BioEnergy Research最新文献_第9页

Bioethanol Production from Paper Sludge by Subcritical Water Pretreatment and Semi-simultaneous Saccharification and Fermentation 通过亚临界水预处理和半同步糖化发酵从造纸污泥中生产生物乙醇

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-19 DOI: 10.1007/s12155-024-10755-2

Idzumi Okajima, Masato Muto, Shingo Morimoto, Kazuki Nauchi, Yuta Kodama, Enoch Y. Park, Takeshi Sako

{"title":"Bioethanol Production from Paper Sludge by Subcritical Water Pretreatment and Semi-simultaneous Saccharification and Fermentation","authors":"Idzumi Okajima, Masato Muto, Shingo Morimoto, Kazuki Nauchi, Yuta Kodama, Enoch Y. Park, Takeshi Sako","doi":"10.1007/s12155-024-10755-2","DOIUrl":"10.1007/s12155-024-10755-2","url":null,"abstract":"<div><p>Paper sludge (PS) from paper mills has a significant potential for bioethanol production. In this study, waste-paper-containing PS is used as the raw material for bioethanol production because the annual waste paper utilization rate has increased globally. Although PS does not require delignification, the antiseptics and deinking agents in waste paper-containing PS inhibit enzymatic reactions such as saccharification and fermentation. Their removal is important, but it has not yet been reported. Using subcritical water pretreatment, the selective decomposition of enzyme inhibitors in PS is examined without the generation of other enzyme inhibitors. The optimum pretreatment conditions are identified as 240 °C, 3.3 MPa, 3 min, and pH 4.5. Glucose was obtained in 71% yield from pretreated 5 wt% PS using cellulase, which is 5.5 times higher than that from unpretreated PS. This is because the reactivity of the pretreated PS increases with increasing surface area of the cellulose fibers, and the cellulase inhibitors are decomposed by subcritical water. Next, semi-simultaneous saccharification and fermentation treatments are performed to produce bioethanol from waste-paper-containing PS. The bioethanol yield based on cellulose after 96 h is 68% for PS pretreated with subcritical water, whereas the bioethanol yield is 6% for unpretreated PS. Therefore, subcritical water pretreatment increases the bioethanol yield by 11 times. The proposed method may enable the use of large amounts of PS as ethanol feedstock in future.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1662 - 1673"},"PeriodicalIF":3.1,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140627390","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

Anaerobic Digestion Enhancement of Brewery Sludge Assisted by Exogenous Hydrogen 外源氢气辅助啤酒厂污泥的厌氧消化强化作用

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-19 DOI: 10.1007/s12155-024-10758-z

Shiyue Liu, Xingdi Ma, Sue Yao, Xingyun Zhu, Yongguang Ma, Zhiqiang Chen, Jiyan Liang

{"title":"Anaerobic Digestion Enhancement of Brewery Sludge Assisted by Exogenous Hydrogen","authors":"Shiyue Liu, Xingdi Ma, Sue Yao, Xingyun Zhu, Yongguang Ma, Zhiqiang Chen, Jiyan Liang","doi":"10.1007/s12155-024-10758-z","DOIUrl":"10.1007/s12155-024-10758-z","url":null,"abstract":"<div><p>The purification of biogas as a product of anaerobic digestion has gradually become a research focus. In situ hydrogen-assisted biogas purification is an effective way to enhance the reaction rate, but the solubility and mass transfer efficiency of hydrogen are the difficulties that constrain the technology. Thus, four continuous hydrogen injection modes M1: 1 mL/min, M2: 2 mL/min, M3: 5 mL/min, and M4: 10 mL/min and two intermittent hydrogen injection modes A: 4 mL/min ( interval 20 min ) and B: 6 mL/min ( interval 40 min ) were designed to explore the effect of different hydrogen injection modes on in situ biogas upgrading of upflow anaerobic sludge bed (UASB) in the research. The results showed that the methane production showed a trend of increasing first and then decreasing in continuous hydrogenation experiment. The CH<sub>4</sub> production reached its peak at 86.2% in the M2 stage. In the two batch hydrogenation tests, group A showed better hydrogenation effect with a CH<sub>4</sub> production of about 92%, which was 4% higher than that of group B. The hydrogenotrophic methanogens (HMs) in group A archaea community were more effectively enriched, with an abundance of 52.83% of <i>Methanobacterium</i>. The results illustrate that proper hydrogen injection can enhance anaerobic digestion and promote biogas purification, and the effect of short-term intermittent hydrogen injection is more significant.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1943 - 1952"},"PeriodicalIF":3.1,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140627424","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

The Assessment of the Operational Performance of a Dry Anaerobic Reactor of Cambuci Husks to Bioenergy Potential and Biorefinery Integration 评估干式厌氧反应器的生物能源和生物精炼一体化潜力

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-17 DOI: 10.1007/s12155-024-10759-y

Luana R. R. Fröner-Lacerda, Vinícius F. Lacerda, Larissa C. Ampese, Henrique D. D. Ziero, Montserrat Pérez, Tânia Forster-Carneiro

{"title":"The Assessment of the Operational Performance of a Dry Anaerobic Reactor of Cambuci Husks to Bioenergy Potential and Biorefinery Integration","authors":"Luana R. R. Fröner-Lacerda, Vinícius F. Lacerda, Larissa C. Ampese, Henrique D. D. Ziero, Montserrat Pérez, Tânia Forster-Carneiro","doi":"10.1007/s12155-024-10759-y","DOIUrl":"10.1007/s12155-024-10759-y","url":null,"abstract":"<div><p>Anaerobic digestion plays a significant role in obtaining renewable energy through biogas production, reducing greenhouse gas emissions, helping with waste management, and bringing economic and social benefits. This work aims to examine approaches for the treatment and use of cambuci bagasse, identifying typical problems and proposing solutions concerning the application of the technique, control of operational parameters, management in dry regime conditions, optimization of efficiency, and increased productivity, using anaerobic digestion as a fundamental and central technology. The results showed the potential of electric energy and heat that could be generated by burning the biomass in a CHP system. Also, they presented the respective avoided greenhouse gas emissions in situations where biogas is applied to replace conventional heat or electricity sources. The biogas average production ratio was 102.69 m³/ton of cambuci by-product with a methane composition of around 60% in the 24th to 30th days. The experimental data obtained was subjected to calculations that indicate an electric generation of 202.98 kWh/ton of cambuci biomass and heat generation of 913.40 MJ/ton of cambuci biomass. In this theoretical scenario, for each ton of cambuci, it is possible to produce 913.4 MJ of thermal energy and 202.98 kWh of electric energy, considering the biogas burning into a CHP system. In the analysis of types of substrates regarding growth capacity, it was concluded that the substrate with a 30% dilution of the digested end was the one that showed the best growth of the cultivar’s stem, obtaining a CEC of 9.1516 mol/g.</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":"1375 - 1385"},"PeriodicalIF":3.1,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609034","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

Zero-Waste Bioenergy to Lower Energy Transition Risks in Indonesia — A Circular Economy Practice on Methane Capture in Biogas Production from POME 零废弃生物能源降低印度尼西亚能源转型风险--利用 POME 生产沼气过程中的甲烷捕获的循环经济实践

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-16 DOI: 10.1007/s12155-024-10754-3

Arnita Rishanty, Maxensius Tri Sambodo, Mesnan Silalahi, Erliza Hambali

{"title":"Zero-Waste Bioenergy to Lower Energy Transition Risks in Indonesia — A Circular Economy Practice on Methane Capture in Biogas Production from POME","authors":"Arnita Rishanty, Maxensius Tri Sambodo, Mesnan Silalahi, Erliza Hambali","doi":"10.1007/s12155-024-10754-3","DOIUrl":"10.1007/s12155-024-10754-3","url":null,"abstract":"<div><p>Driven by the urgent need to address climate change, Indonesia, as the world’s largest palm oil producer, faces the challenge of ensuring the sustainability of this industry. This study addresses a critical gap in knowledge by examining the technological advancements in methane capture for bioenergy from palm oil mill effluent (POME), exploring business development applications, and assessing the potential role of methane capture in advancing Indonesia’s Enhanced Nationally Determined Contribution (NDC) targets. Employing both quantitative and qualitative methodologies, the study reveals three key findings. Firstly, a systematic literature review highlights a dearth of research on the social and economic aspects of utilizing biomethane gas, particularly in modeling contexts. Secondly, through case studies, the utilization of methane gas as an energy source is shown to significantly reduce electricity expenditures, diminish reliance on fossil fuels, mitigate carbon emissions, and expand access to clean energy for both companies and households. Thirdly, the scenario of converting POME waste into energy can help to reach the target on carbon emissions, but it depends on the level of waste utilization and capacity factor. By repurposing palm oil industry waste for clean energy production instead of expanding land use, which poses risks to biodiversity, Indonesia can mitigate the challenges of the energy transition and foster a more sustainable future.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1930 - 1942"},"PeriodicalIF":3.1,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140613964","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

Integration of Solid-State Anaerobic Digestion and Hydrothermal Carbonization 固态厌氧消化与热液碳化的整合

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-15 DOI: 10.1007/s12155-024-10752-5

Sasithorn Saipa, Boonya Charnnok, Saoharit Nitayavardhana, Alissara Reungsang, Sumate Chaiprapat, Chayanon Sawatdeenarunat

{"title":"Integration of Solid-State Anaerobic Digestion and Hydrothermal Carbonization","authors":"Sasithorn Saipa, Boonya Charnnok, Saoharit Nitayavardhana, Alissara Reungsang, Sumate Chaiprapat, Chayanon Sawatdeenarunat","doi":"10.1007/s12155-024-10752-5","DOIUrl":"10.1007/s12155-024-10752-5","url":null,"abstract":"<div><p>The purpose of this research was to develop an integrated biorefinery process of solid-state anaerobic digestion (SS-AD) and hydrothermal carbonization (HTC) for the co-production of methane and hydrochar using elephant dung (ED) as substrate. With a leachate recirculation rate of 4 times/day, the SS-AD presented the highest cumulative methane yield of 83.2 ± 1.7 NmL/g volatile solid (VS)<sub>added</sub> and VS removal efficiency of 53.9 ± 0.3%. In subsequent HTC, the maximum higher heating value (HHV) of 10,078.5 ± 288.5 MJ/ton dry wt. was achieved for the digested ED without leachate recirculation under HTC temperature of 170 °C. In addition, the maximum mass and energy yields were 76.3 ± 0.8% and 84.1 ± 0.3%, respectively. The produced hydrochar had higher HHV compared to the raw digestate. Moreover, the HHV of the hydrochar was higher, and ash content was identical to conventional coal (lignite). An assessment of a full-scale elephant-sanctuary waste management scheme integrating SS-AD and HTC indicates that more than 10,078.5 ± 288.5 MJ of energy and 563.0 ± 5.2 kg dry weight of hydrochar could be recovered per ton dry weight of ED. The developed elephant dung management platform could enhance energy yield from ED while addressing environmental issues.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1918 - 1929"},"PeriodicalIF":3.1,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590341","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

Eucalyptus grandis Forestry Residue Valorization: Distinct and Integrated Pretreatment Methods for Enhanced Xylooligosaccharide Production 桉树林业残留物的价值评估：提高低聚木糖生产的独特综合预处理方法

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-13 DOI: 10.1007/s12155-024-10748-1

Jenniffer Andrea Tamayo-Peña, Laura Plazas Tovar, Lívia Caldas Alencar Pacheco, Adilson Roberto Gonçalves, Telma Texeira Franco

{"title":"Eucalyptus grandis Forestry Residue Valorization: Distinct and Integrated Pretreatment Methods for Enhanced Xylooligosaccharide Production","authors":"Jenniffer Andrea Tamayo-Peña, Laura Plazas Tovar, Lívia Caldas Alencar Pacheco, Adilson Roberto Gonçalves, Telma Texeira Franco","doi":"10.1007/s12155-024-10748-1","DOIUrl":"10.1007/s12155-024-10748-1","url":null,"abstract":"<div><p>Eucalyptus branches and bark represent highly abundant and available feedstocks with great potential for obtaining bio-based products. Distinct and integrated pretreatment fractionation strategies for eucalyptus branches and bark were performed for the efficient production of xylooligosaccharides (XOS). By combining pretreatments, a high yield of XOS was obtained from eucalyptus branches and bark. The branches and bark were presoaked in 8% (w/w) sodium hydroxide at 60 °C for 30 min to provide a deacetylation effect. The residues were then hydrothermally treated. The findings revealed that 4.64% of XOS originated from the bark and 6.19% from eucalyptus branches. It has been demonstrated that xylan may be selectively depolymerized during pretreatment by preventing excessive hydrolysis through the use of deacetylation in the first phase of the process. More XOS was produced using hydrothermal treatment, yielding 8.00% (w/w) in the branches and 5.12% in the bark. A significant amount of XOS with DP 2–5 might be obtained in certain experiments, up to 60%, but the most abundant XOS are usually those with DP > 5 (approximately 80% of all XOS). This work provides new insights into the effective generation of XOS under relatively mild conditions by overcoming the recalcitrant structure of eucalyptus branches and bark, representing a noteworthy advancement towards forestry leftover valorization.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1503 - 1521"},"PeriodicalIF":3.1,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12155-024-10748-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590693","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

Cultivation of Microalgae in Liquid Digestate to Remove Nutrients and Organic Contaminants 在液态消化液中培养微藻以去除营养物质和有机污染物

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-13 DOI: 10.1007/s12155-024-10753-4

Ewelina Sobolewska, Sebastian Borowski, Paulina Nowicka-Krawczyk

{"title":"Cultivation of Microalgae in Liquid Digestate to Remove Nutrients and Organic Contaminants","authors":"Ewelina Sobolewska, Sebastian Borowski, Paulina Nowicka-Krawczyk","doi":"10.1007/s12155-024-10753-4","DOIUrl":"10.1007/s12155-024-10753-4","url":null,"abstract":"<div><p>The goal of this research was to assess the efficiency of the liquid digestate treatment conducted with algal, environmental isolates illuminated entirely with sunlight. The photobioreactor was exposed to natural conditions and evaluated based on the reduction of chemical oxygen demand (COD), nitrogen compounds, and soluble phosphates. Microalgal and bacterial communities growing during the treatment process were studied. A high removal rate of soluble COD (= 91%) and nutrients (= 86%) was achieved. The average concentrations of nitrogen, phosphates, and COD in the reactor effluent were 95 mgN/L, 49 mg/L, and 735 mg O<sub>2</sub>/L, respectively. The overall algae-bacteria biomass productivity of 22 mg/L/d, calculated on the total suspended solids (TSS) basis, was recorded. The microbial analysis revealed the dominance of <i>Tetradesmus obliquus</i> followed by <i>Microglena</i> sp. in the first 14 weeks of the experiment. At the end of the experimental run, <i>Chlorella sorokiniana</i> cells appeared as a result of illumination intensity changes. The dominating bacteria belonged to Firmicutes (26.31%), Patescibacteria (17.38%), and Actinobacteriota (14.86%) and could have been responsible for the transformation of nitrogen and oxidation of organic contaminants. The research demonstrated that natural sunlight can successfully be used for efficient liquid digestate treatment with the algae-bacterial community.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1843 - 1855"},"PeriodicalIF":3.1,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12155-024-10753-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590412","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

Differentiating Bagasse and Straw as Feedstocks for Sugarcane Cellulosic Ethanol: Insights from Pilot-Scale Pretreatments 甘蔗渣和秸秆作为甘蔗纤维素乙醇原料的区别：中试预处理的启示

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-13 DOI: 10.1007/s12155-024-10751-6

Viviane M. Nascimento, Simone C. Nakanishi, Carlos Alberto de Oliveira Filho, Absai da Conceição Gomes, Aline Machado de Castro, Ana Paula Rodrigues Torres, Christian Alejandro Queipo, Danuza Nogueira Moyses, Felipe de Oliveira Brito, Luiz Fernando Martins Bandeira, Carlos Driemeier

{"title":"Differentiating Bagasse and Straw as Feedstocks for Sugarcane Cellulosic Ethanol: Insights from Pilot-Scale Pretreatments","authors":"Viviane M. Nascimento, Simone C. Nakanishi, Carlos Alberto de Oliveira Filho, Absai da Conceição Gomes, Aline Machado de Castro, Ana Paula Rodrigues Torres, Christian Alejandro Queipo, Danuza Nogueira Moyses, Felipe de Oliveira Brito, Luiz Fernando Martins Bandeira, Carlos Driemeier","doi":"10.1007/s12155-024-10751-6","DOIUrl":"10.1007/s12155-024-10751-6","url":null,"abstract":"<div><p>Bagasse and straw are the two feedstocks used to produce cellulosic ethanol from sugarcane. Although this technology is advancing commercially, the differentiation between bagasse and straw remains elusive. This work investigates bagasse and straw supply, conditioning, and pretreatment in a pilot-scale steam-explosion continuous reactor (~ 10 kg/h feed) to illuminate the critical feedstock differences for process scale-up. Evaluating biomass across four sequential harvest seasons (2018–2021) shows that straw supplied in bales requires extra conditioning to reduce mineral matter and particle size before feeding into the reactor. Moreover, straw composition is more variable and consistently has lower contents of glucan (35.6–38.8%) and carbohydrate potential (glucose + xylose, 649–704 kg/dry tonne) compared to bagasse (40.8–42.9%; 735–760 kg/dry tonne). Biomass pretreatments without (190 °C, 5–15 min) and with sulfuric acid catalyst (149–170 °C; 5–15 min; 0.5–5.12%, m/m) show that straw differs from bagasse by presenting a higher acid neutralization capacity and about 5% of labile glucans. These results suggest that straw crushing and aqueous pre-extraction are promising strategies to reduce the dissimilarities with bagasse, thus facilitating the development of feedstock-agnostic biorefining.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1533 - 1542"},"PeriodicalIF":3.1,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590420","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

Synergistic of Magnetite Nanoparticles and Alkaline Pretreatment on Biogas Yield from Anaerobic Codigestion of Municipal Waste and Sewage Sludge 磁铁矿纳米颗粒和碱性预处理对城市垃圾和污水污泥厌氧消化产生的沼气产量的协同作用

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-04-02 DOI: 10.1007/s12155-024-10742-7

Mansour Ahmadi-Pirlou, Amirhamzeh Farajollahi, AhmadReza Rahmati

{"title":"Synergistic of Magnetite Nanoparticles and Alkaline Pretreatment on Biogas Yield from Anaerobic Codigestion of Municipal Waste and Sewage Sludge","authors":"Mansour Ahmadi-Pirlou, Amirhamzeh Farajollahi, AhmadReza Rahmati","doi":"10.1007/s12155-024-10742-7","DOIUrl":"10.1007/s12155-024-10742-7","url":null,"abstract":"<div><p>One of the most important problems and the main obstacle of this process is the transformation of the complex structure of lignocellulose. One of the ways to break the lignocellulosic structure is to use suitable pretreatment compounds and nanoparticles with appropriate concentration. For this purpose, the synergistic effect of 6%NaOH pretreatment with different magnetite nanoparticle (MNP) concentrations was assessed for maximizing the biogas production. In this study, the optimal mixing ratio of MSW and SS codigestion was determined from our previous studies (MSW:SS 60:40). Application of the 6%NaOH pretreatment alone increased biogas and methane production by 24.6 and 35.4%, respectively, compared to the control. Also, the 6%NaOH pretreatment alone elevated cellulose by 85% while reducing lignin and hemicellulose by 64 and 33%, respectively. The greatest biogas and methane production was obtained in the reactor of 6%NaOH with an MNP concentration of 110 ppm, experiencing an 86 and 162% increase compared to the control. The greatest reduction in total solids and volatile solids was also obtained in this digestor by 76.6 and 79%, respectively, compared to the control reactor.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1908 - 1917"},"PeriodicalIF":3.1,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590411","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

Influence of Ensiling Time and Elephant Grass Silage Alkaline Pretreatment in Anaerobic Co-digestion with Vinasse for Methane Production 饲养时间和象草青贮碱性预处理对厌氧协同消化沼气生产的影响

IF 3.1 3区工程技术

BioEnergy Research Pub Date : 2024-03-26 DOI: 10.1007/s12155-024-10746-3

Heloisa Vital Domingos, Thayse Farias de Barros, Taciana Carneiro Chaves, Fernanda Santana Peiter, Dayana de Gusmão Coêlho, Anderson Carlos Marafon, Eduardo Lucena Cavalcante de Amorim

{"title":"Influence of Ensiling Time and Elephant Grass Silage Alkaline Pretreatment in Anaerobic Co-digestion with Vinasse for Methane Production","authors":"Heloisa Vital Domingos, Thayse Farias de Barros, Taciana Carneiro Chaves, Fernanda Santana Peiter, Dayana de Gusmão Coêlho, Anderson Carlos Marafon, Eduardo Lucena Cavalcante de Amorim","doi":"10.1007/s12155-024-10746-3","DOIUrl":"10.1007/s12155-024-10746-3","url":null,"abstract":"<div><p>This study investigated the anaerobic co-digestion of sugarcane vinasse (V) and elephant grass silage (S) to produce methane. Box-Behnken experimental design was applied to verify the statistical effects of the elephant grass ensiling time (40, 80 and 120 days), alkaline pretreatment of elephant grass silage (0.5, 2.25 and 4.00% w/v NaOH) and S:V mixture ratio (25:75, 50:50 and 75:25) on the methane yield. The results showed that the ensiling process resulted in the low degradation of lignocellulosic substances, emphasizing the need for pretreatment using more efficient techniques, such as thermo-alkaline, to improve the breakdown of elephant grass fibres. COD removals varied between 35 and 85%, and carbohydrate consumptions ranged from 63 to 72%, with the higher efficiencies for both parameters occurring in the reactors with lower percentages of silage. Cumulative methane yield ranged from 190.77 mLCH<sub>4</sub>/gVS (in the reactor with S:V of 75:25, 0.50% w/v NaOH and 80 ensiling days) to 1729.80 mLCH<sub>4</sub>/gVS (in the reactor with S:V of 25:75, 2.25% w/v NaOH and 120 ensiling days). According to ANOVA, S:V ratio was the only variable with a significant effect (<i>p</i> < 0.05) on cumulative methane yield. Therefore, the findings indicate that the relative composition of substrates within the mixture exerted the most significant influence on the process, underscoring the critical role of vinasse as a co-substrate in enhancing methane production despite silage pretreatments.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1895 - 1907"},"PeriodicalIF":3.1,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140301725","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