this study has proposed strategies for synthesizing the next generation of ionic liquids with low toxicity, high biodegradability, low cost, and low environmental impact.

离子液体独特的物理化学性质和多功能性为它们赢得了“绿色溶剂、设计溶剂和未来溶剂”等称号。离子液体作为传统溶剂的替代品被广泛应用于不同的领域。离子液体是一种有机盐，熔点低于100°C，由可调阳离子和阴离子组成，在分离、纳米技术、电化学、催化和分析化学等工业应用中都有应用。然而，尽管在各个行业中都有广泛的应用，但关于其毒性、环境影响和对公众健康的潜在影响的信息却很少。因此，在本研究中，离子液体在实验、中试和工业规模上的各种应用已经根据其在生态系统中的命运和对植物、动物和人类的毒性进行了阐述。文献综述还包括离子液体过程的生命周期评估。还确定了使用离子液体作为工业应用的替代溶剂的成本、合成、能源和环境影响等限制；尤其是早期的离子液体。最后，本研究提出了低毒性、高生物降解性、低成本、低环境影响的新一代离子液体的合成策略。

{"title":"Applications of ionic Liquids: Fate, Prospects, and Perspectives","authors":"Ayo Olasupo , David R. Corbin , Mark B. Shiflett","doi":"10.1016/j.clema.2026.100379","DOIUrl":"10.1016/j.clema.2026.100379","url":null,"abstract":"<div><div>The unique physicochemical properties and versatility of ionic liquids have earned them names like “green solvents, designer solvents, and solvents for the future”. Ionic liquids have been widely used as alternatives to traditional solvents for different applications. Ionic liquids are organic containing salts with melting points below 100 °C, comprised of tunable cations and anions that have found relevance in industrial applications such as separations, nanotechnology, electrochemistry, catalysis, and analytical chemistry, to name a few. However, despite the ubiquitous applications across various industries, there is a paucity of information about the toxicity, environmental impact, and potential impacts to public health. Hence, in this study, the various applications of ionic liquids at bench-, pilot-, and industrial-scales have been elucidated based on fate in the ecosystem and toxicity to plants, animals, and humans. The literature review has also included a life cycle assessment of ionic liquid processes. Limitations such as cost, synthesis, energy, and environmental impacts associated with using ionic liquids as alternative solvents for industrial applications were also identified; especially, the early generations of ionic liquids. Finally, this study has proposed strategies for synthesizing the next generation of ionic liquids with low toxicity, high biodegradability, low cost, and low environmental impact.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100379"},"PeriodicalIF":9.0,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How chitosan-clay-based coatings contribute to improved poly(lactic acid) (PLA) film properties 壳聚糖粘土基涂层如何改善聚乳酸（PLA）薄膜的性能

IF 9

Cleaner Materials

Pub Date : 2026-01-18 DOI: 10.1016/j.clema.2026.100377

Meriem Fadhel , Clément Poulain , Claire-Hélène Brachais , Rafaela Rendón , Julio Bruna , Alejandra Torres-Mediano , Frédéric Debeaufort , Francisco Rodríguez-Mercado , Nasreddine Benbettaieb

The feasibility of chitosan and montmorillonite (Cloisite-Na⁺) coatings as an alternative oxygen barrier material to biodegradable commercial films (polylactic acid, PLA) was investigated. This work aimed at understanding how active chitosan coatings could affect the functional properties of the PLA films. Moreover, chitosan-based coatings also serve as a support for bioactive molecules. The application of these coatings when containing allyl isothiocyanate (AITC) as an antimicrobial agent, is proved as an efficient active releasing system. PLA films were prepared by cast extrusion process and corona treated prior to being coated by chitosan-Cloisite-Na⁺ suspensions. The incorporation of Cloisite-Na⁺ and/or AITC into chitosan coating increased the oxygen barrier efficacy of PLA films by almost 10 folds. Indeed, the tortuosity of the diffusion path for oxygen molecules, thanks to the nanoclays dispersion, was highly increased. The water vapor permeability of the coated film was not degraded by the hydrophilic character of the chitosan-based layer. FTIR spectra revealed intermolecular interactions between AITC, chitosan and cloisite explaining the improved properties. The release diffusivity of AITC from the chitosan layer without Cloisite-Na⁺ was almost 10000 times higher than that of film containing the Cloisite-Na⁺ at 10%. These active coatings using chitosan is a promising way to improve barrier and functional properties of commercial PLA films.

研究了壳聚糖和蒙脱土（Cloisite-Na+）涂层作为生物可降解商业膜（聚乳酸，PLA）替代氧屏障材料的可行性。本工作旨在了解活性壳聚糖涂层如何影响聚乳酸膜的功能特性。此外，壳聚糖基涂层还可以作为生物活性分子的支撑。应用于含异硫氰酸烯丙酯（AITC）的抗菌涂料，是一种高效的活性释放体系。采用铸造挤压法制备了聚乳酸薄膜，并对其进行电晕处理，然后涂覆壳聚糖- cloiste - na +悬浮液。在壳聚糖涂层中掺入Cloisite-Na+和/或AITC， PLA膜的阻氧效能提高了近10倍。事实上，由于纳米粘土的分散，氧分子扩散路径的扭曲度大大增加。壳聚糖基涂层的亲水性不会降低涂层的透气性。FTIR光谱显示了AITC、壳聚糖和closite之间的分子间相互作用，解释了其性能的改善。在不含Cloisite-Na+的壳聚糖层中，AITC的释放扩散率几乎是含Cloisite-Na+的壳聚糖膜的10000倍。壳聚糖活性涂层是一种很有前途的改善商品聚乳酸薄膜阻隔性和功能性能的方法。

{"title":"How chitosan-clay-based coatings contribute to improved poly(lactic acid) (PLA) film properties","authors":"Meriem Fadhel , Clément Poulain , Claire-Hélène Brachais , Rafaela Rendón , Julio Bruna , Alejandra Torres-Mediano , Frédéric Debeaufort , Francisco Rodríguez-Mercado , Nasreddine Benbettaieb","doi":"10.1016/j.clema.2026.100377","DOIUrl":"10.1016/j.clema.2026.100377","url":null,"abstract":"<div><div>The feasibility of chitosan and montmorillonite (Cloisite-Na<sup>+</sup>) coatings as an alternative oxygen barrier material to biodegradable commercial films (polylactic acid, PLA) was investigated. This work aimed at understanding how active chitosan coatings could affect the functional properties of the PLA films. Moreover, chitosan-based coatings also serve as a support for bioactive molecules. The application of these coatings when containing allyl isothiocyanate (AITC) as an antimicrobial agent, is proved as an efficient active releasing system. PLA films were prepared by cast extrusion process and corona treated prior to being coated by chitosan-Cloisite-Na<sup>+</sup> suspensions. The incorporation of Cloisite-Na<sup>+</sup> and/or AITC into chitosan coating increased the oxygen barrier efficacy of PLA films by almost 10 folds. Indeed, the tortuosity of the diffusion path for oxygen molecules, thanks to the nanoclays dispersion, was highly increased. The water vapor permeability of the coated film was not degraded by the hydrophilic character of the chitosan-based layer. FTIR spectra revealed intermolecular interactions between AITC, chitosan and cloisite explaining the improved properties. The release diffusivity of AITC from the chitosan layer without Cloisite-Na<sup>+</sup> was almost 10000 times higher than that of film containing the Cloisite-Na<sup>+</sup> at 10%. These active coatings using chitosan is a promising way to improve barrier and functional properties of commercial PLA films.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100377"},"PeriodicalIF":9.0,"publicationDate":"2026-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High speed carbon dioxide degenerative reaction in Electric/Microwave arc plasma with metal-induced carbon deposition: Onsite carbon capture 电/微波电弧等离子体中高速二氧化碳退化反应与金属诱导碳沉积：现场碳捕获

IF 9

Cleaner Materials

Pub Date : 2026-01-13 DOI: 10.1016/j.clema.2026.100376

Kittikhun Khotmungkhun , Arkorn Chotiyasilp , Nutbongkot Srisukkho , Kittitat Subannajui

In order to avoid the complicated process of capturing carbon dioxide (CO₂) and embedding it underground, a fast CO₂ capture technique that allows for onsite elimination is required. This study investigates the potential of using electric/microwave arc plasma with metals to enhance CO₂ decomposition, which normally does not occur without ionization. The research explores the rapid interactions between various metals and CO₂ under atmospheric pressure. In the experimental setup, metals such as gold, copper, aluminum, magnesium, iron, zinc, titanium, and tungsten are exposed to microwaves to induce arc plasma in a controlled chamber. These interactions are analyzed using advanced characterization techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy, UV–Vis spectroscopy, and photoluminescence (PL) spectroscopy. Gas amount and content are monitored via gas chromatography (GC). The results show that microwave arc plasma effectively disintegrates CO₂, converting it into carbon and carbide. With rapid CO₂ disintegration and metal-induced carbon separation, several metals can be used. While Titanium (Ti) exhibited the fastest reduction rate, Tungsten (W) was identified as the most durable candidate due to its superior thermal stability and resistance to degradation. These findings suggest that electric/microwave arc plasma technology presents a promising and efficient method for CO₂ reduction, with potential implications for climate change mitigation strategies.

为了避免捕获二氧化碳并将其埋入地下的复杂过程，需要一种能够现场消除的快速二氧化碳捕获技术。这项研究探讨了使用电/微波电弧等离子体与金属来增强二氧化碳分解的潜力，这通常不会在没有电离的情况下发生。该研究探索了大气压力下各种金属与二氧化碳之间的快速相互作用。在实验装置中，金、铜、铝、镁、铁、锌、钛和钨等金属在受控室中暴露于微波中以诱导电弧等离子体。这些相互作用分析使用先进的表征技术，如扫描电子显微镜（SEM），透射电子显微镜（TEM），能量色散x射线光谱学（EDX），拉曼光谱，紫外-可见光谱，光致发光（PL）光谱。气相色谱法（GC）监测气体量和含量。结果表明，微波电弧等离子体能有效分解CO2，将其转化为碳和碳化物。随着二氧化碳的快速分解和金属诱导的碳分离，可以使用几种金属。钛（Ti）表现出最快的还原速率，而钨(W)由于其优异的热稳定性和抗降解性而被认为是最耐用的候选材料。这些发现表明，电/微波电弧等离子体技术是一种有前景的、有效的二氧化碳减排方法，对减缓气候变化战略具有潜在影响。

{"title":"High speed carbon dioxide degenerative reaction in Electric/Microwave arc plasma with metal-induced carbon deposition: Onsite carbon capture","authors":"Kittikhun Khotmungkhun , Arkorn Chotiyasilp , Nutbongkot Srisukkho , Kittitat Subannajui","doi":"10.1016/j.clema.2026.100376","DOIUrl":"10.1016/j.clema.2026.100376","url":null,"abstract":"<div><div>In order to avoid the complicated process of capturing carbon dioxide (CO<sub>2</sub>) and embedding it underground, a fast CO<sub>2</sub> capture technique that allows for onsite elimination is required. This study investigates the potential of using electric/microwave arc plasma with metals to enhance CO<sub>2</sub> decomposition, which normally does not occur without ionization. The research explores the rapid interactions between various metals and CO<sub>2</sub> under atmospheric pressure. In the experimental setup, metals such as gold, copper, aluminum, magnesium, iron, zinc, titanium, and tungsten are exposed to microwaves to induce arc plasma in a controlled chamber. These interactions are analyzed using advanced characterization techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy, UV–Vis spectroscopy, and photoluminescence (PL) spectroscopy. Gas amount and content are monitored via gas chromatography (GC). The results show that microwave arc plasma effectively disintegrates CO<sub>2</sub>, converting it into carbon and carbide. With rapid CO<sub>2</sub> disintegration and metal-induced carbon separation, several metals can be used. While Titanium (Ti) exhibited the fastest reduction rate, Tungsten (W) was identified as the most durable candidate due to its superior thermal stability and resistance to degradation. These findings suggest that electric/microwave arc plasma technology presents a promising and efficient method for CO<sub>2</sub> reduction, with potential implications for climate change mitigation strategies.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100376"},"PeriodicalIF":9.0,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Canaries nest-inspired assembly of organic-inorganic networks for shotcrete: A rapid setting and hardening strategy via biomimetic design 以金丝雀巢为灵感的喷射混凝土有机-无机网络组合：通过仿生设计的快速设置和硬化策略

IF 9

Cleaner Materials

Pub Date : 2026-01-08 DOI: 10.1016/j.clema.2026.100375

Zhenqi Yu , Xin Liu , Hui Xie , Lijing Shao , Yi Zhang , Haochuan Wang , Wei Wang , Jinxiang Hong , Pan Feng

Shotcrete is a critical lining material for tunnel constructions. However, previous studies have struggled to simultaneously achieve excellent workability, rapid-setting, high early-strength and superior toughness. Inspired by nest-building behavior of canaries, this study integrates in-situ polymerization with the alkali-free accelerator (AC) to rapidly construct an organic–inorganic skeleton and optimize early-age performance. The results indicated that in-situ polymerization improved the workability of the mortar within 1 h. Hydration kinetic analysis demonstrated that AC promoted ettringite formation and released heat, triggering monomer polymerization. The polymerization process further enhanced cement hydration, generating a mutual activation effect. This synergy reduced the percolation threshold, significantly shortening the setting time. The accelerated hydration subsequently produced “mud-like” hydration products that filled the pore structure, resulting in a denser matrix. Consequently, the 6 h compressive strength reached 2.7 MPa, representing an 800 % increase compared with the Con, and the flexural strength exhibited remarkable improvements of 400 %, 84 %, and 22 % after 6 h, 1 d and 28 d of hydration, respectively. This study provides a novel strategy for designing high-performance shotcrete and promoting the high-quality development of tunnel constructions.

喷射混凝土是隧道施工中重要的衬砌材料。然而，以往的研究一直在努力同时实现优异的加工性、快速凝固、高早期强度和优异的韧性。受金丝雀筑巢行为的启发，本研究将原位聚合与无碱促进剂（AC）相结合，快速构建有机-无机骨架并优化早期性能。结果表明，原位聚合在1 h内改善了砂浆的和易性。水化动力学分析表明，AC促进钙矾石形成并释放热量，引发单体聚合。聚合过程进一步增强了水泥水化，产生了相互活化的效果。这种协同作用降低了渗透阈值，显著缩短了凝固时间。加速的水化作用随后产生“泥状”水化产物，填充孔隙结构，形成更致密的基质。结果表明，6 h抗压强度达到2.7 MPa，比Con提高了800%，水化6 h、1 d和28 d后，抗弯强度分别提高了400%、84%和22%。本研究为设计高性能喷射混凝土，促进隧道施工的高质量发展提供了新的策略。

{"title":"Canaries nest-inspired assembly of organic-inorganic networks for shotcrete: A rapid setting and hardening strategy via biomimetic design","authors":"Zhenqi Yu , Xin Liu , Hui Xie , Lijing Shao , Yi Zhang , Haochuan Wang , Wei Wang , Jinxiang Hong , Pan Feng","doi":"10.1016/j.clema.2026.100375","DOIUrl":"10.1016/j.clema.2026.100375","url":null,"abstract":"<div><div>Shotcrete is a critical lining material for tunnel constructions. However, previous studies have struggled to simultaneously achieve excellent workability, rapid-setting, high early-strength and superior toughness. Inspired by nest-building behavior of canaries, this study integrates in-situ polymerization with the alkali-free accelerator (AC) to rapidly construct an organic–inorganic skeleton and optimize early-age performance. The results indicated that in-situ polymerization improved the workability of the mortar within 1 h. Hydration kinetic analysis demonstrated that AC promoted ettringite formation and released heat, triggering monomer polymerization. The polymerization process further enhanced cement hydration, generating a mutual activation effect. This synergy reduced the percolation threshold, significantly shortening the setting time. The accelerated hydration subsequently produced “mud-like” hydration products that filled the pore structure, resulting in a denser matrix. Consequently, the 6 h compressive strength reached 2.7 MPa, representing an 800 % increase compared with the Con, and the flexural strength exhibited remarkable improvements of 400 %, 84 %, and 22 % after 6 h, 1 d and 28 d of hydration, respectively. This study provides a novel strategy for designing high-performance shotcrete and promoting the high-quality development of tunnel constructions.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100375"},"PeriodicalIF":9.0,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review in calcium carbide slag utilization for carbonation: from methods to applications 电石渣用于碳化的研究进展：从方法到应用

IF 9

Cleaner Materials

Pub Date : 2026-01-07 DOI: 10.1016/j.clema.2026.100374

Wenjie Gong , Peiliang Shen , Yanjie Tang , Fazhou Wang

Global CO₂ emissions, exceeding 40 billion tonnes annually, drive critical ecological challenges, necessitating effective mitigation strategies like carbon capture, utilization, and storage (CCUS). CO₂ mineralization, a promising CCUS pathway, utilizes alkali-rich industrial wastes such as carbide slag (CS) to form stable carbonate minerals, ensuring permanent CO₂ sequestration with minimal leakage risks. CS, primarily composed of Ca(OH)₂, offers high alkalinity and calcium content, making it an ideal precursor for CO₂ mineralization. Various carbonation methods, including direct, indirect and advanced techniques, could produce construction materials, high-value nano-calcium carbonates and energy storage solutions. Operational parameters such as temperature, concentration, humidity, and additives significantly influence carbonation efficiency and product properties. Direct carbonation yields CaCO₃ suitable for large-scale industrial uses, while indirect and advanced methods enhance product purity and functionality for specialized applications. This integration sequesters CO₂ while producing valuable by-products, thereby enhancing economic viability. This article provides a comprehensive analysis of CS carbonation mechanisms, methods, and applications, emphasizing the interplay between process parameters and product outcomes to optimize sustainable CO₂ management and material innovation.

全球二氧化碳排放量每年超过400亿吨，造成严重的生态挑战，需要采取有效的减缓战略，如碳捕集、利用和封存（CCUS）。二氧化碳矿化是一种很有前途的CCUS途径，它利用电石渣（CS）等富含碱的工业废料形成稳定的碳酸盐矿物，以最小的泄漏风险确保二氧化碳的永久封存。CS主要由Ca(OH)2组成，具有较高的碱度和钙含量，是理想的CO2矿化前体。各种碳化方法，包括直接、间接和先进的技术，可以生产建筑材料、高价值的纳米碳酸钙和储能解决方案。操作参数，如温度、浓度、湿度和添加剂显著影响碳化效率和产品性能。直接碳化生产CaCO3适用于大规模工业用途，而间接和先进的方法提高产品纯度和功能的专门应用。这种整合在产生有价值的副产品的同时隔离了二氧化碳，从而提高了经济可行性。本文全面分析了CS碳化的机理、方法和应用，强调了工艺参数和产品结果之间的相互作用，以优化可持续的二氧化碳管理和材料创新。

{"title":"A review in calcium carbide slag utilization for carbonation: from methods to applications","authors":"Wenjie Gong , Peiliang Shen , Yanjie Tang , Fazhou Wang","doi":"10.1016/j.clema.2026.100374","DOIUrl":"10.1016/j.clema.2026.100374","url":null,"abstract":"<div><div>Global CO<sub>2</sub> emissions, exceeding 40 billion tonnes annually, drive critical ecological challenges, necessitating effective mitigation strategies like carbon capture, utilization, and storage (CCUS). CO<sub>2</sub> mineralization, a promising CCUS pathway, utilizes alkali-rich industrial wastes such as carbide slag (CS) to form stable carbonate minerals, ensuring permanent CO<sub>2</sub> sequestration with minimal leakage risks. CS, primarily composed of Ca(OH)<sub>2</sub>, offers high alkalinity and calcium content, making it an ideal precursor for CO<sub>2</sub> mineralization. Various carbonation methods, including direct, indirect and advanced techniques, could produce construction materials, high-value nano-calcium carbonates and energy storage solutions. Operational parameters such as temperature, concentration, humidity, and additives significantly influence carbonation efficiency and product properties. Direct carbonation yields CaCO<sub>3</sub> suitable for large-scale industrial uses, while indirect and advanced methods enhance product purity and functionality for specialized applications. This integration sequesters CO<sub>2</sub> while producing valuable by-products, thereby enhancing economic viability. This article provides a comprehensive analysis of CS carbonation mechanisms, methods, and applications, emphasizing the interplay between process parameters and product outcomes to optimize sustainable CO<sub>2</sub> management and material innovation.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100374"},"PeriodicalIF":9.0,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alkali–silicate–aluminate synergistic hydration mechanisms for enhanced strength development in high-volume lithium slag cement 高容量锂矿渣水泥增强强度发展的碱硅酸盐铝酸盐协同水化机制

IF 9

Cleaner Materials

Pub Date : 2026-01-06 DOI: 10.1016/j.clema.2026.100368

Yantong Zhao , Chunyang Cui , Fuqiang Gao , Qingxin Qi , Zeyu Liu , Xiang Ma , Xi Jiang

Lithium slag (LS) demonstrates synergistic reactivity and element complementarity in cement systems. However, LS exhibits low pozzolanic reactivity when blended with ordinary Portland cement (PC). This study designed a new kind of cleaner cementitious material via solid-waste and low-alkalinity activation. Four possible low-alkali activators were investigated: calcium aluminate (CA), sodium aluminosilicate (SS), sodium carbonate (SC), and sodium aluminate (SA), as well as their combinations for activating high-volume lithium slag cement (HVLSC) via microstructural evolution. Results indicate that the SS–SA considerably enhances C–(A)–S–H and N–A–S–H co-gel formation and promotes ettringite (AFt) nucleation, increasing compressive strength by 306 %, 123 %, and 108 % after 7, 14, and 21 days, respectively. The SC activator reduces fluidity in SC systems because CO₃²⁻ induces CaCO₃ precipitation. The SS–SA exhibits the best strength enhancing effect by leveraging the synergy of the Na⁺–SiO₃²⁻–AlO₂⁻ ternary system. This synergy optimizes the density of the gel network and considerably enhances the strength of HVLSC and reduces CO₂ emissions per unit strength by 52.2 % of the carbon dioxide emission per unit strength.

锂渣（LS）在水泥体系中表现出协同反应性和元素互补性。与普通硅酸盐水泥（PC）混合后，LS表现出较低的火山灰反应性。本研究设计了一种采用固废低碱度活化的新型清洁胶凝材料。研究了四种可能的低碱活化剂：铝酸钙（CA）、铝硅酸钠（SS）、碳酸钠（SC）和铝酸钠（SA），以及它们通过微观结构演化对高容量锂渣水泥（HVLSC）的活化作用。结果表明，SS-SA显著增强了C - (A) - s - h和N-A-S-H共凝胶的形成，促进钙矾石（AFt）成核，在7、14和21天后，抗压强度分别提高了306%、123%和108%。由于CO32−诱导CaCO3沉淀，SC活化剂降低了SC体系的流动性。利用Na+ -SiO32−-AlO2−三元体系的协同作用，SS-SA表现出最佳的强度增强效果。这种协同作用优化了凝胶网络的密度，大大提高了HVLSC的强度，并将单位强度的二氧化碳排放量降低了52.2%。

{"title":"Alkali–silicate–aluminate synergistic hydration mechanisms for enhanced strength development in high-volume lithium slag cement","authors":"Yantong Zhao , Chunyang Cui , Fuqiang Gao , Qingxin Qi , Zeyu Liu , Xiang Ma , Xi Jiang","doi":"10.1016/j.clema.2026.100368","DOIUrl":"10.1016/j.clema.2026.100368","url":null,"abstract":"<div><div>Lithium slag (LS) demonstrates synergistic reactivity and element complementarity in cement systems. However, LS exhibits low pozzolanic reactivity when blended with ordinary Portland cement (PC). This study designed a new kind of cleaner cementitious material via solid-waste and low-alkalinity activation. Four possible low-alkali activators were investigated: calcium aluminate (CA), sodium aluminosilicate (SS), sodium carbonate (SC), and sodium aluminate (SA), as well as their combinations for activating high-volume lithium slag cement (HVLSC) via microstructural evolution. Results indicate that the SS–SA considerably enhances C–(A)–S–H and N–A–S–H co-gel formation and promotes ettringite (AFt) nucleation, increasing compressive strength by 306 %, 123 %, and 108 % after 7, 14, and 21 days, respectively. The SC activator reduces fluidity in SC systems because CO<sub>3</sub><sup>2−</sup> induces CaCO<sub>3</sub> precipitation. The SS–SA exhibits the best strength enhancing effect by leveraging the synergy of the Na<sup>+</sup>–SiO<sub>3</sub><sup>2−</sup>–AlO<sub>2</sub><sup>−</sup> ternary system. This synergy optimizes the density of the gel network and considerably enhances the strength of HVLSC and reduces CO<sub>2</sub> emissions per unit strength by 52.2 % of the carbon dioxide emission per unit strength.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100368"},"PeriodicalIF":9.0,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145926153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multifunctional performance assessment of insulation panels from recycled textiles and Kenaf/Hemp Fibers: thermal, acoustic, and fire behavior 由回收纺织品和红麻/大麻纤维制成的隔热板的多功能性能评估：热学、声学和防火行为

IF 9

Cleaner Materials

Pub Date : 2026-01-02 DOI: 10.1016/j.clema.2026.100373

Jan Kašpar , Giada Kyaw Oo D’Amore , Jessica Ferrari , Enrico Armelloni , Vincenzo Ballerini , Paolo Valdiserri , Eugenia Rossi di Schio , Mariagrazia Pilotelli , Hossein Soltanian , Manuela Neri

Although natural and recycled fibre-based insulation materials show promising thermal and acoustic performance, several challenges still limit their widespread adoption. This paper explores the properties and potential of recycled textile and natural fiber-based materials in enhancing building renovations. Specifically, it examines two types of insulation panels: those made from recycled textiles (Panels M) and those composed of kenaf and hemp fibers (Panels K). The study investigates various properties, including composition, density, thermal conductivity, acoustic performance, and fire response, highlighting the strengths and challenges associated with each material. The results reveal that while textile-based panels exhibit more variability in composition and performance, natural fiber panels are more uniform, making them a more predictable and reliable option. Thermal conductivity values ranged from 0.035 to 0.049 W/(m·K), with the natural fiber panels showing more consistent results. Acoustic performance, evaluated using both Sonocat sensor and the impedance tube also varied, with textile-based panel M45 performing particularly well approaching the Basotect performance (this latter used as a functional benchmark). Fire response, tested using Temperature Programmed Oxidation (TPO), indicated that kenaf-based panels demonstrated higher flammability compared to their textile counterparts. Furthermore, the study explored the effectiveness of fire retardants, finding that certain treatments helped suppress ignition.

尽管天然和再生纤维基绝缘材料表现出良好的热学和声学性能，但一些挑战仍然限制了它们的广泛应用。本文探讨了再生纺织品和天然纤维基材料在加强建筑改造方面的性能和潜力。具体来说，它检查了两种类型的绝缘板：由回收纺织品制成的（板M）和由红麻和大麻纤维组成的（板K）。该研究调查了各种性能，包括成分、密度、导热性、声学性能和火灾响应，突出了每种材料的优势和挑战。结果表明，虽然基于纺织品的面板在成分和性能上表现出更多的可变性，但天然纤维面板更加均匀，使其成为更可预测和可靠的选择。导热系数范围为0.035 ~ 0.049 W/(m·K)，与天然纤维板的结果更为一致。使用Sonocat传感器和阻抗管评估的声学性能也有所不同，基于纺织品的面板M45的性能特别好，接近Basotect的性能（后者用作功能基准）。使用温度程序化氧化（TPO）测试的火灾反应表明，与同类纺织品相比，红麻基板表现出更高的可燃性。此外，该研究还探讨了阻燃剂的有效性，发现某些处理方法有助于抑制着火。

{"title":"Multifunctional performance assessment of insulation panels from recycled textiles and Kenaf/Hemp Fibers: thermal, acoustic, and fire behavior","authors":"Jan Kašpar , Giada Kyaw Oo D’Amore , Jessica Ferrari , Enrico Armelloni , Vincenzo Ballerini , Paolo Valdiserri , Eugenia Rossi di Schio , Mariagrazia Pilotelli , Hossein Soltanian , Manuela Neri","doi":"10.1016/j.clema.2026.100373","DOIUrl":"10.1016/j.clema.2026.100373","url":null,"abstract":"<div><div>Although natural and recycled fibre-based insulation materials show promising thermal and acoustic performance, several challenges still limit their widespread adoption. This paper explores the properties and potential of recycled textile and natural fiber-based materials in enhancing building renovations. Specifically, it examines two types of insulation panels: those made from recycled textiles (Panels M) and those composed of kenaf and hemp fibers (Panels K). The study investigates various properties, including composition, density, thermal conductivity, acoustic performance, and fire response, highlighting the strengths and challenges associated with each material. The results reveal that while textile-based panels exhibit more variability in composition and performance, natural fiber panels are more uniform, making them a more predictable and reliable option. Thermal conductivity values ranged from 0.035 to 0.049 W/(m·K), with the natural fiber panels showing more consistent results. Acoustic performance, evaluated using both Sonocat sensor and the impedance tube also varied, with textile-based panel M45 performing particularly well approaching the Basotect performance (this latter used as a functional benchmark). Fire response, tested using Temperature Programmed Oxidation (TPO), indicated that kenaf-based panels demonstrated higher flammability compared to their textile counterparts. Furthermore, the study explored the effectiveness of fire retardants, finding that certain treatments helped suppress ignition.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100373"},"PeriodicalIF":9.0,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145926151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Feasibility of preparing the stable high-content rubber modified asphalt with low mooney viscosity crumb rubber powder: formulation design and modification mechanism 用低门尼粘度胶粉制备稳定高含量橡胶改性沥青的可行性：配方设计及改性机理

IF 9

Cleaner Materials

Pub Date : 2026-01-02 DOI: 10.1016/j.clema.2026.100372

Xintong Cheng , Ruibo Ren , Peng Wang , Qidong Zheng , Fei Zhai , Haiyu Wang , Lu Li , Jinwei Zhao , Han Chen , Jiahui Li

High-content rubber-modified asphalt (HC-RMA), incorporating over 25 % waste tire rubber powder, delivers environmental sustainability alongside enhanced pavement performance. However, a rubber content exceeding 30 % typically induces excessive viscosity and phase separation. To address these issues, HC-RMA samples were prepared using rubber powder with Mooney viscosities ranging from 40 to 120 MU. Among these, the binder containing 40 % rubber powder with 40 MU viscosity (CR40D) showed a practical viscosity of 1.34 Pa s at 180 °C and demonstrated superior performance, including enhanced high-temperature rutting resistance and improved low-temperature crack resistance. Microscopic analyses (CLSM and AFM) combined with Delaunay triangulation confirmed that the CR40D formulation promoted the formation of a uniform, dense rubber particle network with increased crosslinking density. Molecular dynamics (MD) simulations identified a critical rubber content of 40 % by mass, at which optimal binder compatibility and the strongest intermolecular interactions (van der Waals forces up to 5.4 kJ/mol) were observed. Further increases in rubber content led to a notable decline in these interactions. In conclusion, incorporating 40 % low-Mooney-viscosity (40 MU) rubber powder optimizes the performance of HC-RMA. The resulting material is a high-performance, cost-effective, and eco-friendly paving binder with strong potential for sustainable road construction.

高含量橡胶改性沥青（HC-RMA），含有超过25%的废轮胎橡胶粉，在提高路面性能的同时实现了环境的可持续性。然而，橡胶含量超过30%通常会导致过度的粘度和相分离。为了解决这些问题，HC-RMA样品的制备使用了黏度为40 - 120 MU的胶粉。其中，含有40%黏度为40 MU的胶粉（CR40D）的粘结剂在180℃时的实际黏度为1.34 Pa s，表现出优异的性能，包括增强了高温车辙性能和提高了低温抗裂性能。微观分析（CLSM和AFM）结合Delaunay三角测量证实，CR40D配方促进了均匀、致密的橡胶颗粒网络的形成，并增加了交联密度。分子动力学（MD）模拟发现，当橡胶质量比为40%时，粘合剂相容性最佳，分子间相互作用最强（范德瓦尔斯力高达5.4 kJ/mol）。橡胶含量的进一步增加导致这些相互作用的显著下降。综上所述，添加40%低穆尼粘度（40 MU）的胶粉可优化HC-RMA的性能。由此产生的材料是一种高性能，具有成本效益和环保的铺装粘合剂，具有可持续道路建设的强大潜力。

{"title":"Feasibility of preparing the stable high-content rubber modified asphalt with low mooney viscosity crumb rubber powder: formulation design and modification mechanism","authors":"Xintong Cheng , Ruibo Ren , Peng Wang , Qidong Zheng , Fei Zhai , Haiyu Wang , Lu Li , Jinwei Zhao , Han Chen , Jiahui Li","doi":"10.1016/j.clema.2026.100372","DOIUrl":"10.1016/j.clema.2026.100372","url":null,"abstract":"<div><div>High-content rubber-modified asphalt (HC-RMA), incorporating over 25 % waste tire rubber powder, delivers environmental sustainability alongside enhanced pavement performance. However, a rubber content exceeding 30 % typically induces excessive viscosity and phase separation. To address these issues, HC-RMA samples were prepared using rubber powder with Mooney viscosities ranging from 40 to 120 MU. Among these, the binder containing 40 % rubber powder with 40 MU viscosity (CR40D) showed a practical viscosity of 1.34 Pa s at 180 °C and demonstrated superior performance, including enhanced high-temperature rutting resistance and improved low-temperature crack resistance. Microscopic analyses (CLSM and AFM) combined with Delaunay triangulation confirmed that the CR40D formulation promoted the formation of a uniform, dense rubber particle network with increased crosslinking density. Molecular dynamics (MD) simulations identified a critical rubber content of 40 % by mass, at which optimal binder compatibility and the strongest intermolecular interactions (van der Waals forces up to 5.4 kJ/mol) were observed. Further increases in rubber content led to a notable decline in these interactions. In conclusion, incorporating 40 % low-Mooney-viscosity (40 MU) rubber powder optimizes the performance of HC-RMA. The resulting material is a high-performance, cost-effective, and eco-friendly paving binder with strong potential for sustainable road construction.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100372"},"PeriodicalIF":9.0,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145926154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the filtration characteristics of asphalt mixtures containing different purification materials under multiple environmental impacts 不同净化材料沥青混合料在多种环境影响下的过滤特性研究

IF 9

Cleaner Materials

Pub Date : 2026-01-02 DOI: 10.1016/j.clema.2026.100370

Jiantao Wu, Chao Liang, Quan Liu, Yijie Liu

As the modern highway network continues to expand, the leaching contamination from asphalt pavements may pose environmental risks. Meanwhile, the complex environmental interactions are key factors influencing the leaching behavior of pollutants from pavement structures. To investigate the influence of purification materials on pollutant release behavior under the coupled effects of multiple environmental factors (such as temperature, UV and pH), and to assess their environmental hazards, this study prepared asphalt mixtures by substituting mineral powder with diatomite, zeolite, and activated carbon. Laboratory leaching tests were conducted using a self-developed multi-factor environmental simulation device. The specimens were subjected to temperature and UV coupled aging, followed by leaching in acidic solutions with different pH values. Based on the experimental results, the leaching characterization of various pollutants under different environmental condition combinations were explored, and the influence of diatomite, zeolite, and activated carbon on the leaching behavior of pollutants was evaluated. Furthermore, an evaluation system for pollutants was established by fuzzy mathematics to comprehensively assess the purification efficiency of purification materials. The results indicated that elevated temperatures generally promoted the leaching of most pollutants (except for arsenic). Diatomite exhibited the highest purification efficiency for nutrient pollutants, while activated carbon showed the best purification efficiency for heavy metal pollutants. The overall purification efficiency rankings for mineral powder, diatomite, zeolite, and activated carbon were 8.4345, 6.0815, 5.9644, and 5.6713, respectively, with lower scores indicating higher efficiency, confirming that activated carbon demonstrating the best overall purification performance.

随着现代公路网的不断扩大，沥青路面的浸出污染可能会带来环境风险。同时，复杂的环境相互作用是影响路面结构污染物淋滤行为的关键因素。为考察多种环境因素（如温度、UV、pH）耦合作用下净化材料对污染物释放行为的影响，并评价其环境危害，本研究采用硅藻土、沸石、活性炭代替矿物粉制备沥青混合料。室内浸出试验采用自行研制的多因素环境模拟装置进行。试样经受温度和紫外线耦合老化，然后在不同pH值的酸性溶液中浸出。在实验结果的基础上，探讨了不同环境条件组合下各种污染物的浸出特性，并评价了硅藻土、沸石和活性炭对污染物浸出行为的影响。在此基础上，运用模糊数学建立了污染物评价体系，对净化材料的净化效果进行综合评价。结果表明，温度升高总体上促进了大部分污染物（砷除外）的浸出。硅藻土对营养性污染物的净化效果最好，活性炭对重金属污染物的净化效果最好。矿粉、硅藻土、沸石、活性炭的综合净化效率排名分别为8.4345、6.0815、5.9644、5.6713，得分越低效率越高，说明活性炭的综合净化性能最好。

{"title":"Study on the filtration characteristics of asphalt mixtures containing different purification materials under multiple environmental impacts","authors":"Jiantao Wu, Chao Liang, Quan Liu, Yijie Liu","doi":"10.1016/j.clema.2026.100370","DOIUrl":"10.1016/j.clema.2026.100370","url":null,"abstract":"<div><div>As the modern highway network continues to expand, the leaching contamination from asphalt pavements may pose environmental risks. Meanwhile, the complex environmental interactions are key factors influencing the leaching behavior of pollutants from pavement structures. To investigate the influence of purification materials on pollutant release behavior under the coupled effects of multiple environmental factors (such as temperature, UV and pH), and to assess their environmental hazards, this study prepared asphalt mixtures by substituting mineral powder with diatomite, zeolite, and activated carbon. Laboratory leaching tests were conducted using a self-developed multi-factor environmental simulation device. The specimens were subjected to temperature and UV coupled aging, followed by leaching in acidic solutions with different pH values. Based on the experimental results, the leaching characterization of various pollutants under different environmental condition combinations were explored, and the influence of diatomite, zeolite, and activated carbon on the leaching behavior of pollutants was evaluated. Furthermore, an evaluation system for pollutants was established by fuzzy mathematics to comprehensively assess the purification efficiency of purification materials. The results indicated that elevated temperatures generally promoted the leaching of most pollutants (except for arsenic). Diatomite exhibited the highest purification efficiency for nutrient pollutants, while activated carbon showed the best purification efficiency for heavy metal pollutants. The overall purification efficiency rankings for mineral powder, diatomite, zeolite, and activated carbon were 8.4345, 6.0815, 5.9644, and 5.6713, respectively, with lower scores indicating higher efficiency, confirming that activated carbon demonstrating the best overall purification performance.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100370"},"PeriodicalIF":9.0,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Utilization of products from aqueous mineral carbonation of industrial residues as supplementary cementitious materials 工业废渣水矿物碳酸化产物作为补充胶凝材料的利用

IF 9

Cleaner Materials

Pub Date : 2026-01-02 DOI: 10.1016/j.clema.2026.100369

Antonio Gasós , Marco Mazzotti , Frank Winnefeld

The rising demand for low-carbon construction materials and the declining availability of traditional supplementary cementitious materials have driven interest in alternative substitutes. Alkaline industrial residues—such as incineration ashes, cement kiln dusts, and steel slags—are abundant but often unsuitable for direct use in cement due to unfavorable chemical and mineralogical compositions. This study investigates the CO₂ uptake and the potential of six such residues for partial cement replacement after treatment through aqueous mineral carbonation, using both direct carbonation in water and indirect carbonation in aqueous ammonium nitrate. Direct carbonation forms carbonates within the residues, while indirect carbonation produces two separate streams: a calcium-depleted leached residue and precipitated calcium carbonate. Mortars incorporating directly carbonated residues generally achieved higher compressive strength than those with fresh and leached residues, at 30 wt% cement replacement, likely due to calcite-induced nucleation and the pozzolanic reactivity of silica-rich gels. Although overall reactivity was limited—suggesting low to moderate clinker replacement potential—both aqueous carbonation routes removed or stabilized deleterious phases such as free lime, alkalis, and chlorides, expanding the potential use of these residues in construction, either as cement substitutes or fine fillers. Leaching tests revealed changes in hazardous element mobility, with implications for regulatory classification. Market analysis showed that while the cement sector could absorb suitable supplementary cementitious materials at moderate replacement levels, the limited demand for high-purity precipitated calcium carbonate constrains indirect carbonation to select feedstocks. This study provides a comparative framework for integrating mineral carbonation products into construction, which would enable CO₂ storage and resource circularity.

对低碳建筑材料的需求不断增长，而传统补充胶凝材料的可用性不断下降，促使人们对替代材料产生了兴趣。碱性工业残留物——如焚烧灰烬、水泥窑粉尘和钢渣——储量丰富，但由于其不利的化学和矿物成分，往往不适合直接用于水泥。本研究研究了六种此类残留物在水矿物碳化处理后的CO2吸收和部分替代水泥的潜力，包括在水中直接碳化和在硝酸铵水中间接碳化。直接碳化作用在残留物中形成碳酸盐，而间接碳化作用产生两种不同的流：缺钙的浸出残渣和沉淀的碳酸钙。在30%的水泥替代量下，含有直接碳化渣的砂浆通常比含有新鲜渣和浸出渣的砂浆具有更高的抗压强度，这可能是由于方解石诱导成核和富硅凝胶的火山灰反应性。尽管总体反应性有限，表明替代熟料的潜力低至中等，但两种水炭化方法都能去除或稳定有害相，如游离石灰、碱和氯化物，扩大了这些残留物在建筑中的潜在用途，无论是作为水泥替代品还是细填料。浸出试验揭示了危险元素流动性的变化，对监管分类有影响。市场分析表明，虽然水泥部门可以以适度的替代水平吸收适当的补充胶凝材料，但对高纯度沉淀碳酸钙的有限需求限制了间接碳酸化选择原料。该研究为将矿物碳酸化产品整合到建筑中提供了一个比较框架，从而实现二氧化碳的储存和资源循环。

{"title":"Utilization of products from aqueous mineral carbonation of industrial residues as supplementary cementitious materials","authors":"Antonio Gasós , Marco Mazzotti , Frank Winnefeld","doi":"10.1016/j.clema.2026.100369","DOIUrl":"10.1016/j.clema.2026.100369","url":null,"abstract":"<div><div>The rising demand for low-carbon construction materials and the declining availability of traditional supplementary cementitious materials have driven interest in alternative substitutes. Alkaline industrial residues—such as incineration ashes, cement kiln dusts, and steel slags—are abundant but often unsuitable for direct use in cement due to unfavorable chemical and mineralogical compositions. This study investigates the CO<sub>2</sub> uptake and the potential of six such residues for partial cement replacement after treatment through aqueous mineral carbonation, using both direct carbonation in water and indirect carbonation in aqueous ammonium nitrate. Direct carbonation forms carbonates within the residues, while indirect carbonation produces two separate streams: a calcium-depleted leached residue and precipitated calcium carbonate. Mortars incorporating directly carbonated residues generally achieved higher compressive strength than those with fresh and leached residues, at 30 wt% cement replacement, likely due to calcite-induced nucleation and the pozzolanic reactivity of silica-rich gels. Although overall reactivity was limited—suggesting low to moderate clinker replacement potential—both aqueous carbonation routes removed or stabilized deleterious phases such as free lime, alkalis, and chlorides, expanding the potential use of these residues in construction, either as cement substitutes or fine fillers. Leaching tests revealed changes in hazardous element mobility, with implications for regulatory classification. Market analysis showed that while the cement sector could absorb suitable supplementary cementitious materials at moderate replacement levels, the limited demand for high-purity precipitated calcium carbonate constrains indirect carbonation to select feedstocks. This study provides a comparative framework for integrating mineral carbonation products into construction, which would enable CO<sub>2</sub> storage and resource circularity.</div></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"19 ","pages":"Article 100369"},"PeriodicalIF":9.0,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0