Chemical Engineering Science最新文献

英文中文

Application of a multi-objective optimization framework in cement clinker calcination system: An adaptive evolutionary algorithm with robust selection technique

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-04 DOI: 10.1016/j.ces.2025.121207

Xiaochen Hao, Liteng An, Xunian Yang, Zhipeng Zhang, Hong Liu

Optimizing the cement clinker calcination (CCC) system is crucial for sustainability, but studies on enhancing coal and electricity efficiency and clinker quality under dynamic conditions are limited. Therefore, this study introduces a multi-objective optimization framework using the self-adaptive adjusted evolutionary operators-differential evolution (SaAEO-DE) algorithm for the enhancement of the system performance. Firstly, a three-objective optimization framework is established, selecting seven process operational parameters as decision variables. Then, the SaAEO-DE algorithm, which adjusts evolutionary operators based on the population’s evolutionary state during the population iteration process, is used to obtain a Pareto optimal solution set. By selecting the most robust solution, the robust optimal solution technique (ROST) further ensures the stability of system performance in complex environments. Finally, the effectiveness and superiority of the multi-objective optimization method were validated by comparing the SaAEO-DE algorithm with classical multi-objective optimization algorithms, using actual production data from a cement plant in North China.

{"title":"Application of a multi-objective optimization framework in cement clinker calcination system: An adaptive evolutionary algorithm with robust selection technique","authors":"Xiaochen Hao, Liteng An, Xunian Yang, Zhipeng Zhang, Hong Liu","doi":"10.1016/j.ces.2025.121207","DOIUrl":"10.1016/j.ces.2025.121207","url":null,"abstract":"<div><div>Optimizing the cement clinker calcination (CCC) system is crucial for sustainability, but studies on enhancing coal and electricity efficiency and clinker quality under dynamic conditions are limited. Therefore, this study introduces a multi-objective optimization framework using the self-adaptive adjusted evolutionary operators-differential evolution (SaAEO-DE) algorithm for the enhancement of the system performance. Firstly, a three-objective optimization framework is established, selecting seven process operational parameters as decision variables. Then, the SaAEO-DE algorithm, which adjusts evolutionary operators based on the population’s evolutionary state during the population iteration process, is used to obtain a Pareto optimal solution set. By selecting the most robust solution, the robust optimal solution technique (ROST) further ensures the stability of system performance in complex environments. Finally, the effectiveness and superiority of the multi-objective optimization method were validated by comparing the SaAEO-DE algorithm with classical multi-objective optimization algorithms, using actual production data from a cement plant in North China.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"307 ","pages":"Article 121207"},"PeriodicalIF":4.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coating NiAl-LDH nanosheets on heptazine-based crystalline carbon nitride nanosheets for boosted CO2 photoreduction

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-04 DOI: 10.1016/j.ces.2025.121319

Min Zhou, Xiaoyong Du, Weilin Li, Xinyan Xiao, Huaming Li, Weidong Shi, Zhifeng Jiang

Heptazine-based crystalline carbon nitride (HCCN) is a promising candidate for photocatalytic CO₂ reduction because of its low toxicity and excellent chemical/electronic properties. However, pristine HCCN nanosheets show low catalytic activities due to their poor intrinsic conductivity and serious charge recombination. Herein, an efficient cocatalyst of NiAl-layered double hydroxide (LDH) nanosheets was coated on the HCCN surface via a facile electrostatic self-assembly method. The charge-transfer resistance can be modulated through the delicate design of the close contact that forms between LDH and HCCN nanosheets. Experimental characterizations reveal that the electrostatic potential (EP) is responsible for such remarkable charge kinetics, which makes it easier for them to participate in the following photoreactions. The composite of LDH/HCCN exhibits an enhanced photocatalytic CO₂ reduction rate of 42.2 μmol g⁻¹ h⁻¹ with respect to pristine HCCN and LDH counterparts. This work provides an avenue into efficient charge transfer at the composite interface, offering an essential potential for engineering cocatalysts in artificial photosynthesis.

{"title":"Coating NiAl-LDH nanosheets on heptazine-based crystalline carbon nitride nanosheets for boosted CO2 photoreduction","authors":"Min Zhou, Xiaoyong Du, Weilin Li, Xinyan Xiao, Huaming Li, Weidong Shi, Zhifeng Jiang","doi":"10.1016/j.ces.2025.121319","DOIUrl":"10.1016/j.ces.2025.121319","url":null,"abstract":"<div><div>Heptazine-based crystalline carbon nitride (HCCN) is a promising candidate for photocatalytic CO<sub>2</sub> reduction because of its low toxicity and excellent chemical/electronic properties. However, pristine HCCN nanosheets show low catalytic activities due to their poor intrinsic conductivity and serious charge recombination. Herein, an efficient cocatalyst of NiAl-layered double hydroxide (LDH) nanosheets was coated on the HCCN surface <em>via</em> a facile electrostatic self-assembly method. The charge-transfer resistance can be modulated through the delicate design of the close contact that forms between LDH and HCCN nanosheets. Experimental characterizations reveal that the electrostatic potential (EP) is responsible for such remarkable charge kinetics, which makes it easier for them to participate in the following photoreactions. The composite of LDH/HCCN exhibits an enhanced photocatalytic CO<sub>2</sub> reduction rate of 42.2 μmol g<sup>−1</sup> h<sup>−1</sup> with respect to pristine HCCN and LDH counterparts. This work provides an avenue into efficient charge transfer at the composite interface, offering an essential potential for engineering cocatalysts in artificial photosynthesis.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121319"},"PeriodicalIF":4.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143124609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of microstructures on liquid spreading on inclined plates: A CFD based study

IF 4.7 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-04 DOI: 10.1016/j.ces.2025.121317

Christopher Dechert, Eugeny Y. Kenig

Efficiency of separation columns strongly depends on the geometrical properties of column internals. The surface of structured packing is often covered by microstructures, as this is expected to enhance separation. Since the size of the interfacial area between the contacting fluids is a key factor for the separation efficiency, the influence of microstructures on the packing surface wetting has to be understood. In this work, several microstructures applied on inclined plates are studied by CFD methods to investigate their influence on the liquid spreading over the surface. Liquid flow rate and momentum as well as the size, shape and orientation of the microstructures are varied. Along with size and shape, especially the orientation of microstructures is found to have the strongest influence on the liquid flow pattern and the size of the wetted area. Therefore, a reasonable adjustment of the microstructure and its orientation can increase the interfacial area and hence the efficiency of the column.

引用次数: 0

Width distribution and wave characteristics of drainage film formed by jet impingement on a vertical wall

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-04 DOI: 10.1016/j.ces.2025.121316

Qiuxiang Chen, Hongfei Hu, Xinying Wang, Qiang Li, Haijun Wang

Liquid films generated by jet impingement on vertical walls are commonly encountered in various industrial applications, including cleaning, aerospace, and nuclear reactors. In these applications, an understanding of the distribution patterns and wave characteristics of the drainage film is crucial. In this study, an experimental apparatus was constructed to investigate the flow behavior of drainage films formed by jet impingement on a vertical wall. The width distribution of the drainage film, the spatial variation of the average liquid film thickness, and the transient wave characteristics across different jet Reynolds numbers were investigated. It was observed that the drainage film transitions from turbulent to laminar flow as the flow distance increases. An empirical correlation equation was developed to describe the relationship between film width, flow distance, and jet mass flow rate. The drainage film comprises a thin layer zone and a raised zone, with the liquid film thickness in the thin layer zone being uniformly distributed across the same flow cross-section. Under varying jet Reynolds numbers, the liquid film thickness in the thin layer zone eventually stabilizes at approximately 0.5 mm. With a flow distance from 4d to 28d, liquid film fluctuations in the thin layer zone exhibit a transition from violent to smooth, then to violent. Fluctuations in the thin layer zone are predominantly characterized by ripple waves. For Re_j ≥ 6166, fluctuations in the raised zone shift from being dominated by disturbance waves to ripple waves as the flow distance increases.

{"title":"Width distribution and wave characteristics of drainage film formed by jet impingement on a vertical wall","authors":"Qiuxiang Chen, Hongfei Hu, Xinying Wang, Qiang Li, Haijun Wang","doi":"10.1016/j.ces.2025.121316","DOIUrl":"10.1016/j.ces.2025.121316","url":null,"abstract":"<div><div>Liquid films generated by jet impingement on vertical walls are commonly encountered in various industrial applications, including cleaning, aerospace, and nuclear reactors. In these applications, an understanding of the distribution patterns and wave characteristics of the drainage film is crucial. In this study, an experimental apparatus was constructed to investigate the flow behavior of drainage films formed by jet impingement on a vertical wall. The width distribution of the drainage film, the spatial variation of the average liquid film thickness, and the transient wave characteristics across different jet Reynolds numbers were investigated. It was observed that the drainage film transitions from turbulent to laminar flow as the flow distance increases. An empirical correlation equation was developed to describe the relationship between film width, flow distance, and jet mass flow rate. The drainage film comprises a thin layer zone and a raised zone, with the liquid film thickness in the thin layer zone being uniformly distributed across the same flow cross-section. Under varying jet Reynolds numbers, the liquid film thickness in the thin layer zone eventually stabilizes at approximately 0.5 mm. With a flow distance from 4<em>d</em> to 28<em>d</em>, liquid film fluctuations in the thin layer zone exhibit a transition from violent to smooth, then to violent. Fluctuations in the thin layer zone are predominantly characterized by ripple waves. For <em>Re<sub>j</sub></em> ≥ 6166, fluctuations in the raised zone shift from being dominated by disturbance waves to ripple waves as the flow distance increases.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121316"},"PeriodicalIF":4.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Critical role of copper ions and active hydrogen for fast reduction of 4-nitrophenol using CuS mesh

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-03 DOI: 10.1016/j.ces.2025.121303

Min Gyu Lee , Rengaraj Selvaraj , Younghun Kim

This study investigated the catalytic performance of CuS mesh in the reduction of 4-nitrophenol (4NP) to 4-aminophenol (4AP) under various conditions using sonication-treated CuS mesh. While CuS mesh exhibited a reaction-rate constant of 0.082 min⁻¹, sonication-treated CuS mesh achieved a significantly higher constant of 0.512 min⁻¹. The reduction rate decreased under oxygen-bubbling conditions, confirming the importance of active hydrogen species. This study also explored the effects of different metal ions, including Cu, Ag, Au, Ni, Pd, Pt, Co, Zn, Pb, and Cr. Among them, metals such as Cu, Ag, Au, Pd, and Pt, which exhibit positive standard reduction potentials favorable for electron transfer, were found to effectively catalyze the 4NP reduction. These findings suggest that optimizing the structural configuration of the CuS mesh and leveraging the dual catalytic roles of Cu ions and nanoparticles can help develop more efficient catalysts for environmental remediation and chemical synthesis.

引用次数: 0

Averting irreversible transition metal migration in O3-type NaCrO2 via oxygen vacancy defects to enable durable sodium storage

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-03 DOI: 10.1016/j.ces.2025.121308

Huizi Li , Chenhan Lin , Xiangcong Meng , Yuanqi Yang , Jiaming Deng , Guojie Wu , Jun Liu , Zhicong Shi , Liying Liu

Layered transition-metal oxides (Na_xTMO₂) are commonly studied as cathodes owing to high theoretical specific capacity and wide Na⁺ diffusion channel. The irreversible TM migration during Na⁺ de/insertion and the low actual energy density, however, are still the challenging obstacles to the practical application. NaCrO₂ (NCO), one of the typical O3-type layered oxides, has been synthesized via a spray drying-assisted solid-state reaction in this study. It experiences a highly reversible O3_hex-O’3_mon-P’3_mon phase transition during charge/discharge processes, which is primarily attributed to the effectively averted irreversible chromium migration via the in situ constructed oxygen vacancies and the accurately regulated charge cut-off voltage. Oxygen vacancies regulated NCO exhibits outstanding cyclability with capacity retention of 81.9 % after 1000 cycles at 5C in a relatively wide voltage range of 2.3–3.7 V. Our investigation ameliorates the cyclability and energy density of NCO and promotes the potential industrial application for sodium-storage layered oxide cathodes.

{"title":"Averting irreversible transition metal migration in O3-type NaCrO2 via oxygen vacancy defects to enable durable sodium storage","authors":"Huizi Li , Chenhan Lin , Xiangcong Meng , Yuanqi Yang , Jiaming Deng , Guojie Wu , Jun Liu , Zhicong Shi , Liying Liu","doi":"10.1016/j.ces.2025.121308","DOIUrl":"10.1016/j.ces.2025.121308","url":null,"abstract":"<div><div>Layered transition-metal oxides (Na<sub>x</sub>TMO<sub>2</sub>) are commonly studied as cathodes owing to high theoretical specific capacity and wide Na<sup>+</sup> diffusion channel. The irreversible TM migration during Na<sup>+</sup> de/insertion and the low actual energy density, however, are still the challenging obstacles to the practical application. NaCrO<sub>2</sub> (NCO), one of the typical O3-type layered oxides, has been synthesized via a spray drying-assisted solid-state reaction in this study. It experiences a highly reversible O3<sub>hex</sub>-O’3<sub>mon</sub>-P’3<sub>mon</sub> phase transition during charge/discharge processes, which is primarily attributed to the effectively averted irreversible chromium migration via the in situ constructed oxygen vacancies and the accurately regulated charge cut-off voltage. Oxygen vacancies regulated NCO exhibits outstanding cyclability with capacity retention of 81.9 % after 1000 cycles at 5C in a relatively wide voltage range of 2.3–3.7 V. Our investigation ameliorates the cyclability and energy density of NCO and promotes the potential industrial application for sodium-storage layered oxide cathodes.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121308"},"PeriodicalIF":4.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction and validation of the Master-plots method for the thermal cracking kinetic mechanism of solvent-swollen polypropylene

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-02 DOI: 10.1016/j.ces.2025.121304

Shanglong Zhang , Qiuxiang Yao , Lei He , Wei Wang , Linyang Wang , Duo Ma , Xu Cheng , Ming Sun

The current research on the pretreatment of polypropylene before thermal cracking and the precise kinetic mechanism function is insufficient. In this study, the thermal cracking characteristics of solvent-swollen polypropylene in toluene, benzene, and tetrahydrofuran were investigated using a thermogravimetric analyzer. A kinetic study of the samples was conducted employing iso-conversional methods, the kinetic compensation effect, the Master-plots method, and the Popescu method. The results demonstrated that the solvent swelling treatment facilitated the thermal cracking of polypropylene at lower temperatures. The average apparent activation energy values of the samples obtained by the Starink (STK) method ranged from 237.66 to 257.98kJ/mol. The kinetic mechanism function of polypropylene at high conversion differs from that at low conversion. For PP-MB, the kinetic mechanism function follows a three-dimensional diffusion model (D5) in the 0.1–0.5 conversion range and lies between a one-dimensional diffusion model (D1) and a two-dimensional diffusion-cylindrical symmetry model (D2) in the 0.5–0.9 conversion range.

{"title":"Correction and validation of the Master-plots method for the thermal cracking kinetic mechanism of solvent-swollen polypropylene","authors":"Shanglong Zhang , Qiuxiang Yao , Lei He , Wei Wang , Linyang Wang , Duo Ma , Xu Cheng , Ming Sun","doi":"10.1016/j.ces.2025.121304","DOIUrl":"10.1016/j.ces.2025.121304","url":null,"abstract":"<div><div>The current research on the pretreatment of polypropylene before thermal cracking and the precise kinetic mechanism function is insufficient. In this study, the thermal cracking characteristics of solvent-swollen polypropylene in toluene, benzene, and tetrahydrofuran were investigated using a thermogravimetric analyzer. A kinetic study of the samples was conducted employing <em>iso</em>-conversional methods, the kinetic compensation effect, the Master-plots method, and the Popescu method. The results demonstrated that the solvent swelling treatment facilitated the thermal cracking of polypropylene at lower temperatures. The average apparent activation energy values of the samples obtained by the Starink (STK) method ranged from 237.66 to 257.98kJ/mol. The kinetic mechanism function of polypropylene at high conversion differs from that at low conversion. For PP-MB, the kinetic mechanism function follows a three-dimensional diffusion model (D5) in the 0.1–0.5 conversion range and lies between a one-dimensional diffusion model (D1) and a two-dimensional diffusion-cylindrical symmetry model (D2) in the 0.5–0.9 conversion range.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121304"},"PeriodicalIF":4.1,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic study on the solid–liquid diazo coupling reaction with time-varying viscosity

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-02 DOI: 10.1016/j.ces.2025.121286

Hui-Long Wei , Hong-Ji Lu , Yuan-Hai Su , De-Tao Pan , Zheng-Hong Luo

Kinetic characteristics of the solid–liquid reaction system with time-varying viscosity were studied by using the diazo coupling between 2-naphthol and diazo salt as a template reaction. The kinetic experiments were conducted in a temperature range of 298–313 K and a stirring speed of 100–600 rpm. The rheological experiments reveal that the reaction system exhibits a non-Newtonian shear thinning feature. Excluding the internal diffusion influence in advance, the external diffusion control model with considering the influence of the varying viscosity caused by the promotion of the reaction extent on the diffusion coefficient was established to interpret the kinetic data. In addition, a chemical reaction control model was used to check the rate-controlling mechanism. The overall rate constant and diffusion activation energy were further calculated based on the experimental results. Finally, the effects of shear rate and temperature on the reaction were discussed in detail.

引用次数: 0

Enhancing *CO intermediate coverage on the CuAlOx catalyst for the CO2 electroreduction to multicarbon products

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-02 DOI: 10.1016/j.ces.2025.121306

Zhitong Zhang , Rongzhen Chen , Wenxuan Zhang , Yuhang Li , Chunzhong Li

Cu-based electrochemical catalysts are of great potential in converting CO₂ to energy-intensive multicarbon products by utilizing sustainable energy. While there exist challenges in obtaining high selectivity for specific products due to the other unavoidable competitive reaction pathways. Herein, we incorporate the Al element into Cu-based oxide by the simple wet chemical method to obtain the Cu-Al bimetallic oxide with Cu⁺/Cu⁰⁺ active sites. The electrocatalytic measurement shows that the Cu₉₀Al₁₀O_x catalyst possesses good electrocatalytic capacity with the highest C₂ Faradic efficiency of 79.3 % at 300 mA cm⁻². It is demonstrated that the biggest ratio of FE_C2: FE_C1 is 4.82 in Cu₉₀Al₁₀O_x, which is about 4 times of CuO_x (FE_C2: FE_C1 = 1.24). The in situ attenuated total reflectance surface-enhanced infrared absorption spectroscopy measurements exhibit that the catalyst can modulate the binding energy and enhance the adsorption ability of the *CO intermediate, which promotes the reaction pathway of multicarbon products and affects the intrinsic catalytic ability.

{"title":"Enhancing *CO intermediate coverage on the CuAlOx catalyst for the CO2 electroreduction to multicarbon products","authors":"Zhitong Zhang , Rongzhen Chen , Wenxuan Zhang , Yuhang Li , Chunzhong Li","doi":"10.1016/j.ces.2025.121306","DOIUrl":"10.1016/j.ces.2025.121306","url":null,"abstract":"<div><div>Cu-based electrochemical catalysts are of great potential in converting CO<sub>2</sub> to energy-intensive multicarbon products by utilizing sustainable energy. While there exist challenges in obtaining high selectivity for specific products due to the other unavoidable competitive reaction pathways. Herein, we incorporate the Al element into Cu-based oxide by the simple wet chemical method to obtain the Cu-Al bimetallic oxide with Cu<sup>+</sup>/Cu<sup>0+</sup> active sites. The electrocatalytic measurement shows that the Cu<sub>90</sub>Al<sub>10</sub>O<sub>x</sub> catalyst possesses good electrocatalytic capacity with the highest C<sub>2</sub> Faradic efficiency of 79.3 % at 300 mA cm<sup>−2</sup>. It is demonstrated that the biggest ratio of FE<sub>C2</sub>: FE<sub>C1</sub> is 4.82 in Cu<sub>90</sub>Al<sub>10</sub>O<sub>x</sub>, which is about 4 times of CuO<sub>x</sub> (FE<sub>C2</sub>: FE<sub>C1</sub> = 1.24). The <em>in situ</em> attenuated total reflectance surface-enhanced infrared absorption spectroscopy measurements exhibit that the catalyst can modulate the binding energy and enhance the adsorption ability of the *CO intermediate, which promotes the reaction pathway of multicarbon products and affects the intrinsic catalytic ability.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121306"},"PeriodicalIF":4.1,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pilot-scale study of CO2 enrichment effects on anaerobic digestion performance CO2富集对厌氧消化性能影响的中试研究

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science

Pub Date : 2025-02-01 DOI: 10.1016/j.ces.2024.121070

Lucie Castel , Guillaume Cazaudehore , Jean-Baptiste Beigbeder , Rémy Guyoneaud , Christine Peyrelasse

Recent studies on anaerobic digestion (AD) off-gas valorization have explored ways to enhance biological methane production by enriching the digestate with carbon dioxide (CO₂). This approach aims to increase AD profitability by biological conversion of CO₂ to methane (CH₄). However, existing research lacks consensus on the effectiveness of CO₂ injection, with the underlying biological mechanisms remaining poorly understood.

This study investigates the impact of CO₂ injection on AD in a pilot-scale setup using standard on-farm feedstocks. Two pilot-scale reactors were operated in parallel: one serving as a control, and the other featuring CO₂ injection through a bubble column with digestate recirculation. Results showed no demonstrable improvement in biomethane yields from CO₂ enrichment. In fact, a high-rate CO₂ injection had a detrimental effect on methane production.

近年来对厌氧消化（AD）废气增值的研究探索了通过向消化池中富集二氧化碳（CO2）来提高生物甲烷产量的方法。该方法旨在通过将二氧化碳生物转化为甲烷（CH4）来提高AD的盈利能力。然而，现有的研究对二氧化碳注射的有效性缺乏共识，其潜在的生物学机制仍然知之甚少。本研究在使用标准农场原料的中试装置中调查了二氧化碳注入对AD的影响。两个中试反应器平行运行：一个作为控制，另一个通过带消化液再循环的气泡塔注入二氧化碳。结果表明，CO2富集对生物甲烷产量没有明显的改善。事实上，高速率的二氧化碳注入对甲烷产量有不利影响。

引用次数: 0

首页上一页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Chemical Engineering Science

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀