Biomass Conversion and Biorefinery最新文献

{"title":"Bioactive compound recovery from Agave angustifolia Haw. leaf waste from bacanora industry: physicochemical properties, antioxidant and antimicrobial activity of the extract","authors":"Ariel Alain Vergel-Alfonso,&nbsp;Francisco Rodríguez-Félix,&nbsp;Betzabe Ebenhezer López-Corona,&nbsp;Carlos Gregorio Barreras-Urbina,&nbsp;Delvis Rafael Acosta-Martínez,&nbsp;José Agustín Tapia-Hernández,&nbsp;Carmen Lizette Del-Toro-Sánchez,&nbsp;José Luis Cárdenas-López,&nbsp;Maribel Plascencia-Jatomea,&nbsp;Silvia Elena Burruel-Ibarra,&nbsp;Dalila Fernanda Canizales-Rodríguez,&nbsp;Itzel Yanira López-Peña","doi":"10.1007/s13399-025-06741-z","DOIUrl":"10.1007/s13399-025-06741-z","url":null,"abstract":"<div><p>The leaves of <i>Agave</i> <i>angustifolia</i> Haw. represent approximately 46% of the plant’s total weight, and are typically discarded during the bacanora production process in the state of Sonora, Mexico, constituting an agro-industrial by-product that is not used in the region. The leaves contain active compounds that can be extracted and used for various purposes. The objective of this research was to efficiently use the leaves of <i>Agave</i> <i>angustifolia</i> Haw. discarded during the bacanora production process. Three extraction methods were used, two fresh extractions and one from the dry material. The first involved crushing the material in water, followed by filtering and drying. The second method included an additional step of carbohydrate precipitation using absolute ethanol. The third extraction was by mashing from the dried and crushed plant material. Aqueous extraction of the dried plant material was identified as having the highest extraction yield, achieving a dry basis yield of 31.89% (w/w). The study focused on the optimization of this extraction process, considering factors such as temperature, extraction time, and the mass-to-solvent ratio, in order to contribute to the revaluation of this agro-industrial by-product. Optimal yield was achieved at 80 °C and using 30 mL of water per gram of plant material. The mineral content was 20%, with potassium and calcium accounting for 33.43% and 13.27% of the extract ash, respectively. The extract presented a dilatant rheological behavior, and its viscosity was low, evidencing that the polymeric chains are short. The extract showed significant antioxidant activity. The IC50 values were 480 µg/mL for DPPH• and 19 µg/mL for ABTS•⁺ radicals. Its reducing power determined by FRAP was 2.70 mmol TE/g. Additionally, the extract contained a total phenol content of 344.99 mg GAE/g. For antimicrobial activity, the IC50 values were 81.32 mg/mL for <i>Listeria monocytogenes</i> and 162.86 mg/mL for <i>Pseudomonas fragi.</i> Moreover, the growth of <i>Colletotrichum siamense</i> fungus was completely inhibited at concentrations ranging from 0.06 to 1.0% (w/v). This extract can be used for a variety of purposes, such as in the food or materials field, and its production process is easily reproducible because no complex technological processes or costly or aggressive solvents are used.</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":"22745 - 22764"},"PeriodicalIF":4.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165707","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":"Enhanced removal of heavy metal chromium than lead from aqueous solution by glutaraldehyde crosslinked grafted chitosan biomass/bentonite composite","authors":"Nithya Ravi,&nbsp;Mohammad Khalid Al-Sadoon,&nbsp;Daisy Rani James Durai,&nbsp;Supriya Prasad Parappurath,&nbsp;Ansar Ali Zainul Abideen,&nbsp;Sudha Parappurath Narayanan","doi":"10.1007/s13399-025-06735-x","DOIUrl":"10.1007/s13399-025-06735-x","url":null,"abstract":"<div><p>The present study investigates the potential of glutaraldehyde crosslinked grafted chitosan biomass/bentonite composite as an adsorbent for the removal of Cr(VI) and Pb(II) ions from aqueous solutions. The composite was synthesized by grafting chitosan biomass obtained from crab shells with n-butyl acrylate using ceric ammonium nitrate as an initiator, followed by blending with bentonite clay in a 1:1 ratio and crosslinking with glutaraldehyde. The prepared composite was characterized using FTIR and XRD techniques. Batch adsorption experiments were conducted to determine the ideal settings for removing heavy metal ions at a constant temperature of 30 °C by adjusting pH, adsorbent dosage, contact duration, and beginning metal ion concentration. The results demonstrated the synergistic effect of the materials used in the composite, enhancing its adsorption capacity for Cr(VI) and Pb(II) ions. The adsorption capacity of the sorbent for metal Cr(VI) ions was more than that of Pb(II) ions. The removal percentage of both the metal ions was &gt; 90%. The study highlights the potential of the Cs-g-PBA/Bent composite as an eco-friendly and cost-effective alternative to activated carbon for the treatment of heavy metal-contaminated wastewater and contributes to the development of sustainable solutions for environmental remediation and helps in promoting human health.</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":"22795 - 22817"},"PeriodicalIF":4.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164673","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":"Green synthesis of tin and titanium nanoparticles using edible plant extracts: exploring their anticancer and antifungal activities","authors":"Mine Sulak,&nbsp;Berna Kavakcıoğlu Yardımcı","doi":"10.1007/s13399-025-06745-9","DOIUrl":"10.1007/s13399-025-06745-9","url":null,"abstract":"<div><p>The rise of green chemistry underscores the need for simple and cost-effective nanomaterial synthesis utilizing plant extracts. In this study, tin (IV) oxide and titanium dioxide nanoparticles (SnO₂NPs and TiO₂NPs) were synthesized through a green method from <i>Cnicus benedictus</i> and <i>Aronia melanocarpa</i> extracts, respectively. These plant sources were selected due to their rich bioactive content, which enhances nanoparticle synthesis and stability. Besides, the use of these extracts eliminates the need for harmful reducing agents, offering an eco-friendly approach compared to conventional green synthesis methods. Characterization with XRD, ATR-FTIR, and FE-SEM confirmed the successful synthesis. SnO₂NPs had a tetragonal crystal structure with a dimension of 27.48 nm, while the average crystal size of the dominant rutile phase in the structure of TiO₂NPs was 19.88 nm. ATR-FTIR spectra of SnO₂NPs and TiO₂NPs indicated the presence of specific vibration peaks of the O–Sn–O and Ti–O bonds, respectively. While the SnO₂NPs had a spherical structure, the TiO₂NPs did not distribute homogeneously, and there were clustered particles in the structure. Both nanomaterials were found to be effective against the human breast cancer cell line. The cell viability was 43.45% and 49.56% after treatment with SnO₂NPs and TiO₂NPs, respectively. Finally, especially SnO₂NPs but not TiO₂NPs showed anti-proliferative effects on both wild-type <i>Saccharomyces cerevisiae</i> BY4741 and <i>Candida albicans</i>. These findings indicate the potential applicability of these nanoparticles in biomedicine, particularly for targeted cancer therapies and antifungal treatments, as well as in environmental remediation.</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 12","pages":"18331 - 18344"},"PeriodicalIF":4.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13399-025-06745-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143213","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":"Preparation of activated carbon from Ziziphus jujuba stones by H3PO4-assisted thermo-chemical activation: application in the removal of anionic diazo dye from synthetic water","authors":"Noreddine Boudechiche,&nbsp;Zahra Sadaoui,&nbsp;Houria Rezala,&nbsp;Fatima Hattou,&nbsp;Asma Taeib","doi":"10.1007/s13399-025-06713-3","DOIUrl":"10.1007/s13399-025-06713-3","url":null,"abstract":"<div><p>Agricultural waste serves as a valuable source of organic matter for producing activated carbon, which can be used for the removal of the anionic dye Direct Blue 227 from aqueous solutions. In this study, <i>Ziziphus jujuba</i> stones (ZJS) were utilized as a precursor to synthesize activated carbon (ACZJS) via H₃PO₄ activation, with an impregnation ratio (H₃PO₄ mass/precursor mass) of 2. The activation process was conducted at 600 °C for 2 h. The structural and surface properties of ACZJS were characterized using pH_PZC, ATR-FTIR, SEM–EDX, and BET analysis. Batch experiments were performed to investigate the influence of key parameters, including contact time (0–240 min), pH (2 − 10), ACZJS dose (0.2–1.2 g/L), initial dye concentration (80–500 mg/L), and temperature (20–50 °C), on the adsorption performance. The dominant adsorption mechanism at pH &lt; pH_PZC was identified as electrostatic attraction and cation exchange between DR227 and ACZJS. Thermodynamic analysis confirmed that the adsorption process was spontaneous and endothermic. Various isotherm models were examined, and based on APE and <i>R</i>² values, the Sips and Redlich–Peterson models suggest a hybrid adsorption mechanism on the ACZJS surface, combining homogeneous and heterogeneous adsorption sites, with minor contributions from surface heterogeneity as indicated by <i>β</i> = 0.95. The non-linear Langmuir model estimated a maximum monolayer adsorption capacity of 177 mg/g at pH 2. Moreover, the adsorption kinetics of DR227 dye at different pH levels (2–10) were best described by the pseudo-second-order model (<i>R</i>² &gt; 0.99). The intraparticle diffusion analysis indicated that adsorption was not solely governed by intraparticle diffusion, as evidenced by <i>R</i>² &gt; 0.95 and the presence of a boundary layer effect in the liquid film. Thermodynamic parameters further confirmed that the adsorption process was spontaneous (Δ<i>G</i> &lt; 0) and endothermic (Δ<i>H</i> &gt; 0). The regeneration of DR227-loaded ACZJS was evaluated over four consecutive adsorption/desorption cycles. Overall, the findings suggest that this low-cost, eco-friendly activated carbon derived from <i>Ziziphus jujuba</i> stones holds promise for wastewater treatment applications involving anionic dye removal.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23029 - 23046"},"PeriodicalIF":4.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164664","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":"Mathematical and artificial neural network modeling for describing the infrared drying process of Moringa oleifera leaves and evaluation of product quality","authors":"Nguyen Minh Thuy,&nbsp;Hong Van Hao,&nbsp;Tran Ngoc Giau,&nbsp;Vo Quang Minh,&nbsp;Ngo Van Tai","doi":"10.1007/s13399-025-06731-1","DOIUrl":"10.1007/s13399-025-06731-1","url":null,"abstract":"<div><p><i>Moringa oleifera</i> leaves were used in the infrared drying method for powder production. The moisture ratio datasets during drying at different temperatures were fitted with eight thin-layer drying kinetics and analyzed by an artificial neural network (ANN). The goodness of fit was evaluated using the value of the coefficient of determination (<i>R</i>²), the chi-square (<i>χ</i>²), and the root mean square error (RMSE). Results indicated that drying time was between 40 and 95 min at a temperature of 55 to 70 °C. Among the mathematical drying models used, the Wang and Singh model best described the drying kinetics of Moringa leaves. But comparing with the ANN model—a machine learning-based model—it showed higher prediction capacity than the mathematical model did. For Moringa leaves dried at temperatures between 55 and 70 °C, the <i>R</i>², <i>χ</i>², and RMSE values for this model ranged from 97.85 to 99.59%, 0.0007 to 0.0029, and 0.0228 to 0.0503, respectively. Effective moisture diffusivity (<i>D</i>_eff) values varied between 1.908 × 10⁻¹¹ and 3.875 × 10⁻¹¹ m²/s, with an activation energy of 43.92 kJ/mol. The drying temperature also influenced the bioactive compounds in Moringa leaves. The vibrant color of the powder was produced by drying Moringa leaves at 65 °C for 50 min. The powder had 5.85% moisture, 31.97% protein, 61.05 mg/100 g β-carotene, 62.82 mg QE/g total flavonoid content, and 1789.65 mg/100 g calcium content.\u0000</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23199 - 23209"},"PeriodicalIF":4.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164403","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":"Enzymatic hydrolysis and additional mild pretreatments for recovery of valuable compounds from organic fraction of municipal solid waste at high-solids loading","authors":"Annika Putz,&nbsp;Georg M. Guebitz,&nbsp;Angelika Hanreich-Kur,&nbsp;Markus Neureiter","doi":"10.1007/s13399-025-06738-8","DOIUrl":"10.1007/s13399-025-06738-8","url":null,"abstract":"<div><p>The organic fraction of municipal solid waste (OFMSW) is usually processed via composting or anaerobic digestion. Thereby, the potential of OFMSW as a renewable feedstock is not fully exploited. Here, a systematic evaluation of enzymatic hydrolysis among the mild pretreatments of OFMSW from a waste treatment plant aiming to increase the total amount of soluble compounds within the liquid fraction is provided. Pretreatment combinations and conditions tested were shredding for size reduction, autoclaving to lower the microbial activity, enzyme addition and two different dry matter contents at high-solids loading. The results provide valuable information about the enzymatic hydrolysis of OFMSW and subsequent solid–liquid separation. Shredding prior to enzyme addition led to higher amounts of soluble molecules released (e.g. glucose), which indicates an enhanced enzymatic hydrolysis. As a result of improved hydrolysis, an overall increase of the liquid fraction obtained after solid–liquid separation was observed. Thereby, the yield of lactic acid that is already present within the OFMSW and the yield of other soluble compounds were increased. Enzymatic hydrolysis of OFMSW with dry matter content of 25% (w/w) was more effective compared to dry matter content of 30% (w/w). The presented findings help to further develop suitable pretreatment methods and find appropriate process characteristics in terms of the solid load for OFMSW. This will facilitate the utilisation of OFMSW at high-solids loading to produce value-added products within a circular economy.</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":"23103 - 23115"},"PeriodicalIF":4.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13399-025-06738-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164661","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":"White clover components as an effective biosorbent for the elimination of toxic malachite green from wastewater","authors":"Salma Gul,&nbsp;Sana Afsar,&nbsp;Tawaf Ali Shah,&nbsp;Hajera Gul,&nbsp;Tariq Aziz,&nbsp;Nureen Zahra,&nbsp;Majid Alhomrani,&nbsp;Walaa F. Alsanie,&nbsp;Abdulhakeem S. Alamri","doi":"10.1007/s13399-025-06714-2","DOIUrl":"10.1007/s13399-025-06714-2","url":null,"abstract":"<div><p>The present study utilized white clover as a biosorbent for removing malachite green (MG) dye from wastewater. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX) were employed to investigate the attachment of MG dye to the biosorbent, white clover. The study analyzed the optimal parameters for adsorption, including the effects of initial concentration, adsorbent dosage, pH, duration of exposure, and ionic strength of the salt for white clover. The pseudo-first- and pseudo-second-order models were applied to examine the kinetic properties of adsorption, with the pseudo-second-order model providing a more accurate representation of the kinetic behavior. Equilibrium data were evaluated by using the isotherm models Langmuir and Freundlich. The isotherm model proposed by Langmuir fits more correctly than the Freundlich model. The maximum adsorption capacity (<i>q</i>_m) was 8.285 mg/L for MG dye. The highest percent of adsorption was obtained at 93.13%. In this study, malachite green dye was successfully removed from different groundwater samples by using adsorbents. The present experiment and comparison with other known adsorbents demonstrated that white clover is a low-cost and effective biosorbent for removing MG dye from a water solution.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23211 - 23223"},"PeriodicalIF":4.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164430","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":"Effect of lignin structure composition on anaerobic digestion based on lignin monomer model compounds","authors":"Qiumin Li,&nbsp;Bin Yang,&nbsp;Chengyue Liang,&nbsp;Kai Wu,&nbsp;Xingling Zhao,&nbsp;Changmei Wang,&nbsp;Jing Liu,&nbsp;Hong Yang,&nbsp;Fang Yin,&nbsp;Wudi Zhang","doi":"10.1007/s13399-025-06730-2","DOIUrl":"10.1007/s13399-025-06730-2","url":null,"abstract":"<div><p>Due to the complex structure formed by lignin, Lignofiber raw materials are difficult to be degraded by microorganisms, and lignin itself is also difficult to be biodegraded, which is an important factor affecting the methane production of anaerobic digestion. The proportion and quantity of three monomers (H, G, S) in the lignin structure also affect the methane production of anaerobic digestion, but there are few relevant studies. The effect of monomer concentration on methanogenesis is still unclear.Therefore, phenol, guaiacol and syringol were used as the model compounds of lignin monomers, and the effects of lignin monomer concentration on anaerobic digestion were studied by batch anaerobic digestion experiments. The results showed that low concentrations (0.02 – 0.1 g/L) of phenol and guaiacol promoted the production of biogas, while high concentrations inhibited the production of methane and delayed the production of biogas peak. When phenol concentration ≥ 3.0 g/L or guaiacol concentration ≥ 8.0 g/L, biogas production was completely inhibited. In addition, 2, 6-dimethoxyphenol had no significant effect on digestion at 0.02 – 0.2 g/L, but the delay period and total biogas production increased at 1.0 – 4.0 g/L. The inhibitory effect is mainly due to the obstruction of acid production, especially acetic acid of p-phenol and guaiacol, while 2, 6-dimethoxyphenol causes acidification. The results showed that the inhibitory effect of syringyl lignin was lower than that of guaiacyl lignin and p-hydroxyphenyl lignin. These findings highlight the complex interplay between lignin monomers and anaerobic digestion.</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 14","pages":"20853 - 20865"},"PeriodicalIF":4.1,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861510","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":"Enzymatic xylanolysis and assessment on prebiotic arabino- and xylooligosaccharides from defatted rice bran","authors":"Pannapapol Jaichakan,&nbsp;Tanyawat Kaewsalud,&nbsp;Massalin Nakphaichit,&nbsp;Tipawan Thongsook,&nbsp;Wannaporn Klangpetch","doi":"10.1007/s13399-025-06729-9","DOIUrl":"10.1007/s13399-025-06729-9","url":null,"abstract":"","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 14","pages":"21419 - 21435"},"PeriodicalIF":4.1,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861508","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":"N-doped activated carbon for enhanced CO2 sorption through self-activation","authors":"Xiaoben Zhao,&nbsp;Tao He,&nbsp;Shuainan Wang,&nbsp;Song He","doi":"10.1007/s13399-025-06732-0","DOIUrl":"10.1007/s13399-025-06732-0","url":null,"abstract":"<div><p>In this research, nitrogen-doped activated carbons (NACs) featuring a high specific surface area (3396 m²/g) and a certain amount of nitrogen doping (0.79–1.69%) were prepared by a combination of chemical activation and self-activation methods, and their CO₂ adsorption characteristics were comprehensively assessed. The experimental results showed that nitrogen doping not only significantly enhanced the specific surface area of the materials, but also significantly enhanced the CO₂ adsorption. The CO₂ adsorption capacity of the optimal sample, CMAC-0.5–3-700, reached 4.11 mmol/g and 2.32 mmol/g at 0 °C and 25 °C, respectively. In addition, the selectivity of NACs for CO₂/N₂ was significantly improved, with a selectivity factor of up to 50.16, and the competitive adsorption experiments also demonstrated that NACs could still effectively adsorb CO₂ under the condition of CO₂/N₂ = 15/85. Density-functional theory (DFT) calculations further revealed the interaction mechanism between NACs and CO₂ molecules, the enhanced CO₂ selectivity is attributed to electrostatic and π-electron interactions between nitrogen atoms and CO₂. The findings indicate the significant potential of nitrogen-doped activated carbons (NACs) with high specific surface area and substantial nitrogen doping for post-combustion CO₂ capture.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 14","pages":"21437 - 21454"},"PeriodicalIF":4.1,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861509","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}