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Energy- and cost-efficient CO2 capture from dilute emissions by pyridinic-graphene membranes 吡啶-石墨烯膜从稀释排放物中捕获能源和成本效益高的二氧化碳
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-25 DOI: 10.1038/s41893-025-01696-5
Marina Micari, Kuang-Jung Hsu, Stefania Bempeli, Kumar Varoon Agrawal
Membrane-based carbon capture offers an energy-efficient and environmentally friendly alternative to conventional absorption-based processes, yet adoption remains limited by its performance with dilute CO2 sources such as natural gas power plants. Here we present a techno-economic assessment of pyridinic-graphene membranes—porous graphene membranes hosting pyridinic nitrogen—that yield increasingly high CO2 permeance and selectivity as CO2 concentration in the feed decreases. This unique behaviour substantially reduces energy consumption, process footprint and capture costs, even when considering the non-ideal effects such as concentration polarization and pressure drops. Using uncertainty-aware cost modelling, including membrane cost, electricity prices, contingency factors and learning curves, we show that capture costs can reach US$50–100 per ton CO2 for natural gas power plants and as low as US$25–50 per ton CO2 for coal and cement plants, positioning this technology favourably against state-of-the-art capture processes. Our work bridges material innovation with process optimization, highlighting the role of advanced membrane materials and process design in cost-effective carbon capture for diverse industrial sectors. Due to the very low CO2 content in dilute flue gas emissions, membrane-based carbon capture is typically deemed infeasible. This uncertainty-aware techno-economic analysis suggests that pyridinic-graphene membranes, which perform better as CO2 concentration decreases, offer a viable solution.
膜碳捕获技术为传统的吸收技术提供了一种节能环保的替代方案,但由于其在天然气发电厂等稀释二氧化碳源中的性能,其采用仍然受到限制。在这里,我们提出了吡啶-石墨烯膜的技术经济评估——多孔石墨烯膜承载吡啶氮——随着进料中二氧化碳浓度的降低,二氧化碳的渗透率和选择性越来越高。即使考虑到浓度极化和压降等非理想影响,这种独特的行为也大大降低了能耗、过程足迹和捕获成本。利用不确定性成本模型,包括膜成本、电价、应急因素和学习曲线,我们表明,天然气发电厂的捕集成本可以达到每吨二氧化碳50-100美元,煤炭和水泥厂的捕集成本低至每吨二氧化碳25-50美元,使这项技术优于最先进的捕集工艺。我们的工作将材料创新与工艺优化相结合,突出了先进膜材料和工艺设计在不同工业部门的成本效益碳捕获中的作用。由于稀烟气排放中的二氧化碳含量非常低,膜碳捕获通常被认为是不可行的。这种具有不确定性的技术经济分析表明,吡啶-石墨烯膜在二氧化碳浓度降低时性能更好,是一种可行的解决方案。
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引用次数: 0
Extraction, purification, and reuse of dyes from coloured polyester textiles 从彩色聚酯纺织品中提取、纯化和再利用染料
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-24 DOI: 10.1038/s41893-025-01686-7
Minjung Lee, Yuanzhe Liang, Amy A. Cuthbertson, Samah Y. Mohamed, Allen Puente-Urbina, William E. Michener, Joel Miscall, Clarissa Lincoln, Ciaran W. Lahive, Jason S. DesVeaux, Eli J. Fastow, Karen I. Winey, Hoon Choi, Brandon C. Knott, Natalie Banakis, Robert D. Allen, Gregg T. Beckham, Katrina M. Knauer
The removal of dyes from coloured textile waste represents a sustainable approach to textile recycling, enabling the recovery of valuable chemical, and material resources that would otherwise be discarded. Up to 40% of the greenhouse gas emissions from textiles originate from dye production, making efficient recycling of dyes a major opportunity for curbing emissions and minimizing waste in both textile manufacturing and recycling. Here we demonstrate a process for the extraction, purification, and reuse of mixed dyes from polyester textiles using bio-based, non-hazardous solvents selected on the basis of computational predictions for polyester and dye solubilities. Extracted dyes are purified to individual compounds using counter-current chromatography and analysed via liquid chromatography–mass spectrometry. Post-extraction characterization of the extracted dyes and polymer substrate confirms dye colour retention and polyester fabric property preservation. Dye recycling is demonstrated by redyeing colour-free fabrics with the recovered dyes. We further show a potential process configuration for dye removal using a flow-through reactor packed with a textile substrate. The proposed dye removal process produces reusable, recyclable dyes, and dye-free fabrics, thus facilitating textile recycling. The textile industry’s reliance on synthetic dyes is an important source of greenhouse gas emissions. Here the authors describe a process involving sustainable solvents that allows the extraction, purification, and reuse of dyes, as well as the recycling of dye-free fabrics.
从有色纺织品废料中去除染料代表了一种可持续的纺织品回收方法,使有价值的化学品和材料资源得以回收,否则将被丢弃。纺织品中高达40%的温室气体排放来自染料生产,因此染料的有效回收是在纺织品制造和回收过程中减少排放和减少浪费的一个重要机会。在这里,我们展示了从聚酯纺织品中提取、纯化和再利用混合染料的过程,使用基于聚酯和染料溶解度的计算预测选择的生物基无害溶剂。提取的染料使用逆流色谱法纯化成单独的化合物,并通过液相色谱-质谱法进行分析。提取后的染料和聚合物基材的提取后表征证实了染料的颜色保留和聚酯织物的性能保存。用回收的染料重新染色无色织物,证明了染料的回收利用。我们进一步展示了一个潜在的工艺配置,染料去除使用流动反应器与纺织品衬底填料。建议的染料去除工艺生产可重复使用、可回收的染料和无染料织物,从而促进纺织品回收。纺织工业对合成染料的依赖是温室气体排放的一个重要来源。在这里,作者描述了一个涉及可持续溶剂的过程,可以提取、净化和再利用染料,以及回收无染料织物。
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引用次数: 0
One Health and Indigenous Peoples at a crossroads “同一个健康”和处于十字路口的土著人民
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-21 DOI: 10.1038/s41893-025-01698-3
Nicole Redvers, Danya Carroll, Kelly Menzel, Sean Hillier
Understanding the intersections between Indigenous Peoples and the One Health approach demands a fundamental reorientation of how translational work is conceptualized, enacted and evaluated. Partnership between systems may be possible with a clear recognition by the One Health community of Indigenous rights and Indigenous knowledge systems.
要了解土著人民与“同一个健康”方针之间的交集,就需要从根本上重新定位如何概念化、制定和评估翻译工作。如果“同一个健康”社区明确承认土著权利和土著知识体系,各系统之间就有可能建立伙伴关系。
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引用次数: 0
Human exposure risk via algae-induced transfer of tritiated water in the marine food chain 通过藻类诱导的海洋食物链中氚化水的转移,人类暴露的风险
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-21 DOI: 10.1038/s41893-025-01669-8
Shipeng Dong, Kun Lu, Yu Miao, Fengmei Cui, Yanxu Zhang, Pengfei Xue, Liangliang Zhang, Juan Diwu, Zhifang Chai, Shuao Wang, Liang Mao
Understanding the health impact of human radiation exposure from tritiated water release is crucial for the management and sustainability of nuclear energy. However, it remains not fully explored owing to the neglect of bioconversion products (organically bound tritium, OBT) along the food chain. Here by evaluating the uptake and chemical transfer of tritium in biota, we show the critical role of algae in rapidly incorporating and transferring tritiated water into OBT, which serves as nutrients for trophic transfer to fish. Notably, the specific retention of OBT in the fish brain, by integrating into biomolecules, potentially disrupts key metabolic reactions. The derived concentration factors and biomagnification factors are instrumental in estimating the internal exposure dose to human individuals, thereby enabling more accurate risk assessments for both planned tritium releases and accidental leakages. This work highlights the importance of comprehensive evaluation and mitigation of tritium exposure risks. This work assesses the enrichment and organification of tritium by algae and the transfer along the marine food chain, suggesting human health risks and highlighting the importance of radioactive isotope management.
了解氚化水释放对人体辐射的健康影响对核能的管理和可持续性至关重要。然而,由于忽视了沿食物链的生物转化产物(有机结合的氚,OBT),它仍然没有得到充分的探索。通过评估生物群对氚的吸收和化学转移,我们展示了藻类在快速吸收和转移氚化水到OBT中的关键作用,而OBT是鱼类营养转移的营养物质。值得注意的是,OBT在鱼类大脑中的特异性保留,通过整合到生物分子中,可能会破坏关键的代谢反应。所得的浓度因子和生物放大因子有助于估计人体内部照射剂量,从而能够对计划氚释放和意外泄漏进行更准确的风险评估。这项工作突出了全面评估和减轻氚暴露风险的重要性。这项工作评估了藻类对氚的富集和组织以及沿海洋食物链的转移,提出了人类健康风险,并强调了放射性同位素管理的重要性。
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引用次数: 0
Assessing the risk of tritiated water tritium 评估氚化水的风险
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-21 DOI: 10.1038/s41893-025-01694-7
Brian A. Powell
Cleanup activities at the Fukushima Daiichi site will include the release of tritium to ocean waters. Although the dose is small compared with natural background radiation, a study now shows that uptake of the tritium by algae and subsequent trophic transfer could potentially result in an increased dose to humans.
福岛第一核电站的清理工作将包括向海水释放氚。虽然与自然背景辐射相比,剂量很小,但现在的一项研究表明,藻类对氚的吸收以及随后的营养转移可能会导致人体受到的剂量增加。
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引用次数: 0
A delivery agenda on climate change 关于气候变化的交付议程
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-19 DOI: 10.1038/s41893-025-01719-1
Ten years after the adoption of the Paris Agreement, the climate crisis is escalating. It is time for world leaders to confront the reality of a warming planet with pragmatism and actions.
《巴黎协定》通过十年后,气候危机正在升级。现在是世界领导人以务实和行动面对地球变暖现实的时候了。
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引用次数: 0
Armed conflicts and biodiversity research 武装冲突与生物多样性研究
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-17 DOI: 10.1038/s41893-025-01699-2
Pedro Romero-Vidal, Luis Flores, Prince Kaleme, Radar Nishuli, José L. Tella
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引用次数: 0
Best practices for catalytic water treatment 催化水处理的最佳实践
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-17 DOI: 10.1038/s41893-025-01687-6
Claire Chouinard, Paul Westerhoff, Jae-Hong Kim
Although catalytic processes offer a low-cost, low-energy alternative to traditional water treatment methods, they still face a lack of industrial adoption. Here we recommend standardized rigorous practices on the catalyst testing to bridge the gap between laboratory research and practical application.
虽然催化过程提供了一种低成本、低能耗的替代传统水处理方法,但它们仍然缺乏工业应用。在这里,我们推荐标准化的严格实践的催化剂测试,以弥合实验室研究和实际应用之间的差距。
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引用次数: 0
Global decent living standards could be achieved by moderate build-up of material stocks 全球体面的生活水平可以通过适度积累物质储备来实现
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-17 DOI: 10.1038/s41893-025-01671-0
Global inequalities leave billions without the services necessary for a decent living standard. Our analysis suggests that even moderate additions to societies’ material stocks in buildings, infrastructure and machinery could secure universal decent living standards, by 2030 at current construction rates.
全球不平等导致数十亿人无法获得体面生活所需的服务。我们的分析表明,以目前的建设速度,到2030年,即使社会在建筑、基础设施和机械方面的材料库存适度增加,也可以确保普遍的体面生活水平。
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引用次数: 0
Modelling PM2.5 reduction scenarios for future cardiopulmonary disease reduction 模拟未来减少心肺疾病的PM2.5减少情景
IF 27.1 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-14 DOI: 10.1038/s41893-025-01676-9
Eartha Weber, Vassilis Daioglou, Laszlo Vreedenburgh, Jonathan Doelman, George Downward, Maria Gabriela Matias de Pinho, Detlef van Vuuren
Long-term PM2.5 exposure is a risk factor for cardiovascular and respiratory mortality. Here a global health impact assessment was conducted utilizing seven future scenarios evaluating strategies to reduce PM2.5 exposure. Strategies included reducing fossil fuel use, air pollution control, adopting cleaner cooking methods and combinations thereof. Under current trends, air quality is projected to improve by 2050; nevertheless, the absolute attributable burden of ischaemic heart disease, stroke and chronic obstructive pulmonary disease remains high in many regions. Cleaner cooking fuel use is effective in the short term (by 2030) in South and Central America, Asia, and Africa for reducing PM2.5-related deaths. In the long term (by 2050) for most regions, only strategies that simultaneously target ambient and cooking-related PM2.5 resulted in sustained improvements that expand beyond current trends for reducing disease burden across these three health outcomes. In the Asian region, for example, under current trends, the population-attributable fraction decreases from 35% in 2015 to 18% in 2050. In the scenario combining universal clean cooking and climate policy, it drops further to 15%, and when all strategies are combined, it reaches as low as 11% by 2050. With all strategies combined, the average global population-weighted PM2.5 exposure from both ambient and cooking sources is reduced by nearly two-thirds (66 µg m−3 compared with 26 µg m−3). For North Africa and the Middle East region, the population-attributable fraction remains high across all scenarios. Additional strategies beyond those mentioned here are required to further improve air quality. It is recommended to pursue climate mitigation alongside universal access to cleaner household fuels to maximize cardiopulmonary health benefits. Exposure to air pollution poses a substantial risk to health, contributing to high rates of cardiovascular and respiratory mortality. A study now evaluates the health impacts of different PM2.5 reduction strategies, providing evidence of their effectiveness across different regions and timeframes.
长期接触PM2.5是心血管和呼吸系统死亡的危险因素。本研究利用7种未来情景评估策略进行了全球健康影响评估,以减少PM2.5暴露。战略包括减少化石燃料的使用、控制空气污染、采用更清洁的烹饪方法及其组合。按照目前的趋势,预计到2050年空气质量将有所改善;然而,在许多地区,缺血性心脏病、中风和慢性阻塞性肺病的绝对可归因负担仍然很高。在南美洲和中美洲、亚洲和非洲,使用更清洁的烹饪燃料在短期内(到2030年)可有效减少与pm2.5有关的死亡。从长期来看(到2050年),对于大多数地区来说,只有同时针对环境和烹饪相关PM2.5的战略才能带来持续的改善,从而超越目前在这三种健康结果中减少疾病负担的趋势。例如,在亚洲区域,按照目前的趋势,人口归因比例将从2015年的35%下降到2050年的18%。在普遍清洁烹饪和气候政策相结合的情况下,这一比例进一步降至15%,而当所有战略结合起来时,到2050年这一比例将降至11%。综合所有策略,来自环境和烹饪来源的全球平均人口加权PM2.5暴露量减少了近三分之二(66 μ g m - 3与26 μ g m - 3相比)。对于北非和中东地区,在所有情景中,人口归因比例仍然很高。要进一步改善空气质量,除了上述提到的策略外,还需要采取其他策略。建议在普遍获得更清洁的家用燃料的同时寻求减缓气候变化,以最大限度地提高心肺健康效益。接触空气污染对健康构成重大风险,导致心血管和呼吸系统死亡率高。目前,一项研究评估了不同的PM2.5减少策略对健康的影响,为它们在不同地区和时间框架内的有效性提供了证据。
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Nature Sustainability
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