BioEnergy Research最新文献_第7页

Unveiling the Biomass Valorization: The Microbial Diversity in Promoting a Sustainable Socio-economy 揭示生物质的价值：促进可持续社会经济的微生物多样性

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-15 DOI: 10.1007/s12155-024-10743-6

Antonielle Vieira Monclaro, Helder Andrey Rocha Gomes, Gilvan Caetano Duarte, Leonora Rios de Souza Moreira, Edivaldo Ximenes Ferreira Filho

{"title":"Unveiling the Biomass Valorization: The Microbial Diversity in Promoting a Sustainable Socio-economy","authors":"Antonielle Vieira Monclaro, Helder Andrey Rocha Gomes, Gilvan Caetano Duarte, Leonora Rios de Souza Moreira, Edivaldo Ximenes Ferreira Filho","doi":"10.1007/s12155-024-10743-6","DOIUrl":"10.1007/s12155-024-10743-6","url":null,"abstract":"<div><p>Lignocellulosic biomass is of significant industrial and scientific interest. Residues derived from different activities (agro-industrial work, food consumption, wood use, urban solid waste, etc.) and their subsequent use are key to extending circularity models to the different technological sectors that are beginning to implement circular economy cycles. Biorefineries are integrated platforms that value waste conversion into various value-added products. The generation of bioproducts derived from lignocellulosic waste (green fuels, green chemicals, and biomaterials) has promoted a shift from a fossil fuel–based economy to a more sustainable one. In addition, integrating biorefineries into the circular economy framework promotes a comprehensive approach to resource management, waste reduction, and sustainable development, which contributes to the overall resilience and efficiency of societal systems. There has been increased focus on the application of “canonical microorganisms” for residual biomass conversion, such as fungi, bacteria, and yeast. However, there is a plethora of other potential microorganisms that can be candidates for new biotechnological applications. This review aims to describe the valorization of different sources of lignocellulosic biomass in the global context, with a focus on Brazilian practice, and to emphasize how the use of microbial diversity is critical to enhancing current technologies, such as advanced liquid fuels. Finally, there is a discussion of the potential of anaerobic fungi, archaea, protists, and oomycetes as microbial product conversion technologies.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1355 - 1374"},"PeriodicalIF":3.1,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Three Delignification Treatments of Corncob Residues for High Cellulosic Ethanol Production 分析用于高纤维素乙醇生产的三种玉米芯残渣木质素化处理方法

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-15 DOI: 10.1007/s12155-024-10738-3

KeKe Cheng, TianMei Wu, XiaoBi Tan, HuiXiong Zhong

{"title":"Analysis of Three Delignification Treatments of Corncob Residues for High Cellulosic Ethanol Production","authors":"KeKe Cheng, TianMei Wu, XiaoBi Tan, HuiXiong Zhong","doi":"10.1007/s12155-024-10738-3","DOIUrl":"10.1007/s12155-024-10738-3","url":null,"abstract":"<div><p>Three delignification treatments of corncob residues (CCR), including NaOH, formic acid, and sulfite treatments, were compared at the respective optimized condition and in light of chemical compositions, sugar recovery, and ethanol production. NaOH and sulfite treatment can remove lignin in the CCR efficiently. Though NaOH treatment showed a superior ability of delignification, its solid cellulose recovery is lower than that of sulfite treatment. The sulfite treatment has the highest selectivity between delignification and cellulose conservation. The formic acid-treated CCR still had high lignin contents because formic acid also accelerated the solvation of cellulose. In fed-batch simultaneous saccharification and fermentation (SSF) with 25% substrate loading, the highest 77.1 ± 2.33 g/L ethanol was from NaOH-treated CCR, corresponding to a CCR-to-ethanol yield of 0.208 ± 0.0021 g/g. However, the sulfite pretreated CCR also produced 68.2 ± 2.22 g/L ethanol, with a higher CCR-to-ethanol yield of 0.219 ± 0.0012 g/g. The high substrate dosage is beneficial to ethanol concentration but not beneficial to CCR-to-ethanol yield. The optimal substrate dosage required for ethanol production depends on the targeted aim (ethanol concentration or CCR-to-ethanol yield).</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1449 - 1459"},"PeriodicalIF":3.1,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrothermal Carbonization and Torrefaction of Kenaf, Rice Husk, Corncob, and Wood Chip: Characteristics and Differences of Hydrochar and Torrefied Char 剑麻、稻壳、玉米芯和木屑的水热碳化和热解：氢化炭和焦化炭的特征和差异

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-15 DOI: 10.1007/s12155-024-10731-w

Seong Rae Lim, Ga Hee Kim, Byung Hwan Um

{"title":"Hydrothermal Carbonization and Torrefaction of Kenaf, Rice Husk, Corncob, and Wood Chip: Characteristics and Differences of Hydrochar and Torrefied Char","authors":"Seong Rae Lim, Ga Hee Kim, Byung Hwan Um","doi":"10.1007/s12155-024-10731-w","DOIUrl":"10.1007/s12155-024-10731-w","url":null,"abstract":"<div><p>The characteristics of biochar vary widely depending on the type of biomass and thermochemical conversion method. In this study, four types of biomass (kenaf, rice husk, corncob, and wood chips) were subjected to hydrothermal carbonization and torrefaction at 220 °C, 260 °C, and 300 °C for 30 min. The acquired biochars showed significant differences in the type of reaction and biomass. At each temperature, the decomposition of volatiles was more severe in hydrochar (HC) than in torrefied char (TC). The mass yields of HC were 44.30–61.63 wt.% (220 °C), 20.89–37.04 wt.% (260 °C), and 12.59–29.19 wt.% (300 °C), whereas the mass yields of TC were 94.73–97.69 wt.% (220 °C), 87.19–95.04 wt.% (260 °C), and 68.22–80.78 wt.% (300 °C). The elemental and thermal characteristics of TC changed gradually as the reaction temperature increased, and the characteristics of HC were enhanced rapidly. Wood chip biochar that was reacted at 300 °C showed the highest heating values of 28.77 MJ/kg (HC) and 21.09 MJ/kg (TC). The results of chemical analyses showed that hydrothermal carbonization strongly affected the cleavage of inter- and intra-molecular carbon bonds in cellulose and hemicellulose. In contrast, torrefaction removed the thermally fragile moisture and hemicellulose content from biomass.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1816 - 1831"},"PeriodicalIF":3.1,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production of Lipid and Xylo-oligosaccharides from Cellulose and Hemicellulose in Reed Sawdust 利用芦苇锯屑中的纤维素和半纤维素生产脂质和木寡糖

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-14 DOI: 10.1007/s12155-024-10735-6

MeiZhen Jiao, Xinran Zhang, Yiqin Wang, Jian Du, Yehan Tao, Yanna Lv, Ming Chen, Jie Lu, Haisong Wang

{"title":"Production of Lipid and Xylo-oligosaccharides from Cellulose and Hemicellulose in Reed Sawdust","authors":"MeiZhen Jiao, Xinran Zhang, Yiqin Wang, Jian Du, Yehan Tao, Yanna Lv, Ming Chen, Jie Lu, Haisong Wang","doi":"10.1007/s12155-024-10735-6","DOIUrl":"10.1007/s12155-024-10735-6","url":null,"abstract":"<div><p>Reed sawdust is a kind of paper mill waste with high cellulose and hemicellulose content. To promote the rational use of resources, it is essential to make full use of waste resources and transform them into new values. In this work, reed sawdust was pretreated with liquid hot water (LHW) at 170 °C for 30 min. A total of 39.00 g/L glucose was obtained after enzymatic saccharification of cellulose at 50 °C, 20 FPU/g-<sub>reed sawdust</sub> cellulase, 25% (w/v) reed sawdust, in 5 replenishments. When the fermentation was performed 96 h, the medium contained xylo-oligosaccharides (XOS) 11.74 g/L and biomass 15.21 g/L, in which lipid was 4.14 g/L. After spray drying, feed additives containing 29.17% XOS and 10.29% docosahexaenoic acid (DHA) can be prepared. In particular, the hemicellulose and cellulose in reed sawdust are creatively used at the same time without separation, which greatly reduces the cost of purification in traditional processes and provides a new way for the high-value transformation of sawdust resources.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1493 - 1502"},"PeriodicalIF":3.1,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140125507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Life Cycle Assessment as a Key Decision Tool for Emerging Pretreatment Technologies of Biomass-to-Biofuel: Unveiling Challenges, Advances, and Future Potential 生命周期评估作为生物质转化为生物燃料的新兴预处理技术的关键决策工具：揭示挑战、进展和未来潜力

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-14 DOI: 10.1007/s12155-024-10741-8

Jayita Chopra, Vivek Rangarajan, Senthilkumar Rathnasamy, Pinaki Dey

{"title":"Life Cycle Assessment as a Key Decision Tool for Emerging Pretreatment Technologies of Biomass-to-Biofuel: Unveiling Challenges, Advances, and Future Potential","authors":"Jayita Chopra, Vivek Rangarajan, Senthilkumar Rathnasamy, Pinaki Dey","doi":"10.1007/s12155-024-10741-8","DOIUrl":"10.1007/s12155-024-10741-8","url":null,"abstract":"<div><p>The surge in global biofuel demand is propelled by intensifying concerns over climate change and effective waste management. Government mandates on biofuel blending further boost this trend, underlining the significance of selecting renewable feedstocks, such as bioethanol and biodiesel, for biofuel production. The importance of selecting an efficient biomass pretreatment method cannot be overstated, given its status as the most energy-intensive and chemical-reliant step in the biofuel production chain. Thus, pretreatment becomes a crucial determinant in the feasibility and economic viability of biofuel technologies. Amid a wide array of pretreatment strategies, identifying a method that is both effective and sustainable is crucial for advancing biofuel commercialization. This review aims to rigorously evaluate both traditional and novel pretreatment techniques and their environmental footprints, leveraging life cycle assessment (LCA) studies from existing literature. By examining the sustainability of various pretreatment methods, this paper provides a holistic and clear view, serving as an essential resource for policymakers and industry stakeholders. It outlines the challenges faced in each phase of an LCA and proposes viable solutions. Additionally, the review furnishes valuable insights, recommendations, and directions for future research in achieving sustainable biofuel production.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 2","pages":"857 - 876"},"PeriodicalIF":3.1,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140125543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fuel Wood Pellets Produced from Sawdust of Scots Pine Mature and Juvenile Wood: Self-Heating and Off-Gassing Tests at Industrial Scale 用苏格兰松成熟木和幼年木锯末生产的燃料木粒：工业规模的自加热和脱气试验

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-12 DOI: 10.1007/s12155-024-10736-5

Workson Siwale, Michael Finell, Stefan Frodeson, Gunnar Henriksson, Jonas Berghel

{"title":"Fuel Wood Pellets Produced from Sawdust of Scots Pine Mature and Juvenile Wood: Self-Heating and Off-Gassing Tests at Industrial Scale","authors":"Workson Siwale, Michael Finell, Stefan Frodeson, Gunnar Henriksson, Jonas Berghel","doi":"10.1007/s12155-024-10736-5","DOIUrl":"10.1007/s12155-024-10736-5","url":null,"abstract":"<div><p>This study investigated self-heating and off-gassing of Scots pine (<i>Pinus sylvestris</i>) wood pellets made from sawdust generated from separated mature and juvenile wood. The pellets were produced at an industrial scale and stored in large piles of about 7.2 tonnes. The production process involved drying the sawdust using three different methods and to varying moisture contents. The results indicated significant influences of both raw material type (<i>F</i> <sub>(6)</sub> = 61.97, <i>p</i> < 0.05) and drying method (<i>F</i> <sub>(2)</sub> = 65.38, <i>p</i> < 0.05) on the self-heating of the pellets. The results from the multiple regression analysis further showed that both the raw material type and pellet moisture content significantly influenced the temperature increase, with strong correlations observed for pellets produced using low-temperature drying (<i>F</i> <sub>(3, 14)</sub> = 83.52, multiple <i>R</i><sup>2</sup> = 0.95, <i>p</i> < 0.05), and medium temperature drying (<i>F</i> <sub>(3, 13)</sub> = 62.05, multiple <i>R</i><sup>2</sup> = 0.93, <i>p</i> < 0.05). The pellets produced from fresh mature wood sawdust were found to be more prone to self-heating and off-gassing while steam drying the sawdust at high temperature and pressure led to a significant reduction in heat and gas generation across all materials. The heightened self-heating and off-gassing in mature wood pellet can be attributed to a higher proportion of sapwood in the raw material. The probable explanations to the observed differences are in line with biological mechanisms for self-heating and off-gassing, as well as the chemical oxidation of fatty and resin acids.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1832 - 1842"},"PeriodicalIF":3.1,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12155-024-10736-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140116114","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}

引用次数: 0

Enhancing High-Solid Corn Cob Hydrolysis via Mixing Optimization Strategies 通过混合优化策略加强高固玉米芯水解作用

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-11 DOI: 10.1007/s12155-024-10740-9

Yafei Zhu, Kanghong Wang, Chaozhong Xu, Jia Ouyang, Xiaoli Gu

{"title":"Enhancing High-Solid Corn Cob Hydrolysis via Mixing Optimization Strategies","authors":"Yafei Zhu, Kanghong Wang, Chaozhong Xu, Jia Ouyang, Xiaoli Gu","doi":"10.1007/s12155-024-10740-9","DOIUrl":"10.1007/s12155-024-10740-9","url":null,"abstract":"<div><p>To enhance cellulose hydrolysis under high solid loadings, increasing the mixing intensity is often necessary, but this can lead to heightened product inhibition. In this work, the effect of mixing on high-solid cellulose hydrolysis was investigated. Through response surface optimization experiments, the optimal mixing intensities for 15%, 25%, and 35% (w/v) cellulose hydrolysis were obtained under different levels of product inhibition. A combined mixing optimization strategy was developed for different solid concentrations, aiming to enhance both the glucose yield and the conversion rate of microcrystalline cellulose and corn cobs. After optimization, the hydrolysis of microcrystalline cellulose resulted in glucose concentrations of 85 g/L, 130 g/L, and 167 g/L, corresponding to maximal conversion enhancements of 23%, 13%, and 8.6%, respectively. Similarly, the hydrolysis of corn cobs achieved glucose concentrations of 81 g/L, 124.6 g/L, and 140 g/L, with maximal conversion improvements of 4%, 5%, and 13%. These results indicate that the optimized strategy can effectively improve the conversion rate of high-solid enzymatic hydrolysis of cellulose.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1460 - 1468"},"PeriodicalIF":3.1,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140099913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovative Strategy in the Production of Polysaccharides from Spirulina and Chlorella Grown in Seawater and Brackish Groundwater 利用海水和地下咸水中生长的螺旋藻和小球藻生产多糖的创新战略

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-11 DOI: 10.1007/s12155-024-10737-4

P. Q. M. Bezerra, S. G. Kuntzler, M. G. Morais, I. L. Nunes, J. A. V. Costa, C. Laroche

{"title":"Innovative Strategy in the Production of Polysaccharides from Spirulina and Chlorella Grown in Seawater and Brackish Groundwater","authors":"P. Q. M. Bezerra, S. G. Kuntzler, M. G. Morais, I. L. Nunes, J. A. V. Costa, C. Laroche","doi":"10.1007/s12155-024-10737-4","DOIUrl":"10.1007/s12155-024-10737-4","url":null,"abstract":"<div><p>There are no reports of production and characterization of polysaccharides in the genera <i>Chlorella</i> and <i>Spirulina</i> cultivated in seawater (SW) and brackish groundwater (BGW). Furthermore, there are few studies on the cultivation of these microalgae in seawater for this purpose. Therefore, the aim of the study was to evaluate the production and composition of polysaccharides in <i>Spirulina</i> sp. LEB 18 and <i>Chlorella fusca</i> LEB 111 grown in seawater and brackish groundwater, with and without nutrient supplementation. In this study, 100% SW and 100% BGW were used as nutrient sources and supplemented with different concentrations of nitrogen, phosphorus, iron, and EDTA sources that make up the Zarrouk/BG-11 culture media. Cultivating <i>Chlorella fusca</i> LEB 111 in SW, without the addition of nutrients, resulted in an approximately 23% increase in starch production (g/g). The cultivation of <i>Spirulina</i> sp. LEB 18 in SW and BGW, without the addition of nutrients, showed an increase in glycogen concentrations (50.5 and 40.75 g/100 g<sub>biomass</sub>, respectively) and highest levels of exopolysaccharides (0.34 and 0.50 g/100 g<sub>biomass</sub>, respectively) compared to the control. Moreover, exopolysaccharides compositional analysis has shown an increase in glucose content with salinity, and a decrease in xylose and glucuronic acid. This cultivation strategy demonstrates the viability of utilizing SW and BGW as alternatives to freshwater culture medium for microalgae that have high nutritional requirements, with the potential to produce exopolysaccharides.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1876 - 1884"},"PeriodicalIF":3.1,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140099918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomass Production of the Poplar Clone OP42 During the Second Rotation Plantation–The Effects of Four Thinning Treatments 第二轮种植期间杨树克隆 OP42 的生物量生产--四次疏伐处理的影响

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-02 DOI: 10.1007/s12155-024-10730-x

Tetiana Svystun, Henrik Böhlenius

{"title":"Biomass Production of the Poplar Clone OP42 During the Second Rotation Plantation–The Effects of Four Thinning Treatments","authors":"Tetiana Svystun, Henrik Böhlenius","doi":"10.1007/s12155-024-10730-x","DOIUrl":"10.1007/s12155-024-10730-x","url":null,"abstract":"<div><p>Poplar (<i>Populus</i> species and their hybrids) plantations can produce large amounts of biomass on agricultural land during the first rotation. However, there is limited knowledge regarding plantation re-establishment through re-sprouting (second rotation) after harvest, stand management options for such plantations, and biomass production during rotation length up to 20 years. In this study, we analysed biomass production responses to thinning treatments in an 18-year-old second rotation poplar plantation in Southern Sweden. The first rotation plantation was established with clone OP42 (<i>Populus maximowiczii</i> A. Henry <i>× P. trichocarpa</i> Torr. and Gray). The thinning experiment was conducted seven years after the first rotation harvest, comprising four treatments: unthinned – 6000 stems ha<sup>−1</sup>, light thinning – 3000 stems ha<sup>−1</sup>, medium thinning – 1100 stems ha<sup>−1</sup>, and heavy thinning – 550 stems ha<sup>−1</sup>. Eleven years after thinning, standing volume/biomass reached 484 m<sup>3</sup> ha<sup>−1</sup> (162 Mg DM ha<sup>−1</sup>) in the unthinned and medium thinning plots, 443 m<sup>3</sup> ha<sup>−1</sup> (148 Mg DM ha<sup>−1</sup>) in lightly and 338 m<sup>3</sup> ha<sup>−1</sup> (113 Mg DM ha<sup>−1</sup>) in heavily thinned plots. The mean annual increment was not different among the unthinned, light, and medium thinnings, 26 m<sup>3</sup> ha<sup>−1</sup> yr<sup>−1</sup> (9 Mg DM ha<sup>−1</sup> yr<sup>−1</sup>). The total production, including living, dead and removed trees, was highest following the medium thinning, 695 m<sup>3</sup> ha<sup>−1</sup> (233 Mg DM ha<sup>−1</sup>). Gradual self-thinning in the unthinned and lightly thinned plots was increased by a drought period. Overall, this study suggests that the second rotation of poplar plantations has high biomass production and provides an alternative to planting after harvest.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1425 - 1435"},"PeriodicalIF":3.1,"publicationDate":"2024-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12155-024-10730-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140017486","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}

引用次数: 0

Dual-Acidity Catalysts for Alkyl Levulinate Synthesis from Biomass Carbohydrates: A Review 从生物质碳水化合物合成丙酮酸烷基酯的双酸催化剂：综述

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-01 DOI: 10.1007/s12155-024-10726-7

Kirrthana Krishnasamy, Mohd Asmadi, Muzakkir Mohammad Zainol, Nor Aishah Saidina Amin, Zaki Yamani Zakaria, Sureena Binti Abdullah

{"title":"Dual-Acidity Catalysts for Alkyl Levulinate Synthesis from Biomass Carbohydrates: A Review","authors":"Kirrthana Krishnasamy, Mohd Asmadi, Muzakkir Mohammad Zainol, Nor Aishah Saidina Amin, Zaki Yamani Zakaria, Sureena Binti Abdullah","doi":"10.1007/s12155-024-10726-7","DOIUrl":"10.1007/s12155-024-10726-7","url":null,"abstract":"<div><p>To combat the fast-degrading environment in this era, efforts are being made to consider biomass as feedstock for the production of biofuels and biofuel additives. Alkyl levulinates (AL), a good biofuel additive, exhibit excellent performance in improving the flow properties of biofuels. The growing market value of AL makes it highly desirable for large-scale productions. Unfortunately, the highly complex structure of biomass often hinders its conversion to AL, limiting its production. Thus, finding solutions to achieve highly efficient biomass conversion to AL is crucial. Catalyst dual-acidity is important in determining conversion effectiveness. The applications of AL, the roles of the catalyst acidic type in facilitating biomass carbohydrates conversions to AL, the types of catalysts employed and their impact, the prominence of the catalyst dual acidity, and the effect of reaction conditions on the conversion process are discussed. Dual-acidity Brønsted-Lewis catalyst enhances the AL yields and selectivity from carbohydrate conversion. Dual-acidity catalysts in the form of homogenous and heterogenous exhibited several advantages and disadvantages, which are compared in terms of catalytic performance and cost-effectiveness. Carbon-based catalysts are suggested as the prominent choice for large-scale AL production from carbohydrates. The outcome of this review will provide insights into the advancements in AL production from biomass carbohydrates.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 2","pages":"790 - 815"},"PeriodicalIF":3.1,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140003022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0