BioEnergy Research最新文献_第3页

Biodiesel Production from Spent Coffee Grounds by Using Ethanolic Extraction and Supercritical Transesterification 利用乙醇萃取和超临界酯交换反应从废弃咖啡渣中生产生物柴油

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-07-05 DOI: 10.1007/s12155-024-10782-z

Wirasinee Supang, Somkiat Ngamprasertsith, Winatta Sakdasri, Ruengwit Sawangkeaw

{"title":"Biodiesel Production from Spent Coffee Grounds by Using Ethanolic Extraction and Supercritical Transesterification","authors":"Wirasinee Supang, Somkiat Ngamprasertsith, Winatta Sakdasri, Ruengwit Sawangkeaw","doi":"10.1007/s12155-024-10782-z","DOIUrl":"10.1007/s12155-024-10782-z","url":null,"abstract":"<div><p>This work presents a way to use ethanol and spent coffee grounds (SCG) as feedstocks for biodiesel production to solve ethanol overproduction in Thailand and biodiesel feedstock shortage problems together. Waste coffee oil (SCGO) was ethanolic extracted from SCG; then, ethanol-SCGO mixture was transesterified in supercritical condition without ethanol removal. The ethanolic extraction curves of SCG at a temperature range of 50–70 °C were constructed. Transesterification experiments were studied in a batch reactor and a continuous reactor at various temperatures (275–350 °C) and reaction time (5–40 min) under 15.0 MPa. The molar ratio of ethanol-oil mixture was set at 30:1. The highest ester content of 88.37 ± 3.00 wt% was found in biodiesel obtained at a temperature of 275 °C and a reaction time of 40 min in a batch reactor. Furthermore, excess temperature (< 300 °C) and reaction time (< 20 min) induced thermal degradation and promoted the loss of ethyl linoleate. For continuous reactor, the maximum ester content of 83.38 ± 5.86 wt% was observed at 325 °C and 29.4 min of residence time. Unlike in batch reactors, thermal degradation of ethyl linoleate was not observed in a continuous reactor. The results showed that ethanolic extraction and supercritical transesterification are alternative ways to produce biodiesel from SCG without removing extractant and using catalyst. From a prospective point of view, techno-economic analysis (TEA) and life-cycle assessment (LCA) of invented process should be conducted to ensure profitability and environmental benefits, respectively.</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 4","pages":"2429 - 2439"},"PeriodicalIF":3.1,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141549456","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

Ecosystem Carbon and Nutrient Balances in Short-Rotation Hybrid Aspen Coppice Under Different Thinning Methods 不同疏伐方法下短旋杂交杨树林的生态系统碳和养分平衡

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-06-29 DOI: 10.1007/s12155-024-10780-1

Reimo Lutter, Heiki Hepner, Arvo Tullus, Hyungwoo Lim, Tea Tullus, Eele Õunapuu-Pikas, Reeno Sopp, Marju Kaivapalu, Kristjan Täll, Katri Ots, Hardi Tullus

{"title":"Ecosystem Carbon and Nutrient Balances in Short-Rotation Hybrid Aspen Coppice Under Different Thinning Methods","authors":"Reimo Lutter, Heiki Hepner, Arvo Tullus, Hyungwoo Lim, Tea Tullus, Eele Õunapuu-Pikas, Reeno Sopp, Marju Kaivapalu, Kristjan Täll, Katri Ots, Hardi Tullus","doi":"10.1007/s12155-024-10780-1","DOIUrl":"10.1007/s12155-024-10780-1","url":null,"abstract":"<div><p>Coppice plantations have gained a high interest for biofuel production and carbon uptake in short rotation cycles. There is a limited knowledge how such intensive coppice management affects soil fertility and nutrients supply to maintain carbon sink. We studied ecosystem carbon and nutrients balance and allocation during a 5-year period in hybrid aspen coppice under different thinning methods in hemiboreal Estonia. The benchmark value for the changes was defined before the coppice emerged after the clear-cut of the previously planted hybrid aspen plantation. The studied systematical thinning treatments were as follows: corridor thinning with removal of 67% of the trees (CT), cross-corridor thinning with removal of 89% of the trees (CCT), and unthinned (UT) coppice. The UT and CT treatments resulted in a positive carbon balance at the ecosystem level. In all treatments, a decrease of soil acidity, organic C, total N, K, Mg and Mn contents, and an increase of soil Cu and B contents were observed in the 0–20-cm deep layer. The concentrations of leaf N, P, and K were higher in UT than in the two thinning treatments, indicating that the aspens had not entirely recovered from the changed root to shoot ratio 2 years after thinning, whereas the leaf mass fraction of medium- and small-sized trees had already increased. Bioenergy harvest from the UT site in a 5-year rotation would cause 5–18% removal of NPK from the total ecosystem pool. Overall, hybrid aspen coppice showed positive ecosystem carbon balance after the first 5-year period; however, further monitoring of soil properties is needed as we found decrease of soil organic C and nutrients concentrations in short term.</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 4","pages":"2141 - 2157"},"PeriodicalIF":3.1,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12155-024-10780-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510183","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

Anaerobic Co-digestion of Expired Dairy Products and Synthetic Domestic Wastewater: Effect on Methane Potential in Batch Reactors 过期乳制品和合成生活废水的厌氧协同消化：对间歇式反应器中甲烷潜力的影响

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-06-22 DOI: 10.1007/s12155-024-10778-9

Danieli Fernanda Canaver Marin, Caroline Varella Rodrigues, Romário Pereira de Carvalho Júnior, Sandra Imaculada Maintinguer

{"title":"Anaerobic Co-digestion of Expired Dairy Products and Synthetic Domestic Wastewater: Effect on Methane Potential in Batch Reactors","authors":"Danieli Fernanda Canaver Marin, Caroline Varella Rodrigues, Romário Pereira de Carvalho Júnior, Sandra Imaculada Maintinguer","doi":"10.1007/s12155-024-10778-9","DOIUrl":"10.1007/s12155-024-10778-9","url":null,"abstract":"<div><p>Substantial amounts of expired dairy products (EDP) are generated due to their high perishability. These wastes are rich in organic matter, and their landfill disposal negatively impacts the environment. An alternative to reducing and recovering this waste would be to use it as a substrate in anaerobic digestion (AD) to produce biogas. This study investigated methane (CH<sub>4</sub>) production using different concentrations of EDP co-digested with synthetic domestic wastewater (SDW). Five anaerobic batch reactors (1000 mL) were assembled with different concentrations of EDP in SDW (500 mL working volume), namely (1) 0%, (2) 5.0%, (3) 7.5%, (4) 10.0%, and (5) 15.0% (v/v). COD removals were 81%, 84%, 80%, 89%, and 14% for assays 1 to 5, respectively. The cumulative CH<sub>4</sub> productions were (mL/L) 717, 3354, 5327, 6584, and 1156 for assays 1 to 5, respectively. Assay 5 (15% EDP) was inhibited by volatile fatty acid (VFA) accumulation. However, assays 2, 3, and 4 (with 5.0–10.0% EDP) showed high CH<sub>4</sub> yields (mLCH<sub>4</sub>/gVS<sub>add</sub>) of 319, 333, and 317, respectively, demonstrating the feasibility of anaerobic co-digestion of EDP with SDW. In assays 3 and 4, a similar archaeal community structure was observed, dominated by the genera <i>Methanosaeta</i>, <i>Methanolinea, Methanoregula</i>, and <i>Methanobacterium</i>. In assay 2, the archaeal community demonstrated lower dominance due to insufficient substrate adaptation. This study confirms the viability of using EDP in AD systems to generate CH<sub>4</sub>, suggesting future sustainable applications for this residue.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 4","pages":"2450 - 2461"},"PeriodicalIF":3.1,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510180","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

Advancements in Valorization of Food Waste Resources by Microalgae for Sustainable Biorefinery Production 利用微藻对厨余资源进行价值评估以促进可持续生物精炼生产的研究进展

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-06-20 DOI: 10.1007/s12155-024-10777-w

Nang Yee Mon Htoo, Chayakorn Pumas, Sirasit Srinuanpan, Phei Er Kee, John Chi-Wei Lan, Jun Wei Lim, Sudhir K. Upadhyay, Kuan Shiong Khoo

{"title":"Advancements in Valorization of Food Waste Resources by Microalgae for Sustainable Biorefinery Production","authors":"Nang Yee Mon Htoo, Chayakorn Pumas, Sirasit Srinuanpan, Phei Er Kee, John Chi-Wei Lan, Jun Wei Lim, Sudhir K. Upadhyay, Kuan Shiong Khoo","doi":"10.1007/s12155-024-10777-w","DOIUrl":"10.1007/s12155-024-10777-w","url":null,"abstract":"<div><p>The increasing global population has led to a significant accumulation of food waste. It is important to focus on reducing food waste instead of disposal methods like landfilling and incineration, which have severe environmental impacts. Upcycling food waste has emerged as an effective strategy for repurposing discarded food into higher-value products. However, concerns about food safety and public acceptance of products directly produced from food waste persist. Consequently, there is growing interest in utilizing food waste rich in moisture and biodegradable organic compounds as a potential medium for cultivating microalgae. This review article examines the utilization of food waste as a culture medium for microalgae cultivation and the methods for treating food waste to enhance its nutrient content. Additionally, it discusses the influence of nutrients such as carbon, nitrogen, and phosphorus on microalgae growth and external factors such as pH and light intensity. The article also addresses the innovation of the food supply chain from environmental, social, and economic perspective, along with food safety and public acceptability concerns. Furthermore, it explores the legislative issues surrounding products derived from food waste and the end use of microalgae biomass produced from food waste. Overall, this review provides insight into the potential of microalgae cultivation using food waste, serving as a platform towards the realization of a circular bioeconomy.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 4","pages":"2062 - 2081"},"PeriodicalIF":3.1,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510181","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

Economical and Facile Synthesis of Monolignols 经济简便地合成单木质素

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-06-19 DOI: 10.1007/s12155-024-10779-8

Alexis Dell, Mallorie Keith, Emily Y. Zhu, James Pence, Qizheng Duan, Sabiha Sultana, Yimin Zhu

引用次数: 0

Production of Ethanol from Green Coconut Fiber by Integrating Cloud Point Extraction and Simultaneous Saccharification and Fermentation 利用云点萃取和同步糖化发酵技术从绿椰子纤维中生产乙醇

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-06-17 DOI: 10.1007/s12155-024-10776-x

Carlos Eduardo de Araújo Padilha, Habila Yusuf Thomas, Mariza Gabryella Brito dos Santos, José Dário Silva Fidelis, Lucas Felipe Simões Silva, Jadna Lúcia de Freitas Silva, Gleyson Batista de Oliveira, Karina Soares do Bonfim, Everaldo Silvino dos Santos, Domingos Fabiano de Santana Souza

{"title":"Production of Ethanol from Green Coconut Fiber by Integrating Cloud Point Extraction and Simultaneous Saccharification and Fermentation","authors":"Carlos Eduardo de Araújo Padilha, Habila Yusuf Thomas, Mariza Gabryella Brito dos Santos, José Dário Silva Fidelis, Lucas Felipe Simões Silva, Jadna Lúcia de Freitas Silva, Gleyson Batista de Oliveira, Karina Soares do Bonfim, Everaldo Silvino dos Santos, Domingos Fabiano de Santana Souza","doi":"10.1007/s12155-024-10776-x","DOIUrl":"10.1007/s12155-024-10776-x","url":null,"abstract":"<div><p>The fermentation of whole slurry favors the increase in ethanol titers and minimizes water consumption. However, inhibitors accumulate in the liquid fraction pretreatment, reducing fermentation performance. In order to find a way out, the present study proposed an integration between cloud point extraction (CPE) and ethanol production using fiber of green coconut (GCF) as substrate. Triton X-114 was used to detoxify the liquid fraction from acid pretreatment, and optimal operating conditions were obtained by mathematical modeling. The effects of the residual surfactant from the dilute phase of CPE were analyzed in cellulase adsorption tests, enzymatic hydrolysis, and fermentation of acid-pretreated GCF. CPE promoted high removal of furans (86.23–100%) and phenolic compounds (22.79–75.15%), while the sugars migrated to the dilute phase. A neural network model coupled with a genetic algorithm obtained an optimal condition of 2.38% Triton X-114, temperature of 42 °C, pH of 4.3, and 0.55% sodium chloride. The incubation with the CPE dilute phase increased the residual activity from 25.1 to 50.1% and increased the cellulosic conversion from 32.28 to 41.15%. CPE-saccharification and simultaneous fermentation integration boosted the ethanol production to 12.40 g/L, while the untreated whole slurry reached only 6.29 g/L. Because of these results, the CPE emerges as a promising alternative to favor the full use of sugars from lignocellulosic biomass.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 4","pages":"2268 - 2281"},"PeriodicalIF":3.1,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510184","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

Single-Pass, Single-Stream Harvest of Corn Grain and Stover: a Comparison of Two Harvest Methods 玉米粒和秸秆的单程单流收割：两种收割方法的比较

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-06-13 DOI: 10.1007/s12155-024-10775-y

A.B. Hemmelgarn, K.J. Shinners, A.J. Timm, M.F. Digman

{"title":"Single-Pass, Single-Stream Harvest of Corn Grain and Stover: a Comparison of Two Harvest Methods","authors":"A.B. Hemmelgarn, K.J. Shinners, A.J. Timm, M.F. Digman","doi":"10.1007/s12155-024-10775-y","DOIUrl":"10.1007/s12155-024-10775-y","url":null,"abstract":"<div><p>The single-pass, split-stream harvest of corn grain and stover has been extensively studied. Challenges for these systems include the logistics and economics of handling separate grain and stover streams. Single-pass, single-stream processes have been explored using a self-propelled forage harvester to collect whole-plant corn as a biomass feedstock. However, due to the processing done by the self-propelled forage harvester, a significant portion of the grain fraction is damaged during harvest limiting its marketability. To evaluate an alternative system, a combine harvester was modified with a rear blower to collect corn stover, facilitating the collection of the grain and stover fractions into the same wagon, creating an aggregate, whole-plant corn material. Utilizing this system, a plot study was conducted to compare it to a self-propelled forage harvester. Parameters studied for system performance were yield, grain damage, and geometric mean particle size. While the combine system reduced grain damage (<i>p</i> < 0.001) by 18 percentage points compared to the self-propelled forage harvester and had a similar whole plant particle size (<i>p</i> = 0.11), it collected 1.86 Mg DM ha<sup>−1</sup> less biomass (<i>p</i> < 0.001). The combine harvester with a stover collection system provides a method to collect whole-plant corn as a biomass feedstock that maintains a large portion of the grain integrity but decreases dry matter yield.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 4","pages":"2158 - 2163"},"PeriodicalIF":3.1,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141348046","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

Evaluation of the Energy Potential of Agro-industrial Waste from Mangifera indica L. in Zamora, Mexico: Perspectives for the Management of Solid and Liquid Biofuels 墨西哥萨莫拉州芒果树农工业废弃物的能源潜力评估：固体和液体生物燃料的管理前景

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-05-24 DOI: 10.1007/s12155-024-10774-z

Luis Bernardo López-Sosa, Gustavo Alberto Santibáñez-Rocha, Mario Morales-Máximo, Ricardo González-Carabes, José Guadalupe Rutiaga-Quiñones, Carlos Alberto García Bustamante, Luis Fernando Pintor-Ibarra, Ismael Santos Ramos, Cecilia Irene Villaseñor Reyes, María del Carmen Rodríguez Magallón, Saúl Leonardo Hernández Trujillo

{"title":"Evaluation of the Energy Potential of Agro-industrial Waste from Mangifera indica L. in Zamora, Mexico: Perspectives for the Management of Solid and Liquid Biofuels","authors":"Luis Bernardo López-Sosa, Gustavo Alberto Santibáñez-Rocha, Mario Morales-Máximo, Ricardo González-Carabes, José Guadalupe Rutiaga-Quiñones, Carlos Alberto García Bustamante, Luis Fernando Pintor-Ibarra, Ismael Santos Ramos, Cecilia Irene Villaseñor Reyes, María del Carmen Rodríguez Magallón, Saúl Leonardo Hernández Trujillo","doi":"10.1007/s12155-024-10774-z","DOIUrl":"10.1007/s12155-024-10774-z","url":null,"abstract":"<div><p>A study of the energy potential from agro-industrial waste of <i>Mangifera indica</i> L. in the city of Zamora, Michoacán is presented, considering its use through solid biofuels. This research is composed of three stages: (a) the qualitative and quantitative diagnosis of the waste disposal of <i>M. indica</i>, spatiotemporally (b) the physicochemical characterization of the waste collected from 14 processing companies using characterization techniques, as well as proximal analysis of the moisture content, ash, volatiles, fixed carbon, and calorific value, and (c) estimation of the energy potential to spatially and temporally define the final energy disposition and possible use of the analyzed waste. The results show the ash content of mango residues below 3.5%, while the volatile material was 82.9%, the fixed carbon content was below 17%, and the polymeric compounds showed 27.24% cellulose, 10.46% for hemicellulose, and for lignin 5.78%. The presence of carbon was also identified in the order of 44.61%, hydrogen in 6.53%, oxygen in 48.11%, nitrogen of 0.74%, and the sulfur recorded was below the range of 0.01%. The calorific value was estimated from 17.5 to 19.28 MJ/kg; the available energy potential on the order of 0.5 TJ/day for 4 months. This proposal not only shows a case study of the bioenergy potential available, but it can also encourage addressing future research related to the use and valuation of agro-industrial waste, which, like in the Zamora region, there are many more in Mexico, and they are so diverse and productive that the energy potential is relevant.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 4","pages":"2127 - 2140"},"PeriodicalIF":3.1,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141147671","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

Machine Learning Approach for Predicting Hydrothermal Liquefaction of Lignocellulosic Biomass 预测木质纤维素生物质热液液化的机器学习方法

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-05-24 DOI: 10.1007/s12155-024-10773-0

Tossapon Katongtung, Sanphawat Phromphithak, Thossaporn Onsree, Nakorn Tippayawong

{"title":"Machine Learning Approach for Predicting Hydrothermal Liquefaction of Lignocellulosic Biomass","authors":"Tossapon Katongtung, Sanphawat Phromphithak, Thossaporn Onsree, Nakorn Tippayawong","doi":"10.1007/s12155-024-10773-0","DOIUrl":"10.1007/s12155-024-10773-0","url":null,"abstract":"<div><p>Hydrothermal liquefaction (HTL) of lignocellulosic biomass has gained attention as a promising technology for the production of biofuels and other value-added products. HTL process optimization is complex and involves various parameters such as reaction time, temperature, and pressure. In recent years, machine learning (ML) approaches have been adopted as a tool to optimize and predict the HTL process performance. The purposes of this study were to investigate the ML-based prediction of bio-crude yield (BCY) and their higher heating values (HHVs) from HTL of lignocellulosic biomass and to elucidate the relationship of features affecting the output of interest. Pre-processing and normalization were applied to a dataset of 215 data points with 17 input features. Feature selection using the Shapley value method identified key predictors. ML models including multilayer perceptron, kernel ridge regression, random forest, and extreme gradient boosting (XGB) were trained and evaluated. XGB algorithm shows superior performance in predicting the yields and their calorific values to within 5–8% of experimental values. Temperature was the most influential feature for both BCY and HHV prediction accounting for about 30%, followed by other feedstock and operational characteristics. In addition, a user interface was presented for ease of use in the ML modeling.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 4","pages":"2246 - 2258"},"PeriodicalIF":3.1,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141100496","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

Fermentation of Rice Straw and Its Hydrolysate with Sludge for Ethanol Production 用污泥发酵稻草及其水解物以生产乙醇

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-05-18 DOI: 10.1007/s12155-024-10771-2

Ji-Liang Lü, Zhen Wang, Min Tao, Han Zheng, Chao-Gang Lou, Shanshan Yang, Xianli Liu

{"title":"Fermentation of Rice Straw and Its Hydrolysate with Sludge for Ethanol Production","authors":"Ji-Liang Lü, Zhen Wang, Min Tao, Han Zheng, Chao-Gang Lou, Shanshan Yang, Xianli Liu","doi":"10.1007/s12155-024-10771-2","DOIUrl":"10.1007/s12155-024-10771-2","url":null,"abstract":"<div><p>Rice straw hydrolysate produced in rice straw pretreatment, comprising a lot of fermentable sugars, is generally released into the environment. This not only causes environment pollution but also wastes fermentable sugars from rice straw. To alleviate environment impact, maximize ethanol production from rice straw, and reduce the cost of ethanol production, rice straw hydrolysate and NaOH-pretreated rice straw were converted to ethanol using ethanol-type fermentation and simultaneous saccharification and fermentation (SSF) by sludge. Meanwhile, microbial community in sludge was analyzed to find the relationship between ethanol production and microbial community succession during ethanol-type fermentation and SSF. Under the optimal condition of the COD, pH and oxidation–reduction potential (ORP) value of rice straw hydrolysate with 6280.56 mg/L, 6.7, and − 42 mV, ethanol-type fermentation with the sludge of 15 g obtained the highest ethanol concentration (8.34 g/L) and the highest COD removal rate (54.83%). For SSF, the maximum ethanol concentration (3.75 g/L) produced by pretreated rice straw and sludge from ethanol-type fermentation with the sludge of 15 g was higher than that (2.61 g/L) generated by pretreated rice straw and sludge from ethanol-type fermentation with the sludge of 22.5 g. This indicated that sludge from ethanol-type fermentation with the sludge of 15 g more efficiently converted rice straw to ethanol than sludge from ethanol-type fermentation with the sludge of 22.5 g. Microbial community analysis suggested that ethanol production had a negative correlation with the relative abundance changes of Bacteroidetes, when the relative abundance of Firmicutes constantly rose in ethanol-type fermentation and SSF. This study provides a scientific basis for maximizing ethanol production from rice straw by microbial regulation in sludge, which could further reduce the cost of ethanol production.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 4","pages":"2259 - 2267"},"PeriodicalIF":3.1,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059862","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