Biofuels Bioproducts & Biorefining-Biofpr最新文献_第5页

Biomass to biofuel: Palm kernel shells as catalyst supports for enhanced biodiesel production 生物质转化为生物燃料：将棕榈仁壳作为催化剂载体，促进生物柴油生产

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-09-18 DOI: 10.1002/bbb.2683

Mohammad Aliff Shakir, Mardiana Idayu Ahmad, Fatin Zafirah Mansur, H.P.S. Abdul Khalil

{"title":"Biomass to biofuel: Palm kernel shells as catalyst supports for enhanced biodiesel production","authors":"Mohammad Aliff Shakir, Mardiana Idayu Ahmad, Fatin Zafirah Mansur, H.P.S. Abdul Khalil","doi":"10.1002/bbb.2683","DOIUrl":"https://doi.org/10.1002/bbb.2683","url":null,"abstract":"The use of agricultural biomass fibers, specifically palm kernel shell (PKS), has significant potential to enhance biodiesel production. This approach overcomes economic barriers and contributes to sustainability by repurposing agricultural biomass. This study explores the effectiveness of PKS as a cost-effective and sustainable catalyst support. Palm kernel shell was chosen due to its high carbon content, low ash presence, and abundance as a byproduct in the palm oil industry, making it an economically viable and environmentally friendly option. In this study, an optimized activated carbon from PKS biomass was fabricated as catalyst support to enhance biodiesel production efficiency. Using response surface methodology (RSM), the PKS was impregnated with phosphoric acid and synthesized at various acid concentrations, impregnation times, and activation times to enhance porosity for catalytic support capabilities. The experimental design included a central composite design (CCD) to vary these factors systematically and determine their optimal levels. Scanning electron microscopy (SEM) and Brunauer–Emmett–Teller (BET) analysis revealed significant development of porosity, affirming the efficient activation process. Energy dispersive X-ray (EDX) analysis confirmed phosphorus incorporation during activation, indicating the formation of an intricate pore structure. Fourier transform infrared (FTIR) spectroscopy highlighted the presence of functional groups pertinent to the biodiesel reaction process. The transesterification process employing PKS as a catalyst with different biobased feedstocks, such as waste frying oils from corn, palm, and sunflower, led to biodiesel yields of varying efficiencies. Notably, corn oil had the highest yield at 94.92%. This study highlights the potential of PKS as a biobased catalyst support and contributes to the broader biorefinery concept by integrating biomass utilization into renewable fuel production.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"2038-2052"},"PeriodicalIF":3.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Integrating biochar production in biorefineries: towards a sustainable future and circular economy 将生物炭生产纳入生物精炼厂：实现可持续未来和循环经济

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-09-17 DOI: 10.1002/bbb.2679

Dixita Chettri, Deepjyoti Boro, Manisha Chirania, Anil Kumar Verma

{"title":"Integrating biochar production in biorefineries: towards a sustainable future and circular economy","authors":"Dixita Chettri, Deepjyoti Boro, Manisha Chirania, Anil Kumar Verma","doi":"10.1002/bbb.2679","DOIUrl":"https://doi.org/10.1002/bbb.2679","url":null,"abstract":"Biochar, a carbon-rich material derived from organic biomass under low-O2 conditions, has gained importance due to its role in mitigating climate change by sequestering carbon. It can be used as an alternative energy source and has applications in nutrient cycling, improving soil properties, and removing heavy metals and organic pollutants, thus contributing to sustainable agriculture and environmental remediation. In the face of alarming climate change, rising energy demand, and increasing pollution, the integration of biochar production into biorefineries is an important strategy to promote a sustainable and circular economy. Adopting a holistic approach to biomass utilization by developing strategies to maximize biochar production along with the production of other value-added products while improving its quality can increase biorefineries' overall sustainability and efficiency. Fine-tuning the biorefinery process from feedstock selection to co-production, optimizing pyrolysis conditions, and integrating it with other technologies can help to achieve this goal while generating zero waste and diversified revenues. With the biochar market growing exponentially, further research into the long-term impact of biochar on carbon sequestration and its application in the environment is the next step.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"2156-2176"},"PeriodicalIF":3.2,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Deep-eutectic-solvent-assisted hydrothermal carbonization of sewage sludge for green wood bioadhesive production 污水污泥的深共晶溶剂辅助水热碳化用于生产绿色木材生物粘合剂

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-09-17 DOI: 10.1002/bbb.2676

Zhi-Xiang Xu, Rui Dou, Yi Tan, Huan-Ran Xiong, Yong-Xing Chen, Li-Jian Leng, Mikhail Vlaskin, Sameh M. Osman, Rafael Luque

{"title":"Deep-eutectic-solvent-assisted hydrothermal carbonization of sewage sludge for green wood bioadhesive production","authors":"Zhi-Xiang Xu, Rui Dou, Yi Tan, Huan-Ran Xiong, Yong-Xing Chen, Li-Jian Leng, Mikhail Vlaskin, Sameh M. Osman, Rafael Luque","doi":"10.1002/bbb.2676","DOIUrl":"https://doi.org/10.1002/bbb.2676","url":null,"abstract":"This study reports the use of deep-eutectic-solvent- (DES-) assisted hydrothermal carbonization (HTC) to disrupt the floc structure of sewage sludge (SS) for deep carbonization, with the resulting hydrochars employed in the preparation of formaldehyde-free plywood bioadhesives. Sewage-sludge-based bioadhesive exhibits an excellent wet shear strength, complying with the requirements of Chinese national standard GB/T 9846–2015 (≥0.7 MPa). The molecular weight of proteins and the formation of covalent bonds via dehydration have a notable role in improving adhesive performance (wet shear strength). The Maillard reaction is a key reaction during HTC to destroy the secondary structure of proteins, resulting in the release of more OH and NH2. The main reaction during hot-press treatment is dehydration. High ash content in bioadhesives improves flame resistance potential, particularly on addition of DES. A plausible mechanism is proposed for this. This work provides a new method for the valorization of SS-derived hydrochars and contributes to the development of greener formaldehyde-free wood bioadhesives.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"1978-1993"},"PeriodicalIF":3.2,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Catalytic evaluation of eggshell-based calcium methoxide over Al2O3 for biodiesel generation from waste cooking oil 蛋壳基甲醇钙在 Al2O3 上催化废弃食用油生成生物柴油的评估

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-09-17 DOI: 10.1002/bbb.2684

Fernando Camacho-Valencia, Gabriela Vázquez-Rodríguez, J. Andrés Tavizón-Pozos

{"title":"Catalytic evaluation of eggshell-based calcium methoxide over Al2O3 for biodiesel generation from waste cooking oil","authors":"Fernando Camacho-Valencia, Gabriela Vázquez-Rodríguez, J. Andrés Tavizón-Pozos","doi":"10.1002/bbb.2684","DOIUrl":"https://doi.org/10.1002/bbb.2684","url":null,"abstract":"Shell-derived materials are promising heterogeneous catalysts for biodiesel production due to their nontoxic and renewable nature, but they have the disadvantage of being highly leachable. To overcome this issue, Ca(OCH3)2 formed through the reaction of CaO with methanol, and supported in turn on Al2O3 is proposed as a catalytic system for the transesterification of fresh soybean oil and waste cooking oil (WCO). First, catalysts with several Al/Ca molar ratios (0.2, 0.5, and 0.8-AC), as well as their precursors (CaO and Al2O3) alone, were tested at 60 °C, catalyst loading 6% wt, methanol-to-oil molar ratio (MOR) 10, for 1 h for fresh oil, and 3 h for WCO. The 0.2-AC catalyst generated the highest biodiesel yield for both oils. The optimum operating conditions for WCO transesterification, determined by using a univariable approach, were 60 °C, 9 wt% catalyst loading, MOR of 12.5, and a reaction time of 3 h. These improved conditions led to yields higher than 90% for pure CaO and the 0.2, 0.5, and 0.8-AC catalysts. The density, kinematic viscosity, and refractive index of the biodiesel obtained were measured.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"1873-1879"},"PeriodicalIF":3.2,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Chemical characterization of heat-treated kraft lignin after fractionation with organic solvents and pH effect 有机溶剂分馏后热处理牛皮纸木质素的化学特性及 pH 值的影响

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-09-16 DOI: 10.1002/bbb.2680

Hígor Brandão de Paula, Caio César Zandonadi Nunes, Iara Fontes Demuner, Ana Márcia Macedo Ladeira Carvalho

{"title":"Chemical characterization of heat-treated kraft lignin after fractionation with organic solvents and pH effect","authors":"Hígor Brandão de Paula, Caio César Zandonadi Nunes, Iara Fontes Demuner, Ana Márcia Macedo Ladeira Carvalho","doi":"10.1002/bbb.2680","DOIUrl":"https://doi.org/10.1002/bbb.2680","url":null,"abstract":"Lignin, the main source of renewable aromatics, has a complex structure, high polydispersity, and low reactivity, which hinders its large-scale use. This study aims to improve lignin reactivity through heat treatment combined with fractionation by organic solvents or the pH effect. Heat treatment of commercial hardwood black liquor was performed at 225 °C for 150 min. The samples were then fractionated either by using organic solvents (ethyl acetate, ethanol, methanol, and acetone) or by lowering pH using hydrochloric acid (HCl) (pH values 1, 3, 5, 7, and 9). The fractionation was carried out in one step and in sequential mode. The fractionated samples were characterized chemically by the content of acid-soluble and acid-insoluble lignin, carbohydrates, ash, inorganic compounds (metals), elemental analysis, and by pyrolysis-gas chromatography–mass spectrometry (Py-GC–MS). The highest mass yields were obtained using the one-step mode for both fractionations, with yields as high as 53.3% for organic solvents and 47.8% for the pH effect. Solvent fractionation reduced ash content by up to 75.4% and increased calorific value, carbon content, and total lignin content. Fractionation by pH effect showed an ash reduction of up to 55.9% and an increase in calorific value and carbon content of up to 8.7 MJ kg−1 and 49.7%, respectively. The Hansen solubility parameters were also calculated to address lignin's solubility in each of the tested solvents. These findings indicate that combining heat treatment and fractionation techniques improves lignin's chemical properties significantly, making it a more viable raw material for industrial use. This approach supports the circular economy by transforming lignin into a high-value product, thereby promoting sustainable and efficient resource utilization across industries.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"2015-2037"},"PeriodicalIF":3.2,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Comparative analysis of the combustion and emission characteristics of biojet and conventional Jet A-1 fuel: a review 生物喷气机与传统喷气机 A-1 燃料的燃烧和排放特性对比分析：综述

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-09-16 DOI: 10.1002/bbb.2682

Abdulwasiu Muhammed Raji, Brady Manescau, Khaled Chetehouna, Ludovic Lamoot, Raphael Ogabi

{"title":"Comparative analysis of the combustion and emission characteristics of biojet and conventional Jet A-1 fuel: a review","authors":"Abdulwasiu Muhammed Raji, Brady Manescau, Khaled Chetehouna, Ludovic Lamoot, Raphael Ogabi","doi":"10.1002/bbb.2682","DOIUrl":"https://doi.org/10.1002/bbb.2682","url":null,"abstract":"Conventional jet fuels derived from fossil sources contribute to greenhouse gas emissions and air pollution, leading to climate change. Recent studies have shown that biobased jet fuels from different feedstocks offer a more sustainable alternative to conventional fuels as they are derived from renewable biomass, reducing greenhouse gas emissions. The major feedstocks reviewed are jatropha curcas, camelina, karanja oil, waste cooking oil, and municipal solid waste. They offer diverse benefits for sustainable aviation fuel development. As a comparative analysis, this review examined jet fuel characteristics based on their physicochemical properties, namely energy content, viscosity, calorific value, cetane number, and freezing and flash points. The objective was to understand the influence of the properties on performance evaluation, environmental impact, and combustion characteristics. The properties of biojet fuels are compared with their fossil counterparts to validate their suitability as renewable alternatives and their benefits in terms of emissions reduction and engine performance. Biojet fuels perform better in terms of lower sulfur content, lower soot content, and a lower freezing point, their aromatic content, and their high cetane number. This study enhances the understanding of biojet fuels and their quality, and supports the development of sustainable fuel options. Overall, adherence to the American Society for Testing and Materials (ASTM) D7566-18 standard is crucial for the acceptance and integration of biojet fuels into the aviation sector. Future research should explore feedstocks such as wood biomass, wastepaper, and agricultural residues for biojet fuels. It should also investigate the combustion and emission characteristics of biosourced aviation fuel at higher blending ratios (>50% by volume) with fossil Jet A-1.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"2177-2195"},"PeriodicalIF":3.2,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

From organic waste to renewable energy: response surface methodology approach for optimized biodiesel production from palm weevil larvae (Rhynchophorus ferrugineus) 从有机废物到可再生能源：利用棕榈象鼻虫幼虫（Rhynchophorus ferrugineus）优化生物柴油生产的响应面方法学方法

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-09-05 DOI: 10.1002/bbb.2669

Azemo Folepe Esther Arnaude, Vanessa Albuquerque de Mescouto, Geraldo Narciso da Rocha Filho, Luís Adriano Santos do Nascimento, Carlos Emmerson Ferreira da Costa, Julius K. Tangka

{"title":"From organic waste to renewable energy: response surface methodology approach for optimized biodiesel production from palm weevil larvae (Rhynchophorus ferrugineus)","authors":"Azemo Folepe Esther Arnaude, Vanessa Albuquerque de Mescouto, Geraldo Narciso da Rocha Filho, Luís Adriano Santos do Nascimento, Carlos Emmerson Ferreira da Costa, Julius K. Tangka","doi":"10.1002/bbb.2669","DOIUrl":"https://doi.org/10.1002/bbb.2669","url":null,"abstract":"This study aimed to improve the production of biodiesel from white palm larvae (WPL) and to evaluate its potential as a feedstock. The larvae were grown using kitchen and palm waste for 21 days, and the crude oil was then extracted. The extracted oil was analyzed for its physicochemical properties and fatty acid composition. The analysis found that the feedstock oil contained a high quantity of monounsaturated fatty acids, indicating its suitability for biodiesel production. To optimize the production process, response surface methodology (RSM) was employed. A central composite design was used to study four operating conditions: temperature, methanol-to-oil mole ratio, esterification time, and catalyst loading for esterification, as well as transesterification time and catalyst concentration. The best conditions for esterification were a methanol-to-oil ratio of 18:1, a temperature of 70 °C, 120 min of reaction time, and a 4% H2SO4 catalyst. For transesterification, the optimal conditions were a methanol-to-oil ratio of 10:1, a temperature of 65 °C, 90 min of reaction time, and a 2% KOH catalyst concentration. The experimental data fit well with models, with significant P-values and high R2 values. The biodiesel produced under the optimized conditions met the fuel quality standards set by Brazilian, European, and American standards. In conclusion, this study successfully optimized the biodiesel production process from white palm larvae and confirmed its suitability as a feedstock. The feedstock oil had properties that were suitable for biodiesel production, and the optimized conditions resulted in biodiesel that met fuel-quality standards.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"1952-1965"},"PeriodicalIF":3.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Production of sweet potato distilled beverage: Economic evaluation via enzymatic and acid hydrolysis 生产甘薯蒸馏饮料：通过酶水解和酸水解进行经济评估

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-08-30 DOI: 10.1002/bbb.2673

Débora Gonçalves Carvalho, Luciane Ferreira Trierweiler, Jorge Otávio Trierweiler

{"title":"Production of sweet potato distilled beverage: Economic evaluation via enzymatic and acid hydrolysis","authors":"Débora Gonçalves Carvalho, Luciane Ferreira Trierweiler, Jorge Otávio Trierweiler","doi":"10.1002/bbb.2673","DOIUrl":"https://doi.org/10.1002/bbb.2673","url":null,"abstract":"This study aimed to assess the feasibility of utilizing sweet potato waste for distilled beverage production in two process scenarios: (i) acid hydrolysis and (ii) enzymatic hydrolysis. Laboratory experiments were conducted using in natura sweet potato waste and the data obtained were used to design a production system capable of producing 1000 L of distillate per day. Net present value (NPV), internal rate of return (IRR), and discounted payback indicators were used for economic analysis, with a minimum attractiveness rate (MARR) of 15%. The initial investment for the projects was BRL 1 139 610.86 (USD 223 146.80) for enzymatic hydrolysis and BRL 1 314 824.54 (USD 257 455.36) for acid hydrolysis. Packaging costs were identified as the greatest expenses in the process. Assuming a selling price of BRL 14.50 (USD 2.84), the enzymatic hydrolysis process demonstrated an NPV of BRL 4 792 520.77 (USD 938 421.92) and IRR of 83.39%, and the acid hydrolysis process showed an NPV of BRL 2 191 636.78 (USD 429 143.68) and IRR of 42.49%. Consequently, establishing a production plant for distilled beverages proved to be more economically attractive when employing the enzymatic hydrolysis process and fermentation simultaneously, resulting in a return on investment within 1.46 years of operation. Upon scrutinizing the gain matrix, it became apparent that critical factors with the potential to affect the project's feasibility detrimentally, if increased, included the cost of acquiring packaging, the final volumetric fraction of the distilled beverage, and the tax rate. Nevertheless, an upturn in the selling price of the beverage and a process improvement yield both have the potential to underpin the project effectively.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"1880-1891"},"PeriodicalIF":3.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Evaluation of oil transesterification in a packed-bed reactor containing lipase immobilized in starch–alginate jet cutting beads 在含有固定在淀粉-海藻酸盐喷射切割珠中的脂肪酶的填料床反应器中评估油的酯交换反应

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-08-29 DOI: 10.1002/bbb.2678

Francisco Lucas Chaves Almeida, Klicia Araujo Sampaio, Ana Silvia Prata, Marcus Bruno Soares Forte

{"title":"Evaluation of oil transesterification in a packed-bed reactor containing lipase immobilized in starch–alginate jet cutting beads","authors":"Francisco Lucas Chaves Almeida, Klicia Araujo Sampaio, Ana Silvia Prata, Marcus Bruno Soares Forte","doi":"10.1002/bbb.2678","DOIUrl":"https://doi.org/10.1002/bbb.2678","url":null,"abstract":"There has been a growing interest in ecofriendly enzymatic processes. However, enzyme solubility limits the application of many biocatalysts in continuous systems, requiring the development of cost-effective strategies for enzyme immobilization. Based on this premise, this study investigated the application of lipase immobilized in starch–alginate beads for oil transesterification in a tubular reactor. An economical derivative was produced by immobilizing Eversa Transform 2.0 in 50:50 (w/w) starch–alginate beads using the jet-cutting technique. The biocatalyst had a particle size of about 500 μm and activity of 138.67 ± 18.53 U g−1. X-ray photoelectron spectroscopy showed nitrogen content ranging from 6.38% to 7.29%, with uniform distribution of lipase throughout the beads. Nitrogen isotherms were characteristic of mesoporous materials, with an average pore diameter of 48.09 Å and low surface area (0.69 m2 g−1). A face-centered central composite design was used to study soybean oil transesterification. In the best four runs, the process achieved a mean triglyceride conversion of 45%. High ester productivity levels (2.05 × 10−2% ester g−1 biocatalyst min−1 or 1.5 × 10−4% ester U−1 min−1) were obtained. Biocatalyst reuse led to a twofold increase in ester concentration (14.57% vs 7.7%). These findings confirm the successful development of a low-cost biocatalyst suitable for use in continuous reactions.","PeriodicalId":55380,"journal":{"name":"Biofuels Bioproducts & Biorefining-Biofpr","volume":"18 6","pages":"2005-2014"},"PeriodicalIF":3.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142588246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 surrogate fuel emulating the physical and chemical properties of aviation biofuels 模拟航空生物燃料物理和化学特性的代用燃料

IF 3.2 4区生物学

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-08-26 DOI: 10.1002/bbb.2675

Qingmiao Ding, Changhong Xiong, Yanyu Cui, Fang Zhao, Hailong Li

引用次数: 0