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IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-12-01 DOI: 10.1016/S2588-9133(24)00083-8

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Simultaneous biomethane and hydrochar recovery from washed elephant dung: The effects of inoculum source, substrate to inoculum ratio, and hydrothermal temperature 从洗象粪中同时回收生物甲烷和烃类：接种物来源、底物与接种物比和热液温度的影响

IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-11-24 DOI: 10.1016/j.crcon.2024.100297

Chayanon Sawatdeenarunat , Boonya Charnnok , Rojapun Nirunsin , Sumate Chaiprapat , Chen-Yeon Chu

{"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 , Boonya Charnnok , Rojapun Nirunsin , Sumate Chaiprapat , 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 <sub>added</sub> 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}

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Catalytic gasification of a single coal char particle: An experimental and simulation study 单一煤炭颗粒的催化气化：实验和模拟研究

IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-11-22 DOI: 10.1016/j.crcon.2024.100296

Zhuoran Liu , Xingjun Wang , Qian Chen , Hongxia Li , Qinghua Guo , Guangsuo Yu , Haifeng Liu , Fuchen Wang

{"title":"Catalytic gasification of a single coal char particle: An experimental and simulation study","authors":"Zhuoran Liu , Xingjun Wang , Qian Chen , Hongxia Li , Qinghua Guo , Guangsuo Yu , Haifeng Liu , 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 K<sub>2</sub>CO<sub>3</sub> 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}

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Improved biohydrogen production from lactic acid bacteria contaminating substrates by enriched hydrogen-producing consortium with lactate-fermentation pathway 利用乳酸发酵途径的富集产氢联合体提高乳酸菌污染底物的生物制氢能力

IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-11-17 DOI: 10.1016/j.crcon.2024.100295

Phonsini Ngamnurak , Alissara Reungsang , Pensri Plangklang

{"title":"Improved biohydrogen production from lactic acid bacteria contaminating substrates by enriched hydrogen-producing consortium with lactate-fermentation pathway","authors":"Phonsini Ngamnurak , Alissara Reungsang , 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-H<sub>2</sub>/L and a maximum hydrogen production rate (HPR) of 87.17 ± 15.85 mL-H<sub>2</sub>/L.h were achieved under optimal conditions. Biohydrogen production from food waste using the co-inoculum was 1,137 mL-H<sub>2</sub>/L from non-autoclaved food waste, corresponding to 56.85 mL-H<sub>2</sub>/g-VS<sub>added</sub>. 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}

引用次数: 0

Parametric study on mechanical-press torrefaction of palm oil empty fruit bunch for production of biochar 棕榈油空果串机械压榨焙烧生产生物炭的参数研究

IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-10-18 DOI: 10.1016/j.crcon.2024.100285

Napat Kaewtrakulchai , Awat Wisetsai , Monrudee Phongaksorn , Chakkrit Thipydet , Bunjerd Jongsomjit , Navadol Laosiripojana , Nakorn Worasuwannarak , Jindarat Pimsamarn , Supachai Jadsadajerm

{"title":"Parametric study on mechanical-press torrefaction of palm oil empty fruit bunch for production of biochar","authors":"Napat Kaewtrakulchai , Awat Wisetsai , Monrudee Phongaksorn , Chakkrit Thipydet , Bunjerd Jongsomjit , Navadol Laosiripojana , Nakorn Worasuwannarak , Jindarat Pimsamarn , Supachai Jadsadajerm","doi":"10.1016/j.crcon.2024.100285","DOIUrl":"10.1016/j.crcon.2024.100285","url":null,"abstract":"<div><div>This study investigated the impact of varying temperatures and pressures during torrefaction under mechanical compression on the mass yield and chemical properties of torrefied empty fruit bunch (MTEFB). It also examined how these factors influenced the biochar derived from MTEFB. Experiments were conducted at temperatures ranging from 240 °C to 300 °C and mechanical pressures of 25, 50, and 75 MPa. The results indicated that at all temperatures above 280 °C, mass yields were significantly reduced, and higher mechanical pressures further accelerated thermal degradation. FTIR analysis revealed structural modifications, including dehydration, decarboxylation, and demethylation, particularly at elevated pressures. Elemental analysis showed an increase in carbon content to 55.68 % when MTEFB was prepared at 300 °C and 75 MPa. The HHV reached 23.11 MJ/kg, indicating improved energy yield. The proximate analysis demonstrated an increase in fixed carbon to 26.32 %, highlighting the influence of temperature and pressure on biochar characteristics. Further carbonization at 600 °C of MTEFB, which was prepared under mechanical-press torrefaction conditions at 300 °C with 75 MPa, produced biochar with enhanced yield and a more graphitic structure. The combination of mechanical-press torrefaction and subsequent carbonization presented a promising pathway for producing high-quality biochar and other solid carbon materials.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 3","pages":"Article 100285"},"PeriodicalIF":6.4,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient butanol production from sweet sorghum stem juice by a co-culture system at an optimum temperature: Insights from oxidation-reduction potential monitoring and pilot scale validation 在最佳温度下用共培养系统从甜高粱茎汁中高效生产丁醇：来自氧化还原电位监测和中试规模验证的见解

IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-09-16 DOI: 10.1016/j.crcon.2024.100284

Chalida Daengbussadee , Pattana Laopaiboon , Chyi-How Lay , Lakkana Laopaiboon

{"title":"Efficient butanol production from sweet sorghum stem juice by a co-culture system at an optimum temperature: Insights from oxidation-reduction potential monitoring and pilot scale validation","authors":"Chalida Daengbussadee , Pattana Laopaiboon , Chyi-How Lay , Lakkana Laopaiboon","doi":"10.1016/j.crcon.2024.100284","DOIUrl":"10.1016/j.crcon.2024.100284","url":null,"abstract":"<div><div>A two-stage co-culture approach was employed in an acetone-butanol-ethanol (ABE) fermentation. An obligate aerobic bacterium, <em>Arthrobacter</em> sp., was first grown for 6 h at 30 °C to create anaerobic conditions. Subsequently, <em>Clostridium beijerinckii</em> TISTR 1461 was inoculated and a fermentation was performed at 37 °C. To identify an intermediate temperature suitable for both microorganisms, their growth was examined at 30, 34, and 37 °C. <em>C.beijerinckii</em> exhibited the highest specific growth rate at 37 °C, while <em>Arthrobacter</em> sp. displayed similar growth rates at all tested temperatures. Butanol production from a synthetic medium (P2 medium) by <em>C. beijerinckii</em> at different temperatures using oxygen-free nitrogen (OFN) gas flushing as a control treatment revealed that fermentation at 37 °C gave the highest butanol concentration (<em>P<sub>B</sub></em>, 9.98 g/L). Consequently, 37 °C was chosen for butanol production from sweet sorghum stem juice (SSJ) by co-culture of these two microorganisms in 1-L screw–capped bottles. Compared to the control treatment, higher <em>P<sub>B</sub></em> (11.38 g/L), yield (<em>Y<sub>B/S</sub></em>, 0.37 g/g) and productivity (<em>Q<sub>B</sub></em>, 0.24 g/L·h) were achieved using the co-culture system. These results were further confirmed by monitoring the oxidation–reduction potential (ORP) during ABE fermentation in a 2-L stirred-tank bioreactor (STR). Moreover, when the co-culture fermentation at 37 °C was scaled up in a 30-L STR, the <em>P<sub>B</sub></em>, <em>Y<sub>B/S</sub></em> and <em>Q<sub>B</sub></em> values were comparable to those obtained in the 2-L STR. Therefore, co-culture fermentation of <em>Arthrobacter</em> sp. and <em>C.beijerinckii</em> TISTR 1461 at 37 °C represents a promising method for large-scale butanol production.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 2","pages":"Article 100284"},"PeriodicalIF":6.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Study on supercritical water regeneration of bio-based activated carbon saturated with acid red G 饱和酸红G的生物基活性炭超临界水再生研究

IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-09-11 DOI: 10.1016/j.crcon.2024.100283

Yaling Mu , Zitong Zhuang , Kun Jiang , Yimeng Wei , Anjun Meng , Hui Jin

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IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-09-01 DOI: 10.1016/S2588-9133(24)00071-1

引用次数: 0

Optimizing bioethanol production from sweet sorghum stem juice under very high gravity fermentation and temperature stress conditions 高重力发酵和温度胁迫条件下甜高粱茎汁生产生物乙醇的优化研究

IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-08-30 DOI: 10.1016/j.crcon.2024.100274

Phon Thatiyamanee , Pattana Laopaiboon , Lakkana Laopaiboon

{"title":"Optimizing bioethanol production from sweet sorghum stem juice under very high gravity fermentation and temperature stress conditions","authors":"Phon Thatiyamanee , Pattana Laopaiboon , 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 × 10<sup>8</sup>   <!-->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<sub>E</sub></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<sub>E</sub></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}

引用次数: 0

Enhancement of biohythane production from palm oil mill effluent by Thermoanaerobacterium thermosaccharolyticum PSU-2 and methanogenic mixed cultures using a thermophilic two-ring bioreactor 热厌氧菌PSU-2和产甲烷混合培养在嗜热双环生物反应器中提高棕榈油厂废水中生物乙烷的产量

IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2024-08-28 DOI: 10.1016/j.crcon.2024.100273

Supattra In-chan , Chonticha Mamimin , Nantharat Phruksaphithak , Sompong O-Thong

{"title":"Enhancement of biohythane production from palm oil mill effluent by Thermoanaerobacterium thermosaccharolyticum PSU-2 and methanogenic mixed cultures using a thermophilic two-ring bioreactor","authors":"Supattra In-chan , Chonticha Mamimin , Nantharat Phruksaphithak , Sompong O-Thong","doi":"10.1016/j.crcon.2024.100273","DOIUrl":"10.1016/j.crcon.2024.100273","url":null,"abstract":"<div><div>A novel thermophilic two-ring bioreactor was employed to produce biohythane from palm oil mill effluent (POME) using <em>Thermoanaerobacterium thermosaccharolyticum</em> PSU-2 and thermophilic methanogenic mixed cultures. The reactor system demonstrated impressive performance, achieving hydrogen and methane yields of 113.3 ± 15.0 mL/g-VS and 473.0 ± 60.0 mL/g-VS, respectively, with a total biohythane composition of 4.3 % H<sub>2</sub>, 37.1 % CO<sub>2,</sub> and 58.6 % CH<sub>4</sub>. The process exhibited high treatment efficiency, with COD and VS removal efficiencies reaching 93.7 % and 84.3 %, respectively. Microbial community analysis revealed the crucial roles of various microorganisms in the biohythane production process. <em>Thermoclostridium</em> sp., <em>Thermoanaerobacterium</em> sp., and <em>Anaerobranca</em> sp. were identified as key players in hydrogen production, while <em>Bacteroides</em> sp. and <em>Methanobacterium</em> sp. were found to be essential for methane production. The optimization of operating conditions, including pH (5.0–8.0), temperature (55 °C), and hydraulic retention time (2 d for H<sub>2</sub> and 10 d for CH<sub>4</sub>), significantly enhanced biohythane production efficiency. The techno-economic analysis demonstrated the economic viability of the thermophilic two-ring bioreactor system, with a net present value of 4,186,000 USD, an internal rate of return of 82 %, and a payback period of 1.4 years. These findings highlight the potential of this innovative technology as a sustainable and economically attractive solution for treating POME and simultaneously producing renewable energy in the form of biohythane, contributing to the sustainable development of the palm oil industry and the mitigation of greenhouse gas emissions.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 3","pages":"Article 100273"},"PeriodicalIF":6.4,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0