Pub Date : 2026-01-05DOI: 10.1016/j.biombioe.2025.108915
Yuanita Nanda Asfira , Holilah , Didik Prasetyoko , RH Fitri Faradilla , Asranudin , Agus Wedi Pratama , Zuratul Ain Abdul Hamid , Bambang Piluharto , Mohd Saiful Asmal Rani , Eka Putra Ramdhani , Lisman Suryanegara , Mohd Nor Faiz Norrrahim , Alvia Zahrotul Aini
Cellulose nanofibers (CNF) were isolated from a novel source, edamame husks (Glycine max L. Merrill), and their physicochemical properties were comprehensively characterized. Cellulose was initially extracted via alkali treatment and bleaching (Crystallinity Index 61.47 %) before being subjected to TEMPO-mediated oxidation to introduce carboxyl groups and facilitate nano-fibrillation. The resulting CNF exhibited a high aspect ratio with an average diameter of 4.936 nm (at 45 min oxidation). Fourier Transform Infrared (FTIR) spectroscopy confirmed the effective removal of non-cellulosic components, while X-ray diffraction (XRD) analysis revealed a decrease in crystallinity to 45.68 % following oxidation, indicating structural modification of the cellulose framework. Thermogravimetric analysis (TGA) showed a reduction in thermal stability for CNF compared to the original cellulose, consistent with the introduction of functional groups and reduced fiber dimensions. To demonstrate the utility of the CNF as a functional biomaterial, composite membranes were fabricated with natural rubber latex (NRL). This modification successfully shifted the surface properties from hydrophilic (Water Contact Angle 61.5°) to hydrophobic (Water Contact Angle 125.5°). This study elucidates the chemical and structural properties of CNF derived from edamame husks, highlighting its potential as a promising sustainable nanomaterial for advanced applications.
从毛豆壳(Glycine max L. Merrill)中分离得到纤维素纳米纤维(CNF),并对其理化性质进行了全面表征。首先通过碱处理和漂白提取纤维素(结晶度指数为61.47%),然后进行tempo介导的氧化以引入羧基并促进纳米纤颤。所得CNF具有较高的长径比,平均直径为4.936 nm(氧化45 min)。傅里叶变换红外光谱(FTIR)证实了非纤维素成分的有效去除,而x射线衍射(XRD)分析显示,氧化后纤维素的结晶度降至45.68%,表明纤维素框架的结构改性。热重分析(TGA)表明,与原始纤维素相比,CNF的热稳定性降低,这与引入官能团和减少纤维尺寸一致。为了证明CNF作为功能性生物材料的实用性,我们用天然胶乳(NRL)制作了复合膜。该修饰成功地将表面性质从亲水性(水接触角61.5°)转变为疏水性(水接触角125.5°)。这项研究阐明了从毛豆壳中提取的CNF的化学和结构特性,强调了它作为一种有前途的可持续纳米材料的潜力。
{"title":"Isolation and physicochemical characterization of TEMPO-oxidized cellulose nanofibers from edamame husk (Glycine max L. Merrill) and their use in composite membranes","authors":"Yuanita Nanda Asfira , Holilah , Didik Prasetyoko , RH Fitri Faradilla , Asranudin , Agus Wedi Pratama , Zuratul Ain Abdul Hamid , Bambang Piluharto , Mohd Saiful Asmal Rani , Eka Putra Ramdhani , Lisman Suryanegara , Mohd Nor Faiz Norrrahim , Alvia Zahrotul Aini","doi":"10.1016/j.biombioe.2025.108915","DOIUrl":"10.1016/j.biombioe.2025.108915","url":null,"abstract":"<div><div>Cellulose nanofibers (CNF) were isolated from a novel source, edamame husks (<em>Glycine max L. Merrill</em>), and their physicochemical properties were comprehensively characterized. Cellulose was initially extracted via alkali treatment and bleaching (Crystallinity Index 61.47 %) before being subjected to TEMPO-mediated oxidation to introduce carboxyl groups and facilitate nano-fibrillation. The resulting CNF exhibited a high aspect ratio with an average diameter of 4.936 nm (at 45 min oxidation). Fourier Transform Infrared (FTIR) spectroscopy confirmed the effective removal of non-cellulosic components, while X-ray diffraction (XRD) analysis revealed a decrease in crystallinity to 45.68 % following oxidation, indicating structural modification of the cellulose framework. Thermogravimetric analysis (TGA) showed a reduction in thermal stability for CNF compared to the original cellulose, consistent with the introduction of functional groups and reduced fiber dimensions. To demonstrate the utility of the CNF as a functional biomaterial, composite membranes were fabricated with natural rubber latex (NRL). This modification successfully shifted the surface properties from hydrophilic (Water Contact Angle 61.5°) to hydrophobic (Water Contact Angle 125.5°). This study elucidates the chemical and structural properties of CNF derived from edamame husks, highlighting its potential as a promising sustainable nanomaterial for advanced applications.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"209 ","pages":"Article 108915"},"PeriodicalIF":5.8,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-05DOI: 10.1016/j.biombioe.2025.108904
Antonio Conversano , Pietro Faccini , Senem Ozgen , Matteo Zatti , Federico Viganò
The paper presents a techno-economic analysis assessing two different configurations of a hydrothermal technology processing 10 kt/y of sewage sludge (23 %w solids) from municipal wastewater treatment as an alternative to their current fate mainly consisting in incineration or landfilling.
The process carries out a hydrothermal carbonization of sludges (210 °C, 34.5 bar, 35 min) producing hydrochar, and a liquid stream with lower organic content. Mass and energy balance closure and preliminary sizing have been performed in Matlab® environment, estimating capital and operating plant costs to calculate a levelized costs for sludge treatment.
Two process configurations have been assessed: Configuration A features a hydrothermal process treating the entire sewage sludge flowrate. In Configuration B, a split fraction of the sludge flow rate is sent to the hydrothermal process to produce the same amount of biochar for combustion as Configuration A, however the remaining sludge stream is sent to co-combustion reducing HTC wastewater recirculated to the water treatment plant. In both configurations A and B, HTC enables a reduction in primary energy consumption related to natural gas use, as well as lower fossil CO2 emissions compared to direct incineration (−68.3 % and −35.3 % respectively). The levelized cost of sludge treatment remains below 97.40 €/ton and can decrease to 48.37 €/ton in case of no disposal costs for excess biochar.
The work includes the design of a dedicated unit for off-gas treatment; moreover, both configurations have been assessed in terms of primary energy consumption and fossil CO2 emissions.
本文提出了一项技术经济分析,评估了水热技术的两种不同配置,该技术处理10 kt/年来自城市污水处理的污水污泥(23% w固体),作为其目前主要由焚烧或填埋组成的命运的替代方案。该工艺对污泥进行水热碳化(210°C, 34.5 bar, 35 min),产生碳氢化合物和有机含量较低的液体流。在Matlab®环境中进行了质量和能量平衡关闭和初步分级,估算了资本和运营工厂的成本,以计算污泥处理的平均成本。对两种工艺配置进行了评估:配置A采用水热工艺处理整个污水污泥流量。在配置B中,污泥流量的分馏部分被送至水热工艺,产生与配置a相同数量的生物炭用于燃烧,但剩余的污泥流被送至共燃烧,减少HTC废水再循环到水处理厂。在A和B两种配置中,HTC都可以减少与天然气使用相关的一次能源消耗,并且与直接焚烧相比,化石二氧化碳排放量分别降低了- 68.3%和- 35.3%。污泥处理的平准化成本保持在97.40€/吨以下,在没有多余生物炭处理成本的情况下,污泥处理的平准化成本可降至48.37€/吨。工作内容包括废气处理专用装置的设计;此外,还从一次能源消耗和化石二氧化碳排放的角度对这两种配置进行了评估。
{"title":"Partial vs total hydrothermal carbonization: process design, energy analysis and economic assessment for flexible sewage sludge treatment","authors":"Antonio Conversano , Pietro Faccini , Senem Ozgen , Matteo Zatti , Federico Viganò","doi":"10.1016/j.biombioe.2025.108904","DOIUrl":"10.1016/j.biombioe.2025.108904","url":null,"abstract":"<div><div>The paper presents a techno-economic analysis assessing two different configurations of a hydrothermal technology processing 10 kt/y of sewage sludge (23 %<sub>w</sub> solids) from municipal wastewater treatment as an alternative to their current fate mainly consisting in incineration or landfilling.</div><div>The process carries out a hydrothermal carbonization of sludges (210 °C, 34.5 bar, 35 min) producing hydrochar, and a liquid stream with lower organic content. Mass and energy balance closure and preliminary sizing have been performed in Matlab® environment, estimating capital and operating plant costs to calculate a levelized costs for sludge treatment.</div><div>Two process configurations have been assessed: Configuration A features a hydrothermal process treating the entire sewage sludge flowrate. In Configuration B, a split fraction of the sludge flow rate is sent to the hydrothermal process to produce the same amount of biochar for combustion as Configuration A, however the remaining sludge stream is sent to co-combustion reducing HTC wastewater recirculated to the water treatment plant. In both configurations A and B, HTC enables a reduction in primary energy consumption related to natural gas use, as well as lower fossil CO<sub>2</sub> emissions compared to direct incineration (−68.3 % and −35.3 % respectively). The levelized cost of sludge treatment remains below 97.40 €/ton and can decrease to 48.37 €/ton in case of no disposal costs for excess biochar.</div><div>The work includes the design of a dedicated unit for off-gas treatment; moreover, both configurations have been assessed in terms of primary energy consumption and fossil CO<sub>2</sub> emissions.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"209 ","pages":"Article 108904"},"PeriodicalIF":5.8,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145902444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-05DOI: 10.1016/j.biombioe.2025.108893
Tadelle N. Mekonen , Mulugeta A. Delele , Aregash M. Gizaw , Meketaye A. Endeshaw , Nigus W. Kebede , Kimberley B. McAuley
Biomass gasification in fluidized-bed reactors is an important process for producing carbon-neutral producer gas that can be used for power generation or as source of hydrogen-rich chemical feedstocks. Significant research has focused on studying biomass gasification using computational fluid dynamics (CFD) modeling tools. This review provides a comprehensive overview of CFD modeling techniques that have been employed to simulate gas-solid particulate behavior, including the Two-Fluid Model (TFM), Discrete Element Method (DEM), and Multiphase Particle-in-Cell (MP-PIC) method, as well as turbulence and drag models. The MP-PIC approach is recommended for simulating biomass gasification in large-scale fluidized-bed reactors without the need for high-resolution grids, making it computationally efficient. Additionally, the review critically analyzes thermochemical sub-models, including drying, pyrolysis, char gasification, and gas-phase reactions, along with the corresponding reaction mechanisms, rate expressions, and reacting particle models. This review focuses on key challenges in CFD modeling of fluidized-bed biomass gasifiers, including the lack of reliable kinetic parameters and stoichiometry for diverse biomass feedstocks. Finally, this review outlines recommendations for future research aimed at improving the accuracy for CFD models of biomass gasification in fluidized beds.
{"title":"Key challenges in CFD modeling of biomass gasification in fluidized-bed reactors: A review","authors":"Tadelle N. Mekonen , Mulugeta A. Delele , Aregash M. Gizaw , Meketaye A. Endeshaw , Nigus W. Kebede , Kimberley B. McAuley","doi":"10.1016/j.biombioe.2025.108893","DOIUrl":"10.1016/j.biombioe.2025.108893","url":null,"abstract":"<div><div>Biomass gasification in fluidized-bed reactors is an important process for producing carbon-neutral producer gas that can be used for power generation or as source of hydrogen-rich chemical feedstocks. Significant research has focused on studying biomass gasification using computational fluid dynamics (CFD) modeling tools. This review provides a comprehensive overview of CFD modeling techniques that have been employed to simulate gas-solid particulate behavior, including the Two-Fluid Model (TFM), Discrete Element Method (DEM), and Multiphase Particle-in-Cell (MP-PIC) method, as well as turbulence and drag models. The MP-PIC approach is recommended for simulating biomass gasification in large-scale fluidized-bed reactors without the need for high-resolution grids, making it computationally efficient. Additionally, the review critically analyzes thermochemical sub-models, including drying, pyrolysis, char gasification, and gas-phase reactions, along with the corresponding reaction mechanisms, rate expressions, and reacting particle models. This review focuses on key challenges in CFD modeling of fluidized-bed biomass gasifiers, including the lack of reliable kinetic parameters and stoichiometry for diverse biomass feedstocks. Finally, this review outlines recommendations for future research aimed at improving the accuracy for CFD models of biomass gasification in fluidized beds.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"209 ","pages":"Article 108893"},"PeriodicalIF":5.8,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145903391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-05DOI: 10.1016/j.biombioe.2025.108910
Ednaldo Benício de Sá Filho , Johnny David Gomes de Queiroz , Morsyleide de Freitas Rosa , Maria Cléa Brito de Figueirêdo
The growing bioeconomy calls for innovative valorization of agro-industrial residues through integrated biorefineries. Mango processing in Brazil generates nearly half of the fruit mass as residues, including peel, kernel, and seed coat, which can be converted into high-value bioproducts. This study developed and assessed a Mango Industrial Biorefinery Layout (MIBL) integrating pulp, starch, pectin, lignin, and cellulose recovery. A techno-economic analysis (TEA) and an ex-ante life cycle assessment (LCA) were conducted at industrial scale for three baseline configurations (MIBL A, B, and C) and three alternative scenarios derived from the most balanced option (MIBL B). Results showed that mango pulp dominated revenues, while pectin recovery was the most capital-intensive stage due to freeze-drying, representing over 30 % of equipment costs. The Direct Fixed Capital ranged from USD 71 to 91 million, and Net Present Values remained negative under Brazilian conditions, highlighting limited feasibility. Environmental hotspots were concentrated in pectin extraction (solvent and acid use driving climate change, toxicity, and water use impacts) and lignin/cellulose recovery (effluent discharges causing eutrophication). Alternative layouts significantly improved feasibility. MIBL B3 (pulp + starch) achieved positive NPVs under 20–30 % margins at discount rates of 3–5 %, while MIBL B1 (pulp + starch + lignin/cellulose) also reached viability under favorable conditions. By contrast, MIBL B2 (pulp + starch + pectin) remained unprofitable due to excessive capital intensity. Simplified mango biorefinery layouts provide more realistic short-term strategies for emerging economies, while integrated configurations will require technological innovation, solvent reduction, and policy incentives to align economic and environmental goals.
{"title":"Techno-economic and environmental assessments of alternative scenarios for a Brazilian mango biorefinery","authors":"Ednaldo Benício de Sá Filho , Johnny David Gomes de Queiroz , Morsyleide de Freitas Rosa , Maria Cléa Brito de Figueirêdo","doi":"10.1016/j.biombioe.2025.108910","DOIUrl":"10.1016/j.biombioe.2025.108910","url":null,"abstract":"<div><div>The growing bioeconomy calls for innovative valorization of agro-industrial residues through integrated biorefineries. Mango processing in Brazil generates nearly half of the fruit mass as residues, including peel, kernel, and seed coat, which can be converted into high-value bioproducts. This study developed and assessed a Mango Industrial Biorefinery Layout (MIBL) integrating pulp, starch, pectin, lignin, and cellulose recovery. A techno-economic analysis (TEA) and an ex-ante life cycle assessment (LCA) were conducted at industrial scale for three baseline configurations (MIBL A, B, and C) and three alternative scenarios derived from the most balanced option (MIBL B). Results showed that mango pulp dominated revenues, while pectin recovery was the most capital-intensive stage due to freeze-drying, representing over 30 % of equipment costs. The Direct Fixed Capital ranged from USD 71 to 91 million, and Net Present Values remained negative under Brazilian conditions, highlighting limited feasibility. Environmental hotspots were concentrated in pectin extraction (solvent and acid use driving climate change, toxicity, and water use impacts) and lignin/cellulose recovery (effluent discharges causing eutrophication). Alternative layouts significantly improved feasibility. MIBL B3 (pulp + starch) achieved positive NPVs under 20–30 % margins at discount rates of 3–5 %, while MIBL B1 (pulp + starch + lignin/cellulose) also reached viability under favorable conditions. By contrast, MIBL B2 (pulp + starch + pectin) remained unprofitable due to excessive capital intensity. Simplified mango biorefinery layouts provide more realistic short-term strategies for emerging economies, while integrated configurations will require technological innovation, solvent reduction, and policy incentives to align economic and environmental goals.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"209 ","pages":"Article 108910"},"PeriodicalIF":5.8,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.biombioe.2025.108859
Vijay Kannusamy , Adityas Agung Ramandani , Sivapermal Sivaramakrishnan , Jun Wei Lim , Sirasit Srinuanpan , Kuan Shiong Khoo
Thermochemical processing of plastic produces waste oil that contains hydrocarbon contaminants which pose significant threat to the environment. This study evaluates the effect of waste plastic pyrolytic oil (PPO) on the cultivation of Chlorella vulgaris FSP-E microalgae. Results showed that the treatment group T1 had less effect on the specific growth rate and biomass concentration of 0.246 ± 0.001 μ/day and 1.218 ± 0.003 g/L, respectively. While, the control showed higher specific growth rate and biomass concentration of 0.469 ± 0.001 μ/day and 2.067 ± 0.005 g/L, respectively. H2O2 analysis and thiobarbituric acid reactive substances of PPO treated cells indicated that higher concentration of PPO led to oxidative stress that adversely impacts the growth of Chlorella vulgaris FSP-E microalgae. In addition, the presence of PPO in the cultivation medium of Chlorella vulgaris FSP-E significantly influenced the biochemical composition of microalgae biomass. Machine learning models using k-Nearest Neighbors (k-NN) and Support Vector Regression (SVR) were also carried out to predict the biochemical composition using experimental value as the primary inputs. Among the evaluated models, k-NN demonstrated high predictive accuracy, achieving R2 values of 0.9827, 0.9874, and 0.9561 for carbohydrates, lipids, and proteins, respectively, in the testing dataset. Gas Chromatography-Mass Spectroscopy (GCMS) analysis indicated that the residue removed from T1 after cultivation showed an increased linoleic acid content of 69.78 %, which may serve as a biomarker for hydrocarbon remediation. This research demonstrated the feasibility of integrating microalgae cultivation as a phycoremediation approach to mitigate hydrocarbon pollutants.
{"title":"Evaluation of pyrolytic oil derived from plastic waste on Chlorella vulgaris FSP-E microalgae: A comparative study of experimental analysis and prediction models","authors":"Vijay Kannusamy , Adityas Agung Ramandani , Sivapermal Sivaramakrishnan , Jun Wei Lim , Sirasit Srinuanpan , Kuan Shiong Khoo","doi":"10.1016/j.biombioe.2025.108859","DOIUrl":"10.1016/j.biombioe.2025.108859","url":null,"abstract":"<div><div>Thermochemical processing of plastic produces waste oil that contains hydrocarbon contaminants which pose significant threat to the environment. This study evaluates the effect of waste plastic pyrolytic oil (PPO) on the cultivation of <em>Chlorella vulgaris</em> FSP-E microalgae. Results showed that the treatment group T1 had less effect on the specific growth rate and biomass concentration of 0.246 ± 0.001 μ/day and 1.218 ± 0.003 g/L, respectively. While, the control showed higher specific growth rate and biomass concentration of 0.469 ± 0.001 μ/day and 2.067 ± 0.005 g/L, respectively. H<sub>2</sub>O<sub>2</sub> analysis and thiobarbituric acid reactive substances of PPO treated cells indicated that higher concentration of PPO led to oxidative stress that adversely impacts the growth of <em>Chlorella vulgaris</em> FSP-E microalgae. In addition, the presence of PPO in the cultivation medium of <em>Chlorella vulgaris</em> FSP-E significantly influenced the biochemical composition of microalgae biomass. Machine learning models using <em>k</em>-Nearest Neighbors (<em>k</em>-NN) and Support Vector Regression (SVR) were also carried out to predict the biochemical composition using experimental value as the primary inputs. Among the evaluated models, <em>k</em>-NN demonstrated high predictive accuracy, achieving R<sup>2</sup> values of 0.9827, 0.9874, and 0.9561 for carbohydrates, lipids, and proteins, respectively, in the testing dataset. Gas Chromatography-Mass Spectroscopy (GCMS) analysis indicated that the residue removed from T1 after cultivation showed an increased linoleic acid content of 69.78 %, which may serve as a biomarker for hydrocarbon remediation. This research demonstrated the feasibility of integrating microalgae cultivation as a phycoremediation approach to mitigate hydrocarbon pollutants.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"209 ","pages":"Article 108859"},"PeriodicalIF":5.8,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-02DOI: 10.1016/j.biombioe.2025.108711
Rahul Dev Bairwan , Nur Thohiroh Md Bukhari , Mohamad Haafiz Mohamad Kassim , Mohd Nurazzi Norizan , C.K. Abdullah , Nurul Fazita Mohammad Rawi
Red seaweed (Kappaphycus alvarezii), an abundant marine biomass widely cultivated in Southeast Asia, represents a renewable feedstock for developing bio-based materials within the bio-circular economy framework. Despite its high polysaccharide content, films derived from K. alvarezii often suffer from poor mechanical strength, low thermal stability, and high moisture sensitivity, limiting their use in packaging. To address these challenges, bio-nanocomposite films were fabricated via solvent casting by reinforcing the seaweed matrix with silica nanoparticles (SNPs) at loadings of 0–7 wt%. The SNPs were first characterized for particle size and morphology to ensure uniform dispersion. Comprehensive analyses, including tensile testing, contact angle measurement, SEM, FTIR, TGA, DTG, and DSC were conducted to establish structure–property relationships. Optimal incorporation of 5 wt% SNPs enhanced film performance, delivering a tensile strength of 41.10 MPa (p < 0.001) and a water contact angle of 80.66°, reflecting statistically validated improvements in structural integrity and hydrophobicity. The elongation at break decreased from 45.39 % (control) to 32.32 % at 5 wt% SNP, suggesting reduced flexibility, while the water vapor permeability decreased from 1.23 × 10−9 to 1.14 × 10−9 g m/m2·s·Pa, demonstrating improved moisture barrier performance. Thermal analysis confirmed higher onset degradation temperatures and increased char yield in SNP-reinforced films, while excessive loading (7 wt%) led to agglomeration and property decline. The results highlight the potential of K. alvarezii-based nanocomposites as sustainable, low-carbon alternatives to petroleum-derived plastics, offering a viable biomass utilization pathway for eco-friendly industrial packaging applications in Southeast Asia's emerging bio-based industry.
{"title":"Bio-based nanocomposite films from Kappaphycus alvarezii for packaging applications","authors":"Rahul Dev Bairwan , Nur Thohiroh Md Bukhari , Mohamad Haafiz Mohamad Kassim , Mohd Nurazzi Norizan , C.K. Abdullah , Nurul Fazita Mohammad Rawi","doi":"10.1016/j.biombioe.2025.108711","DOIUrl":"10.1016/j.biombioe.2025.108711","url":null,"abstract":"<div><div>Red seaweed (<em>Kappaphycus alvarezii</em>), an abundant marine biomass widely cultivated in Southeast Asia, represents a renewable feedstock for developing bio-based materials within the bio-circular economy framework. Despite its high polysaccharide content, films derived from <em>K. alvarezii</em> often suffer from poor mechanical strength, low thermal stability, and high moisture sensitivity, limiting their use in packaging. To address these challenges, bio-nanocomposite films were fabricated via solvent casting by reinforcing the seaweed matrix with silica nanoparticles (SNPs) at loadings of 0–7 wt%. The SNPs were first characterized for particle size and morphology to ensure uniform dispersion. Comprehensive analyses, including tensile testing, contact angle measurement, SEM, FTIR, TGA, DTG, and DSC were conducted to establish structure–property relationships. Optimal incorporation of 5 wt% SNPs enhanced film performance, delivering a tensile strength of 41.10 MPa (p < 0.001) and a water contact angle of 80.66°, reflecting statistically validated improvements in structural integrity and hydrophobicity. The elongation at break decreased from 45.39 % (control) to 32.32 % at 5 wt% SNP, suggesting reduced flexibility, while the water vapor permeability decreased from 1.23 × 10<sup>−9</sup> to 1.14 × 10<sup>−9</sup> g m/m<sup>2</sup>·s·Pa, demonstrating improved moisture barrier performance. Thermal analysis confirmed higher onset degradation temperatures and increased char yield in SNP-reinforced films, while excessive loading (7 wt%) led to agglomeration and property decline. The results highlight the potential of <em>K. alvarezii</em>-based nanocomposites as sustainable, low-carbon alternatives to petroleum-derived plastics, offering a viable biomass utilization pathway for eco-friendly industrial packaging applications in Southeast Asia's emerging bio-based industry.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"209 ","pages":"Article 108711"},"PeriodicalIF":5.8,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-02DOI: 10.1016/j.biombioe.2025.108925
Francis Oppong, Xiaolu Li, Chen Yuan, Sven Eckart, Abdellatif M. Sadeq, Francis Kemausuor, Martinson A. Nartey, Xu Cangsu, Li Yuntang
{"title":"Corrigendum to “Recent developments on ethyl levulinate as a promising bio-based transportation fuel” [Biomass Bioenergy 200 (2025) 107964]","authors":"Francis Oppong, Xiaolu Li, Chen Yuan, Sven Eckart, Abdellatif M. Sadeq, Francis Kemausuor, Martinson A. Nartey, Xu Cangsu, Li Yuntang","doi":"10.1016/j.biombioe.2025.108925","DOIUrl":"https://doi.org/10.1016/j.biombioe.2025.108925","url":null,"abstract":"","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"53 1","pages":"108925"},"PeriodicalIF":6.0,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145894388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-02DOI: 10.1016/j.biombioe.2025.108905
Yuao Su, Sung-Yoon Huh
As countries pursue decarbonization, food waste management has become a growing policy priority. Anaerobic digestion enables the biogasification of food waste while simultaneously generating renewable energy and environmental co-benefits. This study examines the preferences of South Korean residents for food-waste biogas facilities using a choice experiment administered to 521 households through a stratified online survey. A mixed logit model was employed to analyse the choice data and estimate marginal willingness to pay while capturing unobserved preference heterogeneity. Results show strong preferences for electricity generation and salient environmental co-benefits—such as emission reduction and improved energy self-sufficiency—with industrial zones and urban outskirts preferred over agricultural areas, reflecting a clear urban-oriented siting preference. Quantitatively, electricity generation received the strongest marginal valuation (MWTP 205.9 KRW/year), followed by notable preferences for emissions reduction and improved waste-processing efficiency. Concurrently, disposal cost emerged as the dominant determinant of choices, and substantial heterogeneity across siting and environmental attributes revealed a distinct behavioural hierarchy in residents' preference structure. Scenario simulations further show that combining non-agricultural siting with salient co-benefits can maintain public support even under higher disposal costs. The findings highlight the need to align food waste anaerobic digestion system design with residents’ preference structures to ensure socially acceptable and feasible deployment in land-constrained and energy-import-dependent countries such as South Korea.
{"title":"Public preferences for food waste anaerobic digestion facilities: A choice experiment analysis from South Korea","authors":"Yuao Su, Sung-Yoon Huh","doi":"10.1016/j.biombioe.2025.108905","DOIUrl":"10.1016/j.biombioe.2025.108905","url":null,"abstract":"<div><div>As countries pursue decarbonization, food waste management has become a growing policy priority. Anaerobic digestion enables the biogasification of food waste while simultaneously generating renewable energy and environmental co-benefits. This study examines the preferences of South Korean residents for food-waste biogas facilities using a choice experiment administered to 521 households through a stratified online survey. A mixed logit model was employed to analyse the choice data and estimate marginal willingness to pay while capturing unobserved preference heterogeneity. Results show strong preferences for electricity generation and salient environmental co-benefits—such as emission reduction and improved energy self-sufficiency—with industrial zones and urban outskirts preferred over agricultural areas, reflecting a clear urban-oriented siting preference. Quantitatively, electricity generation received the strongest marginal valuation (MWTP 205.9 KRW/year), followed by notable preferences for emissions reduction and improved waste-processing efficiency. Concurrently, disposal cost emerged as the dominant determinant of choices, and substantial heterogeneity across siting and environmental attributes revealed a distinct behavioural hierarchy in residents' preference structure. Scenario simulations further show that combining non-agricultural siting with salient co-benefits can maintain public support even under higher disposal costs. The findings highlight the need to align food waste anaerobic digestion system design with residents’ preference structures to ensure socially acceptable and feasible deployment in land-constrained and energy-import-dependent countries such as South Korea.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"209 ","pages":"Article 108905"},"PeriodicalIF":5.8,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-01DOI: 10.1016/j.biombioe.2025.108909
Hongyan Chen , Mengqian Zou , Weihui Xu , Wenjing Chen , Yunlong Hu , Fei Gao , Zhigang Wang
The global breeding industry faces a protein supply shortage. Glutamate mother liquor bioconversion slurry (GMLBS), a high amino acid protein slurry, is a proteinal soybean meal alternative. However, the safety and commercial value of GMLBS as a novel protein feed require validation. This study assessed the safety of GMLBS and its effects on mice health when replacing soybean meal in their diet. The study began by monitoring the behavior and growth of mice after administering different ratios of GMLBS. Different GMLBS ratios replaced soybean meal in the diet, where growth performance and nutrient digestibility were observed. Results showed that GMLBS is safe, with no adverse effects. It enhanced antioxidant enzyme activities, immune levels, while reducing inflammation. GMLBS increased the relative abundance of Saccharomyces and Wickerhamomyces while reducing Staphylococcus. Meanwhile, it affects the ascorbate and aldarate metabolism pathways. GMLBS effectively enhances the health of mice, particularly when it replaces 60 % of soybean meal in the basal diet. These results demonstrate the viability and benefits of GMLBS as a novel protein feed, offering a potential solution to monosodium glutamate wastewater pollution and the global shortage of protein resources.
{"title":"Glutamate mother liquor bioconversion slurry enhances antioxidant performance in mice by modifying gut microbiota and ascorbic acid metabolism","authors":"Hongyan Chen , Mengqian Zou , Weihui Xu , Wenjing Chen , Yunlong Hu , Fei Gao , Zhigang Wang","doi":"10.1016/j.biombioe.2025.108909","DOIUrl":"10.1016/j.biombioe.2025.108909","url":null,"abstract":"<div><div>The global breeding industry faces a protein supply shortage. Glutamate mother liquor bioconversion slurry (GMLBS), a high amino acid protein slurry, is a proteinal soybean meal alternative. However, the safety and commercial value of GMLBS as a novel protein feed require validation. This study assessed the safety of GMLBS and its effects on mice health when replacing soybean meal in their diet. The study began by monitoring the behavior and growth of mice after administering different ratios of GMLBS. Different GMLBS ratios replaced soybean meal in the diet, where growth performance and nutrient digestibility were observed. Results showed that GMLBS is safe, with no adverse effects. It enhanced antioxidant enzyme activities, immune levels, while reducing inflammation. GMLBS increased the relative abundance of <em>Saccharomyces</em> and <em>Wickerhamomyces</em> while reducing <em>Staphylococcus</em>. Meanwhile, it affects the ascorbate and aldarate metabolism pathways. GMLBS effectively enhances the health of mice, particularly when it replaces 60 % of soybean meal in the basal diet. These results demonstrate the viability and benefits of GMLBS as a novel protein feed, offering a potential solution to monosodium glutamate wastewater pollution and the global shortage of protein resources.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"209 ","pages":"Article 108909"},"PeriodicalIF":5.8,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145867436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}