Carbon Resources Conversion最新文献

{"title":"Improved biohydrogen production from lactic acid bacteria contaminating substrates by enriched hydrogen-producing consortium with lactate-fermentation pathway","authors":"Phonsini Ngamnurak ,&nbsp;Alissara Reungsang ,&nbsp;Pensri Plangklang","doi":"10.1016/j.crcon.2024.100295","DOIUrl":"10.1016/j.crcon.2024.100295","url":null,"abstract":"<div><div>The hydrogen-producing consortium conveying the lactate-fermentation pathway was enriched and used as a co-inoculum with the non-enriched hydrogen-producing consortium for biohydrogen production in the presence of lactic acid bacteria (LAB). The co-inoculum treatment achieved superior hydrogen production performance compared to that of the non-enriched consortium treatment. The effects of enriched consortium concentration, initial pH, and glucose concentration were evaluated, and hydrogen production potential (HP) of 1,605 ± 161 mL-H₂/L and a maximum hydrogen production rate (HPR) of 87.17 ± 15.85 mL-H₂/L.h were achieved under optimal conditions. Biohydrogen production from food waste using the co-inoculum was 1,137 mL-H₂/L from non-autoclaved food waste, corresponding to 56.85 mL-H₂/g-VS_added. Metabolite product and microbial community analyses during food waste fermentation indicated positive cross-feeding activity of hydrogen producers, LAB, and acetogenic bacteria. This study provides valuable information on the use of an efficient, enriched hydrogen-producing consortium to improve biohydrogen production from LAB-contaminated feedstock.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 1","pages":"Article 100295"},"PeriodicalIF":6.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outside Back Cover","authors":"","doi":"10.1016/S2588-9133(24)00071-1","DOIUrl":"10.1016/S2588-9133(24)00071-1","url":null,"abstract":"","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"7 3","pages":"Article 100282"},"PeriodicalIF":6.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588913324000711/pdfft?md5=89c2627721ad36ea4a6f81b1703ac163&pid=1-s2.0-S2588913324000711-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing bioethanol production from sweet sorghum stem juice under very high gravity fermentation and temperature stress conditions","authors":"Phon Thatiyamanee ,&nbsp;Pattana Laopaiboon ,&nbsp;Lakkana Laopaiboon","doi":"10.1016/j.crcon.2024.100274","DOIUrl":"10.1016/j.crcon.2024.100274","url":null,"abstract":"<div><div>This study optimized ethanol production from sweet sorghum stem juice (SSJ) by <em>Saccharomyces cerevisiae</em> NP01 under very high gravity (VHG) fermentation in 500-mL air–locked flasks at 30 °C. Response surface methodology based on a Box-Behnken design was employed to optimize initial sugar (267 g/L), urea (3.24 g/L), and cell concentration (1.32 × 10⁸ <!-->cells/mL) for maximization of ethanol concentration (<em>P_E</em>), productivity (<em>Q_P</em>), and sugar consumption (<em>%SC</em>). The experimental values (<em>P_E</em>, 119.29 g/L; <em>Q_P</em>, 2.49 g/L.h and <em>%SC</em>,<!--> <!-->91.83 %) under optimal conditions were close to the predicted values, verifying the optimization process. Aeration (2.5 vvm for 4 h) increased viable cell counts and decreased glycerol production (a by-product), but not fermentation efficiency. An osmoprotectant (40 <!--> <!-->mM potassium chloride combined with 10 mM potassium hydroxide, KCl/KOH) at 30 °C had no positive effect on ethanol fermentation efficiency. However, at 25 °C, the osmoprotectant increased <em>P_E</em> from 106 to 116 g/L and ethanol yield from 0.46 to 0.49 g/g. At 35–37 °C, it prolonged cell viability, increasing <em>P_E</em> by 5–12 g/L and <em>%SC</em> by 3–8 % without affecting ethanol yield. However, at 39 °C, no positive impact occurred on ethanol fermentation efficiency. The findings from this study, particularly the optimized fermentation conditions and stress tolerance strategies, could guide the scale-up to an industrial level of bioethanol production from sweet sorghum stem juice or other feedstocks using VHG fermentation, contributing to the development of more efficient and sustainable biofuel production processes.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 1","pages":"Article 100274"},"PeriodicalIF":6.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143154664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of spent yeasts from bioethanol production plant as low-cost nitrogen sources for ethanol fermentation from sweet sorghum stem juice in low-cost bioreactors","authors":"Thanawat Thanapornsin ,&nbsp;Rattanaporn Phongsri ,&nbsp;Lakkana Laopaiboon ,&nbsp;Pattana Laopaiboon","doi":"10.1016/j.crcon.2024.100269","DOIUrl":"10.1016/j.crcon.2024.100269","url":null,"abstract":"<div><div>Two spent yeasts from an ethanol production plant, spent yeast after distillation (SY-AD) and spent yeast after fermentation (SY-AF), were used as low-cost nitrogen sources for ethanol fermentation from sweet sorghum stem juice (SSJ) by a commercial dry yeast (<em>Saccharomyces cerevisiae</em>) in air-locked flasks. SY-AF was the more effective nitrogen source for ethanol fermentation, giving ethanol concentration (<em>P_E</em>) and ethanol productivity (<em>Q_E</em>) values of 95.22 g/L and 1.98 g/L·h, respectively. When SY-AF was disrupted by autolysis, and the spent yeast hydrolysate (SYH) obtained was used as a nitrogen supplement. It was found that ethanol production in terms of <em>P_E</em> and <em>Q_E</em> values increased to 102.20 g/L and 2.83 g/L·h, respectively. When three bioreactors, a stirred-tank bioreactor (STR, a typical bioreactor), a column bioreactor with stirrer (CS-R, a tower bioreactor) and an external loop bioreactor (ELR, a low-cost bioreactor with no agitation), were used for ethanol production from the SSJ supplemented with SYH, the fermentation efficiencies of all bioreactors were not different. Appropriate aeration during fermentation (0.31 vvm for 12 h) in the three bioreactors could enhance the <em>Q_E</em> value, reaching 3.36 g/L·h. Both the CR-S and ELR could be successfully used for ethanol production from SSJ supplemented with SYH.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 1","pages":"Article 100269"},"PeriodicalIF":6.4,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developments and challenges on enhancement of photocatalytic CO2 reduction through photocatalysis","authors":"Haiquan Wang ,&nbsp;Qingjie Guo ,&nbsp;Hongyan Zhang ,&nbsp;Cheng Zuo","doi":"10.1016/j.crcon.2024.100263","DOIUrl":"https://doi.org/10.1016/j.crcon.2024.100263","url":null,"abstract":"<div><p>The conversion of CO₂ into high-value fuels and chemicals has garnered research interest worldwide. The conversion and utilization of CO₂ has become one of the most urgent tasks for society. In this context, using solar energy to convert CO₂ into high-value fuels such as CH₄ and CH₃OH has extremely high potential application value. Herein, the research progress and results of applying various photocatalysts in photocatalytic CO₂ reduction with various novel catalysts were reviewed. Furthermore, strategies for improving photocatalytic performance were reviewed. Finally, improving the catalytic mechanism of catalysts and designing novel high-activity, high-stability catalysts through comprehensive exploration of the reaction mechanism were suggested to meet the future requirements of industrial production.</p></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"7 3","pages":"Article 100263"},"PeriodicalIF":6.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588913324000528/pdfft?md5=2d882a2fbf38d93ea0dc75ff7b8cd05e&pid=1-s2.0-S2588913324000528-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141323627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outside Back Cover","authors":"","doi":"10.1016/S2588-9133(24)00049-8","DOIUrl":"https://doi.org/10.1016/S2588-9133(24)00049-8","url":null,"abstract":"","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"7 2","pages":"Article 100260"},"PeriodicalIF":6.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588913324000498/pdfft?md5=a2ff5176c97751f5804e268a0411c789&pid=1-s2.0-S2588913324000498-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141068809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrocarbon-conversion reaction and new paraffin-kinetic model during straight-run gas oil (SRGO) hydrotreating","authors":"","doi":"10.1016/j.crcon.2024.100246","DOIUrl":"10.1016/j.crcon.2024.100246","url":null,"abstract":"<div><p>A series of related experiments were carried out based on prepared hydrocracking catalyst, Catalyst-HC. Ni &amp; W and USY molecular sieve were selected as the hydrogenation active component and the cracking component of Catalyst-HC, respectively. Meanwhile, a kinetic model for paraffin conversion was constructed based on paraffin conversion law. Results obtained through this work indicate that the impact of H₂-pressure is relatively complex. As the H₂-pressure changes, the degree of hydrocracking reaction may be influenced by both hydrogen supply capacity and hydrogen proton concentration. Obtained conversion priority for three types of hydrocarbons on USY molecular sieve is as follows, aromatic ≫ cycloalkane &gt; paraffin. Aromatic content in SRGO can affect its paraffin-retention in Hydro-D. Compared with the hydrotreating of SRGO with low aromatic content, when SRGO with relatively higher aromatic content is hydrotreated, its paraffin-retention is higher and its paraffin loss is also relatively smaller. Base on constructed model, the calculated values of SRGO-BJ conversion rate and paraffin-retention in Hydro-D are within ±10 % and ±5 % error lines, respectively. Thus, model schematic diagram is reasonable and can provide modeling reference for relevant model research.</p></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"7 4","pages":"Article 100246"},"PeriodicalIF":6.4,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588913324000358/pdfft?md5=18ae1e0eb12d60856eee0981d34f5268&pid=1-s2.0-S2588913324000358-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140780029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of graphene Oxide’s aromatic rings in activated carbon made from banana leaves (ACBL) and Fe3O4 in hydrogen production","authors":"Dewi Sartika ,&nbsp;Denny Widhiyanuriyawan ,&nbsp;Agung Sugeng Widodo ,&nbsp;Purnami ,&nbsp;I.N.G Wardana","doi":"10.1016/j.crcon.2024.100239","DOIUrl":"10.1016/j.crcon.2024.100239","url":null,"abstract":"<div><div>Fe₃O₄ is an internal magnet that can work as a medium for the electrolyte solution in electrochemical hydrogen production to facilitate electron movement. When Fe₃O₄ is combined with activated carbon made from banana leaves (ACBL), electron transfer occurs between the ACBL aromatic ring and Fe³⁺ ions from solved Fe₃O₄, which increases the solution’s conductivity and finally produces more hydrogen. ACBL is a biomass catalyst used as a free parameter to increase the Fe₃O₄ magnetic field in the solution. The Fe₃O₄ was synthesized using the coprecipitation method, while ACBL was obtained through an activation process to produce graphene oxide. Graphene oxide in ACBL was characterized using Scanning Electron Microscopy (SEM) EDX, Fourier Transform Infra-Red (FTIR), Brunauer, Emmett, and Teller (BET), and TEM (Transmission Electron Microscopy). BET was used to determine the surface area of ACBL. Hydrogen was produced using the electrolysis method. The SEM results showed that the elemental content of graphene oxide in ACBL was 72.47 %. The graphene oxide in ACBL had a positive charge represented by a bright color on the sample surface. The positive charge was due to the FTIR O-H and C-O groups working with Fe₃O₄. BET analysis showed that the average pore diameter of ACBL was 1.68 nm. The largest hydrogen production results were obtained at ACBL 200 mesh, which was 15.5 ml. ACBL from abundant biomass has magnetic and electrical potential within its aromatic ring. As the aromatic ring interacts with the magnetic field of Fe₃O₄, the electromagnetic field of the solution is strengthened. As a result, hydrogen production increases.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 1","pages":"Article 100239"},"PeriodicalIF":6.4,"publicationDate":"2024-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140759698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A non-aseptic bioprocess for production and recovery of 2,3-butanediol via conversion of crude glycerol and corn steep liquor at pilot-scale","authors":"Dimitris Karayannis ,&nbsp;Nikos Angelou ,&nbsp;Gabriel Vasilakis ,&nbsp;Ioannis Charisteidis ,&nbsp;Alexandros Litinas ,&nbsp;Seraphim Papanikolaou","doi":"10.1016/j.crcon.2024.100242","DOIUrl":"10.1016/j.crcon.2024.100242","url":null,"abstract":"<div><div>The production and recovery of 2,3-butanediol (BDO) through biodiesel derived glycerol valorization by <em>Klebsiella oxytoca</em> ACA-DC 1581 was holistically optimized with regard to the efficiency and cost of the bioprocess. The absence of thermal treatment of the substrate had no negative effect upon the growth of microorganism and the bioconversion of crude glycerol into BDO, enabling the development of a non-aseptic and lower-cost bioprocess. Both digestate and corn steep liquor (CSL), the main by-products of the biogas and corn industries respectively, successfully served as the sole source of nitrogen, contributing to the complete replacement of more expensive sources (e.g., yeast extract). The biochemical pathway of glycerol catabolism was examined under varying concentrations of dissolved oxygen and BDO production was optimized in a fully aerobic environment (volumetric mass transfer coefficient; k_La = 70.5 1/h.) The glycerol consumption rate was 2.80 g/L/h, the BDO productivity reached 1.12 g/L/h and the yield of BDO produced per unit of glycerol consumed was 0.46 g/g, with these values being among the highest ones reported in the literature for wild-type strains cultivated on crude glycerol. In all fed-batch fermentations, final BDO and acetoin concentration reached ∼80 g/L, while a plateau was observed at ∼68 g/L of BDO. Finally, the culture was carried out efficiently in the pilot-scale reactor (250 L). The salting-out extraction (SOE), consisting of ethanol (24 %) and K₂HPO₄ (25 %), recovered 91.7 % of BDO from the fermentation medium and was studied for the first time in a glycerol-based medium. The study suggests the potential industrialization of the bioprocess through sustainable, pilot-scale and low-cost bioconversion of biodiesel-derived crude glycerol and CSL or digestate into BDO.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 1","pages":"Article 100242"},"PeriodicalIF":6.4,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140792551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 methanation over low-loaded Ni-M, Ru-M (M = Co, Mn) catalysts supported on CeO2 and SiC","authors":"Chopendra G. Wasnik,&nbsp;Maki Nakamura,&nbsp;Taiki Shimada,&nbsp;Hiroshi Machida,&nbsp;Koyo Norinaga","doi":"10.1016/j.crcon.2024.100241","DOIUrl":"10.1016/j.crcon.2024.100241","url":null,"abstract":"<div><div>The concentration of the major greenhouse gas CO₂ is rapidly increasing in the atmosphere, leading to global warming and a range of environmental issues. An efficient circulation and utilization of CO₂ is critical in the current environmental context. Methanation, an exothermic process, emerges as a critical strategy for effective CO₂ utilization. On this front, there is a significant demand for rational design of catalysts that maintain high activity and methane selectivity over a wide temperature range (250–550 °C). The catalyst that can promise a consistent reaction even at 500 °C under an atmospheric pressure is thus obliged. The present study investigated bimetallic catalysts with SiC, which is known for its exceptional thermal conductivity, and CeO₂, which is characterized by its CO₂ affinity, as base materials. We incorporated Ni-M and Ru-M (M = Co and Mn) as the active metals, each loaded at 2 %. Impressively, with merely 20 mg, the Ni-Co/SiC catalyst achieved a CO₂ conversion rate of 77 % and CH₄ selectivity of 88 % at 500 °C, in a fixed-bed tubular reactor system with conditions of H₂/CO₂ = 4, a total flow rate of 70 ml min⁻¹, and a steady GHSV of 12,000 h⁻¹. Moreover, 2Ni-2Co/CeO₂ catalyst demonstrated exceptional performance with a 76 % conversion of CO₂ and a 83 % selectivity for CH₄, all under identical conditions. The catalyst's durability was confirmed by a subsequent 40-hour stability test, which showed only a 3–5 % degradation. The developed catalysts were comprehensively characterized by BET/BJH, CO pulse chemisorption, H₂-TPR, HAADF-STEM-EDS, SEM-EDS and XRD etc. to unveil their physicochemical and surface traits. It was found that Co and Mn, when integrated, effectively restrained the agglomeration of Ni and Ru particles, ensuring optimal metal dispersion on the support. In conclusion, our synthesized bimetallic catalysts shown a sustained catalytic capability, even in the high-temperature environment.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 1","pages":"Article 100241"},"PeriodicalIF":6.4,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140758443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}