International Journal of Chemical Reactor Engineering最新文献_第10页

Size-dependent growth kinetics model for potassium chloride from seeded chloride solution 种子氯溶液中氯化钾的粒径依赖性生长动力学模型

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-09 DOI: 10.1515/ijcre-2022-0142

Dan Zheng, Jiao Wang, Yueqiu Shen, Meihui Yang, Menglin Xu, Yulan Ma, Yongqi Tian, Xieping Wu

{"title":"Size-dependent growth kinetics model for potassium chloride from seeded chloride solution","authors":"Dan Zheng, Jiao Wang, Yueqiu Shen, Meihui Yang, Menglin Xu, Yulan Ma, Yongqi Tian, Xieping Wu","doi":"10.1515/ijcre-2022-0142","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0142","url":null,"abstract":"Abstract It was widely known that crystallization kinetics are the basis for crystallization behavior and crystallizer scale-up design. Cooling crystallization of potassium chloride was an essential unit operation in recycling industry. Some researchers have proposed the strategy of adding seed crystals for the intermittent cooling crystallization process to control the particle size and distribution of the target product. This paper studied the complex function relation between particle size and growth rate of KCI in the crystallization process in a continuous mixed-suspension mixed-product-removal (MSMPR) crystallizer at a steady state. Using the crystallization kinetics data, the mathematical models of coupling crystallization were established based on the population balance equations and mass balance equations. Since population density distributions of products behave multiform under different conditions, based on diffusion theory. The growth rate was obtained by a least square method for the multivariate linear regression, and the reliability of the kinetics model was validated experimentally. Fitting results indicated that some classical models, including several size-independent growth models and size-dependent growth models, such as Bransom, C-R, MJ2, ASL, and MJ3, could not model the size-dependent growth accurately. Based on this situation, an exponential growth model was proposed and confirmed to describe the size-dependent growth behavior. It was found that the model parameters have definite meanings and were strongly related to particle size. Compared with the classical models, this model showed good pertinency and adaptability to experimental results when used to describe the population density distribution and the size-dependent growth rate of KCI. This research could provide a theoretical guide for optimizing the crystallization process and designing industrial crystallizers.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"801 - 813"},"PeriodicalIF":1.6,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42051114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Insights into kinetics and equilibrium of methylene blue adsorption onto β-cyclodextrin polymers 亚甲基蓝在β-环糊精聚合物上吸附的动力学和平衡研究

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-09 DOI: 10.1515/ijcre-2022-0118

Azrul Nurfaiz Mohd Faizal, M. A. Che Yunus, Asmadi Ali, M. Zaini

{"title":"Insights into kinetics and equilibrium of methylene blue adsorption onto β-cyclodextrin polymers","authors":"Azrul Nurfaiz Mohd Faizal, M. A. Che Yunus, Asmadi Ali, M. Zaini","doi":"10.1515/ijcre-2022-0118","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0118","url":null,"abstract":"Abstract The exclusive properties of β-cyclodextrin (β-CD) combined with its harmless characters making it as an interesting and potential carbon adsorbent for water pollutants removal via adsorption. This work was aimed at evaluating the kinetics and isotherm parameters of methylene blue dye adsorption onto β-CD polymers. The carbon polymers were prepared by citric acid cross-linking, followed by post-treatment with sodium p-toluenesulfinate. The adsorbents were characterized using TGA, BET and FTIR. The adsorption of methylene blue was studied at varying concentrations (5–300 mg/L) and contact times (10–2880 min), and the kinetics and isotherm models were employed to describe the adsorption data. The post-treated carbon polymer exhibits a greater specific surface of 16.6 m2/g. The maximum adsorption of methylene blue by cross-linked and post-treated β-CD adsorbents are 263 and 227 mg/g, respectively. The kinetics data fitted well into pseudo-first order model, indicating physical adsorption. The Boyd’s model showed that film diffusion may be the controlling mechanism. The equilibrium data of methylene blue adsorption for the two β-CD polymers obeyed Langmuir model. To conclude, β-CD is a promising adsorbent candidate for the treatment of dye wastewater.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"815 - 821"},"PeriodicalIF":1.6,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41875683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Sliding mode controller design based on simple closed loop set point experiment for higher order processes with dead time 基于简单闭环设定点实验的高阶死时间过程滑模控制器设计

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-07 DOI: 10.1515/ijcre-2022-0134

Mohammad Atif Siddiqui, Md. Nishat Anwar, Shahedul Haque Laskar

引用次数: 0

Robust model-based control of a packed absorption column for the natural gas sweetening process 天然气脱硫过程中填料吸收塔的鲁棒模型控制

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-07 DOI: 10.1515/ijcre-2022-0112

Jorge A. Romero-Bustamante, Brenda M. Zurita-Herrera, M. A. Gutiérrez-Limón, E. Hernandez‐Martinez

引用次数: 0

Reaction engineering of continuous crystallization of β-ammonium tetramolybdate in concentric structure reactor and its application 同心结构反应器中β-四钼酸铵连续结晶的反应工程及其应用

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-04 DOI: 10.1515/ijcre-2022-0145

Jiang-tao Li, Zhichao Li, Zhongwei Zhao, Xu-heng Liu, Xingyu Chen, Lihua He, Fenglong Sun, Ailiang Chen

{"title":"Reaction engineering of continuous crystallization of β-ammonium tetramolybdate in concentric structure reactor and its application","authors":"Jiang-tao Li, Zhichao Li, Zhongwei Zhao, Xu-heng Liu, Xingyu Chen, Lihua He, Fenglong Sun, Ailiang Chen","doi":"10.1515/ijcre-2022-0145","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0145","url":null,"abstract":"Abstract β-ammonium tetramolybdate [β-(NH4)2Mo4O13] is an important product of molybdenum metallurgy because of its uniform crystal structure and excellent thermal stability. The yield of molybdenum strip produced with β-(NH4)2Mo4O13 as raw material and various processing properties have been significantly improved. However, the crystallization process of β-(NH4)2Mo4O13 is very complex, including neutralization, polymerization, nucleation, and crystal growth stages, resulting in a variety of polymerization morphology. In this work, a concentric structure reactor was used to segment these stages with directional regulation of each stage. Residence time distribution (RTD) was used to evaluate the simulation of flow field characteristics in the concentric structure reactor. Determination of the influence of inlet-outlet positions, size and position of paddle, and baffle setting on the fluid behavior in a single tank suggested measures to improve the abnormal flow condition and reduce the dead zone volume fraction. In the concentric structure reactor, the dead zone volume fraction was only 2.36% when the clapboards were arranged alternately in an up-down design, using an inlet flow rate of 100 mL/min. β-(NH4)2Mo4O13 was prepared continuously by adding aqueous ammonia and product slurry for crystallization in the concentric structure reactor.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"779 - 791"},"PeriodicalIF":1.6,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46657619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Promotional effects of cerium and titanium on NiMn2O4 for selective catalytic reduction of NO by NH3 铈和钛对NiMn2O4选择性NH3催化还原NO的促进作用

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-04 DOI: 10.1515/ijcre-2022-0072

Sara Karkhaneh, Seyed Mahdi Latifi, E. Kashi, A. Salehirad

引用次数: 0

Development of a new rotating photocatalytic reactor for the degradation of hazardous pollutants 新型旋转光催化反应器降解有害污染物的研制

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-01 DOI: 10.1515/ijcre-2022-0084

I. Zelić, V. Tomašić, Z. Gomzi

{"title":"Development of a new rotating photocatalytic reactor for the degradation of hazardous pollutants","authors":"I. Zelić, V. Tomašić, Z. Gomzi","doi":"10.1515/ijcre-2022-0084","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0084","url":null,"abstract":"Abstract The aim of this study was to develop a new rotating photocatalytic reactor operating in recirculation mode with light sources placed outside the photoreactor vessel. The photoreactor with cylindrical geometry was equipped with four artificial lamps used to simulate solar irradiation (2.4% UVB and 12% UVA; 300–700 nm). The photocatalyst was immobilized on abrasive material used as a support and placed on the central (inner) photoreactor tube, which was connected to a power-driven shaft that allowed rotation at a desired speed. A suitable modification of the commercial TiO2 P25 photocatalyst was carried out to reduce its band gap energy and electron-hole recombination and to extend the visible light response range of TiO2. The main task of this research was to apply the basic principles of process intensification methodology, i.e. to explore the influence of rotational hydrodynamics, which allows good access of reactants to the photocatalyst surface, good irradiation of the photocatalytic surface and reduction of mass transfer resistance, leading to increased process efficiency. The homemade photoreactor was used for the photocatalytic degradation of one of the major types of neonicotinoid insecticides, acetamiprid. The influence of various working conditions, such as initial solution pH, rotation speed, recirculation flow rate and initial concentration of acetamiprid on the photocatalytic degradation process was investigated. The optimum degradation conditions were found at a recirculation flow rate of 200 cm3 min−1 and a rotation speed of 200 rpm, indicating that the mass transfer process strongly contributes to the photocatalytic degradation rate at the conditions used in this study. The results obtained during the photocatalytic degradation of acetamiprid in a rotating photoreactor were compared with those obtained under similar operating conditions in a flat-plate photoreactor, and the corresponding conclusions were drawn based on the performed kinetic analysis.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"823 - 833"},"PeriodicalIF":1.6,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42782919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Bio-lubricant production based on epoxidized oleic acid derived dated palm oil using in situ peracid mechanism 基于环氧化油酸衍生的过时棕榈油原位过酸机理生产生物润滑油

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-10-31 DOI: 10.1515/ijcre-2022-0161

Tunku Arif Zafri Tunku Ozir, Mohd Zulkipli Bin Ab Kadir, I. S. Azmi, Mohamad Zarqani Yeop, Siti Mariam A. Rahman, M. Jalil

{"title":"Bio-lubricant production based on epoxidized oleic acid derived dated palm oil using in situ peracid mechanism","authors":"Tunku Arif Zafri Tunku Ozir, Mohd Zulkipli Bin Ab Kadir, I. S. Azmi, Mohamad Zarqani Yeop, Siti Mariam A. Rahman, M. Jalil","doi":"10.1515/ijcre-2022-0161","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0161","url":null,"abstract":"Abstract In recent years, research on the epoxidation of fatty acids has attracted a great deal of attention due to the increased need for eco-friendly epoxides generated from vegetable oils. The purpose of this research is to produce bio-lubricant from optimized epoxidized oleic acid by alcoholysis with methanol, tert-butyl alcohol, and ethanolamine. Epoxidation is carried out using in situ performic acid formation under a constant temperature of 60 °C where formic acid acts as an oxygen carrier and hydrogen peroxide acts as an oxygen donor. The determination of the optimum process parameters uses one factor at a time (OFAT) method and is based on the optimized process parameters until the maximum relative conversion to oxirane of 65% is achieved. The bio-lubricants are confirmed using the Fourier Transform Infrared (FTIR) analysis and the results show that the hydroxyl group is present at 3400 cm−1 of wavenumber. A kinetic modeling is performed using the MATLAB optimization tool. After 100 iterations, the reaction rate constant based on optimized epoxidized dated palm oil production were obtained as follows: k11 = 0.4251 mol⋅L−1⋅min−1, k12 = 11.345 mol⋅L−1⋅min−1, and k2 = 0.6761 mol⋅L−1⋅min−1.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"49 2","pages":"793 - 800"},"PeriodicalIF":1.6,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41294548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 4

Depolymerization of lignin by extracellular activity of Pycnoporus cinnabarinus, to obtain cellulose 朱砂比重瓶胞外活性对木质素的解聚，获得纤维素

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-10-28 DOI: 10.1515/ijcre-2022-0037

Raymundo Guzmán Gil, Oscar Manuel González Brambila, Hugo Velasco Bedrán, J. C. García Martínez, José Antonio Colín Luna, M. M. González Brambila

{"title":"Depolymerization of lignin by extracellular activity of Pycnoporus cinnabarinus, to obtain cellulose","authors":"Raymundo Guzmán Gil, Oscar Manuel González Brambila, Hugo Velasco Bedrán, J. C. García Martínez, José Antonio Colín Luna, M. M. González Brambila","doi":"10.1515/ijcre-2022-0037","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0037","url":null,"abstract":"Abstract Cellulose can be used to produce biofuels and many other products like pharmaceutical goods, food supplements, cosmetics, bio-plastics, etc. Lignocellulosic materials, like O. ficus indica residuals, are a heterogeneous biopolymer formed mainly by lignin, hemicellulose and cellulose. Lignin provides protection to the plants against chemical and microbial degradation, but it can be degraded by white rot fungi species, like Pycnoporus cinnabarinus. Since cellulose molecules are arranged in regular bundles enveloped by hemicellulose and lignin molecules, it is necessary to brake lignin and hemicellulose molecules to recover cellulose for its use in bioprocess. In this work, a biotechnological process for cellulose recovery from cactus waste through depolymerization of lignin by P. cinnabarinus, is presented. The delignification is carried out by aerobic culture in batch stirred bioreactors, with a liquid culture medium enriched with nutrients and minerals with O. ficus indica residuals as the unique carbon source, during eight-day span under continuous feeding of oxygen. A factorial design of experiments (DOE) for eight sets of factor values was selected for this study. The factors were: particle size, pH level, and process temperature. For each experiment, biomass, total reducing carbohydrates (TRC) and dissolved oxygen (DO) concentrations were measured every 24 h. At the end of each experiment, the percentage of delignification, and cellulose recovery was measured by Infrared (IR) spectroscopy. Up to 67% of delignification and 22% of cellulose recovery were obtained by the process. These results were analyzed by a factorial DOE in order to maximize each response individually and to optimize both responses together. The delignification of Opuntia ficus indica thorns has not been previously reported to our knowledge.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"445 - 460"},"PeriodicalIF":1.6,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48231105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Oxidation of NMST to NMSBA catalyzed by Co/Mn/Br together with porous carbon made from coconut shell with acetic acid as an activator Co/Mn/Br催化椰壳多孔碳氧化NMST制NMSBA，乙酸为活化剂

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-10-28 DOI: 10.1515/ijcre-2022-0014

F. Guo, Hua-jie Liu, Xin‐zhi Zhou, Xiang‐li Long

引用次数: 0