Chemical Industry & Chemical Engineering Quarterly最新文献_第7页

Heat transfer studies of Al2O3/water-ethylene glycol nanofluid using factorial design analysis 用析因设计分析研究氧化铝/水-乙二醇纳米流体的传热

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/CICEQ210125021M

Srinivasan Manikandan Periasamy, Nesakumar Dharmakkan, N. Sumana

{"title":"Heat transfer studies of Al2O3/water-ethylene glycol nanofluid using factorial design analysis","authors":"Srinivasan Manikandan Periasamy, Nesakumar Dharmakkan, N. Sumana","doi":"10.2298/CICEQ210125021M","DOIUrl":"https://doi.org/10.2298/CICEQ210125021M","url":null,"abstract":"The experimental study of heat transfer coefficient of nanofluid plays a significant role in improving the heat transfer rate of the heat exchanger. The research was conducted in a natural convection heat transfer apparatus by suspending Al2O3 nanoparticle in a base fluid of Water-Ethylene glycol mixture. The effects of heat input (A), nanoparticle volume fraction (B), and base fluid concentration (C) on experimental heat transfer coefficient (hexpnf) were studied. By the results obtained by MINITDesign software 23 full factorial design matrix, 16 experimental runs were performed with the lower and higher level of input factors. The levels for heat input are 10 and 100 W; nanoparticle volume fraction is 0.1 and 1 volume% and for base fluid concentration is 30 and 50 volume% of Ethylene Glycol in water. From the obtained experimental results residual plots, Pareto chart, contour plot and 3D surface plots were drawn. It can be found from the study that the experimental heat transfer coefficient showed highest enhancement with high level of nanoparticle volume fraction and moderate enhancement with high level of heat input and slight enhancement with base fluid concentration.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68462468","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

New method based on neuro-fuzzy system and PSO algorithm for estimating phase equilibria properties 基于神经模糊系统和粒子群算法的相平衡特性估计新方法

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/ciceq201104024a

El Abdallah Hadj, M. Laidi, S. Hanini

{"title":"New method based on neuro-fuzzy system and PSO algorithm for estimating phase equilibria properties","authors":"El Abdallah Hadj, M. Laidi, S. Hanini","doi":"10.2298/ciceq201104024a","DOIUrl":"https://doi.org/10.2298/ciceq201104024a","url":null,"abstract":"The subject of this work is to propose a new method based on ANFIS system and PSO algorithm to conceive a model for estimating the solubility of solid drugs in sc-CO2. The high nonlinear process was modeled by neuro-fuzzy approach (NFS). The PSO algorithm was used for two purposes: replacing the standard back propagation in training the NFS and optimizing the process. The validation strategy have been carried out using a linear regression analysis of the predicted versus experimental outputs. The ANFIS approach is compared to the ANN in terms of accuracy. Statistical analysis of the predictability of the optimized model trained with PSO algorithm (ANFIS-PSO) shows very good agreement with reference data than ANN method. Furthermore, the comparison in terms of AARD deviation (%) between the predicted results, results predicted by density-based models and a set of equations of state demonstrates that the ANFIS-PSO model correlates far better the solubility of the solid drugs in scCO2.A control strategy was also developed for the first time in the field of phase equilibrium by using the neuro fuzzy inverse approach (ANFISi) to estimate pure component properties from the solubility data without passing through GCM methods.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68461164","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

Dynamic optimization of low-density polyethylene production in tubular reactor under thermal safety constraint 热安全约束下管式反应器低密度聚乙烯生产的动态优化

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/ciceq190108027a

A. Azmi, S. A. Sata, F. S. Rohman, N. Aziz

{"title":"Dynamic optimization of low-density polyethylene production in tubular reactor under thermal safety constraint","authors":"A. Azmi, S. A. Sata, F. S. Rohman, N. Aziz","doi":"10.2298/ciceq190108027a","DOIUrl":"https://doi.org/10.2298/ciceq190108027a","url":null,"abstract":"A commercial low-density polyethylene (LDPE) which is produced by the polymerization process of ethylene in the presence of initiators in a long tubular reactor is the most widely used in polymer industry. The highly exothermic nature of the LDPE polymerization process and the heating-cooling prerequisite in the tubular reactor can lead to various problems, particularly safety in terms of thermal runaway and productivity, i.e., decreasing monomer conversion. Therefore, model-based optimization of an industrial LDPE tubular reactor under thermal safety consideration is required to be implemented. A first principle model for this process is developed and validated using industrial data. Mass and energy balances have been derived from kinetics of LDPE polymerization. Thereafter, an expression of reactor temperature under critical condition is developed and incorporated in the reference model for the thermal safety study. In order to ensure the process is thermally safe and meets the desired product grade, the constrained dynamic optimization is proposed to maximize the conversion of the monomer using orthogonal collocation (OC). The dynamic optimization result shows that the maximum reaction temperature under critical condition constraint can be satisfied by optimizing the reactor jacket. Moreover, it is achieved without jeopardizing the monomer conversion and the product grade.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68458700","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: 7

Electrochemical harvesting of microalgae꞉ Parametric and cost-effectivity comparative investigation 微藻电化学收获的参数化与成本-效益对比研究

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/ciceq191213031a

A. Al-Yaqoobi, Muna N. Al-Rikabey, M. Al-Mashhadani

{"title":"Electrochemical harvesting of microalgae꞉ Parametric and cost-effectivity comparative investigation","authors":"A. Al-Yaqoobi, Muna N. Al-Rikabey, M. Al-Mashhadani","doi":"10.2298/ciceq191213031a","DOIUrl":"https://doi.org/10.2298/ciceq191213031a","url":null,"abstract":"The cost of microalgae harvesting constitutes a heavy burden on the commercialization of biofuel production. The present study addressed this problem through economic and parametric comparison of electrochemical harvesting using a sacrificial electrode (aluminum) and a nonsacrificial electrode (graphite). The harvesting efficiency, power consumption, and operation cost were collected as objective variables as a function of applied current and initial pH of the solution. The results indicated that high harvesting efficiency obtained by using aluminum anode is achieved in short electrolysis time. That harvesting efficiency can be enhanced by increasing the applied current or the electrolysis time for both electrode materials, where 98% of harvesting efficiency can be obtained. The results also demonstrated that the power consumption with the graphite anode is higher than that of aluminum. However, at 0.2 A the local cost of operation with graphite (0.036 US$/m3) is distinctly lower than that of aluminum (0.08 US$/m3). Furthermore, the harvesting efficiency reached its higher value at short electrolysis time at an initial pH of 6 for aluminum, and at an initial pH of 4 for graphite. Consequently, the power consumption of the harvesting process could be reduced at acid- nature conditions to around 0.46 kWh/kg for aluminum and 1.12 kWh/kg for graphite.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68460370","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: 5

Multivariate statistical optimization of the ethanol fuel dehydration process using ionic liquids 离子液体乙醇燃料脱水过程的多元统计优化

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/ciceq200410035c

Cláudia Cavalcanti Jéssica, João Paulo, L. Stragevitch, de Rodrigues Carvalho, Maria Pimentel Fernanda

{"title":"Multivariate statistical optimization of the ethanol fuel dehydration process using ionic liquids","authors":"Cláudia Cavalcanti Jéssica, João Paulo, L. Stragevitch, de Rodrigues Carvalho, Maria Pimentel Fernanda","doi":"10.2298/ciceq200410035c","DOIUrl":"https://doi.org/10.2298/ciceq200410035c","url":null,"abstract":"In this work, the ethanol fuel dehydration process was optimized using the Aspen Plus? simulator and a multivariate statistical technique based on the desirability function. The suitability of the ionic liquids 1-methylimidazolium chloride ([Mim][Cl]), 1-ethyl-3-methylimidazolium chloride ([Emim][Cl]), 1-butyl- -3-methylimidazolium chloride ([Bmim][Cl]) and 1-hexyl-3-methylimidazolium chloride ([Hmim][Cl]), as extractive distillation entrainers, was also evaluated and compared to the conventional solvents, ethylene glycol and cyclohexane. Among the solvents studied, [Mim][Cl] required the lowest energy consumption, about 8% less energy use when compared to the optimized process using ethylene glycol. The multivariate statistical techniques employed were effective in the optimization of the extractive distillation processes as the process energy consumption could be minimized while achieving ethanol purity in agreement with the current specifications as well as obtaining a high solvent recovery. With the desirability approach it was possible to improve the process performance with little or no modification of existing processing plants.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68460859","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

Optimization of low-cost cow dung based activated carbon for the removal of carbofuran from aqueous solution 低成本牛粪活性炭去除水溶液中呋喃的优化研究

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/ciceq200427033h

Shama Hayder Mustafa, S. Hussain, W. Ahmad, M. Jahanzaib, Abaid Ullah

{"title":"Optimization of low-cost cow dung based activated carbon for the removal of carbofuran from aqueous solution","authors":"Shama Hayder Mustafa, S. Hussain, W. Ahmad, M. Jahanzaib, Abaid Ullah","doi":"10.2298/ciceq200427033h","DOIUrl":"https://doi.org/10.2298/ciceq200427033h","url":null,"abstract":"Water pollution has become a serious issue of this century due to increased industrialization. Several methods have been adopted to tackle this issue, including adsorption by activated carbon (AC). Conventional sources of AC preparation are costly and non-renewable as well. Several fruit and agricultural wastes have characteristics to become sustainable feedstock for AC preparation. This study aims to prepare cost effective AC from sustainable raw material, cow dung. The preparation has been analyzed and optimized by utilizing central composite design (CCD). The effect of activation temperature, time, and impregnation ratio (IR) on responses of percent yield ( R1) and percent pesticide removal (R2) has been analyzed. Quadratic models have been suggested with R2, adjusted R2, and predicted R2 values of 0.98, 0.96, 0.89 for R1, and 0.97, 0.94, 0.87 for R2, respectively. Activation temperature and KOH/Feedstock ratio significantly influence the yield and pesticide removal. Optimized conditions of activation temperature, KOH/Feedstock ratio, and activation time are 708.07 ?C, 1.22 and 0.66 h, respectively. These conditions produced 14.78% yield and 89.18% pesticide removal. SEM and BET analysis of optimized AC also confirmed porosity development and large surface area availability due to activation process. Findings of this study suggest that cow dung can be used to prepare low-cost AC for pesticide removal from aqueous solution.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68460900","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

Factorial design and surface method to optimization ethylic biodiesel production from chicken wastes 因子设计与表面法优化鸡废弃物生产乙基生物柴油

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/ciceq191117034s

Neto Silva Daniel, Ferreira Loz Paulo, João Soletti Inácio, Dayana Coêlho de

{"title":"Factorial design and surface method to optimization ethylic biodiesel production from chicken wastes","authors":"Neto Silva Daniel, Ferreira Loz Paulo, João Soletti Inácio, Dayana Coêlho de","doi":"10.2298/ciceq191117034s","DOIUrl":"https://doi.org/10.2298/ciceq191117034s","url":null,"abstract":"To produce biodiesel, one of the most important factors is the quality of the oil used in the production. However, other factors such as price and availability should also be taken into consideration. Chicken wastes oil shows a very promising option for this sector, since it comes from a waste. The aim of the present study was a methodology for extraction and characterization of chicken wastes oil for production of biodiesel by ethylic transesterification, besides presenting the characterization and optimization of the process variables of the production of biodiesel, the applying of RSM involving CCD. The investigation was performed following evaluation of the characterization parameters for the oil: viscosity, density, acidity index, moisture of the sample, refractive index, and saponification index. For biodiesel, viscosity, density, acidity index and ester content were evaluated. An optimum point was reached for the production of chicken biodiesel where the concentration of the catalyst is 2.1% by mass, the oil/ethanol ratio is 1:5.5 and the reaction temperature of 30 ?C; at that point, a 95% conversion was achieved. At the optimum point obtained from the statistical technique for a p-value of 0.05 the results found for the physical- chemical characterization of biodiesel are found in the ANP standards.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68459839","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

The flow and mass transfer characteristics of concentric gas-liquid flow in an advanced static mixer 先进静态混合器内同心气液流动及传质特性研究

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/ciceq191213024m

Huibo Meng, Zhonggen Li, Yanfang Yu, Mengqi Han, Shuning Song, Xiu-Hui Jiang, Zongyong Wang, Jianhua Wu

{"title":"The flow and mass transfer characteristics of concentric gas-liquid flow in an advanced static mixer","authors":"Huibo Meng, Zhonggen Li, Yanfang Yu, Mengqi Han, Shuning Song, Xiu-Hui Jiang, Zongyong Wang, Jianhua Wu","doi":"10.2298/ciceq191213024m","DOIUrl":"https://doi.org/10.2298/ciceq191213024m","url":null,"abstract":"The fluid dynamic and mass transfer characteristics of concentric upward gas-liquid flow were studied in an industrial static mixer with four equally spaced helical inserts (FKSM). The numerical simulations of the gas volume fraction in a Kenics mixer was in good agreement with the numerical and experimental results provided by Rabha et al. The characteristics of radial gas void fraction and local mass transfer coefficients in the FKSM were evaluated under different operating conditions. The velocity profiles of the concentric air phase accelerated by the bubble forces first became sharp and narrow until z/l = = -3.27 and then slowly decreased and stabilized at z/l = -1.5 before entering the first mixing element. Some extra unimodal profile of radial gas holdup gradually generated near the rectangle cross-sections of the mixing elements. The ?G gradually enlarged from r/R = 0.2 to r/R = 0.55 and then weakened from r/R = 0.65 to r/R = 0.874. The air void fractions in the bulk flow region decreased with the increasing initial uniform bubble diameter. The inlet effect of the first leading edge enhanced the air phase dispersion and local mass transfer coefficients sharply increased from 2.04 to 3.69 times of that in the inlet. The local mass transfer coefficients in each mixing group had unimodal profiles.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68460325","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

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/CICEQ201013005A

H. Ameur, Y. Kamla

引用次数: 1

pH control in sodium chlorate cell for energy efficiency using PSO-FOPID controller 使用PSO-FOPID控制器控制氯酸钠电池的pH值以提高能效

IF 1.2 4区工程技术

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2021-01-01 DOI: 10.2298/ciceq200911031s

Sreepriya Sreekumar, Aparna Kallingal, Vinila Mundakkal Lakshmanan

{"title":"pH control in sodium chlorate cell for energy efficiency using PSO-FOPID controller","authors":"Sreepriya Sreekumar, Aparna Kallingal, Vinila Mundakkal Lakshmanan","doi":"10.2298/ciceq200911031s","DOIUrl":"https://doi.org/10.2298/ciceq200911031s","url":null,"abstract":"Industrial sodium chlorate production is a highly energy-intensive electro-chemical process. If the pH of the chlorate cell is not controlled, the current efficiency drops from 99% to as low as 66.66%. Hence control of chlorate cell pH is very significant for energy-efficient sodium chlorate production. This study puts forward a fractional order PID controller for controlling the pH of the sodium chlorate cell. The tuning of FOPID controller variables is affected by employing particle swarm optimization. The highlight of the controller is that it is flexible, easy to deploy and the time of computation is significantly low as few parameters are needed to be adjusted in PSO. The performance analysis of the suggested FOPID-PSO controller was studied and compared with the traditional PI controller and PID controller using time-domain provisions like settling time, rise time and peak overshoot and error indicators like integral square error (ISE), integral absolute error (IAE), and integral time absolute error (ITAE). FOPID controller employing PSO proved to perform well compared to conventional controllers with 0.5 sec settling time and 0.1 sec rise time. This demonstrates that the FOPID-PSO controller has better setpoint tracking, which is very essential for the process under consideration.","PeriodicalId":9716,"journal":{"name":"Chemical Industry & Chemical Engineering Quarterly","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68461313","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