Biomass & Bioenergy最新文献_第3页

Process model and comparative life cycle assessment (LCA) of a biorefinery concept based on fractionated subcritical water hydrolysis for sugar cane trash valorization

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-24 DOI: 10.1016/j.biombioe.2025.107740

Gabriel Morales-Gutiérrez, Víctor Marulanda-Cardona

Subcritical water hydrolysis, which incorporates depolymerization, reaction and separation of sugars from biomass, has been proposed as an alternative to conventional hydrolysis. Since this process does not require chemicals, it could potentially lead to simpler biorefinery schemes. Yet, high water to biomass (S/F) mass ratios reported in experimental studies could limit technical feasibility for scaling-up purposes, as well as resulting in an inferior environmental performance due to the production of highly diluted sugar fractions. Therefore, in this study a biorefinery model based on fractionated subcritical water hydrolysis of sugar cane trash was proposed and simulated for (S/F) ratios in the range 7.5–24, based on previously reported experimental results and simulation studies, to assess the effect of mass and energy inputs in the environmental performance when compared to the conventional acid-enzymatic process by means of a gate-to-gate LCA assessment. LCA results showed inferior environmental performance of the proposed process with (S/F) of 12 and 24, ratios considerably lower than those usually employed in experimental studies, which is mainly the result of the energy requirements as steam production. Yet, a (S/F) ratio of 7.5 showed an improved environmental performance in 12 out of 18 categories assessed, which was attributed not only to the decreased energy consumption but also to the elimination of additional environmental burdens such as the production of chemicals and enzymes. These results suggest further experimental research should focus on reducing (S/F) ratios in experimental studies in order to advance the technical feasibility of the proposed process.

{"title":"Process model and comparative life cycle assessment (LCA) of a biorefinery concept based on fractionated subcritical water hydrolysis for sugar cane trash valorization","authors":"Gabriel Morales-Gutiérrez, Víctor Marulanda-Cardona","doi":"10.1016/j.biombioe.2025.107740","DOIUrl":"10.1016/j.biombioe.2025.107740","url":null,"abstract":"<div><div>Subcritical water hydrolysis, which incorporates depolymerization, reaction and separation of sugars from biomass, has been proposed as an alternative to conventional hydrolysis. Since this process does not require chemicals, it could potentially lead to simpler biorefinery schemes. Yet, high water to biomass (S/F) mass ratios reported in experimental studies could limit technical feasibility for scaling-up purposes, as well as resulting in an inferior environmental performance due to the production of highly diluted sugar fractions. Therefore, in this study a biorefinery model based on fractionated subcritical water hydrolysis of sugar cane trash was proposed and simulated for (S/F) ratios in the range 7.5–24, based on previously reported experimental results and simulation studies, to assess the effect of mass and energy inputs in the environmental performance when compared to the conventional acid-enzymatic process by means of a gate-to-gate LCA assessment. LCA results showed inferior environmental performance of the proposed process with (S/F) of 12 and 24, ratios considerably lower than those usually employed in experimental studies, which is mainly the result of the energy requirements as steam production. Yet, a (S/F) ratio of 7.5 showed an improved environmental performance in 12 out of 18 categories assessed, which was attributed not only to the decreased energy consumption but also to the elimination of additional environmental burdens such as the production of chemicals and enzymes. These results suggest further experimental research should focus on reducing (S/F) ratios in experimental studies in order to advance the technical feasibility of the proposed process.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107740"},"PeriodicalIF":5.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bio-aromatics: Revolutionizing the integrated biomass and plastic waste valorization for high-value aromatic hydrocarbons via bifunctional catalytic pathways of bio-syngas conversion

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-23 DOI: 10.1016/j.biombioe.2025.107736

Maria Saif, Rubén Blay-Roger, Muhammad Asif Nawaz, Luis F. Bobadilla, Tomas Ramirez-Reina, J.A. Odriozola

Aromatic hydrocarbons play a pivotal role in various industrial applications, serving as essential building blocks to produce polymers, resins, and specialty chemicals. Traditionally, their synthesis has been reliant on fossil fuels, raising concerns about environmental sustainability and resource depletion. However, recent advancements in the field have paved the way for a paradigm shift, with a focus on biomass-derived synthesis gas as a renewable and environmentally friendly feedstock. This review explores innovative shortcuts in the synthesis of aromatic hydrocarbons, a key area of research that holds promise for a more sustainable and efficient future. As we delve into the intricacies of biomass-derived synthesis gas conversion, we will examine breakthroughs in catalyst development, process optimization, and integrated approaches. By scrutinizing these advancements, we aim to provide a comprehensive overview of the current state of the art, highlighting both challenges and opportunities for further exploration. The urgency of addressing environmental concerns and the growing demand for renewable alternatives underscore the importance of reevaluating the methodologies. The unique characteristics of biomass-derived synthesis gas coupled with co-gasification processes present an intriguing avenue for redefining the landscape of aromatic hydrocarbon synthesis. Through this exploration, we seek to unravel the complexities of these innovative shortcuts, offering insights that may contribute to a more sustainable and greener future for the chemical industry.

{"title":"Bio-aromatics: Revolutionizing the integrated biomass and plastic waste valorization for high-value aromatic hydrocarbons via bifunctional catalytic pathways of bio-syngas conversion","authors":"Maria Saif, Rubén Blay-Roger, Muhammad Asif Nawaz, Luis F. Bobadilla, Tomas Ramirez-Reina, J.A. Odriozola","doi":"10.1016/j.biombioe.2025.107736","DOIUrl":"10.1016/j.biombioe.2025.107736","url":null,"abstract":"<div><div>Aromatic hydrocarbons play a pivotal role in various industrial applications, serving as essential building blocks to produce polymers, resins, and specialty chemicals. Traditionally, their synthesis has been reliant on fossil fuels, raising concerns about environmental sustainability and resource depletion. However, recent advancements in the field have paved the way for a paradigm shift, with a focus on biomass-derived synthesis gas as a renewable and environmentally friendly feedstock. This review explores innovative shortcuts in the synthesis of aromatic hydrocarbons, a key area of research that holds promise for a more sustainable and efficient future. As we delve into the intricacies of biomass-derived synthesis gas conversion, we will examine breakthroughs in catalyst development, process optimization, and integrated approaches. By scrutinizing these advancements, we aim to provide a comprehensive overview of the current state of the art, highlighting both challenges and opportunities for further exploration. The urgency of addressing environmental concerns and the growing demand for renewable alternatives underscore the importance of reevaluating the methodologies. The unique characteristics of biomass-derived synthesis gas coupled with co-gasification processes present an intriguing avenue for redefining the landscape of aromatic hydrocarbon synthesis. Through this exploration, we seek to unravel the complexities of these innovative shortcuts, offering insights that may contribute to a more sustainable and greener future for the chemical industry.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107736"},"PeriodicalIF":5.8,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471738","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}

引用次数: 0

A parametric study of particle size influence on sewage sludge-derived hydrochar and coal char co-gasification: Reactivity and carbon conversion analysis 粒度对污水污泥衍生的水炭和煤炭联合气化影响的参数研究：反应性与碳转化分析

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-22 DOI: 10.1016/j.biombioe.2025.107715

Azhar Ali Laghari , Asma Leghari , Akash Kumar , Lata Kumari , Muhammad Rizwan , Qurat-ul-ain Abro , Memon Kashif Ali , Yongheng Shen , Qingxia Guo

Sewage sludge (SS) poses significant environmental and socio-economic challenges due to its high moisture content and limited disposal options. Hydrothermal carbonization (HTC) has been identified as an effective pretreatment method to enhance the stability and reactivity of hydrochar (HC) for energy applications. This study investigates the co-gasification behavior of pyrolyzed HC derived from SS and coal char in CO2 environments, with a focus on the influence of temperature (850 °C, 900 °C, and 950 °C) and particle size (35 μm, 110 μm, 250 μm, and 430 μm) on gasification reactivity and carbon conversion. Experimental results show that smaller particles (35 μm) exhibited the highest reactivity due to their larger surface area-to-volume ratio, achieving a gasification rate of 0.010945 s⁻¹ at 950 °C. Increasing the temperature significantly enhanced carbon conversion, with conversion rates accelerating particularly at 950 °C during the initial phases. Coal char demonstrated rapid thermal degradation, while HC displayed superior thermal stability and reduced reactivity at higher temperatures due to its more condensed carbon structure. Notably, HC concentrations (15 %) improved overall reactivity compared to lower concentrations (5 %), emphasizing the synergistic effects of co-gasification. This study highlights the critical role of temperature and particle size in optimizing waste-to-energy conversion processes, offering actionable insights for enhancing efficiency and sustainability in waste management systems.

{"title":"A parametric study of particle size influence on sewage sludge-derived hydrochar and coal char co-gasification: Reactivity and carbon conversion analysis","authors":"Azhar Ali Laghari , Asma Leghari , Akash Kumar , Lata Kumari , Muhammad Rizwan , Qurat-ul-ain Abro , Memon Kashif Ali , Yongheng Shen , Qingxia Guo","doi":"10.1016/j.biombioe.2025.107715","DOIUrl":"10.1016/j.biombioe.2025.107715","url":null,"abstract":"<div><div>Sewage sludge (SS) poses significant environmental and socio-economic challenges due to its high moisture content and limited disposal options. Hydrothermal carbonization (HTC) has been identified as an effective pretreatment method to enhance the stability and reactivity of hydrochar (HC) for energy applications. This study investigates the co-gasification behavior of pyrolyzed HC derived from SS and coal char in CO2 environments, with a focus on the influence of temperature (850 °C, 900 °C, and 950 °C) and particle size (35 μm, 110 μm, 250 μm, and 430 μm) on gasification reactivity and carbon conversion. Experimental results show that smaller particles (35 μm) exhibited the highest reactivity due to their larger surface area-to-volume ratio, achieving a gasification rate of 0.010945 s⁻<sup>1</sup> at 950 °C. Increasing the temperature significantly enhanced carbon conversion, with conversion rates accelerating particularly at 950 °C during the initial phases. Coal char demonstrated rapid thermal degradation, while HC displayed superior thermal stability and reduced reactivity at higher temperatures due to its more condensed carbon structure. Notably, HC concentrations (15 %) improved overall reactivity compared to lower concentrations (5 %), emphasizing the synergistic effects of co-gasification. This study highlights the critical role of temperature and particle size in optimizing waste-to-energy conversion processes, offering actionable insights for enhancing efficiency and sustainability in waste management systems.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107715"},"PeriodicalIF":5.8,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471737","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}

引用次数: 0

Enhancement of cellulose nanocrystal yield from oil palm empty fruit bunches: A comparative study of binary and ternary deep eutectic solvents with pulsed electric field pretreatment

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-22 DOI: 10.1016/j.biombioe.2025.107672

Angky Wahyu Putranto , Saurabh Dutta , Ciptian Weried Priananda , Hazlee Azil Illias , Qothrunnada Syafiqoh , Nanang Masruchin , Yusuf Wibisono , Sri Suhartini , Adeline Seak May Chua , Gek Cheng Ngoh

Effective pretreatment of lignocellulosic biomass is essential in ensuring sustainable cellulose nanocrystal (CNC) production. Binary and ternary deep eutectic solvent (DES)-based pretreatment coupled with assistive techniques has yielded high cellulose extract and lignin removal efficiency. In addition, pulsed electric field (PEF)-assisted pretreatment showed good performance to accelerate the lignocellulose fractionation process under mild conditions. However, the production of CNC from oil palm empty fruit bunches (OPEFBs) by utilizing binary and ternary DES incorporated with a PEF requires in-depth exploration to provide insights into its electroporation effect based on different DES properties. This study investigates CNC production from OPEFB pretreated with binary and ternary DES integrated with PEF. The extracted cellulose (EC) and CNC were evaluated for their characteristics and energy consumption. Simulations of binary and ternary DES properties assessed current and voltage distribution in the PEF chamber. Under 6 kV/cm for 3 min, the pretreatment achieved high solid recovery, α-cellulose, lignin removal, and EC crystallinity. CNC has yield ranged from 78.44 to 83.62 %, with dimensions of 120.5–126.9 nm of length and 10.2–10.4 nm of width, and a crystallinity index of 81.3–83.7 %. The DES-PEF method demonstrated faster processing (3 min) and lower energy consumption (0.4–2.1 kWh/kg) compared to DES-conventional heating, with total of CNC production energy at 36–38 kWh/kg. Overall, the binary DES demonstrates better OPEFB pretreatment efficiency than the ternary DES when incorporated with the PEF-assistive technique. This novel and innovative method devises a time- and energy-saving biomass pretreatment for sustainable CNC production.

{"title":"Enhancement of cellulose nanocrystal yield from oil palm empty fruit bunches: A comparative study of binary and ternary deep eutectic solvents with pulsed electric field pretreatment","authors":"Angky Wahyu Putranto , Saurabh Dutta , Ciptian Weried Priananda , Hazlee Azil Illias , Qothrunnada Syafiqoh , Nanang Masruchin , Yusuf Wibisono , Sri Suhartini , Adeline Seak May Chua , Gek Cheng Ngoh","doi":"10.1016/j.biombioe.2025.107672","DOIUrl":"10.1016/j.biombioe.2025.107672","url":null,"abstract":"<div><div>Effective pretreatment of lignocellulosic biomass is essential in ensuring sustainable cellulose nanocrystal (CNC) production. Binary and ternary deep eutectic solvent (DES)-based pretreatment coupled with assistive techniques has yielded high cellulose extract and lignin removal efficiency. In addition, pulsed electric field (PEF)-assisted pretreatment showed good performance to accelerate the lignocellulose fractionation process under mild conditions. However, the production of CNC from oil palm empty fruit bunches (OPEFBs) by utilizing binary and ternary DES incorporated with a PEF requires in-depth exploration to provide insights into its electroporation effect based on different DES properties. This study investigates CNC production from OPEFB pretreated with binary and ternary DES integrated with PEF. The extracted cellulose (EC) and CNC were evaluated for their characteristics and energy consumption. Simulations of binary and ternary DES properties assessed current and voltage distribution in the PEF chamber. Under 6 kV/cm for 3 min, the pretreatment achieved high solid recovery, α-cellulose, lignin removal, and EC crystallinity. CNC has yield ranged from 78.44 to 83.62 %, with dimensions of 120.5–126.9 nm of length and 10.2–10.4 nm of width, and a crystallinity index of 81.3–83.7 %. The DES-PEF method demonstrated faster processing (3 min) and lower energy consumption (0.4–2.1 kWh/kg) compared to DES-conventional heating, with total of CNC production energy at 36–38 kWh/kg. Overall, the binary DES demonstrates better OPEFB pretreatment efficiency than the ternary DES when incorporated with the PEF-assistive technique. This novel and innovative method devises a time- and energy-saving biomass pretreatment for sustainable CNC production.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107672"},"PeriodicalIF":5.8,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464299","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}

引用次数: 0

Biodiesel synthesis from Semen Abutili (Abutilon theophrasti Medic.) seed oil utilizing a novel immobilized complex lipase: Simultaneously ethanolysis and esterification

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-21 DOI: 10.1016/j.biombioe.2025.107731

Rui Zhang, Jingjing Guo, Yaoyao Zhang, Shangde Sun

In this study, two free lipases (CALB and Eversa® Transform 2.0 (ET)) were immobilized on the epoxy resin ES-108B to simultaneously catalyze the ethanolysis of Semen Abutili seed oil (SASO) for biodiesel production and the esterification to decrease acid value (AV) of biodiesel product, and the AV was conformed with the requirement (AV ≤ 0.5 mg KOH/g) of ASTM D6751. Response surface methodology was used to investigate optimal variables of the immobilization of complex lipase. The optimal conditions for the immobilization of complex lipase were immobilized time 20 h, pH 7, and 11 mL complex lipase. Protein loading on the immobilized complex lipase under the optimal conditions was 68.1 ± 2.1 mg/g. Fourier transform infrared spectroscopy and Confocal laser scanning microscope were employed to demonstrate that the complex lipase has been successfully immobilized on the carrier ES-108B. The reusability of immobilized complex lipase were significantly improved, and the biodiesel yield was remained above 80 % after reused 10 cycles. Under the optimal conditions of 4A-MS addition 1.2 g/g, lipase load 14 %, and substrate ratio 9:1 at 37 °C for 11 h, the yield and AV of biodiesel using SASO with high AV (20.4 ± 0.1 mg KOH/g) as feedstock were 95.1 ± 1.2 % and 0.46 ± 0.05 mg KOH/g, respectively. The SASO biodiesel was accorded with ASTM D6751 standard. Therefore, the immobilized complex lipase can be used as an efficient, recyclable and low-cost biocatalyst for biodiesel synthesis.

{"title":"Biodiesel synthesis from Semen Abutili (Abutilon theophrasti Medic.) seed oil utilizing a novel immobilized complex lipase: Simultaneously ethanolysis and esterification","authors":"Rui Zhang, Jingjing Guo, Yaoyao Zhang, Shangde Sun","doi":"10.1016/j.biombioe.2025.107731","DOIUrl":"10.1016/j.biombioe.2025.107731","url":null,"abstract":"<div><div>In this study, two free lipases (CALB and Eversa® Transform 2.0 (ET)) were immobilized on the epoxy resin ES-108B to simultaneously catalyze the ethanolysis of Semen Abutili seed oil (SASO) for biodiesel production and the esterification to decrease acid value (AV) of biodiesel product, and the AV was conformed with the requirement (AV ≤ 0.5 mg KOH/g) of ASTM <span><span>D6751</span><svg><path></path></svg></span>. Response surface methodology was used to investigate optimal variables of the immobilization of complex lipase. The optimal conditions for the immobilization of complex lipase were immobilized time 20 h, pH 7, and 11 mL complex lipase. Protein loading on the immobilized complex lipase under the optimal conditions was 68.1 ± 2.1 mg/g. Fourier transform infrared spectroscopy and Confocal laser scanning microscope were employed to demonstrate that the complex lipase has been successfully immobilized on the carrier ES-108B. The reusability of immobilized complex lipase were significantly improved, and the biodiesel yield was remained above 80 % after reused 10 cycles. Under the optimal conditions of 4A-MS addition 1.2 g/g, lipase load 14 %, and substrate ratio 9:1 at 37 °C for 11 h, the yield and AV of biodiesel using SASO with high AV (20.4 ± 0.1 mg KOH/g) as feedstock were 95.1 ± 1.2 % and 0.46 ± 0.05 mg KOH/g, respectively. The SASO biodiesel was accorded with ASTM <span><span>D6751</span><svg><path></path></svg></span> standard. Therefore, the immobilized complex lipase can be used as an efficient, recyclable and low-cost biocatalyst for biodiesel synthesis.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107731"},"PeriodicalIF":5.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454353","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}

引用次数: 0

Critical review on revamping circular economy strategies for the co-production of biosurfactants and lipase from agro-industrial wastes through resource recovery and life cycle assessment

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-21 DOI: 10.1016/j.biombioe.2025.107733

Roshan Jaiswal , Padmanaban Velayudhaperumal Chellam , Rangabhashiyam Selvasembian

In recent decades, biosurfactants have gained a variety of applications in the agro-industrial and environmental sectors. Advances in microbial bioprocessing can address global demand for biosurfactants by intensifying processes on co-production with lipases, enhancing their applications in agro-industrial and environmental sectors. Key challenges in the co-production of lipases and biosurfactants include inefficiencies in resource utilization, recycling, market value retention and environmental impacts. Waste oil cakes from food processing, ayurvedic and petrochemical industries can be used as substrates for lipases and biosurfactants, promoting resource recovery and the circular economy. Though this strategy increases the production rate and the economy associated with this, the key bottlenecks are the stability of the products, understanding the co-metabolism, simultaneous process intensification methods, scaling up, and its end application. This review explores the potential of the circular economy principles, including waste reduction, resource recovery, and resource conservation, to co-produce lipases and biosurfactants. The Life Cycle Assessment (LCA) is discussed in this review to incorporate environmental sustainability in the cumulative production system for lipases and biosurfactants. Adopting a circular economy is beneficial for achieving a balance between economic growth and environmental sustainability in bioprocessing.

{"title":"Critical review on revamping circular economy strategies for the co-production of biosurfactants and lipase from agro-industrial wastes through resource recovery and life cycle assessment","authors":"Roshan Jaiswal , Padmanaban Velayudhaperumal Chellam , Rangabhashiyam Selvasembian","doi":"10.1016/j.biombioe.2025.107733","DOIUrl":"10.1016/j.biombioe.2025.107733","url":null,"abstract":"<div><div>In recent decades, biosurfactants have gained a variety of applications in the agro-industrial and environmental sectors. Advances in microbial bioprocessing can address global demand for biosurfactants by intensifying processes on co-production with lipases, enhancing their applications in agro-industrial and environmental sectors. Key challenges in the co-production of lipases and biosurfactants include inefficiencies in resource utilization, recycling, market value retention and environmental impacts. Waste oil cakes from food processing, ayurvedic and petrochemical industries can be used as substrates for lipases and biosurfactants, promoting resource recovery and the circular economy. Though this strategy increases the production rate and the economy associated with this, the key bottlenecks are the stability of the products, understanding the co-metabolism, simultaneous process intensification methods, scaling up, and its end application. This review explores the potential of the circular economy principles, including waste reduction, resource recovery, and resource conservation, to co-produce lipases and biosurfactants. The Life Cycle Assessment (LCA) is discussed in this review to incorporate environmental sustainability in the cumulative production system for lipases and biosurfactants. Adopting a circular economy is beneficial for achieving a balance between economic growth and environmental sustainability in bioprocessing.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107733"},"PeriodicalIF":5.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454352","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}

引用次数: 0

Isolation and characterization of nanocellulose from jackfruit peel: A comparative analysis of organic and inorganic acid hydrolysis on structural, thermal, and rheological properties

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-20 DOI: 10.1016/j.biombioe.2025.107716

Subhanki Padhi , Ashutosh Singh , Valerie Orsat , Winny Routray

Jackfruit peel (JP) is a lignocellulosic biomass rich in cellulosic components with promising upcycling potential. This work involves the comparative study of the extraction of nanocellulose (NC) from JP by using different inorganic (sulphuric (SA), hydrochloric (HA), and phosphoric acid (PA)) and organic (formic (FA), oxalic (OA), and citric acid (CA)) acids at 6M concentration for 3 h at 80 °C. Yield, particle size, zeta potential, crystallinity, morphology (FESEM and TEM), rheological, and thermal properties (TGA) were determined to investigate the influence of organic and inorganic acid hydrolysis on obtained nanocellulose. Inorganic acid hydrolysis produced nanocellulose with particle size ranging from 100 to 160 nm, whereas organic acid hydrolyzed nanocellulose had a particle size ranging from 170 to 230 nm. Organic acid hydrolyzed NCs had higher crystallinity than inorganic acid hydrolyzed NCs (NC/CA > NC/OA > NC/FA > NC/PA > NC/HA > NC/SA). The functional properties of NCs varied with size and crystallinity of NCs. FTIR spectra showed that the native functional groups of cellulose remained intact in the obtained nanocellulose. TGA exhibited good thermal stability of NCs, and cellulose as compared to raw JP. Rheological characteristics revealed the shear thinning behaviour and the gel-forming ability of nanocellulose suspension. The characterization of nanocellulose provided detailed insights into how different acids influence its structural and functional properties, highlighting their implications for diverse applications. This study emphasizes transformation of lignocellulosic biomass into nanocellulose as a sustainable strategy to reduce environmental waste and promote circular economy practices.

{"title":"Isolation and characterization of nanocellulose from jackfruit peel: A comparative analysis of organic and inorganic acid hydrolysis on structural, thermal, and rheological properties","authors":"Subhanki Padhi , Ashutosh Singh , Valerie Orsat , Winny Routray","doi":"10.1016/j.biombioe.2025.107716","DOIUrl":"10.1016/j.biombioe.2025.107716","url":null,"abstract":"<div><div>Jackfruit peel (JP) is a lignocellulosic biomass rich in cellulosic components with promising upcycling potential. This work involves the comparative study of the extraction of nanocellulose (NC) from JP by using different inorganic (sulphuric (SA), hydrochloric (HA), and phosphoric acid (PA)) and organic (formic (FA), oxalic (OA), and citric acid (CA)) acids at 6M concentration for 3 h at 80 °C. Yield, particle size, zeta potential, crystallinity, morphology (FESEM and TEM), rheological, and thermal properties (TGA) were determined to investigate the influence of organic and inorganic acid hydrolysis on obtained nanocellulose. Inorganic acid hydrolysis produced nanocellulose with particle size ranging from 100 to 160 nm, whereas organic acid hydrolyzed nanocellulose had a particle size ranging from 170 to 230 nm. Organic acid hydrolyzed NCs had higher crystallinity than inorganic acid hydrolyzed NCs (NC/CA > NC/OA > NC/FA > NC/PA > NC/HA > NC/SA). The functional properties of NCs varied with size and crystallinity of NCs. FTIR spectra showed that the native functional groups of cellulose remained intact in the obtained nanocellulose. TGA exhibited good thermal stability of NCs, and cellulose as compared to raw JP. Rheological characteristics revealed the shear thinning behaviour and the gel-forming ability of nanocellulose suspension. The characterization of nanocellulose provided detailed insights into how different acids influence its structural and functional properties, highlighting their implications for diverse applications. This study emphasizes transformation of lignocellulosic biomass into nanocellulose as a sustainable strategy to reduce environmental waste and promote circular economy practices.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107716"},"PeriodicalIF":5.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444770","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}

引用次数: 0

Machine learning prediction of density of fatty acid methyl ester mixed with alkanes biodiesel over a wide range of operating conditions

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-20 DOI: 10.1016/j.biombioe.2025.107712

Soud Khalil Ibrahim , Rafid Jihad Albadr , Hardik Doshi , Anupam Yadav , Suhas Ballal , Abhayveer Singh , K. Satyam Naidu , Girish Chandra Sharma , Waam mohammed taher , Mariem Alwan , Mahmood Jasem Jawad , Hiba Mushtaq , Mehrdad Mottaghi

Biodiesel is observed as more environmentally friendly than fossil fuels because it contains no sulfur, produces low carbon oxide emissions when burned, and has a high oxygen content that promotes thorough combustion. Biodiesel is often blended with fossil diesel to meet the required properties for use as a fuel. Decane and dodecane are commonly utilized as substitutes for fossil diesel due to their prevalence in fossil diesel. The goal of this study is to employ different machine learning techniques in order to develop predictive models for the density of fatty acid methyl esters mixed with alkanes as biodiesel using experimental data. The machine learning methods utilized include Adaptive Boosting (AB), Random Forest (RF), Decision Tree (DT), Convolutional Neural Network (CNN), Ensemble Learning (EL), Multilayer Perceptron Artificial Neural Network (MLP-ANN) and Support Vector Machine (SVM). Various statistical metrics and visual methods serve as indicators of accuracy performance. The findings indicate that almost all the collected data points are appropriate for building the model. It is shown that decane mole fraction is the most influential factor on the density. The assessment demonstrated that CNN and SVR are the most precise intelligent models due to the emerged highest R-squared values (0.999, and 0.998, respectively, for the testing phase), lowest mean square error (1.41 and 2.76, respectively, for the testing phase), lowest average absolute relative error (0.125 % and 0.136 %, respectively, for the testing phase), and accurate trend forecasting of density as a function of input parameters. The developed models of CNN and SVR also outperform Tammann−Tait correlation in terms of accuracy and robustness.

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引用次数: 0

An integrated laboratory and industrial scale study of autothermal torrefaction of hardwood, softwood and Miscanthus 对硬木、软木和马齿苋的自热烘烤进行实验室和工业规模的综合研究

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-19 DOI: 10.1016/j.biombioe.2025.107723

Shalini Graham , Jenny M. Jones , Martijn Dekker

Torrefaction research at an industrial scale is rarely reported in the literature. This study provides a unique combination of 1100 kgh⁻¹ torrefaction trials for autothermal operation in an industrial setting, with underpinning investigations from laboratory-scale thermogravimetric analysis (TGA). The feedstocks were softwood (pine and spruce) and hardwood (alder and ash) species as well as an herbaceous biomass (Miscanthus). The laboratory results were used to interpret their plant-scale torrefaction profiles and gave key insights on process optimisation and control. Industrial-scale trials on ash wood were challenging due to large fluctuations in both temperature and process gas generation. TGA studies indicated fast rates of torrefaction and a low temperature exotherm for this wood type, which can explain the observed behaviour. The hardwoods achieved autothermal operation in torrefaction more easily than the softwoods, and the Miscanthus showed the most promise for continuous, autothermal production. TGA provided nuanced insights into the relative rates of mass loss, characteristic decomposition temperatures and exo/endothermic thermal behaviours which were able to give perceptive interpretation of the plant scale observations. A dominant factor is the nature and reactivity of the hemicelluloses and the associated low temperature exotherm that exists for some feedstocks, particularly hardwoods. Another factor is the catalytic components, particularly potassium, and their availability to participate in catalytic torrefaction reactions. The novel integrated study highlighted the impact of highly reactive hemicelluloses in scale-up, whereby the small differences in thermochemistry identified by TGA are magnified and affect process control and ease of autothermal operation.

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引用次数: 0

Effect of calcination temperature and atmosphere on the properties and performance of CuAl catalysts for glycerol dehydration to acetol

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-19 DOI: 10.1016/j.biombioe.2025.107725

Alejandro Lete, Francisco Lacleta, Lucía García, Joaquín Ruiz, Jesús Arauzo

A series of CuAl catalysts were prepared by the coprecipitation method. The objective of this study was to investigate the influence of different calcination temperatures (500, 600, and 675 °C) and calcination atmospheres (N₂ or air) on the catalysts physicochemical properties and performance in the gas-phase glycerol dehydration to acetol. The catalytic tests were carried out in a fixed bed reactor at 250 °C, atmospheric pressure, and a catalyst weight to glycerol flow rate ratio (W/m) of 30 g_Catalyst min g_Glycerol⁻¹. The catalysts were characterized by ICP-OES, N₂ adsorption-desorption, X-ray diffraction (XRD), H₂ temperature programmed reduction (H₂-TPR), temperature gravimetric analysis (TGA), and elemental analysis. The characterization results revealed that both calcination temperature and calcination atmosphere influenced the textural and metallic properties. Increasing the calcination temperature lowered the reduction temperature, and decreased the surface area. The calcination atmosphere influenced the surface area and pore diameter, and the N₂ atmosphere generated a larger pore diameter. The best catalytic activity was achieved by the CuAl-675-N catalyst calcined at 675 °C in a N₂ atmosphere, which produced a glycerol conversion of 99.0 % and an acetol yield of 67.3 %. The superior performance could be attributed to textural properties, the Cu phase, and minimized carbon deposition, establishing it as one efficient catalyst derived from inexpensive and widely available metals. This work proposes an economical and simple technique based on calcination to improve the catalytic activity of Cu-based catalysts.

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引用次数: 0