Biomass Conversion and Biorefinery最新文献

{"title":"Simultaneous saccharification and fermentation using lignocellulolytic microorganisms and Zymomonas mobilis for bioethanol production from paddy straw","authors":"Keerthi Patel M,&nbsp;R. Muthuraju,&nbsp;Sathwik M N Raj,&nbsp;M. K. Murali,&nbsp;Nisarga S Gowda,&nbsp; Ashwini","doi":"10.1007/s13399-025-06764-6","DOIUrl":"10.1007/s13399-025-06764-6","url":null,"abstract":"<div><p>This study explores the optimization of bioethanol production from paddy straw using <i>Zymomonas mobilis</i> along with lignocellulolytic microorganisms such as, <i>Bacillus inaquosorum</i>, <i>Phanerochaete chrysosporium</i> and <i>Streptomyces viridosporus</i>. This research focused on thermochemical pretreatment methods like acid, alkali and hydrothermal processes to enhance the release of reducing sugars for fermentation. Most of the previous studies have focused on the use of purified enzymes for the release of reducing sugars from biomass, while this study intends to use the lignocellulolytic microorganisms as such. Physicochemical analysis of the paddy straw revealed a neutral detergent fiber (NDF) content of 71.5%, an acid detergent fiber (ADF) content of 51.2%, a bulk density of 0.16 g cc⁻¹ and a moisture content of 3%. Among the pretreatments, alkaline-assisted hydrothermal pretreatment resulted in the highest total reducing sugars (TRS) yield, reaching 2,695 µg g⁻¹ biomass after 3 h of incubation. Scanning electron microscopy (SEM) and fourier-transform infrared spectroscopy (FTIR) confirmed significant structural changes in the biomass, enhancing its enzyme accessibility. Simultaneous saccharification and fermentation (SSF) was employed to convert these sugars into ethanol. The highest ethanol yield of 2.12% was achieved using a microbial consortium of <i>Zymomonas mobilis</i> and lignocellulolytic organisms after 120 h of fermentation. These findings highlight the potential of paddy straw as a sustainable bioethanol feedstock, contributing to environmental sustainability and reducing reliance on fossil fuels.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23117 - 23125"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimation of specific surface area and higher heating value of biochar and activated carbon produced by pyrolysis and physico-chemically assisted pyrolysis of biomass using an artificial neural network (ANN)","authors":"Mamadou Saliou Balde,&nbsp;Rukiye Karakış,&nbsp;Ayten Ateş","doi":"10.1007/s13399-025-06728-w","DOIUrl":"10.1007/s13399-025-06728-w","url":null,"abstract":"<div><p>The physical and chemical activation of biomass prior to pyrolysis significantly affects the properties of the activated carbon produced. In this study, raw tea waste (TW) and hazelnut shells (HS) were used to produce biochar and activated carbon samples by pyrolysis at different pyrolysis temperatures with and without chemical and physical activation. Subsequently, an artificial neural network (ANN) was developed based on the pyrolysis conditions, proximate and elemental analyses of the biomass feedstocks and the obtained biochar and activated carbon to predict the higher heating value (HHV) and specific surface area (SSA) of the biochar. For this purpose, machine learning algorithms such as ANN, Gaussian process regression (GPR), regression trees (RT), and support vector machines (SVM) were compared to find the best-performing algorithm for the prediction of HHV and SSA of biochar. Algorithms based on ANNs performed better than SVM, RT, and GPR models, with higher regressions and lower prediction errors. The resilient backpropagation (RProp) algorithm proved to be the most suitable training algorithm as it provided satisfactory results with a low percentage of mean squared error (MSE) and mean absolute error (MAE). The ANN models showed moderate to strong performance in the tests, with correlation coefficient (R) values of 0.82 and 0.95, coefficient of determination (R²) values of 0.67 and 0.90, and low MAE and MSE, indicating reasonable prediction accuracy for HHV and SSA of the biochar. The energy efficiency of biochar produced with conventional pyrolysis ranged from 9.84% to 21.13%, while the energy efficiency of activated carbon ranged from 45.26% to 67.21%, with the maximum reached at 300 °C. Based on the results of the thermodynamic analysis, it was found that the energy and exergy yields of the biochar and activated carbon produced depend on the activation conditions and temperature.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23047 - 23070"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13399-025-06728-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extraction of silica and biochar from biomass waste for the synthesis of aerogel and its application for the removal of dye","authors":"Ashmita Samanta,&nbsp;Subhasis Ghosh,&nbsp;Papita Das","doi":"10.1007/s13399-025-06776-2","DOIUrl":"10.1007/s13399-025-06776-2","url":null,"abstract":"<div><p>Contamination o f wastewater is one of the rising global issues, and several studies are being conducted to perform efficient treatment processes with cost-effective methods. In this study, sugarcane bagasse was used as biomass to extract silica (Si) and biochar (BC) and was used further as fillers for aerogel formation with polyvinyl alcohol (PVA) polymer to eliminate Congo red dye from the solution. A batch study was conducted in each case, and the efficiency of dye removal, by different aerogel PVA, PVA-Si, and PVA-BC was studied. Experimental parameters were varied to analyze the effect of the various parameters in each case. The highest removal was 94.98% using PVA-Si aerogel at 300 min with 10 mg/L initial concentration of Congo red, pH 7, and temperature 30 ℃. The adsorption capacity of Congo red was 29.49 mg/g by PVA-Si aerogel. The characterization of the aerogel showed the occupancy of various functional groups, modification in crystallographic structure, and surface alteration of aerogels. The analysis for the study of kinetics exhibited that the process of adsorption fitted the pseudo-second-order reaction for all the aerogels and also the thermodynamics data demonstrated that the adsorption process was spontaneous and endothermic. Also, from the isotherm modeling, it was observed that the process best fitted with the Freundlich isotherm model.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23345 - 23363"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing pretreatment blanching process of browning, total phenol, and DPPH scavenging capacity in cocoa pod husk","authors":"Satria Bhirawa Anoraga,&nbsp;Rosnah Shamsudin,&nbsp;Muhammad Hazwan Hamzah,&nbsp;Suzannah Sharif,&nbsp;Arifin Dwi Saputro,&nbsp;Mohd Salahuddin Mohd Basri","doi":"10.1007/s13399-025-06756-6","DOIUrl":"10.1007/s13399-025-06756-6","url":null,"abstract":"<div><p>Blanching brightens cocoa pod husk (CPH) but causes leaching and loss of nutrients. This research aims to optimize blanching conditions, investigate the impacts of temperature and blanching time on browning index, DPPH scavenging capacity, and total phenol content, and compare blanching with steam blanching and nontreatment methods. Blanching parameters, including temperature (50 °C–90 °C) and time (3–15 min), were optimized through response surface methodology by using a central composite design (CCD). The optimum blanching conditions (90 °C and 12.5 min) generated a browning index of 11.23, total phenol content of 322.73 mg gallic acid equivalents (GAE)/g, and DPPH scavenging capacity of 127.92 mg Gallic acid equivalent antioxidant capacity (GAEAC)/g, resulting in a desirability value of 0.89. Blanching with hot water produced CPH powder with a low browning index and high water-holding and swelling capacities. CPH powder produced by hot-water blanching had higher total phenol content and DPPH scavenging capacity than that produced by steam blanching but had slightly lower total phenol content and DPPH scavenging capacity than untreated CPH powder because of leaching. These findings suggest that optimized blanching conditions can improve CPH's functional properties such as fiber content and DPPH scavenging capacity, supporting its potential as a fiber-rich food ingredient. Future studies should explore additional processing techniques to enhance nutrient retention and broaden its applications in functional food formulations.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23169 - 23183"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel and innovative technological trends in biomass volarisation","authors":"Nabisab Mujawar Mubarak,&nbsp;Saran Kumar,&nbsp;Vinayaka B. Shet","doi":"10.1007/s13399-025-06769-1","DOIUrl":"10.1007/s13399-025-06769-1","url":null,"abstract":"","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 :","pages":"8135 - 8135"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and characterization of activated charcoal adsorbent derived from oak for efficient removal of methylene blue: functionality vs surface area","authors":"Ali Bülbül,&nbsp;Ali Delibaş,&nbsp;Ramazan Coşkun","doi":"10.1007/s13399-025-06752-w","DOIUrl":"10.1007/s13399-025-06752-w","url":null,"abstract":"<div><p>With industrial growth, environmental and water pollution have become pressing issues, requiring effective treatment solutions. Adsorption is an economical and practical method for removing dyes from textile wastewater, making the choice of a sustainable, low-cost adsorbent crucial. Although it is clear that surface area is important in adsorption, the presence of functional groups that have adsorption ability is equally important. For this purpose, locally abundant oak-derived charcoal (MK) was selected. Due to its low adsorption capacity, the charcoal was activated using concentrated sulfuric acid at 150 °C with an acid-to-sample ratio of 5:1, producing activated charcoal (SMK). The adsorbent was characterized using SEM, BET, FTIR, Boehm titration, and pHpzc analyses. Methylene blue (MB), a cationic dye, was chosen as the target pollutant, and experiments were conducted to study the effects of solution pH, adsorbent dose, initial dye concentration, and temperature on MB removal. Isotherm and kinetic analyses showed that MB adsorption on SMK fits the Langmuir isotherm model, with an adsorption capacity of 370.85 mg/g, and follows a pseudo-second-order kinetic model. Thermodynamic analysis confirmed that the process is exothermic. While MK has a surface area of 76.8 m²/g but no affinity for dyes, SMK, with a surface area of 6.31 m²/g, was effective in MB removal, highlighting the importance of surface functionality. Therefore, SMK proved to be an efficient adsorbent for MB removal from water.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23227 - 23242"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13399-025-06752-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual-reflux pressure swing adsorption in biogas upgrading—a parametric optimization","authors":"Mohd Hardyianto Vai Bahrun,&nbsp;Awang Bono,&nbsp;Norasikin Othman,&nbsp;Muhammad Abbas Ahmad Zaini","doi":"10.1007/s13399-025-06727-x","DOIUrl":"10.1007/s13399-025-06727-x","url":null,"abstract":"<div><p>The efficient upgrading of biogas is critical for advancing renewable energy technologies, reducing greenhouse gas emissions, and enhancing the circular carbon economy. This study systematically investigates the application of dual-reflux pressure swing adsorption (DR-PSA) for biogas upgrading, enabling simultaneous enrichment of CH₄ and CO₂ to high purities. A two-bed, six-step P_HA (feed to high-pressure, <i>P</i>_<i>H</i>, and pressure reversal using heavy component, A) was analyzed using rigorous non-isothermal numerical simulations framework within the Aspen Adsorption software. To systematically enhance the process performance, a two-level fractional factorial design was employed to identify the most influential parameters, followed by the Box-Behnken design optimization to determine optimal operating conditions. The screening analysis identified the feed/light reflux (FE/LR) time, light reflux ratio, and bed column height as the most influential parameters governing separation efficiency. Under optimized conditions of FE/LR time of 49 s, light reflux ratio of 0.259, and bed column height of 1.97 m, the DR-PSA achieved a CH₄ purity of 91.69% in the light product and CO₂ purity of 89.36% in the heavy product, marking improvements of 15% and 19%, respectively, over the base case. Additionally, the optimized conditions demonstrated a bed productivity of 1.09 mol CH₄/h/kg silica gel and an energy-efficient cycle work of 56.25 kJ/mol CH₄ captured, highlighting its potential for scalable deployment. Compared to other PSA systems of similar purpose, the DR-PSA process exhibited comparable separation performance, operating as a single train process, with a moderate pressure ratio, and without vacuum operation, making it a promising alternative for sustainable and cost-effective biogas upgrading. This study represents the first systematic optimization of DR-PSA for biogas upgrading using a statistical design of experiments approach, offering a novel and practical pathway for enhancing renewable energy technologies.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"22987 - 23016"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of silver nanocoordination complex morpholine for the remediation of acid fuchsin dye and immobilization of Aspergillus sp. RL2Ct cutinase","authors":"Monika Bharti,&nbsp; Saruchi,&nbsp;Sonika Arti,&nbsp;Sabah Ansar,&nbsp;Vaneet Kumar","doi":"10.1007/s13399-025-06744-w","DOIUrl":"10.1007/s13399-025-06744-w","url":null,"abstract":"<div><p>This work describes the synthesis of a silver nanocoordination complex and capped silver nanoparticles (AgNPs). Several methods, such as field emission scanning electron microscopy (FESEM), dynamic light scattering (DLS), infrared spectroscopy (IR), powder X-ray diffraction (PXRD), and UV–Vis spectroscopy, were used to characterize the produced silver nanocoordination complex. With a maximum removal effectiveness of 96.9%, the complex demonstrated exceptional efficacy in eliminating the hazardous acid fuchsin dye. Furthermore, the <i>Aspergillus</i> sp. RL2Ct cutinase enzyme was immobilized using the coordination complex as a platform. As temperatures rose, it was found that the enzyme’s activity increased in both its free and immobilized forms. The free enzyme’s activity peaked at 30 °C at 1853 U/mg protein, whereas the total activity of the 1344 U/mg protein at 40 °C. The study also investigated the reusability of the AgNP-immobilized cutinase over 110th cycles of hydrolysis activity and found that it was very effective for its reuse about 110th cycle. Furthermore, it evaluated the storage stability of both free and immobilized enzymes, revealing that the immobilized enzymes exhibited greater stability over an extended period as compared to the free enzyme.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 12","pages":"18679 - 18693"},"PeriodicalIF":4.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utilization of Lantana Camara, an invasive and hepatotoxic plant: a kinetic, thermodynamic and experimental studies on its gasification to hydrogen rich producer gas","authors":"Rose Havilah Pulla,&nbsp;Gopalakrishnan Govindasamy,&nbsp;Amit Kumar Sharma","doi":"10.1007/s13399-025-06747-7","DOIUrl":"10.1007/s13399-025-06747-7","url":null,"abstract":"","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"22941 - 22957"},"PeriodicalIF":4.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimized removal of cationic dye by using chemically activated and pyrolyzed carbon from date palm fiber","authors":"Wafa Tiaiba,&nbsp;Abdelbaki Reffas,&nbsp;Wiem Hamza,&nbsp;Achraf Ghorbal,&nbsp;Rim Ben Arfi","doi":"10.1007/s13399-025-06742-y","DOIUrl":"10.1007/s13399-025-06742-y","url":null,"abstract":"<div><p>This paper aims to manufacture a low-cost activated carbon (AC) from date palm fiber material via chemical activation with H₃PO₄. Various acid/carbon impregnation ratios (30%, 60%, 100%, and 150%) were prepared and characterized using BET, FTIR, SEM, and TGA/DTG analysis. The optimal impregnation ratio obtained was 150%. AC150% was used as an adsorbent for the MB dye. The Box-Benken design (BBD) was utilized to optimize retention parameters such as pH, dye concentration, temperature, and contact time. Twenty-nine experiments were carried out using the Box-Behnken design. With an optimal <i>R</i>² score of 0.9954 and an appropriate link between the variables and response, the quadratic model was determined to be the best fit. The optimal conditions for MB dye adsorption onto AC150% were identified. The results indicate that the retention conditions had a significant influence on MB color removal. The ideal parameters for 96.99% MB elimination were obtained at an initial concentration of 400 mg.L⁻¹, a pH of 5.65, a contact time of 60 min, and a temperature of 35 °C. Kinetic and equilibrium analyses were also performed to assess the efficiency of the generated AC under optimal MB elimination conditions. The pseudo-second-order model and the Langmuir isotherm provided a good fit to the experimental data, with an elevated adsorption capacity of 763.35 mg.g⁻¹. According to the experimental results, AC150% has the potential to be used as an adsorbent in wastewater treatment processes to remove organic pollutants.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"22833 - 22848"},"PeriodicalIF":4.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}