Energy for Sustainable Development最新文献_第2页

Risk assessment of salt cavern hydrogen storage projects based on spherical fuzzy sets and cumulative prospect theory - TOPSIS 基于球面模糊集和累积前景理论的盐穴储氢项目风险评价

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-29 DOI: 10.1016/j.esd.2025.101923

Yuanyuan Ge , Pengcheng Xiang , Xiang Hao

Human activities in resource exploitation have inevitably led to irreversible environmental impacts, among which abandoned salt caverns from salt mining are a representative case. Driven by the “dual carbon” goals, low-carbon hydrogen energy has attracted growing interest. In this context, the utilization of abandoned salt caverns for hydrogen storage has become a key area of investigation. Firstly, salt cavern hydrogen storage (SCHS) is still in its infancy, and it is crucial to identify key risks and implement preventive measures to minimize unnecessary losses. Secondly, relying on a single model has proven insufficient for risk assessment in this emerging domain. In response, this paper considers the fuzziness of information and the risk attitude of experts in the evaluation process and establishes a new assessment framework. Finally, taking the SCHS project in China as a case study, the effectiveness and robustness of the framework are verified through sensitivity and comparative analysis. The findings indicate that the critical risks of SCHS projects are volume shrinkage, injection and withdrawal pressure, and public acceptance. The overall risk is 0.5524, corresponding to a medium risk level. Decision-making managers can take focused actions to mitigate risks, reduce potential losses, and enhance the stability of SCHS project operations.

人类资源开发活动不可避免地造成了不可逆转的环境影响，其中盐矿开采造成的废弃盐穴就是一个典型的例子。在“双碳”目标的推动下，低碳氢能引起了越来越多的关注。在此背景下，利用废弃盐穴储氢成为研究的重点领域。首先，盐穴储氢技术（SCHS）仍处于起步阶段，识别关键风险并实施预防措施以最大限度地减少不必要的损失至关重要。其次，在这一新兴领域，依赖单一模型已被证明不足以进行风险评估。为此，本文考虑了评价过程中信息的模糊性和专家的风险态度，建立了新的评价框架。最后，以中国SCHS项目为例，通过敏感性分析和对比分析验证了该框架的有效性和鲁棒性。研究结果表明，SCHS项目的关键风险是体积收缩、注入和退出压力以及公众接受程度。总体风险为0.5524，属于中等风险水平。决策管理者可以采取有针对性的行动来降低风险，减少潜在损失，并提高SCHS项目运营的稳定性。

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引用次数: 0

Rethinking default ‘K’ values in landfill greenhouse gas emission modeling: A case study from Nepal using LandGEM 对垃圾填埋场温室气体排放模拟中默认“K”值的重新思考：以尼泊尔LandGEM为例

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-29 DOI: 10.1016/j.esd.2025.101918

Yubraj Dahal , Sandhya Babel

Municipal solid waste (MSW) landfills play a big role in greenhouse gas (GHG) emissions, especially methane, contributing to global warming. However, this methane is also a promising renewable energy source. This study is the first to estimate the amount of landfill gas (LFG) emissions and the potential for energy recovery at three major landfill sites (LFSs) in Nepal: Sisdole, Pokhara, and Karaute Dada, using the Landfill Gas Emissions Model (LandGEM). The results showed that Sisdole emits between 57.86 and 60.21 million cubic meters (m³) of methane, Pokhara between 2.8 and 2.94 million m³, and Karaute Dada between 1.47 and 1.49 million m³. For 2025, the total revenue potential was estimated at 32.72–34.04 million United States Dollars (USD) for Sisdole, 1.59–1.66 million USD for Pokhara, and 0.83–0.84 million USD for Karaute Dada from energy generation and carbon credit. These findings highlight the vast renewable energy potential of Nepal's landfills. The study reveals that default LandGEM methane generation constant (K) values underestimate methane generation, especially in areas with high rainfall like Pokhara. It underscores the need for using a locally derived K value. Using locally calculated K values gives more accurate results and is important for better planning of methane recovery and energy projects.

城市固体垃圾填埋场在温室气体（GHG）排放中扮演着重要角色，尤其是甲烷，导致全球变暖。然而，这种甲烷也是一种很有前途的可再生能源。本研究首次使用垃圾填埋气体排放模型（LandGEM）估算了尼泊尔三个主要垃圾填埋场（Sisdole、Pokhara和Karaute Dada）的垃圾填埋气体（LFG）排放量和能源回收潜力。结果显示，西多尔的甲烷排放量在5786万立方米到6021万立方米之间，博卡拉在280万立方米到294万立方米之间，卡拉特达达在147万立方米到149万立方米之间。到2025年，预计Sisdole的总收入潜力为3272万至3404万美元，Pokhara为159万至166万美元，Karaute Dada为0.83万至84万美元，来自能源生产和碳信用。这些发现凸显了尼泊尔垃圾填埋场巨大的可再生能源潜力。研究表明，LandGEM默认的甲烷生成常数(K)值低估了甲烷的生成，特别是在博卡拉等降雨较多的地区。它强调了使用局部派生的K值的必要性。使用局部计算的K值可以得到更准确的结果，这对于更好地规划甲烷回收和能源项目很重要。

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引用次数: 0

Biomass lock-in and a niche innovation: A socio-technical analysis of cooking energy in rural Kinshasa 生物质锁定和利基创新：金沙萨农村烹饪能源的社会技术分析

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-26 DOI: 10.1016/j.esd.2025.101920

Theresia Besala Tshimungu , Berdi Nondi Mola , Keiichi Ishii , Bienvenu Lokonda Mopendo , Déogracias Bodi Mava

Cooking energy in rural Democratic Republic of Congo relies entirely on biomass, generating severe health, economic, and labor burdens, while clean alternatives remain absent from policy priorities. This study investigates biomass dependence and assesses the potential of cassava-based ethanol—now used only as an artisanal beverage—as a cooking fuel. A mixed-methods design (n = 287) combined a household survey, participant observation of artisanal ethanol production, a laboratory production of ethanol, its replication in rural conditions using local equipment, and comparative cooking experiments. Multinomial logistic regression assessed determinants of fuel dependence across seasons. Results show that biomass reliance is reinforced by distance, seasonality, income constraints, and the physical effort required to obtain fuel. Health impacts, especially respiratory and gastric problems, are strongly associated with woodfuel use. Experimental findings indicate that cassava ethanol can deliver clean combustion and competitive cooking performance, though technical bottlenecks currently limit its viability as a household fuel.

刚果民主共和国农村地区的烹饪能源完全依赖生物质能，造成严重的健康、经济和劳动力负担，而清洁能源仍然没有成为政策重点。这项研究调查了生物质依赖性，并评估了木薯乙醇作为烹饪燃料的潜力，木薯乙醇现在只被用作手工饮料。混合方法设计（n = 287）结合了家庭调查、手工乙醇生产的参与者观察、乙醇的实验室生产、在农村条件下使用当地设备的复制以及比较烹饪实验。多项逻辑回归评估了不同季节燃料依赖的决定因素。结果表明，距离、季节性、收入限制和获得燃料所需的体力劳动都加强了对生物质的依赖。对健康的影响，特别是呼吸道和胃部问题，与木材燃料的使用密切相关。实验结果表明，木薯乙醇可以提供清洁燃烧和具有竞争力的烹饪性能，尽管技术瓶颈目前限制了它作为家庭燃料的可行性。

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引用次数: 0

Design and evaluation of a hybrid solar-powered water purification and energy system for rural and semi-urban households 农村和半城市家庭混合太阳能水净化和能源系统的设计和评价

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-25 DOI: 10.1016/j.esd.2025.101917

Swarnendu Bhattacharya, Priyanka Sarkar

Availability and access to safe drinking water and basic energy services remain a critical challenge in the rural and semi-urban areas, particularly in areas with unreliable grid connectivity. This research discusses the design and evaluation of an integrated hybrid solar-powered water purification system, using Ultrafiltration (UF) and Ultraviolet (UV) technologies and auxiliary facilities, including a light and USB charging facility. This system, powered by a 12 V polycrystalline solar panel and assisted by a 12 V sealed maintenance-free lead-acid battery, is optimized for households with overhead storage tanks, thereby eliminating the requirement of an energy-intensive booster pump, though there is provision for it, which is optional. This system has a 7-l water storage capacity, which fills within an hour, and is equipped with facilities like integrated light via a 5 W LED bulb and a charging facility through a USB port. It is designed for a 2-day autonomy, ensuring continued functionality even in adverse conditions, and features an in-built protection against overcharging, over-discharging, and short circuits. Provision for grid operation is included, with flexibility for users to select preferred power sources, ensuring reliability under varying weather conditions. This scalable and holistic system is also suitable for households in post-disaster situations when electricity is scarce, with or without the use of booster pumps. Durability was effectively demonstrated in case studies reflective of effective battery backup and reliable performance. The distinguishing features of the system that offer a competitive advantage over other conventional systems available in the market include a quantified output of 28 l per day of purified water and 5 h of combined power for 5 W load from a low-power SPV and battery based setup with a focus on hybrid system design, energy-efficient water purification and emphasis on affordability for the marginalized communities. This innovative system, offering a sustainable solution to human health, power connectivity and disaster preparedness in resource-constrained communities, aligns with the sustainable global development goals, particularly SDG 6 (Clean Water and Sanitation) and SDG 7 (Affordable and Clean Energy).

在农村和半城市地区，特别是在电网连接不可靠的地区，提供和获得安全饮用水和基本能源服务仍然是一项重大挑战。本研究讨论了一种集成的混合太阳能水净化系统的设计和评估，该系统采用超滤（UF）和紫外线（UV）技术以及辅助设施，包括照明和USB充电设施。该系统由12v多晶太阳能电池板供电，并由12v密封免维护铅酸电池辅助，针对有头顶储罐的家庭进行了优化，从而消除了对能源密集型增压泵的需求，尽管有提供，这是可选的。该系统的储水量为7升，可以在一小时内充满水，并配备了5w LED灯泡的集成灯和USB接口的充电设施。它的设计为2天的自主性，即使在恶劣的条件下也能确保持续的功能，并具有内置的防过充、过放电和短路保护。包括电网运行的规定，用户可以灵活选择首选电源，确保在不同天气条件下的可靠性。这种可扩展的整体系统也适用于灾后电力短缺的家庭，无论是否使用增压泵。耐久性在案例研究中得到了有效证明，反映了有效的备用电池和可靠的性能。与市场上现有的其他传统系统相比，该系统的显著特点包括：每天28升纯净水的量化输出和5w负载下5小时的综合功率，来自低功率SPV和基于电池的设置，重点是混合系统设计，节能的水净化，并强调边缘化社区的可负担性。这一创新系统为资源受限社区的人类健康、电力连接和备灾提供了可持续解决方案，符合可持续全球发展目标，特别是可持续发展目标6（清洁水和卫生设施）和可持续发展目标7（负担得起的清洁能源）。

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引用次数: 0

Enhancing anaerobic digestion of food waste using cauliflower stem-banana peel: Improved alkalinity and microbial stability—A case study in Chennai, India 利用花椰菜茎-香蕉皮促进食物垃圾的厌氧消化：改善碱度和微生物稳定性——印度金奈的一个案例研究

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-25 DOI: 10.1016/j.esd.2025.101921

Athithyan Ilangovan , Sri Bala Kameswari Kanchinadham

The volatile fatty acids (VFAs) build-up impedes the anaerobic digestion of food waste by lowering reactor pH and causing system instability. To address this, an abundant agricultural byproduct, banana peel (BP), and cruciferous vegetable waste (CL–cauliflower stem waste) were evaluated as co-substrates for food waste. Their alkaline nature offers buffering capacity, enhancing pH stability and mitigating acidification during digestion. Anaerobic co-digestion experiments were conducted using food waste with banana peel (FWBG) and food waste with cruciferous vegetable, cauliflower stem waste (FWC) to improve alkalinity and overall reactor stability. Results showed that, pH in both FWC and FWBG was acidic due to the rapid breakdown of food waste, but stabilized to an optimal range with improved alkalinity on co-substrate addition. The cumulative biogas generation was significantly enhanced in the co-digestion reactors, by 30 % in FWC and 22 % in FWBG, compared to food waste (FW) alone. The volatile fatty acid (VFA) profile indicated the presence of acetic, propionic, butyric, and valeric acids in the FW, whereas only acetic acid was dominant in FWC, suggesting more efficient VFA conversion to methane. Kinetic studies revealed FWC had the highest biogas production rate, Rm = 800.24 mL/day, with a minimal lag phase, λ = 0.0071 days. Metagenomic analysis showed that co-digestion enriched methanogenic archaea (e.g., Methanosarcinia) and syntrophic bacteria (e.g., Clostridia, Negativicutes), enhancing microbial resilience. Scaling up this approach to 1 t per day could reduce annual CO₂ emissions by 1062–1854 kg. This study provides a practical pathway to transform food and vegetable waste into clean energy, contributing to SDG 7 (Affordable and Clean Energy) and SDG 12 (Responsible Consumption and Production) by integrating biogas production with agricultural residue utilization.

挥发性脂肪酸（VFAs）的积累通过降低反应器pH值和引起系统不稳定来阻碍食物垃圾的厌氧消化。为了解决这一问题，研究人员评估了丰富的农业副产品香蕉皮（BP）和十字花科蔬菜废物（cl -花椰菜茎废物）作为食物垃圾的共底物。它们的碱性提供缓冲能力，增强pH稳定性，减轻消化过程中的酸化。为提高反应器的碱度和整体稳定性，分别对食物垃圾与香蕉皮（FWBG）和食物垃圾与十字花科蔬菜、花椰菜茎（FWC）进行厌氧共消化试验。结果表明，由于食物垃圾的快速分解，FWC和FWBG的pH值都呈酸性，但随着共底物的加入，碱度的提高，pH值稳定在最佳范围内。与单独的食物垃圾（FW）相比，共消化反应器中的累积沼气产生量显著增加，在FWC中增加30%，在FWBG中增加22%。挥发性脂肪酸（VFA）谱显示FW中存在乙酸、丙酸、丁酸和戊酸，而FWC中只有乙酸占主导地位，表明VFA转化为甲烷的效率更高。动力学研究表明，FWC产气率最高，Rm = 800.24 mL/d，滞后期最小，λ = 0.0071 d。宏基因组分析表明，共消化富集了产甲烷古菌（如Methanosarcinia）和合养细菌（如Clostridia， Negativicutes），增强了微生物的复原力。将这种方法扩大到每天1吨，每年可减少1062-1854公斤的二氧化碳排放量。本研究提供了一条将食物和蔬菜垃圾转化为清洁能源的实用途径，通过将沼气生产与农业残留物利用相结合，为可持续发展目标7（负担得起的清洁能源）和可持续发展目标12（负责任的消费和生产）做出贡献。

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引用次数: 0

A multi-stakeholder assessment of the implications of non-energy policies on renewable energy development in the Philippines 非能源政策对菲律宾可再生能源发展影响的多方利益相关者评估

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-22 DOI: 10.1016/j.esd.2025.101919

Ian B. Benitez , Shobhakar Dhakal

Achieving a just and accelerated renewable energy (RE) transition in the Philippines requires not only technological innovation but also coherent and cross-sectoral policy alignment. Non-energy policies can facilitate or hinder the RE development. Non-energy policies, particularly those governing land use, permitting, and environmental regulation, and other significantly shape the feasibility of RE deployment. However, the analyses and evidences on implications of the non-energy policies on RE development are scarce, especially in the context of developing countries. This study provides a comprehensive, stakeholder-informed assessment of 43 national-level policy instruments across five domains in the Philippines: Energy Policy and Regulation, Climate Change and Sustainability, Environmental and Natural Resource Conservation, Agriculture and Rural Development, and Land Use and Property Rights. In this study, using a modified Sustainable Development Goals (SDG) interaction framework, stakeholders from academia, government, industry, and non-governmental organizations evaluated each policy's influence on RE development using a seven-point scale. Weighted average (WA) scores were computed to determine whether policies act as enablers or constraints. Results show that energy and climate policies are strongly supportive due to clear mandates and institutional coordination, whereas land governance and agrarian reform policies are viewed as restrictive because of procedural uncertainty and tenure risks. Environmental policies are generally enabling but raise permitting concerns. Divergent stakeholder perceptions underscore the need for inclusive and transparent governance. The study concludes that accelerating the RE transition will depend on harmonizing institutional mandates, reforming land-use frameworks, enabling decentralized systems, and strengthening technical and governance capacity across all sectors.

在菲律宾实现公正和加速的可再生能源转型不仅需要技术创新，还需要连贯和跨部门的政策协调。非能源政策可以促进或阻碍可再生能源的发展。非能源政策，特别是那些管理土地使用、许可和环境法规的政策，以及其他重大影响可再生能源部署可行性的政策。然而，关于非能源政策对可再生能源发展的影响的分析和证据很少，特别是在发展中国家。本研究对菲律宾五个领域的43项国家级政策工具进行了全面的、利益相关者知情的评估：能源政策与法规、气候变化与可持续性、环境与自然资源保护、农业与农村发展、土地使用与产权。在本研究中，来自学术界、政府、行业和非政府组织的利益相关者使用7分制评估了每项政策对可再生能源发展的影响，并使用了经过修改的可持续发展目标（SDG）互动框架。计算加权平均（WA）分数来确定策略是作为推动者还是约束。结果表明，由于明确的授权和制度协调，能源和气候政策具有强大的支持性，而由于程序不确定性和权属风险，土地治理和土地改革政策被视为限制性。环境政策总体上是有利的，但也引发了许可方面的担忧。利益相关者的不同看法凸显了包容性和透明度治理的必要性。该研究的结论是，加快可再生能源转型将取决于协调机构授权、改革土地使用框架、实现分散化系统以及加强所有部门的技术和治理能力。

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引用次数: 0

Research progress and engineering applications of technology-driven strategies for solar tracking systems 太阳能跟踪系统技术驱动策略的研究进展与工程应用

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-22 DOI: 10.1016/j.esd.2025.101901

Tingting Zou , Yanrong Xu , Xudong Yang , Hengjie Xu , Ruolin Li , Entong Xia , Fei Chen

Under the driving forces of global energy structure transformation and carbon neutrality goals, solar tracking systems have emerged as a critical technology for enhancing the efficiency of photovoltaic and solar-thermal conversion. In recent years, these systems have attracted extensive research and application worldwide. This paper systematically reviews the technological development trajectory of solar tracking systems, providing a comprehensive analysis based on five dimensions: drive types (active/passive), degrees of freedom (single-axis/dual-axis), control algorithms (open-loop/closed-loop/hybrid), tracking motion (continuous/discontinuous), and the orientation of the tracking axes. Through a bibliometric analysis of the references, this research further explores the impact of various factors—including geographical location, climatic conditions, and tracking modes—on solar tracking accuracy. Additionally, it analyzes the engineering application potential of tracking systems in diverse fields such as industrial energy supply, drying distillation technology, and intelligent shading. Finally, based on the current research status of solar tracking device, this paper evaluates the deployment feasibility of solar tracking systems from technical, economic, environmental, and social perspectives. It also proposes theoretical insights and technical approaches to optimize advanced solar tracking technologies and guide future development directions.

在全球能源结构转型和碳中和目标的推动下，太阳能跟踪系统已成为提高光伏和光热转换效率的关键技术。近年来，这些系统在世界范围内得到了广泛的研究和应用。本文系统回顾了太阳能跟踪系统的技术发展轨迹，从驱动类型（主动/被动）、自由度（单轴/双轴）、控制算法（开环/闭环/混合）、跟踪运动（连续/不连续）和跟踪轴方向五个维度进行了综合分析。通过文献计量学分析，进一步探讨地理位置、气候条件、跟踪方式等因素对太阳跟踪精度的影响。此外，分析了跟踪系统在工业能源供应、干燥蒸馏技术、智能遮阳等多个领域的工程应用潜力。最后，根据太阳能跟踪装置的研究现状，从技术、经济、环境和社会四个方面对太阳能跟踪系统的部署可行性进行了评估。提出优化先进太阳能跟踪技术的理论见解和技术途径，指导未来发展方向。

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引用次数: 0

Techno-Economic assessment of distributed hybrid renewable energy systems across Nigeria's regions using measured resource data 利用实测资源数据对尼日利亚各地区分布式混合可再生能源系统进行技术经济评估

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-18 DOI: 10.1016/j.esd.2025.101913

O.D. Ohijeagbon , M.A. Waheed , O.O. Ajayi , S.O. Ismaila , I.A. Adejumobi

Energy availability is critical to socio-economic development, yet slightly over half of Nigerias population has electricity access, far below the demand of over 200 million people. This study evaluates the techno-economic and environmental viability of distributed 20 MW hybrid energy systems capped at this level under regulatory limits for distributed generation across Nigeria's six geopolitical zones. Using 20 years (2003−2022) of NiMET hourly solar and wind data, six configurations (PSS, WSS, PV–Wind, PV–Wind–NG, NGSS, DSS) were modelled over a 20-year horizon. A full loss-stack approach captured conversion efficiency, fuel price escalation, PV/wind degradation, and grid/BOS/interconnection costs. Systems were assessed on LCOE, NPC, and minimum FiT for positive project value. Results show diesel-based-systems are most costly and carbon-intensive, while PV–Wind–NG hybrids consistently perform best. The lowest cost occurs at Jos with LCOE $0.13/kWh and NPC $14.8 m under 50:50 debt–equity financing. Across other zones, PV–Wind–NG hybrids yield LCOEs of $0.16–0.24/kWh and NPCs of $22–33 m, with natural gas shares ranging from 31 % (Jos) to 50 % (Port-Harcourt). However, the current Band-A FiT (₦134.08/kWh) falls short, as breakeven requires ₦185–334/kWh depending on location. Findings confirm that 20 MW distributed hybrid systems are technically feasible but not yet at grid parity. The Electricity Act 2023, which empowers state-level electricity markets, is therefore critical to enabling deployment. This study provides a data-driven framework to support Nigeria's Energy Transition Plan, SDG 7, and climate commitments, equipping policymakers and investors with actionable insights for decentralized, sustainable electrification.

能源供应对社会经济发展至关重要，但尼日利亚有电力供应的人口略多于一半，远低于2亿多人的需求。本研究在尼日利亚六个地缘政治区域的分布式发电监管限制下，评估了分布式20兆瓦混合能源系统的技术经济和环境可行性。利用NiMET 20年（2003 ~ 2022）的逐时太阳和风数据，模拟了20年的6种配置（PSS、WSS、PV-Wind、PV-Wind - ng、NGSS、DSS）。一个完整的损失堆栈方法可以捕获转换效率、燃料价格上涨、光伏/风能退化以及电网/BOS/互连成本。系统评估了LCOE， NPC和最小FiT为正项目价值。结果显示，以柴油为基础的系统是最昂贵和碳密集的，而PV-Wind-NG混合动力系统一直表现最好。Jos的成本最低，LCOE为0.13美元/千瓦时，NPC为1480万美元，债务股权融资比例为50:50。在其他地区，光伏-风能-天然气混合发电的lcoe为0.16-0.24美元/千瓦时，npc为2200 - 3300万美元，天然气份额从31% （Jos）到50% （Port-Harcourt）不等。然而，目前的Band-A FiT（134.08奈拉/千瓦时）不足，因为根据不同的地区，收支平衡需要奈拉185-334奈拉/千瓦时。研究结果证实，20兆瓦的分布式混合系统在技术上是可行的，但尚未达到电网平价。因此，赋予州一级电力市场权力的《2023年电力法案》对于实现部署至关重要。本研究提供了一个数据驱动的框架，以支持尼日利亚的能源转型计划、可持续发展目标7和气候承诺，为政策制定者和投资者提供可操作的见解，以实现分散的、可持续的电气化。

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引用次数: 0

Using a food-energy nexus lens to explore people's experiences of the cooking journey in African informal settlements 用食物-能源联系的镜头来探索人们在非洲非正式定居点的烹饪之旅

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-17 DOI: 10.1016/j.esd.2025.101914

Heather Price , Fred Orina , Moses Chamba , Tracy Chasima , Line Caes , Limbani Kalumbi , Lusizi Kambalame , Siân E. Lucas , Hellen Meme , Mary Nyikuri , Sean Semple , Isabelle Uny

Solid fuels are still used by over 3 billion people worldwide, including many residents of informal settlements. Most interventions designed to improve people's solid fuel-related health have failed or fallen short of their ambitions. Often, this is because implementers have not fully understood the contexts, cultures and behaviours of the places and people they are working within and with. To address this, our study used a food-energy nexus lens to explore people's experiences of the cooking journey, i.e., decision-making regarding which fuel to use, obtaining fuel and then cooking using that fuel. We videoed ‘go along’ interviews with residents of two African informal settlements during their cooking journeys. Interviews with 15 participants in Mukuru (Kenya) and 15 in Ndirande (Malawi) were analyzed using thematic analysis. Participants' decision-making regarding fuel use was complex, dynamic (considering short-to-long timescales) and context-specific. Participants were aware of some of the household air pollution (and other solid fuel-related) health risks, though there were some misconceptions. The use of waste materials in solid fuel cooking – particularly during ignition – was common. The ‘cooking journey’ framing in this study highlighted the range of risks and challenges experienced across the food-energy nexus beyond household air pollution, including terrain, the built environment and gender-based violence. Broader approaches to understanding the contexts, cultures and behaviours of fuel users in informal settlements, such as our ‘cooking journey’ approach, can support better intervention design, and therefore enable progress towards sustainable development goal 7 - access to affordable, reliable, sustainable and modern energy for all.

全世界有30多亿人仍在使用固体燃料，其中包括许多非正规住区的居民。大多数旨在改善人们与固体燃料有关的健康的干预措施都失败了，或者没有达到它们的目标。通常，这是因为实施者没有完全理解他们工作的地方和人员的背景、文化和行为。为了解决这个问题，我们的研究使用了食物-能源联系的镜头来探索人们在烹饪过程中的经历，即，关于使用哪种燃料的决策，获得燃料，然后使用该燃料烹饪。我们拍摄了两个非洲非正式定居点居民在烹饪之旅中的“随同”采访。对肯尼亚穆库鲁（Mukuru）和马拉维恩德兰德（Ndirande） 15名参与者的访谈进行了专题分析。参与者关于燃料使用的决策是复杂的、动态的（考虑到短期到长期的时间尺度）和具体情况的。与会者意识到一些家庭空气污染（和其他与固体燃料有关的）健康风险，尽管存在一些误解。在固体燃料烹饪中使用废料——特别是在点火过程中——是很常见的。本研究中的“烹饪之旅”框架强调了除家庭空气污染外，食物-能源关系所面临的一系列风险和挑战，包括地形、建筑环境和基于性别的暴力。更广泛地理解非正式住区燃料使用者的背景、文化和行为的方法，例如我们的“烹饪之旅”方法，可以支持更好的干预设计，从而推动实现可持续发展目标7——人人获得负担得起的、可靠的、可持续的现代能源。

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引用次数: 0

Integrated assessment of source separation programs coupled with waste-to-energy systems across diverse country income levels 综合评估不同国家收入水平的源分离方案与废物转化能源系统

IF 4.9 2区工程技术 Q2 ENERGY & FUELS

Energy for Sustainable Development

Pub Date : 2025-12-17 DOI: 10.1016/j.esd.2025.101912

Mohamed Dafalla , Abdulrahman Abdeljaber , Mohamed Abdallah , Wamidh Alsalem

Integrated solid waste management (ISWM) based on waste valorization represents a shift toward more sustainable and resource-efficient practices. This study examined the effect of source separation programs, two bins (wet-dry (WD) and recyclable-nonrecyclable (R-nR)) and three bins, on biochemical, thermochemical, and hybrid ISWM strategies. A comparative techno-economic and environmental assessment was conducted to evaluate the proposed strategies in countries with various economic standards: high-, upper-middle-, lower-middle-, and low-income. The incineration-based strategies achieved the highest energy recovery, ranging from 430 to 708 kWh per ton of collected waste. On the other hand, the WD-AD and 3B-INC strategies had the lowest (37–81 kg CO₂-eq per ton) and highest (140–208 kg CO₂-eq per ton) carbon footprint, respectively, across all income levels. Moreover, the two- and three-bin hybrid strategies were the most profitable for all income levels. Overall, the WD-hybrid strategy was the optimum scenario for high-income countries, whereas the biochemical scenarios were the most eco-efficient for middle- and low-income countries. Regional validation was performed using country-specific inputs, confirming the applicability of the modeled outcomes across diverse economic conditions. The findings underscore the importance of tailoring ISWM strategies to various income levels, among other factors, providing valuable insights into sustainable and eco-efficient waste management practices worldwide.

基于废物价值的固体废物综合管理（ISWM）代表着向更可持续和资源效率更高的做法的转变。本研究考察了源分离方案，两箱（干湿式（WD）和可回收-不可回收（R-nR））和三箱对生物化学、热化学和混合ISWM策略的影响。进行了一项比较技术经济和环境评估，以评价具有不同经济标准的国家的拟议战略：高、中高、中低和低收入。以焚烧为基础的策略实现了最高的能源回收，每吨收集的废物从430到708千瓦时不等。另一方面，在所有收入水平中，WD-AD和3B-INC策略的碳足迹分别最低（每吨37-81千克二氧化碳当量）和最高（每吨140-208千克二氧化碳当量）。此外，两箱和三箱混合策略在所有收入水平下都是最有利可图的。总体而言，对高收入国家而言，生物混合战略是最佳方案，而对中低收入国家而言，生物化学方案是最具生态效率的方案。使用特定国家的输入进行区域验证，确认模型结果在不同经济条件下的适用性。研究结果强调了根据不同收入水平调整ISWM战略的重要性，以及其他因素，为全球可持续和生态高效的废物管理实践提供了宝贵的见解。

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引用次数: 0