Global Change Biology Bioenergy最新文献

{"title":"Correction to “Carbon Stocks in Sugarcane Biomass and Their Implications on Land Use Change CO2 Balance in Brazil”","authors":"","doi":"10.1111/gcbb.70171","DOIUrl":"https://doi.org/10.1111/gcbb.70171","url":null,"abstract":"<p>\u0000 <span>Hernandes, T. A. D.</span>, <span>N. P. Ramos</span>, <span>S. F. Nogueira</span>, et al. <span>2026</span>. “ <span>Carbon Stocks in Sugarcane Biomass and Their Implications on Land Use Change CO<sub>2</sub> Balance in Brazil</span>.” <i>GCB Bioenergy</i> <span>18</span>, no. <span>8</span>: e70160. https://doi.org/10.1111/gcbb.70160.\u0000 </p><p>There are several typesetting errors in 'Carbon Stocks in Sugarcane Biomass and Their Implications on Land Use Change CO<sub>2</sub> Balance in Brazil,' where percentage symbols (%) were incorrectly appended to several absolute baseline values throughout the text.</p><p>The correct values and updated text appear below.</p><p>\u0000 <b>Abstract</b>\u0000 </p><p>Bioenergy represents a promising solution for mitigating climate change with sugarcane representing the most important feedstock in Brazil. However, its cultivation has raised concerns regarding direct land use change (DLUC), from which greenhouse gas (GHG) emissions can significantly alter its potential as a renewable energy source. Given its relevance for Brazil's energy transition strategy, this study aimed to derive more representative and regionalized estimates of carbon stocks in sugarcane biomass in Brazil. Impacts on carbon balance from DLUC associated with sugarcane cultivation over a 20-year period were evaluated. An extensive literature review was conducted to compile a dataset of sugarcane biomass parameters that compose the carbon pools and represent Brazil's current sugarcane production system. The main outcome is a sugarcane biomass' carbon factor (CF<sub>SUG</sub>) of 0.133 (±3.8%). It enables flexible and straightforward estimation of sugarcane carbon stock by multiplying by yield, that captures spatial and temporal variability. Using a 10-year average yield, the mean biomass carbon stock is <b>9.9 ± 4.1%</b> MgC.ha<sup>−1</sup> at national-level, over 100% higher and more accurate than IPCC's <b>4.7 ± 75%</b>. The DLUC CO<sub>2</sub> balance associated with sugarcane for 2000–2019 was negative, indicating net carbon removal, with an average of −4.8 TgCO<sub>2</sub>.year<sup>−1</sup> (−9.1 to −0.5). The proposed CF<sub>SUG</sub> led to carbon removal in 62% of the sugarcane-producing municipalities, compared to 37% in previous studies that used standard values. The use of CF<sub>SUG</sub> in DLUC CO<sub>2</sub> balance is recommended since they are more precise and representative of Brazilian conditions and can support more well informed GHG inventories and bioenergy policies worldwide.</p><p>\u0000 <b>Results</b>\u0000 </p><p>\u0000 <i>3.1, last paragraph</i>\u0000 </p><p>The AGB from the dataset, which is the sum of stalks, dead leaves and tops, achieved <b>37.4 ± 4.1%</b> Mg.ha<sup>−1</sup>. BGB, corresponding to roots and rhizomes, presented a mean value of <b>6.8 ± 7.6%</b> Mg.ha<sup>−1</sup>. Finally, the mean value of DOM, corresponding to the total sugar","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 9","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70171","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of Pasture Conversion to Sugarcane on Water Fluxes and Water Use Efficiency in the Southeastern US","authors":"Sneha Bandyopadhyay,&nbsp;Elena Blanc-Betes,&nbsp;Cole Walton,&nbsp;Tess Rutstein,&nbsp;Carl J. Bernacchi,&nbsp;Evan H. DeLucia,&nbsp;Elizabeth H. Boughton,&nbsp;Amartya Saha,&nbsp;Wendy H. Yang,&nbsp;Caitlin E. Moore,&nbsp;Nuria Gomez-Casanovas","doi":"10.1111/gcbb.70166","DOIUrl":"https://doi.org/10.1111/gcbb.70166","url":null,"abstract":"<p>The expansion of sugarcane (cane), a high-yielding perennial crop, will likely reshape the bioenergy landscape in the Southeastern US. However, its ecohydrological implications, particularly following conversion from grazed pastures, a dominant land use in the region, remain highly uncertain. We investigated the impact of cane expansion on evapotranspiration (ET) and its partitioning, and the mechanisms influencing both ET components and water use efficiency (WUE) across multiple scales and growth cycles in subtropical Florida. We combined eddy covariance, biometric measurements, and process-based stomatal conductance (<i>g</i>_<i>s</i>) models. ET was 1.7% lower in cane than in improved pasture (IMP) but exceeded that in semi-native pasture (SN) by 21%. Transpiration (T) followed a similar pattern, consistent with lower <i>g</i>_<i>s</i> in cane relative to IMP. Cane had more conservative water use and greater sensitivity of <i>g</i>_<i>s</i> to vapor pressure deficit (VPD) compared to IMP pasture, suggesting cane may be more tolerant of increasing atmospheric water demand. In contrast, SN showed lower <i>g</i>_<i>s</i> and weaker stomatal sensitivity to VPD compared to cane, resulting in lower T. In cane, stomatal regulation and T varied across growth cycles, with stomata becoming less water conservative as stands matured, highlighting the importance of incorporating stand age-dependent stomatal regulation into hydrological models. Evaporation (E) was higher in cane than pastures (19%–26%), partially offsetting WUE gains. Cane exhibited higher intrinsic WUE (GPP/<i>g</i>_<i>s</i>; Gross Primary Productivity), ecosystem WUE (GPP/ET), and harvest WUE (harvest/ET) than both pasture types. Large-scale pasture-to-cane conversion could produce widely contrasting hydrological outcomes. The net regional impact will depend on the proportion of each pasture type converted and on cane's high <i>g</i>_<i>s</i> sensitivity to VPD, which triggers tight stomatal regulation and conservative water use, both of which will become increasingly consequential under intensifying atmospheric water demand.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 9","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70166","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Miscanthus Leaf Drop Timing Impacts Autumn and Winter Soil Decomposition Rates","authors":"Amanda J. Holder,&nbsp;Karen Askew,&nbsp;Iain Donnison,&nbsp;Paul Robson","doi":"10.1111/gcbb.70170","DOIUrl":"https://doi.org/10.1111/gcbb.70170","url":null,"abstract":"<p>Dedicated biomass crops are widely accepted as an important part of decarbonising economies by producing scalable sources of biomass for energy and renewable bioproducts. <i>Miscanthus</i> is a leading dedicated biomass crop embodying many co-benefits including soil carbon sequestration. Contributions to carbon balances generally include both high yield (fixed carbon) and ways to limit carbon loss from soils or sequester carbon to soils. <i>Miscanthus</i> inputs carbon to soils via roots, rhizome and leaf litter and one benefit of perenniality is that soil carbon is not disturbed by regular tillage and will potentially accumulate for many years. Variation in over-winter leaf senescence is highly heritable and leaf litter is relatively easy to assess compared to other tissues contributing to soil carbon that are belowground, making leaf drop an attractive target for breeding. We used data on the genotypic variation in leaf drop in <i>Miscanthus</i> genotypes to simulate different leaf drop profiles. We then used a technique known as the tea bag index to estimate the impacts the identified variation in leaf drop dynamics had on soil decomposition with and without additional nitrogen. The timing of leaf litter treatment had a significant effect on the teabag decomposition rate in the absence of additional nitrogen with treatments in which leaf drop occurred largely over shorter periods resulting in lower decomposition rates. A higher rate often signifies undesirable consequences in that higher CO₂ emissions occur from the soil. A standard <i>M × giganteus</i> leaf drop profile, a consistent input treatment where the same amount of leaf is applied throughout and control (no litter) all gave worse outcomes. We therefore suggest that leaf drop as a target for breeding can be beneficial for soil carbon sequestration and that under the wet temperate conditions experienced over two years, concentrated leaf drop during winter is the preferable ideotype.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 9","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Applying Biochar With Fertilisers Decreases Nitrogen and Phosphorus Leaching and Improves Phosphorus Availability: A Meta-Analysis","authors":"Lakmini Dissanayake,&nbsp;Negar Omidvar,&nbsp;Michael B. Farrar,&nbsp;Stephen Joseph,&nbsp;Lei Guo,&nbsp;Frédérique Reverchon,&nbsp;Marta Gallart,&nbsp;Edith Kichamu-Wachira,&nbsp;Bushra Muqaddas,&nbsp;Shahla Hosseini Bai","doi":"10.1111/gcbb.70165","DOIUrl":"https://doi.org/10.1111/gcbb.70165","url":null,"abstract":"<p>Nitrogen (N) and phosphorus (P) are two of the most essential nutrients for plants, but overapplication of N and P to cropping systems can lead to eutrophication and groundwater contamination through leaching. Biochar has been used to improve N and P use efficiency, reducing leaching, and the effects of biochar on N and P leaching and availability have been widely studied. Biochar is often applied with fertilisers; however, combined effects of biochar with fertilisers on N and P leaching and availability have not been adequately addressed. This meta-analysis synthesised 1798 data points from 48 peer-reviewed articles to evaluate the effects of applying biochar with fertilisers on N and P leaching and availability. Our results showed that applying biochar with fertilisers decreased NO₃⁻, NH₄⁺ and P (as PO₄³⁻) leaching by 13.2% ± 0.1%, 1.5% ± 0.1% and 16.5% ± 0.7%, respectively (Bootstrap 95% CI). Method of biochar application emerged as the primary factor affecting N and P leaching. For NO₃⁻ leaching, time after biochar application was the next most important predictor, whereas NH₄⁺ leaching was predicted by the rate of biochar application and soil organic C concentration. P leaching was moderated by the feedstock type and pyrolysis temperature used to make biochars. Applying biochar with fertilisers did not affect NH₄⁺ and NO₃⁻ availability but increased P availability by 21.9% ± 0.5%. This study provides strong empirical evidence that co-applying biochar with fertilisers is an effective management practice that can reduce nutrient leaching and minimise environmental impacts of cropping systems.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 9","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70165","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights Into Soil Health in Sugarcane From a Bibliometric Analysis: Brazil's Scientific Contribution to the World","authors":"Lucas Jónatan Rodrigues da Silva,&nbsp;Miriam Büchler Tarumoto,&nbsp;Oziel Cereja Neves,&nbsp;Lilybeth Namie Tomita,&nbsp;Douglas Gonçalves Saraiva,&nbsp;Dirceu de Mattos Junior,&nbsp;Claudia Barros Monteiro-Vitorello,&nbsp;Márcio R. Nunes,&nbsp;João de Andrade Bonetti,&nbsp;Carlos Alexandre Costa Crusciol","doi":"10.1111/gcbb.70144","DOIUrl":"https://doi.org/10.1111/gcbb.70144","url":null,"abstract":"<p>Understanding how sugarcane-based production systems influence soil health is essential for advancing sustainable bioenergy pathways in tropical regions. We conducted a comprehensive bibliometric and systematic analysis of peer-reviewed literature published between 2000 and 2025 to evaluate scientific advances, research trends, and knowledge gaps related to carbon, chemical, physical, and biological indicators in Brazilian sugarcane fields. A total of 393 articles were screened from Scopus and Web of Science using the PRISMA protocol, resulting in 98 carbon, 68 chemical, 148 physical, and 79 biological studies. Bibliometric analyses were performed in R, Gephi, and SigmaPlot, while spatial patterns were assessed using QGIS. Publication and citation trends showed a marked increase after 2010, coinciding with the expansion of mechanized harvesting, elimination of straw burning, and strengthened climate and bioenergy policies. Keyword co-occurrence revealed “soil compaction” and “soil organic matter” as central research axes, reflecting concerns associated with mechanized traffic, carbon cycling, and long-term soil degradation. Across all article groups, chemical and physical indicators were the most frequently assessed, whereas biological attributes remained consistently underrepresented. NPK, SOM/SOC, bulk density, and soil porosity were the most common analyzed variables, while microbial biomass and enzyme activity dominated the limited set of biological assessments. Spatial analyses showed a strong geographical concentration of studies in São Paulo State, indicating major regional research asymmetries. Overall, our findings highlight substantial scientific progress in soil health research within Brazilian sugarcane systems but also reveal persistent gaps, especially in biological indicators and integrative, multi-attribute approaches.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 9","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70144","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148617071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Established Short-Rotation Willow (Salix spp.) as an Effective Facilitator of Native Hardwood Tree Regeneration in New York State, USA","authors":"Mark H. Eisenbies,&nbsp;Timothy A. Volk,&nbsp;Karl W. Hallen,&nbsp;Martin Dovciak,&nbsp;Jacob Whittaker,&nbsp;Andrew Vander Yacht","doi":"10.1111/gcbb.70163","DOIUrl":"https://doi.org/10.1111/gcbb.70163","url":null,"abstract":"<p>Afforestation of former agricultural land is increasingly prioritized as a natural climate solution, yet tree establishment is inhibited by herbaceous competition, browsing pressure, limited seed dispersal, and planting costs. Short-rotation willow (<i>Salix</i> spp.) crops could provide renewable biomass for multiple rotations and subsequently transition to forest by facilitating hardwood establishment through rapid canopy closure, suppression of competing vegetation, and improvement of site conditions. This potential, hardwood regeneration within nine willow fields in New York State was assessed using two sequential studies. In study 1, a rapid point-quarter survey quantified seedling density, height, and spatial gradients relative to seed sources. In a follow-up study, fixed-area plots were established across these gradients to quantify seedling densities and evaluate stand, soil, and seed-source proximity attributes. Hardwood regeneration was dominated by wind-disseminated species, primarily <i>Fraxinus</i> and <i>Acer</i> spp., with mean densities reaching 30,000 seedlings ha⁻¹ in some locations. Regeneration was spatially structured, declining with increasing distance from seed sources; densities typically fell below 2500 seedlings ha⁻¹ beyond 40–75 m from forest edges. The point-quarter method underestimated fixed-plot densities but reliably distinguished areas of high and low regeneration. Logistic regression indicated that regeneration exceeding thresholds associated with successful forest establishment (1500 and 2500 seedlings ha⁻¹) was positively related to proximity to seed sources and higher willow survival, whereas other soil and stand properties were not associated with seedling density. These findings suggest that short-rotation willow systems could function as a hardwood nurse crop and integrate biomass production with afforestation.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Miscanthus giganteus Biolistic Transformation Using the Visible RUBY Red Marker Gene to Monitor Transformation Efficiency","authors":"Balasubramaniam Muthukumar,&nbsp;Lynn Doran,&nbsp;Benjamin Haas,&nbsp;Karolina Sobańska,&nbsp;Michelle Szul,&nbsp;Amit Kumar,&nbsp;Cameron Kern,&nbsp;Donald R. Ort,&nbsp;Stephen P. Long","doi":"10.1111/gcbb.70161","DOIUrl":"https://doi.org/10.1111/gcbb.70161","url":null,"abstract":"<p><i>Miscanthus × giganteus</i> (<i>M×g</i>) is a high-yielding perennial C4 bioenergy crop, but genetic improvement by breeding is constrained by triploid sterility and clonal propagation. Improving genetic transformation methods for <i>M×g</i> would provide opportunities for advantageous trait introgression. Use of an easy to phenotype reporter gene is a promising strategy to improve transformation processes and efficiency. This study presents an efficient novel method for biolistic transformation of inflorescence-derived callus in <i>M×g</i> and demonstrates its efficacy using RUBY, a betalain-based noninvasive reporter that is visible throughout the transformation process. RUBY expression (<i>Zea mays</i> codon optimized) was visible from callus stage through plantlet development into maturity. RUBY expressing independently transformed plants were confirmed by hygromycin phosphotransferase ELISA and by genomic PCR demonstrating that the RUBY phenotype is sufficient for screening transformants. The <i>Zea mays</i> codon optimized hygromycin selection marker was driven by previously established promoters for Miscanthus, ZmUBI and 2×35S, while the RUBY gene expression was controlled by a known <i>Zea mays</i> C4 promoter, <i>Brachypodium</i> UBI10, newly employed in Miscanthus. The construct containing the 2×35S promoter for hygromycin had a 15.1% transformation efficiency while the ZmUBI promoter had a 20.5% transformation efficiency. This study provides a novel, highly efficient protocol for successful biolistic transformation of <i>M×g</i> for stable expression. This study also demonstrates that RUBY expression can be used as a convenient and powerful monitor of transformation in ongoing and future work to engineer <i>M×g</i> into an improved bioproduct feedstock.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Climate Change on the Potential Distribution of Macaúba (Acrocomia aculeata, Acrocomia totai, Acrocomia intumescens) in Brazil","authors":"George Corrêa Amaro,&nbsp;Vanessa Gonçalves do Nascimento,&nbsp;Anderson Barbosa Evaristo,&nbsp;Santiago José Elías Velazco,&nbsp;Ricardo Siqueira da Silva,&nbsp;Niloufar Lorestani,&nbsp;Farzin Shabani","doi":"10.1111/gcbb.70152","DOIUrl":"https://doi.org/10.1111/gcbb.70152","url":null,"abstract":"<p>Understanding how climate change may alter species distributions is important for conservation planning and the sustainable expansion of bioenergy crops. Macaúba palms (<i>Acrocomia aculeata</i>, <i>A. totai</i>, and <i>A. intumescens</i>) are promising nonedible oilseed resources in Brazil, yet their future environmental suitability remains poorly quantified. Here, we developed a standardized ensemble modeling framework integrating biologically informed calibration areas, spatial block cross-validation, and multistage covariate selection to evaluate climate-driven shifts in the potential distribution of the three species. A key methodological feature was the generation of bioclimatic layers aligned with temporally explicit 20-year historical windows matching occurrence records, reducing temporal mismatch between climate and biodiversity data. Models were built using climatic, edaphic, and elevation predictors, and future projections incorporated six CMIP6 global climate models under SSP2-4.5, SSP3-7.0, and SSP5-8.5 for mid- and late-century scenarios. All species achieved high predictive performance but differed markedly in their environmental responses and projected dynamics. Sensitivity analyses based on repeated random reductions of occurrence records showed limited variation in model performance metrics, indicating that ensemble projections were relatively insensitive to moderate occurrence-data uncertainty. <i>Acrocomia aculeata</i> exhibited broad climatic and edaphic tolerance, resulting in relative stability and moderate redistribution among suitability classes. <i>Acrocomia totai</i> showed consistent gains in climatically suitable areas under future scenarios, suggesting potential expansion of environmentally compatible conditions. In contrast, <i>Acrocomia intumescens</i>, characterized by narrower environmental requirements, emerged as the most vulnerable species, with consistent losses in high and very high suitability areas, particularly under late-century high-emission scenarios. Together, these findings reveal contrasting climate change responses within <i>Acrocomia</i>, ranging from relative resilience to marked vulnerability, with direct implications for conservation, agricultural zoning, and climate adaptation strategies. Results also support <i>A. aculeata</i> as one of the most promising species for sustainable bioenergy production in Brazil.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards Sustainable Waste Valorization: A Techno-Economic Analysis and Life Cycle Assessment for HMF Production From Potato Residues Based on Process Simulation","authors":"Maximilian Bolz,&nbsp;Kanakasree Shivaprasad,&nbsp;Philipp Konnerth,&nbsp;Leiddi Laura Maria Leal,&nbsp;Jan Weik,&nbsp;Andrea Kruse","doi":"10.1111/gcbb.70162","DOIUrl":"https://doi.org/10.1111/gcbb.70162","url":null,"abstract":"<p>The transition toward a circular bioeconomy requires sustainable alternatives to fossil-based platform chemicals. This study investigates the techno-economic and environmental feasibility of producing 5-hydroxymethylfurfural (HMF) from potato residues, an abundant agro-industrial waste in Germany. Using Aspen Plus software (V14), a process simulation was developed for two biorefinery Scales: a small on-farm biorefinery (100 kg/h feedstock) and a larger urban plant (2000 kg/h). Both concepts were evaluated through techno-economic analysis (TEA) and life cycle assessment (LCA) following ISO 14040/44 standards. The results indicate that scaling up production reduces the minimum selling price (MSP) of HMF from 22.91 €/kg to 4.86 €/kg due to significant economies of scale. Energy demand was identified as the dominant cost driver, particularly during hydrolysis, dehydration, and purification. The assessment of a numbering-up strategy indicates that process learning effects and increasing automation have the potential to further reduce the MSP, thereby enhancing the overall economic viability of HMF production. LCA results (ReCiPe 2016 method) showed that climate impacts decrease from 2.7 kg CO₂eq/kg HMF at Scale 1 to 2.6 kg CO₂eq/kg HMF at Scale 20. Major environmental hotspots included ethanol production and incineration, sulfuric acid use, and sodium hydroxide production. The study shows that potato residues offer a viable, low-cost feedstock for HMF production, supporting waste valorization and sustainable platform chemical manufacturing. However, pilot-scale validation is required to confirm process robustness and marketability.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic Hydropyrolysis of Beetle Killed Trees for the Production of Transportation Biofuels","authors":"Oluwanisola Makinde,&nbsp;Fernando Resende,&nbsp;Micheal Asama,&nbsp;Demian F. Gomez","doi":"10.1111/gcbb.70158","DOIUrl":"https://doi.org/10.1111/gcbb.70158","url":null,"abstract":"<p>We conducted catalytic hydropyrolysis of beetle-killed trees: Pine, Ash tree, and Redbay in a micro-pyrolyzer (Py/GC–MS) and investigated the performance of heterogeneous catalysts like HZSM-5, NiMo-HZSM-5, and NiRe-HZSM-5. We also investigated the effects of temperature, catalyst-to-biomass ratio, and hydrogen pressure on product yield. Our findings reveal that aromatic yields increase with temperature and catalyst-to-biomass ratio but decline at higher hydrogen pressures; additionally, higher catalyst acidity enhances both total hydrocarbon production and selectivity toward C7–C8 aromatics, with each feedstock exhibiting distinct optimal conditions. The type of metal doped on the HZSM-5 zeolite plays an important role in the process. Under the tested conditions (500°C, 21 bar, and catalyst-to-biomass ratio 10:1), Molybdenum (Mo) outperformed Rhenium (Re) for promoting alkane formation. The NiRe-HZSM-5 catalyst produced only a modest yield of alkanes (0.7 wt.%) compared to the higher yield (10.0 wt.%) observed with NiMo-HZSM-5. Overall, NiMo-HZSM-5 was the optimum catalyst for the production of alkanes. HZSM-5 is the optimum catalyst for the production of aromatic hydrocarbons. To optimize the operating parameters and enhance aromatic yield, we employed a response surface methodology (RSM). The analysis revealed that the maximum product yield of 35.0% is obtained at 570°C, 14 bar, and catalyst-to-biomass ratio of 14:1. The highest aromatic yield of 28.3% is obtained at 562°C, 14 bar, and catalyst-to-biomass ratio of 13:1. The highest alkane yield is 5.7%, obtained at 400°C, 14 bar, and catalyst-to-biomass ratio of 8.6:1.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 8","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70158","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}