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Low-temperature and reversible hydrogen storage advances of light metal borohydrides 轻金属硼氢化物的低温可逆储氢进展
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-18 DOI: 10.1016/j.rser.2024.115000
Shun Wang , Zhenglong Li , Mingxia Gao , Yongfeng Liu , Hongge Pan
{"title":"Low-temperature and reversible hydrogen storage advances of light metal borohydrides","authors":"Shun Wang ,&nbsp;Zhenglong Li ,&nbsp;Mingxia Gao ,&nbsp;Yongfeng Liu ,&nbsp;Hongge Pan","doi":"10.1016/j.rser.2024.115000","DOIUrl":"10.1016/j.rser.2024.115000","url":null,"abstract":"<div><div>Solid-state light metal borohydrides represented by LiBH<sub>4</sub>, NaBH<sub>4</sub>, Mg(BH<sub>4</sub>)<sub>2</sub>, and Ca(BH<sub>4</sub>)<sub>2</sub> with high hydrogen capacity are promising media to store and transport hydrogen safely and efficiently, raising a hope for popularizing electricity-hydrogen coupling systems built on clean and renewable energy. Yet stable thermodynamics and sluggish kinetics of light metal borohydrides remain two key issues to be addressed for achieving the rapid and reversible hydrogen desorption and absorption under mild conditions. In this review, the short introductions for basic hydrogen storage characteristics of light metal borohydrides and fundamental principles of common thermodynamic and kinetic modification strategies are first presented. Then the focus is on the research advances in reducing operation temperature, accelerating reaction rates, and enhancing cyclic reversibility of light metal borohydrides by using these strategies or their synergy. On this basis, the existing challenges and future directions on light metal borohydrides are proposed from novel and specific perspectives, aiming to obtain high performance hydrogen storage materials practically available towards electricity-hydrogen coupling systems.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142444901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anaerobic digestion in global bio-energy production for sustainable bioeconomy: Potential and research challenges 厌氧消化在全球生物能源生产中的应用,促进可持续生物经济:潜力和研究挑战
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-17 DOI: 10.1016/j.rser.2024.114985
Yumin Duan , Zhi Wang , Prabakaran Ganeshan , Taner Sar , Suyun Xu , Karthik Rajendran , Raveendran Sindhu , Parameswaran Binod , Ashok Pandey , Zengqiang Zhang , Mohammad J. Taherzadeh , Mukesh Kumar Awasthi
{"title":"Anaerobic digestion in global bio-energy production for sustainable bioeconomy: Potential and research challenges","authors":"Yumin Duan ,&nbsp;Zhi Wang ,&nbsp;Prabakaran Ganeshan ,&nbsp;Taner Sar ,&nbsp;Suyun Xu ,&nbsp;Karthik Rajendran ,&nbsp;Raveendran Sindhu ,&nbsp;Parameswaran Binod ,&nbsp;Ashok Pandey ,&nbsp;Zengqiang Zhang ,&nbsp;Mohammad J. Taherzadeh ,&nbsp;Mukesh Kumar Awasthi","doi":"10.1016/j.rser.2024.114985","DOIUrl":"10.1016/j.rser.2024.114985","url":null,"abstract":"<div><div>Wastes are unceasingly generated in the world, and most of them can be recycled, reused, or recovered to promote a circular economy. Among waste treatment approaches, the anaerobic digestion (AD) process has been considered as an ideal process due to its ecological benefits (reduction of unpleasant odor, pathogens accumulation, or greenhouse gas emission), social and economic advantages, and energy saving. In addition to biogas production, this process can be used to produce various bioproducts, such as biopolymers, bioplastics, biomass, biofertilizers, and biolipids. Interestingly, the AD process residue or digestate is a nutrient-rich by-product that can be used as a biofertilizer for agronomical purposes to balance N-P cycle in the soils. Despite of numerous benefits of AD, less than 1 % of waste is treated by this process. This process has the potential to be integrated with other waste treatment approaches to increase waste treatment efficiency. Therefore, it is essential to focus on each advantage and clarify ambiguity in order to satisfy more countries for employing AD for waste treatment. In this review, various benefits of AD are evaluated; and its potential impacts on particularly agriculture are examined in detail. Additionally, potential biomass and wastes that can be used for anaerobic digestion worldwide are deliberated. Besides, a critical perspective has been developed on the economic, environmental, and social evaluation of the benefits of AD and, as a final point, focused on an integrated circular cascading approach.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142445236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Liquid air energy storage – A critical review 液态空气储能--重要评论
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-17 DOI: 10.1016/j.rser.2024.114986
Xiaohui She , Huiru Wang , Tongtong Zhang , Yongliang Li , Xuemin Zhao , Yulong Ding , Chen Wang
{"title":"Liquid air energy storage – A critical review","authors":"Xiaohui She ,&nbsp;Huiru Wang ,&nbsp;Tongtong Zhang ,&nbsp;Yongliang Li ,&nbsp;Xuemin Zhao ,&nbsp;Yulong Ding ,&nbsp;Chen Wang","doi":"10.1016/j.rser.2024.114986","DOIUrl":"10.1016/j.rser.2024.114986","url":null,"abstract":"<div><div>Liquid air energy storage (LAES) can offer a scalable solution for power management, with significant potential for decarbonizing electricity systems through integration with renewables. Its inherent benefits, including no geological constraints, long lifetime, high energy density, environmental friendliness and flexibility, have garnered increasing interest. LAES traces its origins to the first liquid air engine attempt in 1899 and liquid air for peak shaving in 1977. Subsequent advancements in the UK, China, and Japan, signify the progress in the field. However, prior discussions regarding LAES applications have been limited, primarily concentrating on coupled configurations while overlooking decoupled setups. This study provides a comprehensive review of LAES, exploring various dimensions: i) functions beyond load shifting, including frequency regulation, black start, and clean fuel; ii) classification of LAES configurations into coupled systems (standalone &amp; hybrid) and decoupled systems (onshore/offshore energy transmission &amp; liquid air vehicle); iii) challenges facing decoupled LAES, particularly efficiency and hence cost associated with liquid air production (∼0.6–0.75 kWh/kg), as well as low round-trip efficiency (∼20–50 %) related to high-grade cold recovery; iv) highlighting the potential of cold/heat recovery in standalone LAES to enhance thermo-economic performance (round-trip efficiency of ∼50–60 %, payback period of ∼20 years) and the integration of extra cold/heat sources in hybrid LAES for further improvement (round-trip efficiency of ∼50–90 %, payback period of ∼3–10 years). This review aims to provide a comprehensive understanding of LAES, address challenges across configurations, and promote the developments in LAES technology.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142444899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A systematic review of modelling methods for studying the integration of hydrogen into energy systems 对研究氢气融入能源系统的建模方法进行系统审查
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-16 DOI: 10.1016/j.rser.2024.114964
Tong Zhang , Meysam Qadrdan , Jianzhong Wu , Benoit Couraud , Martin Stringer , Sara Walker , Adam Hawkes , Adib Allahham , David Flynn , Danny Pudjianto , Paul Dodds , Goran Strbac
{"title":"A systematic review of modelling methods for studying the integration of hydrogen into energy systems","authors":"Tong Zhang ,&nbsp;Meysam Qadrdan ,&nbsp;Jianzhong Wu ,&nbsp;Benoit Couraud ,&nbsp;Martin Stringer ,&nbsp;Sara Walker ,&nbsp;Adam Hawkes ,&nbsp;Adib Allahham ,&nbsp;David Flynn ,&nbsp;Danny Pudjianto ,&nbsp;Paul Dodds ,&nbsp;Goran Strbac","doi":"10.1016/j.rser.2024.114964","DOIUrl":"10.1016/j.rser.2024.114964","url":null,"abstract":"<div><div>Hydrogen could be generated, stored, transported, and consumed in various ways, making it a promising solution to carbon emission reduction. However, key questions still remain in how hydrogen could be appropriately integrated into energy systems over time while coupling with different sectors. This has led to model-based studies of the whole system value of hydrogen in future energy systems, and the near-term actions and long-term strategies required to facilitate the transition to low-carbon energy systems with hydrogen. In this paper, a systematic review of the existing model-based studies in this area was conducted. A summary of hydrogen applications in energy systems was made, with statistics of publications and projects revealing the fast-growing interest in hydrogen in the past several years. The modelling methods used to investigate the system integration of hydrogen was summarised from over 130 publications. This paper also identified the gaps in modelling capability and potential future research topics: 1) balance between the resolution and modelling complexity, 2) inclusion of all uncertain factors of hydrogen pathways, 3) advancement of modelling approaches to address the chicken-and-egg dilemma of hydrogen economy development, and 4) a more detailed and comprehensive coverage of various interactions between hydrogen and other sectors.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Zone-based many-objective building decarbonization considering outdoor temperature and occupation uncertainty 考虑室外温度和占用率的不确定性,基于分区的多目标建筑脱碳技术
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-16 DOI: 10.1016/j.rser.2024.115003
Limao Zhang , Chao Chen , Cheng Zhou , Yongqiang Luo , Xiaoying Wu
{"title":"Zone-based many-objective building decarbonization considering outdoor temperature and occupation uncertainty","authors":"Limao Zhang ,&nbsp;Chao Chen ,&nbsp;Cheng Zhou ,&nbsp;Yongqiang Luo ,&nbsp;Xiaoying Wu","doi":"10.1016/j.rser.2024.115003","DOIUrl":"10.1016/j.rser.2024.115003","url":null,"abstract":"<div><div>Operational building decarbonization is challenging due to complex weather conditions and occupation uncertainty. This paper introduces a precise optimization framework integrating the building information modelling technique and intelligent algorithms to dynamically predict multi-scenario building carbon emissions and optimize the building emissions performance considering building zones and weather conditions. Firstly, the on-site data and building information modeling-supported building emissions simulation data are collected for model training. Secondly, using intelligent algorithms, zone-based hourly carbon emissions and multi-scenario carbon emissions prediction are conducted simultaneously. Thirdly, the optimal decarbonization strategies are conducted using intelligent algorithms under various weather conditions. This framework has been verified for decarbonization in a high-rise operational building. The results reveal that: (1) The carbon emissions prediction is highly consistent with the ground truth after considering the sub-zone correlations; the R<sup>2</sup> for the west, south, and east zones are 0.900, 0.900, and 0.942, respectively; (2) The surrogate models can accurately predict carbon emissions and thermal comforts with all R<sup>2</sup> are higher than 0.912. The optimization rate of the building reaches 59.2 % while the outdoor temperature is above 35 °C. (3) In the many-objective optimization model, considering occupation uncertainty makes the strategy close to the actual situation, reaching the decarbonization by 6815.23 kg compared to the empirical operation for the cooling period. This work provides a new path for operational building precise management and control-oriented optimization decarbonization.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Heating and cooling geothermal systems in urban settings: The potential of energy micropiles 城市环境中的供暖和制冷地热系统:能源微桩的潜力
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-16 DOI: 10.1016/j.rser.2024.114966
Yozy Kepdib M.F , Singh R.M , Madiai C , Facciorusso J.A
{"title":"Heating and cooling geothermal systems in urban settings: The potential of energy micropiles","authors":"Yozy Kepdib M.F ,&nbsp;Singh R.M ,&nbsp;Madiai C ,&nbsp;Facciorusso J.A","doi":"10.1016/j.rser.2024.114966","DOIUrl":"10.1016/j.rser.2024.114966","url":null,"abstract":"<div><div>Since the 1980s, the utilization of geostructures for heating and cooling buildings has evolved significantly, initially with base slabs and later expanding to include various structures like piles, retaining walls, and tunnels, collectively termed as energy geostructures. These systems facilitate heat exchange between the ground and buildings by circulating a heat exchange fluid through plastic pipes embedded within the geostructures. In the realm of structural rehabilitation and retrofitting, micropiles have gained preference over traditional piles due to their smaller installation equipment, reduced noise, and limited vibration, making them an attractive option, particularly in densely populated urban areas. However, despite the potential of energy micropiles (EMPs), they have received little attention compared to energy piles. This study conducts a comprehensive review on geothermal energy and EMPs, highlighting their potential in heating and cooling structures in urban areas. Their long-term heat exchange rates, typically ranging from 30 to 50 W/m, are influenced by factors such as pipe configuration, pipe diameter, fluid flow rate, soil thermal conductivity, groundwater presence, temperature differentials, and seasonal variations. The small dimensions of micropiles may lead to increased thermal resistance due to interference between U- shape pipes, while group installations can reduce individual micropile thermal efficiency. Moreover, significant thermal stresses are induced, and they increase with cycles. Optimal performance is achievable with corrugated pipes, a coaxial pipe configuration and intermittent operation. This study highlights the need for continued innovation and partnership to advance the adoption of EMPs, thereby enhancing energy efficiency, climate resilience, and environmental sustainability.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photovoltaics and green roofs: Holistic analysis in built environments 光伏和绿色屋顶:建筑环境的整体分析
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-15 DOI: 10.1016/j.rser.2024.114987
Laura Jo Houchmand, Marcel Macarulla Martí, Santiago Gassó-Domingo
{"title":"Photovoltaics and green roofs: Holistic analysis in built environments","authors":"Laura Jo Houchmand,&nbsp;Marcel Macarulla Martí,&nbsp;Santiago Gassó-Domingo","doi":"10.1016/j.rser.2024.114987","DOIUrl":"10.1016/j.rser.2024.114987","url":null,"abstract":"<div><div>The European Union has emphasized policies promoting photovoltaic (PV) energy generation to achieve the United Nations' Sustainable Development Goals 7 and 13. Notably, building roofs suitable for PV panels also present opportunities for passive energy-saving methods, such as green roofs. Both approaches impact beyond buildings to the urban level; PV panels intensify the urban heat island (UHI) effect, while well-irrigated green roofs mitigate it. In the Mediterranean region, where cities face challenges from extreme weather events and droughts leading to water restrictions, a comprehensive analysis of the influence of these approaches at both the building and urban levels becomes crucial. This work addresses this gap by employing dynamic simulations of a typical Mediterranean roof, an extensive green roof and a summer-irrigated green roof, all with and without PV panels, under Mediterranean climate. While both green roofs and PV systems prove beneficial at the building level, only irrigated green roofs effectively reduce the UHI impact. Unirrigated green roofs show no benefit on the UHI, whereas PV panels consistently amplify it. Combining an unirrigated green roof with PV panels has the highest UHI impact among all analyzed roof types. Summer irrigation of the extensive green roof can compensate the additional convective heat flux by PV panels, and moreover enhancing heat loss through the roof—a beneficial aspect at the building level during summer. The findings underscore the complexity of defining strategies that meet goals for renewable energy and UHI mitigation, highlighting the need for further research in this area.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Methodological approaches for resource recovery from end-of-life panels of different generations of photovoltaic technologies – A review 从不同代光伏技术的报废电池板中回收资源的方法 - 综述
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-15 DOI: 10.1016/j.rser.2024.114980
Nehemiah Mukwevho , Andile Mkhohlakali , Napo Ntsasa , James Sehata , Luke Chimuka , James Tshilongo , Mokgehle R. Letsoalo
{"title":"Methodological approaches for resource recovery from end-of-life panels of different generations of photovoltaic technologies – A review","authors":"Nehemiah Mukwevho ,&nbsp;Andile Mkhohlakali ,&nbsp;Napo Ntsasa ,&nbsp;James Sehata ,&nbsp;Luke Chimuka ,&nbsp;James Tshilongo ,&nbsp;Mokgehle R. Letsoalo","doi":"10.1016/j.rser.2024.114980","DOIUrl":"10.1016/j.rser.2024.114980","url":null,"abstract":"<div><div>The rise in prominence of solar energy as a green technology demanded economical and sustainable waste management due to the anticipated surge of end-of-life panel waste streams. While there are many advantages to the increase in solar power output, end-of-life solar panels could become a source of hazardous waste. Therefore, the disposal of photovoltaic panels will become a major environmental concern in the next decades. Generations of photovoltaic technologies, namely crystalline silicon, thin-film, and third-generation solar panels, share the goal of achieving waste reduction through useful strategies for recovery of secondary raw materials from obsolete panels. This research reviews the current status and future prospects for valuable constituents, waste projections, and trends in technological advances for recycling and recovery of resource materials from different generations of photovoltaic solar systems. Projections of global photovoltaic waste driven by the expansion of solar system installations illuminate the influx of waste streams that burden the environment if there are no measures in place for sustainable waste management. The crystalline silicon and thin-film PV technologies have demonstrated sufficient advancements in resource recovery technologies for industrial use in circular economy and closed-loop recycling to minimize environmental impacts and prevent leaching of toxic elements. Industrial application of pyrolysis and chemical etching has emerged as a promising approach to recovery of high-purity secondary valuable materials from obsolete c-Si panels. Substantial recoveries of critical from obsolete thin-film panels are notable with the application of mechanical and hydrometallurgical waste treatment techniques. Third-generation waste treatment methods are largely based on laboratory experiments because these solar systems are on the verge of commercialization.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
LCA-based carbon footprint analysis of anaerobic digestion of coffee husk waste 基于生命周期评估的咖啡渣厌氧消化碳足迹分析
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-15 DOI: 10.1016/j.rser.2024.114993
Matheus Augusto de Oliveira Fernandes , Bruno Eduardo Lobo Baêta , Oscar Fernando Herrera Adarme , Alberto Fonseca
{"title":"LCA-based carbon footprint analysis of anaerobic digestion of coffee husk waste","authors":"Matheus Augusto de Oliveira Fernandes ,&nbsp;Bruno Eduardo Lobo Baêta ,&nbsp;Oscar Fernando Herrera Adarme ,&nbsp;Alberto Fonseca","doi":"10.1016/j.rser.2024.114993","DOIUrl":"10.1016/j.rser.2024.114993","url":null,"abstract":"<div><div>While studies have shown that anaerobic digestion (AD) with energy generation of agricultural residues have many benefits, it is still unclear the extent to which this technology can reduce greenhouse gas (GHG) emissions, particularly in the context of coffee husk wastes. To address this knowledge gap, this work explored three scenarios of coffee husks as an energy source: 0) business-as-usual (landfilling); 1) AD with energy generation; 2) same as the previous one, adding a hydrothermal hydrolysis pre-treatment step. The study adopted a Life Cycle Assessment (LCA) methodology to estimate the environmental impacts of this technology in terms of GHG emissions. The results indicate that the main benefit of using AD is to avoid the impacts of landfilling, as the carbon footprint for the landfilling scenario was more than 13 times higher than the others. The emissions from digestate management were the main source of the overall emissions, accounting for 34 %. However, its use to replace chemical fertilizers affected the environmental performance positively. The inclusion of the pre-treatment was a key factor in making the bioenergy from coffee husks less carbon-intensive than natural gas and oil, although common renewable sources such as wind and hydropower tend to have lower GHG emissions. Sensitivity analyses indicate that this type of bioenergy can mitigate GHG emissions from energy generation in coffee-producing countries with fossil-based energy mixes. Overall, this work fills a knowledge gap by providing empirical evidence to the potential benefits of using coffee husks in the world's transition to a low-carbon economy.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of biomass-mediated hierarchical Zeolite socony Mobil–5 and their selectivity for lignin conversion to bio-oils: Review and perspective 生物质介导的分层沸石聚合体 Mobil-5 的合成及其将木质素转化为生物油的选择性:回顾与展望
IF 16.3 1区 工程技术
Renewable and Sustainable Energy Reviews Pub Date : 2024-10-15 DOI: 10.1016/j.rser.2024.114977
Ruijin Li , Danlian Huang , Zhen Wei , Yashi Chen , Guangfu Wang , Wei Zhou , Ruihao Xiao , Wenbo Xu
{"title":"Synthesis of biomass-mediated hierarchical Zeolite socony Mobil–5 and their selectivity for lignin conversion to bio-oils: Review and perspective","authors":"Ruijin Li ,&nbsp;Danlian Huang ,&nbsp;Zhen Wei ,&nbsp;Yashi Chen ,&nbsp;Guangfu Wang ,&nbsp;Wei Zhou ,&nbsp;Ruihao Xiao ,&nbsp;Wenbo Xu","doi":"10.1016/j.rser.2024.114977","DOIUrl":"10.1016/j.rser.2024.114977","url":null,"abstract":"<div><div>Conversion of lignin biomass to bio-oil is currently a very industrially attractive strategy due to energy shortages and resource scarcity. Combining the advantages of mesoporous structure and strong acidity, hierarchical zeolites are considered the promising catalytic materials that have attracted great attention in the field of crude oil cracking. This work reviewed the effect of biomass-derived compounds as templates on the pore structure and acidity of the molecular sieves, and evaluated the bio-oil quality of these biomass-mediated hierarchical molecular sieves acting on lignin or lignin derivatives and their selectivity. The morphology, particle size, and properties of biomass templates are intimately tied to the secondary porosity of hierarchical zeolites, enabling the creation of unprecedented structural features and properties within the hierarchical zeolite. The resulting hierarchical zeolite exhibits exceptional crystallinity and superior mesoporous connectivity. In addition, hierarchical zeolites synthesized from biomass templates are competitive in improving the catalytic performance of lignin degradation. When the acid content is high enough, the mesopore content and pore size become key parameters in determining the catalytic efficiency to selectively improve the bio-oil quality of lignin and its derivatives. Finally, a systematic and comprehensive outlook on the opportunities and challenges of biomass-mediated hierarchical zeolites in the synthesis and conversion of lignin to bio-oil was presented from several perspectives. This review intends to provide theoretical guidance for green synthesis of hierarchical zeolites and to propose a feasible strategy for the conversion of lignin into bio-oil.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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