Carbon Resources Conversion最新文献

{"title":"Simultaneous biomethane and hydrochar recovery from washed elephant dung: The effects of inoculum source, substrate to inoculum ratio, and hydrothermal temperature","authors":"Chayanon Sawatdeenarunat ,&nbsp;Boonya Charnnok ,&nbsp;Rojapun Nirunsin ,&nbsp;Sumate Chaiprapat ,&nbsp;Chen-Yeon Chu","doi":"10.1016/j.crcon.2024.100297","DOIUrl":"10.1016/j.crcon.2024.100297","url":null,"abstract":"<div><div>This research aims to develop the appropriate biorefinery process integrating anaerobic digestion (AD) and hydrothermal carbonization (HTC) to recover the highest energy from the pretreated elephant dung. Initially, the raw elephant dung was physically processed by washing with water to generate the liquid waste, i.e., washing water (WW), and solid waste, i.e., washed fiber (WF). The appropriate substrate-to-inoculum ratio (SIR) and the inoculum source of the AD of WW were determined and the HTC temperature of WF was also examined. The results indicated that the AD of WW with the SIR of 1:2 and anaerobically digested swine manure as the inoculum presented the highest methane and energy yields of 412.3 ± 9.9 N mL/g VS _added and 2,220.1 ± 53.03 MJ/ton dry wt., respectively. For HTC of WF, the optimum condition was the hydrothermal temperature of 170 °C at the residence time of 60 min. The highest hydrochar and energy yields were 76.8 % ± 1.9 % dry wt. and 12,067.0 ± 452.1 MJ/ton dry wt., respectively. Thus, this biorefinery process could simultaneously treat elephant camp-derived waste and produce clean energy.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 1","pages":"Article 100297"},"PeriodicalIF":6.4,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744302","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":"Catalytic gasification of a single coal char particle: An experimental and simulation study","authors":"Zhuoran Liu ,&nbsp;Xingjun Wang ,&nbsp;Qian Chen ,&nbsp;Hongxia Li ,&nbsp;Qinghua Guo ,&nbsp;Guangsuo Yu ,&nbsp;Haifeng Liu ,&nbsp;Fuchen Wang","doi":"10.1016/j.crcon.2024.100296","DOIUrl":"10.1016/j.crcon.2024.100296","url":null,"abstract":"<div><div>The catalytic coal gasification technology has been widely researched and developed under the background of “Carbon peaking and carbon neutrality goals”. Currently, most of catalytic gasification experiments on coal char particles are analyzed by thermogravimetric analyzer (TGA). However, the gasification agent will be subject to diffusion resistance during the reaction because of the sample stacking, making the inherent reaction kinetics unclear. In this study, we investigated the catalytic gasification behavior of single-particle coal char using high temperature stage microscope (HTSM). With the diffusion resistance ruled out, the reaction conditions when using a HTSM are more similar to those inside a real industrial gasifier. Numerical models of the gasification reaction of single-particle coal char were further developed using the kinetic parameters obtained under HTSM. Three models were investigated, including regular spherical structured, irregular spherical structured and porous spherical structured models, representing different morphologies of coal char particles in the gasifier. The gasification characteristics of coal char particles under different K₂CO₃ catalyst loadings and gasification temperatures were also studied. Compared with the activation energies data of coal char particles without catalyst, the activation energies of coal char particles loaded with 2.2 %, 4.4 %, 6.6 %, and 10.0 % catalysts were reduced by 110 kJ/mol, 116 kJ/mol, 121 kJ/mol, and 126 kJ/mol, respectively. The reaction surface area affects the temperature distribution. The temperature near the irregular spherical particle is about 20 K higher than the temperature near the regular spherical particle.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 1","pages":"Article 100296"},"PeriodicalIF":6.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699380","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":"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":"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":"Degradation of solid oxide fuel cell anodes by the deposition of potassium compounds","authors":"Hui Zhang ,&nbsp;Ryo Yoshiie ,&nbsp;Ichiro Naruse ,&nbsp;Yasuaki Ueki","doi":"10.1016/j.crcon.2024.100238","DOIUrl":"https://doi.org/10.1016/j.crcon.2024.100238","url":null,"abstract":"<div><p>Alkali contents with low melting points in the ash of woody biomass vaporize during the biomass gasification process, damaging various downstream energy conversion devices, such as the solid oxide fuel cells (SOFCs). In this study, the degradation of SOFC anodes by the deposition of potassium compounds (KCl, K₂CO₃, and KOH) was investigated. An aqueous solution of potassium compounds was dripped onto the anode surface of the SOFC button cell at room temperature. After drying at 343 K, 6.964 <span><math><mrow><mo>×</mo></mrow></math></span> 10^-6 mol KCl, 6.964 <span><math><mrow><mo>×</mo></mrow></math></span> 10^-6 mol KOH, and 3.482 <span><math><mrow><mo>×</mo></mrow></math></span> 10^-6 mol K₂CO₃ was deposited on the anode. Button cells with the deposition of K compounds were employed for power generation experiments at 1023 K with the supply of artificial syngas from biomass gasification. After the power generation experiments, the surface structures of the anodes were microscopically analyzed using the SEM and EDS. As a result, K compounds hardly affected the OCV of SOFC. With the addition of KCl, no apparent change in the anode structure was observed, and only a slight KCl deposit was detected. However, chloride tends to be chemisorbed on Ni, increasing the ohmic resistance as well as the adsorption/desorption resistance. However, KOH transformed to K₂CO₃ and then remained massively on the anode, which was clearly observed in the SEM images. K₂CO₃ significantly decreased the cell voltage under a current density of 100 mA·cm⁻². Through impedance analyses, this voltage drop was mainly attributed to the ohmic resistance and gas diffusion resistance. However, there is no evidence that this deposit degrades Ni particles.</p></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"7 4","pages":"Article 100238"},"PeriodicalIF":6.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588913324000279/pdfft?md5=a6a5204a814d37128531f59c27158040&pid=1-s2.0-S2588913324000279-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140535332","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":"Biogas upgrading towards acetic acid production using Clostridium thailandense supplemented with granular activated carbon (GAC) and L-arginine: A genomic analysis approach","authors":"Srisuda Chaikitkaew ,&nbsp;Nantharat Wongfaed ,&nbsp;Chonticha Mamimin ,&nbsp;Sompong O-Thong ,&nbsp;Alissara Reungsang","doi":"10.1016/j.crcon.2024.100236","DOIUrl":"10.1016/j.crcon.2024.100236","url":null,"abstract":"<div><p>This study explores the impact of granular activated carbon (GAC) and L-arginine supplementation on biogas upgrading and acetic acid production employing <em>Clostridium thailandense</em>. GAC and L-arginine concentrations ranged from 0 to 20 g/L and 0 to 5 g/L, respectively, with H₂ acting as the electron donor at an H₂ to CO₂ ratio of 2:1 (v/v). Experiments were conducted at 30 °C with an agitation speed of 150 rpm. Additionally, gene annotation of the <em>C. thailandense</em> genome using Rapid Annotations using Subsystems Technology (RAST) identified genes involved in CO₂ to acetic acid conversion. Results indicate that adding 7.5 g/L GAC boosts CH₄ purity in biogas, elevating CO₂ and H₂ consumption efficiencies to 88.3 % and 98.7 %, respectively. This enhancement leads to a CH₄ content increase to 93.3 %, accompanied by 0.90 g/L acetic acid production. Conversely, L-arginine demonstrates no significant impact on CO₂ conversion. Leveraging RAST, the study identifies hydrogenase genes and NADH-dependent ferredoxin-NADP⁺ oxidoreductase (Nfn), as crucial for heightened H₂ consumption efficiencies and cell growth facilitated by GAC, thus enhancing biogas upgrading efficiency in <em>C. thailandense.</em> This research provides vital insights into optimizing sustainable biogas production through strategic GAC utilization and elucidates the roles of hydrogenase genes and Nfn.</p></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"7 4","pages":"Article 100236"},"PeriodicalIF":6.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588913324000255/pdfft?md5=6757939113bd8a094177848b1d341c85&pid=1-s2.0-S2588913324000255-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140269342","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":"Microstructures, Optical, magnetic Properties, and photocatalytic activity of magnetically separable and reusable ZnO-Doped Fe3O4/rGO nanocomposite synthesized via green route","authors":"Hasniah Aliah ,&nbsp;Nugraheni Puspita Rini ,&nbsp;Irfan Syafar Farouk ,&nbsp;Zurnansyah ,&nbsp;Larrisa Jestha Mahardhika ,&nbsp;Putri Dwi Jayanti ,&nbsp;Hafil Perdana Kusumah ,&nbsp;Rivaldo Marsel Tumbelaka ,&nbsp;Nurul Imani Istiqomah ,&nbsp;Nining Sumawati Asri ,&nbsp;Ryan Nur Iman ,&nbsp;Edi Suharyadi","doi":"10.1016/j.crcon.2024.100235","DOIUrl":"10.1016/j.crcon.2024.100235","url":null,"abstract":"<div><p>We report magnetically-separable, reusable, green-synthesized Fe₃O₄/rGO/ZnO, as heterogeneous catalyst for photo-Fenton degradation of organic pollutants in aqueous solution under certain treatments. Fe₃O₄ nanoparticles was green-synthesized using <em>Moringa oleifera</em> leaf extract, while rGO was synthesized utilizing <em>Amaranthus viridis</em> leaf extract. Fe₃O₄/rGO was composited under sonication treatment. Afterwards, Fe₃O₄/rGO was doped with ZnO with various concentration of ZnO. X-ray diffraction and selected area electron diffraction showed that Fe₃O₄ and ZnO had spinel cubic and hexagonal structure, respectively; another phase appeared as Fe₂O₃ spinel cubic structure. Crystallite size was decreased as the ZnO concentration increased. Morphology image showed almost spherical, non-uniform, and slightly dispersed particle under agglomerated condition, attaching to rGO sheets. The particle size of Fe₃O₄, Fe₃O₄/rGO, and Fe₃O₄/rGO/ZnO is 14.3; 14.1; and 10.4 nm, respectively. Fourier-transform infrared spectra showed metallic functional groups, such as Fe-O and Zn–O at 562–589 and 462–478 cm⁻¹ also suggests nanocomposite formation. However, blue-shift absorption and band gap widening were observed with ZnO addition. Raman spectroscopy revealed the formation as-synthesized GO and rGO. Vibrating sample magnetometer showed that green-synthesized Fe₃O₄/rGO/ZnO exhibited superparamagnetic properties. Removal efficiency of photodegradation methylene blue was optimal for green-synthesized Fe₃O₄/rGO/ZnO under sonication treatment, reached 100 % degradation within 180 min for uptake every 30 min. Photodegradation was also analyzed using Langmuir-Hinshelwood kinetic model, resulting rate constant of 24.7 × 10⁻³ min⁻¹ and half-life time of 28.1 min at optimum treatment. Reusability of photocatalytic activity after 3 cycles showed only a tiny drop in catalytic efficiency. Meanwhile, it possesses high stability in catalytic activity and structure. The green-synthesized Fe₃O₄/rGO/ZnO potential as an environmentally friendly reusable photocatalyst for wastewater degradation.</p></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"7 4","pages":"Article 100235"},"PeriodicalIF":6.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588913324000243/pdfft?md5=04530423f411bf47920d639cc45934a9&pid=1-s2.0-S2588913324000243-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140279152","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}