Cleaner Environmental Systems最新文献_第7页

Life cycle assessment (and environmental footprint) to support food labelling schemes: an overview of current proposals and future directions 支持食品标签计划的生命周期评估（和环境足迹）：当前建议和未来方向概述

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-15 DOI: 10.1016/j.cesys.2025.100334

Laura García Herrero , Esther Sanyé Mengual , Cecilia Casonato , Giulia Listorti

Sustainability labelling gained prominence in food policy discourse in recent years, particularly in Europe, although its effectiveness in influencing consumer behaviour remains uncertain. This work explores selected sustainability food labels in the EU, reviewing sustainability indicators and the underlying life cycle assessment (LCA) methodologies. It addresses methodological approaches, and how they apply LCA with reference to the Product Environmental Footprint (PEF) method recommended by the European Commission. Four labels were identified from a comprehensive product database, focusing on labels applying LCA and quantifying multiple impacts, while an additional one was identified from the current EU panorama. An evaluation framework was developed on the relevant methodological aspects, encompassing governance, transparency, and clarity. Interviews with label developers complemented the analysis, along with a review of criticisms of LCA and PEF for labelling purposes. Four are scoring labels providing graded and colour-coded visuals, while one is still under development. Methodological adaptations to the PEF were common, and non-LCA sustainability assessments accounted for aspects such as farming management, social issues, and biodiversity. Labels varied in transparency, stakeholder involvement, and clarity. Criticisms of LCA include its reductionist approach, data gaps, and lack of robust methodologies for assessing biodiversity. While sustainability labelling is important to guide sustainable choices, labels need to be part of a broader policy mix and should be underpinned by clear goals and robust methodologies. This analysis will help to develop evidence-based policy instruments for sustainable consumption and set the basis for a harmonized labelling system.

近年来，可持续性标签在食品政策话语中获得了突出地位，特别是在欧洲，尽管其在影响消费者行为方面的有效性仍不确定。这项工作探讨了欧盟选定的可持续性食品标签，审查可持续性指标和潜在的生命周期评估（LCA）方法。它讨论了方法方法，以及它们如何根据欧洲委员会推荐的产品环境足迹（PEF）方法应用LCA。从综合产品数据库中确定了四个标签，重点关注应用LCA和量化多重影响的标签，同时从当前的欧盟全景中确定了另外一个标签。在相关的方法方面开发了一个评估框架，包括治理、透明度和清晰度。与标签开发商的访谈补充了分析，以及对LCA和PEF用于标签目的的批评的回顾。四个是评分标签，提供分级和颜色编码的视觉效果，而一个仍在开发中。对PEF的方法调整是常见的，非lca可持续性评估考虑了农业管理、社会问题和生物多样性等方面。标签在透明度、涉众参与度和清晰度方面各不相同。对LCA的批评包括其简化方法、数据缺口以及缺乏评估生物多样性的可靠方法。虽然可持续性标签对指导可持续选择很重要，但标签需要成为更广泛的政策组合的一部分，并应以明确的目标和有力的方法为基础。这项分析将有助于制定以证据为基础的可持续消费政策工具，并为统一的标签制度奠定基础。

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引用次数: 0

Exploring the potential for local energy ecosystems: A multi-criteria site identification and assessment process 探索当地能源生态系统的潜力：一个多标准的场地识别和评估过程

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-15 DOI: 10.1016/j.cesys.2025.100326

Vilppu Eloranta , Aki Grönman , Ville Sihvonen , Mika Luoranen

To meet stringent climate goals, regions in the EU need tools to facilitate the sustainable energy transition. Localized energy systems offer a promising solution. Although concepts such as energy communities have been promoted, there remains a gap in the literature and practice regarding systematic approaches to locate and evaluate sites for local energy ecosystems. We introduce a process that evaluates these ecosystem sites using four technical factors: energy consumption volume, wind and solar energy potential, and energy infrastructure availability. The process utilizes the multi-criteria decision analysis methods Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and analytic hierarchy process. We applied this approach in the region of Päijät-Häme, Finland, identifying seven potential sites, with Kujala and Nastola standing out as the alternatives having highest potential. Higher energy consumption density or solar energy availability did not always correlate with better synergy potential. Instead, the results showed that energy ecosystem potential is formed from a combination of factors, of which energy infrastructure is the most important one in the regional case. These outcomes align with prior research and indicate that the proposed factors can effectively capture energy ecosystem potential. The study provides an applicable approach for regional energy planning.

为了实现严格的气候目标，欧盟各地区需要工具来促进可持续能源转型。本地化能源系统提供了一个很有前途的解决方案。虽然诸如能源社区之类的概念得到了推广，但在文献和实践中，关于定位和评估当地能源生态系统地点的系统方法仍然存在差距。我们引入了一个过程，使用四个技术因素来评估这些生态系统站点：能源消耗量、风能和太阳能潜力以及能源基础设施的可用性。该过程采用了多准则决策分析方法——理想解相似偏好排序法（TOPSIS）和层次分析法。我们在芬兰Päijät-Häme地区应用了这种方法，确定了七个潜在的地点，其中Kujala和Nastola脱颖而出，成为最有潜力的备选地点。较高的能源消耗密度或太阳能可用性并不总是与较好的协同潜力相关。结果表明，能源生态系统潜力是多种因素共同作用的结果，其中能源基础设施是区域案例中最重要的因素。这些结果与先前的研究结果一致，表明所提出的因素可以有效地捕捉能源生态系统的潜力。该研究为区域能源规划提供了一种适用的方法。

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引用次数: 0

Institutional openness and green low-carbon transition ——empirical evidence from China 制度开放与绿色低碳转型——来自中国的经验证据

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-15 DOI: 10.1016/j.cesys.2025.100333

Yanping Liu , Yu Zhang

As the global pursuit of the “dual carbon” goals continues to accelerate, the realization of carbon emission reduction and green transformation through institutional innovation has emerged as a critical scholarly and policy concern. Based on city-level data from 283 Chinese cities between 2012 and 2023, this study systematically examines the impact of institutional openness on carbon emission reduction and urban green transition, and conducts empirical tests on the underlying mechanisms. The findings reveal that institutional openness can be regarded as a significant catalyst for carbon reduction. Disaggregated analyses indicate that the transformation of government functions exhibiting the most pronounced effect. Mechanistic investigations suggest that institutional openness can foster green low-carbon transformation through multiple pathways, including the promotion of emerging industries, the elevation of intelligent manufacturing, the stimulation of green patent innovation, and the enhancement of green total factor productivity. Moreover, the carbon mitigation effects are found to be more salient in eastern China, resource-based cities, and cities hosting data trading platforms. Further evidence suggests that institutional openness not only significantly curtails carbon emissions, but also exerts a positive influence on the source control of major industrial pollutants such as wastewater and particulate matter. This study provides both a theoretical underpinning and policy reference for the coordinated advancement of institutional openness and green transformation in China and internationally.

随着全球对“双碳”目标的追求不断加快，通过制度创新实现碳减排和绿色转型已成为一个重要的学术和政策问题。基于2012 - 2023年中国283个城市的数据，系统考察了制度开放对碳减排和城市绿色转型的影响，并对影响机制进行了实证检验。研究结果表明，制度开放可被视为碳减排的重要催化剂。分类分析表明，政府职能转变的效果最为显著。机制研究表明，制度开放可以通过促进新兴产业、提升智能制造、激发绿色专利创新和提高绿色全要素生产率等多种途径促进绿色低碳转型。此外，中国东部地区、资源型城市和数据交易平台城市的碳减排效果更为显著。进一步的证据表明，制度开放不仅显著减少了碳排放，而且对废水和颗粒物等主要工业污染物的源头控制产生了积极影响。本研究为国内外制度开放与绿色转型的协调推进提供了理论支撑和政策参考。

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引用次数: 0

Optimized pervious alkali-activated slag concrete for heavy metal adsorption and ecological risk reduction in LID applications 碱活化矿渣混凝土对重金属吸附及生态风险的优化研究

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-13 DOI: 10.1016/j.cesys.2025.100335

Zahra Ahmadi , Shahrokh Soltaninia , Kiachehr Behfarnia , Milad Nimafar , Sara Ahmadi

This study presents the development and optimization of a multifunctional pervious alkali-activated slag (PAAS) concrete incorporating phosphoric acid–activated almond shell carbon and natural zeolite for sustainable stormwater management. Designed to combine mechanical strength, permeability, and heavy metal removal, the material applies circular economy principles by integrating agricultural and industrial by-products. Experimental evaluations demonstrated a compressive strength of 22.6 MPa, permeability of 0.95 cm/s, and heavy metal removal efficiencies exceeding 85 % for copper (Cu), lead (Pb), chromium (Cr), and zinc (Zn). The Slime Mould Algorithm (SMA) was employed to optimize the mix design across multiple performance objectives. A Life Cycle Assessment (LCA) was conducted using ReCiPe 2016 Midpoint (H) within the ISO 14040/14044 framework, revealing a substantial reduction in global warming potential compared to conventional OPC-based mixes. The integrated system exhibited robust structural, hydraulic, and environmental performance, confirming its applicability for real-world stormwater applications. The proposed PAAS concrete offers a novel, waste-derived solution aligned with Low-Impact Development principles, promoting multifunctionality and sustainability in urban water infrastructure.

本研究提出了一种含有磷酸活化杏仁壳碳和天然沸石的多功能透水碱活化渣（PAAS）混凝土的开发和优化，用于可持续的雨水管理。该材料旨在结合机械强度、渗透性和重金属去除，通过整合农业和工业副产品，应用循环经济原则。实验评估表明，抗压强度为22.6 MPa，渗透率为0.95 cm/s，对铜（Cu）、铅（Pb）、铬（Cr）和锌（Zn）的重金属去除效率超过85%。采用黏菌算法（SMA）跨多个性能目标对混合料进行优化设计。在ISO 14040/14044框架下，使用ReCiPe 2016 Midpoint (H)进行了生命周期评估（LCA），发现与传统的基于opc的混合物相比，全球变暖潜能值大幅降低。该集成系统具有坚固的结构、水力和环保性能，证实了其在实际雨洪应用中的适用性。拟议的PAAS混凝土提供了一种新颖的、由废物产生的解决方案，符合低影响发展原则，促进了城市水利基础设施的多功能和可持续性。

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引用次数: 0

Holistic sustainability assessment of textile-reinforced concrete compared to structural concrete using the example of a roof construction 纺织钢筋混凝土与结构混凝土的整体可持续性评估，以屋顶建筑为例

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-12 DOI: 10.1016/j.cesys.2025.100331

Fabian Kufner, Julian Steinhauer, Petra Rucker-Gramm, Michael Horstmann

Concrete construction faces growing sustainability challenges due to increasing climate requirements and changing labor conditions. Textile-reinforced concrete offers substantial potential by enabling lighter and more resource-efficient components. However, assessing such systems requires holistic methods that go beyond material-based environmental indicators. Existing frameworks often neglect the interactions between manufacturing, structural design, and broader economic and social aspects. This study presents a holistic evaluation model that integrates 36 criteria across ecological, economic, and social dimensions within a transparent multi-criteria decision-making framework. A dominance matrix enables flexible weighting based on stakeholder-specific priorities. The model is applied to five roof component variants: cast-in-place and precast flat roofs with steel reinforcement, a precast shell with steel reinforcement, and two textile-reinforced concrete shells—one manually sprayed on-site, the other produced robotically manufactured using adaptive formwork. The results show that textile-reinforced concrete shells offer major ecological benefits, with up to 90 % material savings compared to conventional flat roofs and the lowest global warming potential among all variants. The precast textile-reinforced shell achieves the highest overall sustainability score due to automated precision production. The precast steel-reinforced shell ranks second under equal weighting of sustainability dimensions and requires 60 % less material than conventional flat slabs, emphasizing the sustainability potential of efficient structural geometry. While cast-in-place flat roofs remain economically advantageous, precast methods—both steel- and textile-reinforced—offer notabel social benefits by improving working conditions and minimizing site disruptions. The developed model demonstrates robustness and transferability, supporting early design decisions and detailed sustainability assessments for diverse components and construction strategies.

由于气候要求的增加和劳动条件的变化，混凝土建筑面临着越来越多的可持续性挑战。纺织增强混凝土通过实现更轻、更节约资源的组件，提供了巨大的潜力。然而，评估这些系统需要超越以材料为基础的环境指标的整体方法。现有的框架往往忽视了制造、结构设计和更广泛的经济和社会方面之间的相互作用。本研究提出了一个整体评估模型，该模型在透明的多标准决策框架内整合了生态、经济和社会维度的36个标准。优势矩阵使基于利益相关者特定优先级的灵活加权成为可能。该模型应用于五种屋顶组件变体：带钢筋的现浇和预制平屋顶，带钢筋的预制外壳，以及两个纺织钢筋混凝土外壳——一个在现场手工喷涂，另一个使用自适应模板机器人制造。结果表明，纺织钢筋混凝土外壳具有重要的生态效益，与传统的平屋顶相比，可节省高达90%的材料，并且在所有变体中具有最低的全球变暖潜力。由于自动化的精密生产，预制的纺织品增强外壳达到了最高的整体可持续性得分。预制钢增强壳在可持续性尺寸的同等重量下排名第二，比传统平板减少60%的材料需求，强调了高效结构几何的可持续性潜力。虽然就地浇筑的平屋顶在经济上仍然具有优势，但预制方法（包括钢加固和纺织品加固）通过改善工作条件和最大限度地减少现场干扰，提供了显著的社会效益。开发的模型具有稳健性和可移植性，支持早期设计决策和对不同组件和施工策略的详细可持续性评估。

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引用次数: 0

Energy use and carbon emissions in high-performance computing: A case study for universities and reduction strategies 高性能计算中的能源使用和碳排放：大学和减排策略的案例研究

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-11 DOI: 10.1016/j.cesys.2025.100332

Stefanie Hölbling , Gottfried Kirchengast , Christian Briese , Hans Thüminger

Energy use and greenhouse gas (GHG) emissions from high-performance computing (HPC) and high-volume data storage (HDS) strongly increased over recent years. This contrasts with the need for emission reductions to halt global warming in line with the Paris climate goals, calling for ambitious action also for these energy-intensive services. Here we focus on options for institutional users that aim at professional institutional climate action management, where the quantification of emissions from HPC and HDS as part of emission inventories is still rare. We present methods and results of a case study, drawing from HPC/HDS usage data of a collaborative consortium project of data centers and Universities in Austria, where institution-level quantifications of energy use and related GHG emissions were obtained.

We find emissions from HPC use strongly dominating, relative to HDS use, for individual institutions and in total; case-study operational emissions summed to about 300–500 tCO₂eq annually from HPC while HDS emissions were near 3 tCO₂eq; co-estimated embodied emissions sum up to 50 to 100 and 3 to 10 tCO₂eq, respectively. Building on the results, the collaboration of data centers and users enabled to derive also more general climate action options, including provider-user synergies. Provider improvements on energy savings, efficiency, shift to renewable sources and transparency to users on energy sources and consumption can meet with deliberate user choice of genuinely “green” data centers and user skill advances in “green coding”, “smart avoidance” of inefficient computations and considerate HDS management. Our findings underpin that providers and users jointly need to bring energy use and emissions under control to help meet the Paris climate goals.

近年来，高性能计算（HPC）和大容量数据存储（HDS）的能源使用和温室气体（GHG）排放大幅增加。这与巴黎气候目标要求的遏制全球变暖的减排需求形成了鲜明对比，要求对这些能源密集型服务也采取雄心勃勃的行动。在这里，我们重点关注针对专业机构气候行动管理的机构用户的选择，在这些机构中，将HPC和HDS的排放作为排放清单的一部分进行量化仍然很少。我们提出了一个案例研究的方法和结果，该案例来自奥地利数据中心和大学合作联盟项目的HPC/HDS使用数据，在该项目中获得了机构层面的能源使用和相关温室气体排放量化。我们发现，相对于HDS的使用，对于单个机构和总体而言，HPC使用的排放量占主导地位；案例研究中，HPC的年排放量约为300-500吨二氧化碳当量，而HDS的年排放量接近3吨二氧化碳当量；共同估计的实际排放量分别为50至100吨和3至10吨二氧化碳当量。在结果的基础上，数据中心和用户之间的协作还能够得出更一般的气候行动方案，包括提供者-用户协同效应。供应商在节约能源、提高效率、转向可再生能源以及向用户提供能源和消耗方面的透明度方面的改进，可以满足用户对真正“绿色”数据中心的深思熟虑的选择，以及用户在“绿色编码”、“智能避免”低效计算和周到的HDS管理方面的技能进步。我们的研究结果表明，供应商和用户需要共同控制能源使用和排放，以帮助实现《巴黎协定》的气候目标。

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引用次数: 0

Economic and life cycle assessment of novel hybrid energy and fuel generation systems from municipal waste through plasma gasification and anaerobic digestion coupled with carbon capture and storage 通过等离子气化和厌氧消化结合碳捕获和储存的新型城市垃圾混合能源和燃料发电系统的经济和生命周期评估

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-09 DOI: 10.1016/j.cesys.2025.100324

Qurrotin Ayunina Maulida Okta Arifianti , Maria Fernanda Rojas Michaga , Karim Rabea , Stavros Michailos , Kevin J. Hughes , Lin Ma , Derek Ingham , Mohamed Pourkashanian

Achieving climate goals demands novel system designs that enable the conversion of municipal waste, such as plastic and food waste into energy and fuels with minimal environmental impact. This study proposes an innovative multi-energy generation system that integrates plasma gasification for plastic waste and anaerobic digestion for food waste, coupled with carbon capture and storage (CCS) technologies. This novel conceptual design aims to maximize energy recovery while reducing lifecycle emissions compared to conventional waste-to-energy (WtE) pathways. Two novel system configurations were assessed: (1) a combined cooling, heating, and power (CCHP) system, and (2) a CCHP system integrated with liquid biomethane production. Each configuration was evaluated under three CCS strategies: no CCS, pre-combustion CCS, and post-combustion CCS. The economic analysis and life cycle assessment (LCA) highlight the economic and environmental trade-offs of each design. Specifically, in Scenario 1, the levelized cost of electricity (LCOE) increases from 0.171 USD/kWh (no CCS) to 0.311 and 0.354 USD/kWh while in Scenario 2, the levelized cost of biomethane (LCObM) rises from 0.176 USD/kWh to 0.314 and 0.374 USD/kWh for pre- and post-combustion CCS, respectively. While CCS raises production costs, they also represent a tangible commitment to reducing emissions and underscore that transitioning to cleaner energy systems often entails higher near-term expenditures. Across both scenarios, the levelized cost of waste treatment (LCOWT) spans 0.081–0.236 USD/kg of waste. Global warming potential (GWP) ranges from −0.191 to 0.662 kgCO₂-eq/kg of feedstock for Scenario 1, and 0.123 to 0.746 kgCO₂-eq/kg for Scenario 2. This work provides the first integrated assessment of such a hybrid WtE system, offering new insights for sustainable waste valorisation. The proposed novel designs support future detailed engineering studies and inform policymaking for low-carbon waste management.

实现气候目标需要新颖的系统设计，能够将城市垃圾（如塑料和食物垃圾）转化为能源和燃料，同时对环境的影响最小。本研究提出了一种创新的多能发电系统，该系统集成了塑料垃圾的等离子气化和食物垃圾的厌氧消化，以及碳捕获和储存（CCS）技术。与传统的废物转化为能源（WtE）途径相比，这种新颖的概念设计旨在最大限度地提高能源回收，同时减少生命周期排放。评估了两种新型系统配置：(1)冷热电联产（CCHP）系统，以及(2)与液态生物甲烷生产集成的CCHP系统。每种配置都在三种CCS策略下进行了评估：不进行CCS、燃烧前CCS和燃烧后CCS。经济分析和生命周期评估（LCA）强调了每个设计的经济和环境权衡。具体而言，在场景1中，电力平准化成本（LCOE）从0.171美元/千瓦时（未进行CCS）增加到0.311美元/千瓦时和0.354美元/千瓦时，而在场景2中，生物甲烷平准化成本（LCObM）分别从0.176美元/千瓦时和燃烧后CCS增加到0.314美元/千瓦时和0.374美元/千瓦时。虽然CCS提高了生产成本，但它们也代表了减少排放的切实承诺，并强调向更清洁的能源系统过渡往往需要更高的近期支出。在这两种情况下，废物处理的平准化成本（LCOWT）为0.081-0.236美元/公斤废物。情景1的全球变暖潜势（GWP）范围为- 0.191至0.662千克二氧化碳当量/千克，情景2的GWP范围为0.123至0.746千克二氧化碳当量/千克。这项工作提供了这种混合WtE系统的第一个综合评估，为可持续废物增值提供了新的见解。提出的新设计支持未来详细的工程研究，并为低碳废物管理的政策制定提供信息。

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引用次数: 0

Circularity in the pasta supply chain: Developing a multi-indicator framework for circular economy assessment 面食供应链的循环性：开发循环经济评估的多指标框架

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-03 DOI: 10.1016/j.cesys.2025.100327

Benedetta Esposito , Bruno Notarnicola , Pietro Alexander Renzulli , Rosa Di Capua

The shift towards circular production patterns in the agri-food supply chain is becoming increasingly essential for sustainable development. In this scenario, measuring circularity is critical for ensuring an effective and efficient transition towards such development. Given its relevance, the scientific community and standard-setting bodies are progressively focusing on identifying appropriate circularity indicators. Accordingly, most existing studies have provided broad overviews of available indicators, systematically reviewing academic and grey literature in the context of the agri-food supply chain. Considering the peculiarities of each supply chain within this sector, it is crucial to identify specific indicators in line with their characteristics, providing a practical guide for companies committed to the circular transition. However, a significant gap in research focused on identifying specific indicators for different agri-food supply chain has emerged. To fill this gap, the present research aims to provide a comprehensive framework to measure circularity within the pasta supply chain, representing an essential sector of the worldwide economy. To achieve this, a structured approach was adopted that integrates a systematic literature review with an assessment of the available standards on circular economy measurement. By implementing a rigorous selection process, a final set of 51 indicators – reclassified according to the analytical framework developed in the study – was identified for each pasta supply chain phase. Results show that most indicators could be transversally applied to the PSC. This multi-indicator framework could represent a helpful tool for the pasta industry to measure, monitor and disclose circularity performance in line with the ISO 59020:2024 standard.

农业食品供应链向循环生产模式的转变对可持续发展越来越重要。在这种情况下，测量循环度对于确保向这种开发的有效和高效过渡至关重要。鉴于其相关性，科学界和标准制定机构正逐步侧重于确定适当的循环指标。因此，大多数现有研究提供了可用指标的广泛概述，系统地审查了农业食品供应链背景下的学术和灰色文献。考虑到该行业内每个供应链的特点，确定符合其特点的具体指标至关重要，为致力于循环转型的公司提供实用指南。然而，在确定不同农业食品供应链的具体指标方面的研究存在重大差距。为了填补这一空白，本研究旨在提供一个全面的框架来衡量意大利面供应链中的循环，代表全球经济的一个重要部门。为了实现这一目标，采用了一种结构化的方法，将系统的文献综述与对循环经济测量的现有标准的评估相结合。通过实施严格的选择过程，最终确定了51个指标，并根据研究中开发的分析框架重新分类，用于面食供应链的每个阶段。结果表明，大多数指标可以横向应用于PSC。这个多指标框架可以为面食行业提供一个有用的工具，根据ISO 59020:2024标准来测量、监控和披露循环性能。

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引用次数: 0

Simulation and techno-economic evaluation of integrated palm oil mill processes for advancing a circular economy 推进循环经济的棕榈油综合加工工艺模拟与技术经济评价

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-03 DOI: 10.1016/j.cesys.2025.100323

Siti Naderah Sulin , Mohd Noriznan Mokhtar , Azhari Samsu Baharuddin , Mohd Afandi P. Mohammed

The palm oil industry faces increasing pressure to adopt sustainable and circular production practices, particularly in waste management and greenhouse gas (GHG) emissions reduction. Integrated biomass utilization within palm oil mills (POMs) offers a promising approach to improve both environmental and economic outcomes. This study evaluates the techno-economic and environmental performance of an integrated POM system incorporating palm oil mill effluent (POME) treatment, empty fruit bunch (EFB) composting, and residual oil recovery within a unified flowsheet. A detailed simulation model of a 60 MT/h mill was developed using SuperPro Designer® software, based on actual mill operations and literature data. The model assessed mass and energy balances, capital and operating costs, and carbon dioxide (CO₂) equivalent emissions. Results showed a 5 % increase in revenue through by-product valorization and a 53 % reduction in CO₂ equivalent emissions when combining EFB composting with biogas capture. The system achieved a positive net present value (NPV) of MYR 75.63 million, an internal rate of return (IRR) of 30.08 %, a return on investment (ROI) of 19.20 %, and a payback period (PBP) of 5.21 years. Sensitivity analysis showed that the prices of fresh fruit bunches (FFB), crude palm oil (CPO), and the CPO yield are key factors influencing economic performance. These outcomes highlight the feasibility of implementing circular economy principles, where waste streams are transformed into valuable products such as compost, biogas, and recovered oil, thereby closing material loops and reducing environmental impact.

棕榈油行业面临越来越大的压力，需要采用可持续和循环生产实践，特别是在废物管理和温室气体（GHG）减排方面。棕榈油厂（POMs）的综合生物质利用为改善环境和经济结果提供了一种有希望的方法。本研究评估了综合POM系统的技术经济和环境性能，该系统包括棕榈油厂废水（POME）处理、空果束（EFB）堆肥和在统一流程内的剩余油回收。基于实际磨机操作和文献数据，使用SuperPro Designer®软件开发了60 MT/h磨机的详细仿真模型。该模型评估了质量和能量平衡、资本和运营成本以及二氧化碳当量排放。结果表明，当将EFB堆肥与沼气捕获相结合时，通过副产品增值，收入增加了5%，二氧化碳当量排放量减少了53%。该系统的净现值（NPV）为7563万令吉，内部收益率（IRR）为30.08%，投资回报率（ROI）为19.20%，投资回收期（PBP）为5.21年。敏感性分析表明，鲜果串（FFB）价格、粗棕榈油（CPO）价格和粗棕榈油产量是影响经济效益的关键因素。这些成果突出了实施循环经济原则的可行性，在循环经济原则中，废物流被转化为有价值的产品，如堆肥、沼气和回收油，从而闭合物质循环，减少对环境的影响。

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引用次数: 0

Multidimensional assessment of fisheries sustainability in India's largest estuarine system 印度最大河口系统渔业可持续性的多维评估

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Environmental Systems

Pub Date : 2025-09-03 DOI: 10.1016/j.cesys.2025.100325

Abhilash Thapa , Neha W. Qureshi , P.S. Ananthan , Dibakar Bhakta , Piyashi Debroy

The Hooghly-Matlah Estuarine System (HMES) supports rich fisheries and millions of livelihoods, but overfishing and habitat loss are driving stock declines. Ensuring sustainable fisheries is essential to protect the ecosystem and dependent communities. This study explores how sustainable HMES fisheries truly are, using a modified Rapid Appraisal for Fisheries (RAPFISH) approach. We based our assessment on the hypothesis that current fishing practices may be less sustainable, largely due to challenges across five dimensions—ecology, economy, social, technology, and governance. Multi-dimensional scaling was used to score 45 attributes, followed by leverage analysis to identify key drivers. Data were collected from 38 fishing sites across four zones (8029 km²), including 238 fisher interviews, focus group discussions (4), key informants, and secondary sources. Species- and zone-specific RAPFISH results showed sea catfish fisheries as the most sustainable (57.01 %) and tiger prawn seed fisheries as the least (34.34 %). None of the 22 fisheries were in ‘good’ (75.1–100 %) or ‘poor’ (0–25 %) categories, suggesting room for improvement. Marine zone II (MZII) was “quite sustainable” (53.83 %), while marine zone I (MZI), true estuary (TE), and freshwater (FW) zones were “less sustainable” (25.1–50 %), largely due to lower scores in social, governance, technology, and ecology. Overall RAPFISH scores for HMES were 47.06 % (species-based) and 46.7 % (zone-based), indicating a “less sustainable” status. Although economic and governance dimensions showed moderate strength, zone-specific actions—such as conflict resolution (TE, MZI); enhancing vessel registration and fishing bans (FW, TE); and consolidating governance in MZII, etc., can build resilience and support sustainable estuarine fisheries.

胡格利-马特拉河口系统（HMES）支撑着丰富的渔业资源和数百万人的生计，但过度捕捞和栖息地丧失正在导致种群数量下降。确保可持续渔业对保护生态系统和依赖渔业的社区至关重要。本研究利用一种改进的渔业快速评估（RAPFISH）方法，探讨了HMES渔业的真正可持续性。我们的评估基于这样一个假设，即当前的捕捞方式可能不太可持续，这主要是由于生态、经济、社会、技术和治理这五个维度的挑战。使用多维尺度对45个属性进行评分，然后进行杠杆分析以确定关键驱动因素。数据来自4个区域（8029平方公里）的38个渔场，包括238名渔民访谈、焦点小组讨论(4)、关键线人和二手来源。RAPFISH结果显示，海鲶渔业的可持续性最高（57.01%），虎对虾种子渔业的可持续性最低（34.34%）。22个渔场中没有一个处于“良好”（75.1 - 100%）或“差”（0 - 25%）类别，这表明还有改进的空间。海洋II区（MZII）“相当可持续”（53.83%），而海洋I区（MZI）、真河口（TE）和淡水（FW）区“较不可持续”（25.1 - 50%），主要是由于社会、治理、技术和生态得分较低。HMES的总体RAPFISH得分为47.06%（基于物种）和46.7%（基于区域），表明“不太可持续”的状态。虽然经济和治理维度表现出中等强度，但区域特定行动，如冲突解决（TE， MZI）；加强船只登记及禁渔令（FW， TE）；加强MZII的治理等，可以建立复原力并支持可持续的河口渔业。

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