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Rating sustainability aspects of reverse osmosis desalination plants using multi-criteria decision-making approach 用多标准决策方法评价反渗透海水淡化厂的可持续性
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-11-25 DOI: 10.1016/j.cesys.2025.100380
Aya M. El-Shahat , Emad S. Bakhoum , Mohamed Marzouk
Desalination has become a vital global water source with significant economic, environmental, and social impacts. Governance institutions are increasingly applying sustainability principles to desalination. Given the scarcity of high-quality freshwater and growing populations, desalination ensures water security in Egypt. Despite environmental impacts and high energy consumption, desalination projects are not fully integrated into green rating frameworks. However, despite their importance, limited research efforts have been made to score and rank desalination plants using Multi-Criteria Decision-Making (MCDM) techniques. This research addresses this gap by proposing a sustainable assessment framework integrating sustainability, MCDM techniques and sensitivity analysis. Benchmarking regional and international rating systems to highlight sustainable categories and criteria. The developed system includes 26 criteria in seven categories: 1) General Requirements, 2) Sustainable Site, 3) Energy, 4) Water Efficiency, 5) Materials and Resources, 6) Emissions and Environment, and 7) Culture and Economy. The rating system classifies desalination plants into six levels: Unsustainable, Certified, Bronze, Silver, Gold, and Platinum. A key novelty of the study is the dual application of two developed MCDM techniques, Best-Worst Method (BWM) and Full-Consistency Method (FUCOM), which are rarely used in infrastructure assessments, particularly in the desalination sector. They are used to determine categories and criteria weights. To measure the consistency between BWM and FUCOM results, a Weight Similarity Coefficient (WSC) was calculated. The overall WSC value was 0.83, indicating high consistency between the two methods. The most important and the least important categories and criteria were determined by conducting questionnaire surveys completed by desalination plants experts. The framework is applied to East Port-Said Reverse Osmosis (RO) Water Desalination Plant as a case study. The Plant received a high sustainability ranking (“Silver”) with a score of 73.24 and 72.58 using BWM and FUCOM, respectively. Sensitivity analysis assesses the effectiveness of categories and criteria using deterministic and Monte Carlo regression-based analysis. Results reveal that BWM and FUCOM rankings are sensitive to category weight variations, emphasizing the importance of precise weighting in sustainability assessments.
海水淡化已经成为全球重要的水源,具有重大的经济、环境和社会影响。管理机构越来越多地将可持续性原则应用于海水淡化。鉴于高质量淡水的稀缺和不断增长的人口,海水淡化确保了埃及的水安全。尽管有环境影响和高能耗,但海水淡化项目并未完全纳入绿色评级框架。然而,尽管它们很重要,但利用多标准决策(MCDM)技术对海水淡化厂进行评分和排名的研究努力有限。本研究通过提出一个整合可持续性、MCDM技术和敏感性分析的可持续评估框架来解决这一差距。制定区域和国际评级体系的基准,以突出可持续的类别和标准。开发的系统包括七个类别的26项标准:1)一般要求,2)可持续场地,3)能源,4)水效率,5)材料和资源,6)排放与环境,7)文化与经济。该评级系统将海水淡化厂分为六个级别:不可持续、认证、青铜、白银、黄金和铂金。该研究的一个关键新颖之处在于两种已开发的MCDM技术的双重应用,即最佳-最差方法(BWM)和完全一致性方法(FUCOM),这两种方法很少用于基础设施评估,特别是在海水淡化部门。它们用于确定类别和标准权重。为了衡量BWM和FUCOM结果的一致性,计算了权重相似系数(WSC)。总体WSC值为0.83,表明两种方法的一致性较高。最重要和最不重要的类别和标准是由海水淡化厂专家完成的问卷调查确定的。并以东港反渗透海水淡化厂为例进行了研究。该工厂获得了很高的可持续性排名(“银牌”),使用BWM和FUCOM分别获得73.24和72.58分。敏感性分析使用确定性和蒙特卡罗回归分析评估类别和标准的有效性。结果表明,BWM和FUCOM排名对类别权重变化敏感,强调了精确权重在可持续性评估中的重要性。
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引用次数: 0
Evaluation of Environmental Hotspots and improvements for sustainable mussel production: An LCA approach on the case study of La Spezia (Italy) 贻贝可持续生产的环境热点评价与改进——以意大利拉斯佩齐亚为例的LCA方法
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-10-17 DOI: 10.1016/j.cesys.2025.100352
Letizia Caroscio , Cristian Chiavetta , Alessandra Bonoli
This study presents a Life Cycle Assessment (LCA) of mussel farming in the Gulf of La Spezia (Liguria, Italy), a site of particular interest due to its proximity to the Cinque Terre National Park, the presence of a major industrial port, and the coexistence with traditional aquaculture practices. Innovatively, this study combines LCA with alternative scenarios analysis to explore circular economy strategies in mussel farming, providing practical solutions to reduce environmental impact and valorize by-products.
The results highlight the importance of reducing imports, limiting the use of plastic materials, and optimizing waste management practices. In particular, the farming phase, mainly driven by the import of mussels from abroad, accounts for more than 90 % of the total impacts in 10 out of 11 categories analyzed. Scenario analysis shows that reducing imports by 50 % (Scenario C) decreases impacts by about 42–48 %, while their complete elimination (Scenario D) leads to drastic reductions, exceeding 85 % in all categories and reaching up to 97 % for Global Warming.
The goal is to advance toward a sustainable and circular blue economy model that supports environmental protection, promotes responsible food, and contributes to the development of the local economy while also addressing new production scenarios.
本研究提出了拉斯佩齐亚湾(意大利利古里亚)贻贝养殖的生命周期评估(LCA),该地点因靠近五渔村国家公园,存在一个主要工业港口,并与传统水产养殖方法共存而特别有趣。创新地,本研究将LCA与替代情景分析相结合,探索贻贝养殖的循环经济策略,提供切实可行的解决方案,以减少对环境的影响和副产品的价值。研究结果强调了减少进口、限制塑料材料使用和优化废物管理实践的重要性。特别是养殖阶段,主要由从国外进口贻贝驱动,在分析的11个类别中,有10个类别占总影响的90%以上。情景分析表明,减少50%的进口(情景C)将使影响减少约42 - 48%,而完全消除进口(情景D)将导致大幅减少,所有类别的减少超过85%,全球变暖的减少高达97%。目标是推进可持续和循环的蓝色经济模式,以支持环境保护,促进负责任的食品,并为当地经济的发展做出贡献,同时解决新的生产方案。
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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 Pub Date : 2025-12-01 Epub 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
LCA of precious metals recovery: Modelling the secondary supply of gold, silver, platinum, palladium and rhodium from an integrated refining plant 贵金属回收的生命周期分析:模拟一个综合精炼厂的金、银、铂、钯和铑的二次供应
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-08-15 DOI: 10.1016/j.cesys.2025.100310
D. Cespi , L. Ciacci , A. Chiarini , E. Trova , C. Acciai , I. Ciabatti , M. Tirinnanzi , F. Passarini
Precious metals are essential elements in modern technology and the green transition, with limited alternatives on the market. Primary production is the main supply source to meet their current demand, with secondary sourcing remaining still quite limited. Indeed, although precious metals could last virtually forever in the anthroposphere, and thus be potentially available for recycling, their value chain is characterized by inefficiencies and material losses that prevent the closure of material flows. In addition to the challenge of improving recovery and recycling processes, there is also the need to quantify the environmental impact associated with secondary sources to support informed choices.
In this work, we apply life cycle assessment (LCA) to estimate the potential environmental impacts associated with an integrated refining process for precious metals (i.e., gold, silver, platinum, palladium, and rhodium), recovered from heterogeneous waste inflows including production scrap, spent catalysts, liquid waste, and incineration ash. The LCA model was created by mainly using primary data collected from the integrated refining plant, located in northern Italy, complemented with secondary data from the relevant literature. The ReCiPe 2016, IPCC 2021 GWP100, and CED methods were used for life cycle impact assessment. The resulting carbon footprint amounted to 0.43 t CO2 eq/kg Au, 0.01 t CO2 eq/kg Ag, 0.47 t CO2 eq/kg Pd, 0.18 t CO2 eq/kg Pt, 1.55 t CO2 eq/kg Rh, respectively. The insights complement the existing datasets for LCA and are expected to inform stakeholders engaged with the sustainability challenge in the life cycle of precious metals.
贵金属是现代技术和绿色转型的重要元素,市场上的替代品有限。初级生产是满足其当前需求的主要供应来源,二级来源仍然相当有限。事实上,虽然贵金属几乎可以在人类圈中永远存在,因此有可能被回收利用,但它们的价值链的特点是效率低下和材料损失,阻碍了物质流动的关闭。除了改进回收和再循环过程的挑战外,还需要量化与二手来源有关的环境影响,以支持知情选择。在这项工作中,我们应用生命周期评估(LCA)来评估与贵金属(即金、银、铂、钯和铑)的综合精炼过程相关的潜在环境影响,这些贵金属是从包括生产废料、废催化剂、废液和焚烧灰在内的异质废物流入中回收的。LCA模型的创建主要使用了从位于意大利北部的综合炼油厂收集的原始数据,并辅以相关文献中的次要数据。使用ReCiPe 2016、IPCC 2021 GWP100和CED方法进行生命周期影响评估。所得碳足迹分别为0.43 t CO2当量/kg Au、0.01 t CO2当量/kg Ag、0.47 t CO2当量/kg Pd、0.18 t CO2当量/kg Pt、1.55 t CO2当量/kg Rh。这些见解补充了LCA的现有数据集,预计将为参与贵金属生命周期可持续性挑战的利益相关者提供信息。
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引用次数: 0
Life cycle assessment of a commercial-scale valorized grocery food waste product and its potential use as a sustainable feed input for egg production 商业规模食品杂货垃圾的生命周期评估及其作为鸡蛋生产可持续饲料投入的潜在用途
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-10-23 DOI: 10.1016/j.cesys.2025.100364
Shaiyan Siddique , Vivek Arulnathan , Ian Turner , Rehan Sadiq , Nathan Pelletier
Food waste is a major sustainability challenge in modern society. Livestock production also presents core sustainability challenges, notably due to its demand for feed inputs and associated impacts. Directly valorizing food waste to livestock feed at a commercial scale has hence emerged as a potential strategy to solve both problems. However, case studies of such systems are limited, particularly in western countries, representing an important knowledge gap. This study reports a cradle-to-gate Life Cycle Assessment of a commercial-scale grocery waste-to-poultry feed input production system based in Pennsylvania, and the use of the resultant feed product for egg production in Canada. Findings for the valorized input product system showed a net environmental benefit for climate change and eutrophication impact categories due to avoided landfill emissions when no landfill gas collection is assumed. Using feed containing 5 % valorized product in egg production reduced the life cycle environmental impacts of conventional Canadian eggs in 10 out of 11 impact categories, including a 17 % impact reduction in climate change at the 20-year horizon. However, fossil fuel depletion saw a 57 % increase in impacts, due to process and technical inefficiencies in the studied product system and Pennsylvania's reliance on fossil fuel for electricity production. Contribution, scenarios, and sensitivity analyses highlighted the importance of utilizing green energy sources, along with efficient transportation and substrate drying technologies. The study also highlighted the need for further research to optimize the inclusion rate of the valorized product in poultry feeds, and better resolved regional, infrastructural, and logistical contexts.
食物浪费是现代社会可持续发展面临的一个重大挑战。畜牧业生产也面临着核心的可持续性挑战,特别是由于其对饲料投入的需求及其相关影响。因此,在商业规模上直接将食物垃圾转化为牲畜饲料已成为解决这两个问题的潜在策略。然而,这种系统的案例研究有限,特别是在西方国家,这代表了一个重要的知识差距。本研究报告了基于宾夕法尼亚州的商业规模食品杂货垃圾到家禽饲料投入生产系统的从摇篮到大门的生命周期评估,以及在加拿大将所得饲料产品用于鸡蛋生产。对价值化投入产品系统的研究结果表明,在假定不收集垃圾填埋气体的情况下,由于避免了垃圾填埋排放,对气候变化和富营养化影响类别具有净环境效益。在鸡蛋生产中使用含有5%增值产品的饲料,在11个影响类别中的10个类别中减少了传统加拿大鸡蛋生命周期对环境的影响,包括在20年内对气候变化的影响减少17%。然而,由于所研究产品系统的工艺和技术效率低下,以及宾夕法尼亚州对化石燃料发电的依赖,化石燃料枯竭的影响增加了57%。贡献、情景和敏感性分析强调了利用绿色能源以及高效运输和基材干燥技术的重要性。该研究还强调,需要进一步研究以优化该增值产品在家禽饲料中的纳入率,并更好地解决区域、基础设施和物流问题。
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引用次数: 0
Paving the way for more sustainable lithium-ion battery recycling routes 为更可持续的锂离子电池回收路线铺平道路
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-10-24 DOI: 10.1016/j.cesys.2025.100344
Marvin Gornik , Daniel Habermeier , Reiner Sojka , Nicolas Bucher , Denise Ott
This study evaluates global, currently existing industrial lithium-Ion battery (LIB) recycling processes from a technical, economic as well as environmental point of view. The focus lies in the comprehensive life cycle assessment (LCA) of these technologies in one single flexible model. Out of several analyzed publications, nine different industrial life cycle inventories were analyzed in detail and compared via LCA with similar system boundaries and background data. Minor adjustments were made to ensure a fair comparison. The results indicate variations in the degree of detail among the utilized inventories, with discrepancies observed, such as variations in coverage of pretreatment steps. This study identified trends indicating that hydrometallurgical treatments offer greater potential for reducing environmental burdens. This is primarily attributed to the wider range of materials recovered. Additionally, the LCA results of the complete life cycle of a LIB were analyzed using two different calculation approaches: the widely used End-of-Life (EoL) approach in LCA and the circular footprint formula (CFF), a recently introduced methodology by the European Union.
本研究从技术、经济和环境的角度评估了全球现有的工业锂离子电池(LIB)回收过程。重点是在一个单一的灵活模型中对这些技术进行综合生命周期评估(LCA)。在几份分析的出版物中,我们详细分析了9种不同的工业生命周期清单,并通过LCA与类似的系统边界和背景数据进行了比较。为了保证公平的比较,做了一些小的调整。结果表明,在使用的清单之间的细节程度的变化,观察到的差异,如预处理步骤的覆盖范围的变化。这项研究确定的趋势表明,湿法冶金处理提供了更大的潜力,以减少环境负担。这主要是由于回收的材料范围更广。此外,使用两种不同的计算方法对LIB完整生命周期的LCA结果进行了分析:LCA中广泛使用的生命周期结束(EoL)方法和循环足迹公式(CFF),这是欧盟最近引入的方法。
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引用次数: 0
Product-as-a-service transition for original equipment manufacturers: Challenges, performance metrics, and design guidelines – The case of electrical and electronic equipment 原始设备制造商的产品即服务转型:挑战,性能指标和设计指南-电气和电子设备的情况
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-09-18 DOI: 10.1016/j.cesys.2025.100330
J. Hidalgo-Crespo , Paulina Golinska-Dawson , Andreas Riel
Product-as-a-Service (PaaS) is a circular business model that allows original equipment manufacturers (OEMs) to enhance their product offerings, and capture the economic value by cascading value retention processes like repair, reuse, refurbishment, remanufacturing, and afterward recycling. The shift from traditional product ownership models to PaaS models requires a systemic transformation in how products are designed, delivered, and supported. In this paper we focus on the PaaS models for electrical and electronic equipment (EEE) for consumer markets. To ensure successful deployment we identify four key pillars of PaaS transformation: product design, service offerings, enabling technologies and supporting infrastructure. Through this research, we explore how identified challenges can be linked to indicators and guidelines as potential solutions for each of the four pillars. By applying PRISMA and bibliometric analysis, we identified 229 challenges, 182 indicators, and 169 design barriers and categorize them within the four fundamental pillars of PaaS: products, services, technologies, and infrastructure. Our findings highlight a notable deficiency in performance indicators and design guidelines related to both infrastructure and technology, resulting in a lack of methods and tools to support the development of circular PaaS offerings and ecosystems. This study suggests relating challenges, performance indicators, and design guidelines with each other for ultimately coming up with PaaS decision guidance for both designers and decision makers.
产品即服务(PaaS)是一种循环商业模式,它允许原始设备制造商(oem)增强其产品供应,并通过诸如维修、再利用、翻新、再制造和随后的回收等层叠价值保留过程获取经济价值。从传统的产品所有权模型到PaaS模型的转变需要在如何设计、交付和支持产品方面进行系统的转换。在本文中,我们关注的是面向消费者市场的电子电气设备(EEE)的PaaS模型。为了确保成功部署,我们确定了PaaS转型的四个关键支柱:产品设计、服务提供、启用技术和支持基础设施。通过这项研究,我们探索了如何将已确定的挑战与指标和指导方针联系起来,作为四大支柱的潜在解决方案。通过应用PRISMA和文献计量分析,我们确定了229个挑战、182个指标和169个设计障碍,并将它们归类为PaaS的四个基本支柱:产品、服务、技术和基础设施。我们的研究结果突出了与基础设施和技术相关的性能指标和设计指南的显着缺陷,导致缺乏支持循环PaaS产品和生态系统开发的方法和工具。本研究建议将挑战、性能指标和设计指南相互联系起来,最终为设计师和决策者提供PaaS决策指导。
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引用次数: 0
Assessment of technologies and water circularity in mining processes: An innovative methodological approach 采矿过程中技术和水循环的评估:一种创新的方法方法
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-10-14 DOI: 10.1016/j.cesys.2025.100356
Marco A. Vargas , Luis A. Cisternas , Daniel Calisaya-Azpilcueta
The rapid expansion of mining operations has accelerated water resource depletion and increased energy consumption. To tackle these issues, the circular economy provides a framework for managing resource use and reducing environmental impacts. This study introduces an innovative method for assessing circularity in mineral processing, supported by a case study that demonstrates the methodology. The approach is based on circularity indices and employs Monte Carlo simulations to account for epistemic uncertainties that are typical in this field. If the results are not sufficiently robust, global sensitivity analysis is utilized to pinpoint critical variables that require refinement to enhance the outcomes. Additionally, multicriteria decision analysis methods are applied to further the study. In a case study focused on copper concentration through flotation, optimizing water recovery methods significantly improved water circularity metrics. Furthermore, dewatering technologies increased the system's circularity by 28 %, with similar improvements across different setups, reducing water extraction by approximately 42 % and lowering water loss from 0.56 in the base case to 0.29, a 48.6 % decrease. This highlights the effectiveness of dewatering technologies in circular resource management. Then, by applying multicriteria decision-making methods and giving more weight to general indicators related to the water–energy nexus, paste tailings thickening technology was identified as the best option for improving circularity and advancing sustainability. This methodology provides a solid foundation for assessing the transition from a recirculation-based economy to a truly circular model, offering global applicability for comparing technologies, companies, and other relevant factors in mineral processing.
采矿业务的迅速扩大加速了水资源的枯竭和能源消耗的增加。为了解决这些问题,循环经济提供了一个管理资源使用和减少环境影响的框架。本研究介绍了一种评估矿物加工循环的创新方法,并通过一个案例研究来证明该方法。该方法基于循环指数,并采用蒙特卡罗模拟来解释该领域典型的认知不确定性。如果结果不够稳健,则使用全局敏感性分析来确定需要改进以增强结果的关键变量。此外,还应用多准则决策分析方法进行了进一步的研究。在一个以浮选富集铜为重点的案例研究中,优化水回收方法显著提高了水循环度指标。此外,脱水技术将系统循环度提高了28%,在不同的设置中也有类似的改进,减少了约42%的水提取,将失水从基本情况的0.56降低到0.29,减少了48.6%。这突出了脱水技术在循环资源管理中的有效性。然后,通过应用多准则决策方法,赋予与水能关系相关的一般指标更多权重,确定膏体尾矿浓缩技术是改善循环性和提高可持续性的最佳选择。这种方法为评估从循环经济向真正循环模式的过渡提供了坚实的基础,为比较矿物加工中的技术、公司和其他相关因素提供了全球适用性。
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引用次数: 0
Financial feasibility and optimization of anaerobic digestion systems for sustainable waste management: A comprehensive global analysis 经济可行性和优化厌氧消化系统的可持续废物管理:一个全面的全球分析
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-09-26 DOI: 10.1016/j.cesys.2025.100339
Ali Marefat , Abooali Golzary , Fumitake Takahashi , Donald Huisingh
Effective management of organic waste plays a vital role in addressing environmental challenges and advancing sustainable development goals. This review article provides a comprehensive financial assessment of anaerobic digestion (AD) systems for treating the organic fraction of municipal solid waste (OFMSW). Previous studies on AD systems have largely been confined to local case studies with findings that cannot be generalized beyond their specific regions, and they have often overlooked the combined influence of technical, economic, and political factors on financial performance. The study begins by identifying the gaps and limitations in existing financial models for AD systems. It then develops an enhanced financial framework and uses scenario-based analyses to assess the financial feasibility of AD technologies. The model outputs indicate that the financial feasibility of AD systems is heavily influenced by national energy policies and environmental regulations. It is revealed that insufficient government support for energy tariffs—particularly in countries experiencing economic instability—serves as a major barrier to the cost-effectiveness of AD systems. In contrast, in economically stable regions, the financial sustainability of these systems is primarily challenged by stringent environmental regulations specifically related to digestate disposal. To overcome these challenges and further strengthen the financial performance of AD systems, future research should prioritize AI-driven optimization to enhance operational efficiency, reduce costs, increase energy output, and ultimately improve financial sustainability. By addressing existing barriers and proposing actionable recommendations, this review aims to foster the adoption of AD technologies as a cornerstone of sustainable waste management practices.
有效管理有机废物对应对环境挑战和推进可持续发展目标至关重要。本文综述了厌氧消化(AD)系统处理城市固体废物(OFMSW)有机部分的综合财务评估。以前对AD系统的研究主要局限于当地的案例研究,其结果不能推广到特定区域之外,而且往往忽视了技术、经济和政治因素对财务绩效的综合影响。该研究首先确定了AD系统现有财务模型中的差距和局限性。然后,它开发了一个增强的财务框架,并使用基于场景的分析来评估AD技术的财务可行性。模型结果表明,可持续发展系统的财务可行性受到国家能源政策和环境法规的严重影响。研究表明,政府对能源关税的支持不足——特别是在经历经济不稳定的国家——是AD系统成本效益的主要障碍。相比之下,在经济稳定的地区,这些系统的财务可持续性主要受到严格的环境法规的挑战,特别是与消化处理有关的法规。为了克服这些挑战并进一步加强防空系统的财务绩效,未来的研究应优先考虑人工智能驱动的优化,以提高运营效率、降低成本、增加能源产出,最终提高财务可持续性。通过解决现有的障碍和提出可行的建议,本审查旨在促进采用可持续废物管理技术,作为可持续废物管理做法的基石。
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引用次数: 0
Unlocking sustainable production pathways: Digital transformation driving green dual innovation in Chinese enterprises 解锁可持续生产路径:数字化转型推动中国企业绿色双创新
IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-12-01 Epub Date: 2025-07-20 DOI: 10.1016/j.cesys.2025.100301
Tian Xia , Xudong Chen
In the context of accelerating digital transformation and increasing environmental pressures, this study investigates how enterprise digitalization influences green dual innovation—comprising green exploratory innovation (EI) and green developmental innovation (DI)—within Chinese A-share listed firms from 2016 to 2023. Drawing upon fixed-effects and triple difference models, we empirically examine the mechanisms through which digital transformation (DCG) enhances green innovation and assess the mediating role of R&D investment and the moderating effect of government subsidies (GS). Results reveal that digital transformation significantly promotes both EI and DI, with a stronger effect on EI. R&D investment fully mediates this relationship, indicating that digital capabilities boost green innovation primarily through enhanced research capacity. Government subsidies exhibit a dual effect: they positively moderate the impact of digital transformation on EI, while dampening its influence on DI, possibly due to over-reliance on external funding. Heterogeneity analysis through triple difference methods uncovers substantial regional and industry-level variation—particularly among high-tech and heavily polluting firms in Eastern China—where digital transformation's green effects are constrained by strategic short-termism or technological limitations. These findings offer theoretical insights and practical implications for firms and policymakers aiming to align digital strategy with green transformation objectives under sustainability mandates.
本文以2016 - 2023年中国a股上市公司为研究对象,研究了数字化对绿色探索性创新(EI)和绿色发展性创新(DI)双重创新的影响。利用固定效应模型和三重差异模型,实证研究了数字化转型促进绿色创新的机制,并评估了研发投资的中介作用和政府补贴的调节作用。结果表明,数字化转型显著促进了EI和DI,且对EI的影响更强。研发投资完全中介了这一关系,表明数字能力主要通过提高研究能力来促进绿色创新。政府补贴表现出双重效应:它们积极调节数字化转型对EI的影响,同时抑制其对DI的影响,这可能是由于过度依赖外部资金。通过三重差异方法进行的异质性分析揭示了大量的区域和行业层面的差异,特别是在中国东部的高科技和重污染企业中,数字转型的绿色效应受到战略短期主义或技术限制的制约。这些发现为企业和政策制定者提供了理论见解和实践意义,旨在使数字战略与可持续发展要求下的绿色转型目标保持一致。
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Cleaner Environmental Systems
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