Chemical Engineering and Processing - Process Intensification最新文献_第5页

An Interview with Prof. Panagiota Angeli 专访 Panagiota Angeli 教授

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.109910

Enrique A. López-Guajardo

引用次数: 0

Investigation of gas-liquid mass transfer in slurry systems driven by the coaxial mixer 同轴搅拌器驱动泥浆系统中的气液传质研究

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.110039

Zilong Xu , Zhe Li , Wenda Xu , Lixiang Wan , Jiyong Kuang , Baoqing Liu

{"title":"Investigation of gas-liquid mass transfer in slurry systems driven by the coaxial mixer","authors":"Zilong Xu , Zhe Li , Wenda Xu , Lixiang Wan , Jiyong Kuang , Baoqing Liu","doi":"10.1016/j.cep.2024.110039","DOIUrl":"10.1016/j.cep.2024.110039","url":null,"abstract":"<div><div>The coaxial mixer was applied to the gas-liquid mass transfer process in slurry systems containing up to 8 vol% solids. The effects of impeller type, impeller speed, solid content, and gas flow rate were examined, and a correlation for the volumetric mass transfer coefficient was established. The findings indicate that at identical impeller speeds, the combination of an anchor and Rushton turbine exhibited the highest volumetric mass transfer coefficient and gas hold-up among coaxial mixers. However, when the pitched blade turbine with a down-pumping direction was utilized as the inner impeller, the coaxial mixer demonstrated superior performance under the same power consumption conditions. Additionally, the lower anchor speed was found to improve gas-liquid mass transfer, whereas a higher speed would lead to poor dispersion of gas phase, thereby deteriorating the performance of coaxial mixers. Increasing solid content caused a continuous decline in both the volumetric mass transfer coefficient and gas hold-up, while a rise in gas flow rate had the positive effect. Finally, the correlation developed for the volumetric mass transfer coefficient in slurry systems showed a deviation of less than 20% between predicted and measured values.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"205 ","pages":"Article 110039"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

An Interview with Professor Prof. Liang Zhao 专访赵亮教授

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.110012

Liang Zhao

引用次数: 0

An Interview with Associate Professor Dr. Kanokwan Ngaosuwan 专访副教授 Kanokwan Ngaosuwan 博士

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.109912

Kanokwan Ngaosuwan

引用次数: 0

An Interview with Dr. Bettina Muster-Slawitsch 采访贝蒂娜-穆斯特-斯拉维茨博士

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.109916

Enrique A. López-Guajardo

引用次数: 0

Supercritical carbon dioxide as solvent for manufacturing of ibuprofen loaded gelatine sponges with enhanced performance 以超临界二氧化碳为溶剂生产性能更佳的布洛芬明胶海绵

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-11-01 DOI: 10.1016/j.cep.2024.110038

Senlin Li , Yifan Zheng , Zhihao Zhang , Shengao Xu , Yuan Pu , Dan Wang

引用次数: 0

Comprehensive study on copper adsorption using an innovative graphene carbonate sand composite adsorbent: Batch, fixed-bed columns, and CFD modeling insights 使用创新型碳酸石墨烯砂复合吸附剂进行铜吸附的综合研究：批处理、固定床柱和 CFD 建模的启示

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-10-31 DOI: 10.1016/j.cep.2024.110047

H. Omdehghiasi , A. Yeganeh-Bakhtiary , A.H. Korayem

{"title":"Comprehensive study on copper adsorption using an innovative graphene carbonate sand composite adsorbent: Batch, fixed-bed columns, and CFD modeling insights","authors":"H. Omdehghiasi , A. Yeganeh-Bakhtiary , A.H. Korayem","doi":"10.1016/j.cep.2024.110047","DOIUrl":"10.1016/j.cep.2024.110047","url":null,"abstract":"<div><div>This study focused on an innovative graphene carbonate sand composite adsorbent, synthesized from carbonated porous sand and sucrose as raw materials, for the removal of copper ions via the adsorption process. The characteristics of this adsorbent are determined through comprehensive experiments and numerical simulations in batch and fixed-bed column conditions, which has not been extensively explored. Extensive experimentation demonstrated a remarkable 100 % removal efficiency under optimal conditions, which included a copper ion concentration of 3 g/L, a contact time of 10 h, and an adsorbent dosage of 35 g/L. The adsorption kinetics and isotherm results exhibited that the Elovich model (<em>R</em>² = 0.998) and the Langmuir model (<em>R</em>² = 0.996 for linear with <em>q<sub>m</sub></em>=123.91 mg g<sup>-1</sup>, and <em>R</em>² = 0.993 for nonlinear fitting) more effectively described the adsorption of copper onto the adsorbent. In the fixed-bed column studies, among the well-known analytical models, the Log-Gompertz model showed better compatibility (<em>R</em><sup>2</sup> = 0.97∼0.99) between breakthrough curves with experimental results for various copper inlet concentrations. Also, numerical results obtained using computational fluid dynamics and mass transfer simulations with the linear driving force model were successfully validated by experimental results, particularly in the initial and transition zones of the breakthrough curve.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110047"},"PeriodicalIF":3.8,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Experiment on selective dynamic extraction of germanium by ultrasonic enhanced N235 extraction resin under complex system 超声波增强型 N235 提取树脂在复杂体系下选择性动态提取锗的实验

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-10-30 DOI: 10.1016/j.cep.2024.110042

Shixiong Peng , Qifei Pei , Zhanqing Lu , Hongying Xia , Linqing Dai , Yingjie Xu , Libo Zhang

{"title":"Experiment on selective dynamic extraction of germanium by ultrasonic enhanced N235 extraction resin under complex system","authors":"Shixiong Peng , Qifei Pei , Zhanqing Lu , Hongying Xia , Linqing Dai , Yingjie Xu , Libo Zhang","doi":"10.1016/j.cep.2024.110042","DOIUrl":"10.1016/j.cep.2024.110042","url":null,"abstract":"<div><div>Germanium plays an irreplaceable role in the field of modern high-tech materials and is an important strategic metal resource. N235 extraction resin was used to selectively extract [Ge(C<sub>4</sub>O<sub>6</sub>H<sub>4</sub>)<sub>3</sub>]<sup>2-</sup>. Under the condition of ultrasonic power at 120 W in a water bath, the extraction rate of germanium was 97.32 %. The extraction rate of zinc was 2.37 % under the conditions of a three-stage solid phase extraction column in series (single-stage filling N235 extraction resin 0.8 g), reaction temperature 25 °C, tartaric acid concentration of 2.0 g/L, and the dwell time is 4.1min. The saturated adsorption capacity of the resin is 51.90 mg/g. The extraction rate of germanium increased by 14.4 % under ultrasonic-assisted strengthening conditions. The [Ge(C<sub>4</sub>O<sub>6</sub>H<sub>4</sub>)<sub>3</sub>]<sup>2-</sup> can be separated from the resin by NaOH solution. The desorption rate of germanium was 94.12 % under the condition of water bath ultrasonic power of 120W, 30 ml concentration of 3.5 mol/L NaOH solution, and the dwell time is 5.2min. Under the optimum conditions, the extraction rate of N235 extraction resin was 85.23 % after repeated regeneration five times. The results demonstrate that the extraction resin exhibits high selectivity and reproducibility in complex systems, presenting a new method for extracting germanium under complex conditions.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110042"},"PeriodicalIF":3.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Detailed mechanistic insights into photocatalytic dye degradation via electronic and agricultural waste derived catalysts 电子和农业废弃物衍生催化剂光催化染料降解的详细机理见解

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-10-30 DOI: 10.1016/j.cep.2024.110046

Swagata Pal, Dhanya Vishnu

{"title":"Detailed mechanistic insights into photocatalytic dye degradation via electronic and agricultural waste derived catalysts","authors":"Swagata Pal, Dhanya Vishnu","doi":"10.1016/j.cep.2024.110046","DOIUrl":"10.1016/j.cep.2024.110046","url":null,"abstract":"<div><div>The textile and dyeing industry is utilizing photocatalytic dye degradation methods to combat dye contamination, primarily focusing on agricultural and electronic waste. Green synthesis methods, which use environmentally friendly technologies, are being developed to repurpose materials for sustainable cultivation. The emphasis is on reactive oxygen species (ROS) such as superoxide anions and hydroxyl radicals, which cause the oxidative breakdown of dye molecules following waste-derived photocatalyst activation by visible light. Employing a comprehensive literature review methodology, the study examines the utilization of waste-derived photocatalysts activated by visible light for dye degradation. It explores the role of ROS in the oxidative breakdown of dye molecules and the development of green synthesis methods using environmentally friendly technologies. The review highlights smart strategies for efficient catalyst design, increased solar light use, and more productive manufacturing in waste materials for photocatalysis, promoting sustainable city development, environmental pollution reduction, and a reliable waste-to-energy technology based on circular economy and green chemistry principles.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"206 ","pages":"Article 110046"},"PeriodicalIF":3.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Intensified liquid-liquid extractions by continuous flows in small channels 通过小通道中的连续流强化液-液萃取

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-10-29 DOI: 10.1016/j.cep.2024.110045

Panagiota Angeli

引用次数: 0