Canadian Journal of Chemical Engineering最新文献_第7页

Density, viscosity, and stability of products from combinations of visbreaking and deasphalting 降粘和脱沥青组合产品的密度、粘度和稳定性

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-28 DOI: 10.1002/cjce.25694

Jose Beleno, Florian F. Schoeggl, Darius Remesat, Harvey W. Yarranton

{"title":"Density, viscosity, and stability of products from combinations of visbreaking and deasphalting","authors":"Jose Beleno, Florian F. Schoeggl, Darius Remesat, Harvey W. Yarranton","doi":"10.1002/cjce.25694","DOIUrl":"https://doi.org/10.1002/cjce.25694","url":null,"abstract":"Transporting bitumen through pipelines in Western Canada is cost intensive because the oil has to be diluted with light solvents to meet pipeline specifications. The diluent requirement can be reduced by visbreaking (VIS) and solvent deasphalting (SDA), each of which decrease the viscosity and density of the oil. Combinations of the two processes can provide a greater viscosity and density reduction while minimizing the risk of asphaltene precipitation and coke formation. However, data on the product properties are required to assess these combined processes. In this study, a Western Canadian bitumen was visbroken at conversions from 24% to 42% and each product was then deasphalted with extents ranging from 50% to 96 wt.% asphaltene removal (VIS-SDA sequence). The same bitumen was deasphalted with extents from 30% to 96% and each deasphalted oil was then visbroken at conversions from 6% to 44% (SDA-VIS sequence). The following measurements were performed on the products: simulated distillation, gas yield, pentane-insoluble asphaltene content, toluene insoluble (TI) content, density, viscosity, and stability. Stability was assessed in terms of the onset of asphaltene precipitation from mixtures of oil and n-heptane. Neither the VIS-SDA nor the SDA-VIS sequence met the pipeline density specification, but both were able to reduce the diluent requirement to approximately 10 wt.% compared with 28 wt.% for the feed bitumen. The VIS-SDA sequence offered better product stability; however, the suitability of the separated asphaltenes for downstream processes has not been established. The SDA-VIS sequence produced usable asphaltenes but less stable oil products.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4694-4707"},"PeriodicalIF":1.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.25694","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the accessible pore volume coefficient of chemical flooding systems under different permeability, layer combination, and planar phase transition conditions 不同渗透率、层状组合、平面相变条件下化学驱体系可达孔隙体积系数研究

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-27 DOI: 10.1002/cjce.25668

Yanyong Wang, Jianguang Wei, Peng Ye, Lianbin Zhong, Dong Zhang, Guang Wang, Runnan Zhou, Anqi Shen, Xidong Ren

{"title":"Study on the accessible pore volume coefficient of chemical flooding systems under different permeability, layer combination, and planar phase transition conditions","authors":"Yanyong Wang, Jianguang Wei, Peng Ye, Lianbin Zhong, Dong Zhang, Guang Wang, Runnan Zhou, Anqi Shen, Xidong Ren","doi":"10.1002/cjce.25668","DOIUrl":"https://doi.org/10.1002/cjce.25668","url":null,"abstract":"In this paper, first, the micro accessible efficiency of chemical flooding under different permeability reservoir conditions is studied by using nuclear magnetic resonance technology. Second, the macroscopic accessible efficiency of chemical agents under different types of sand body layer combinations was elucidated. Third, the macroscopic accessible pore volume correction coefficient of chemical agents under the phase transition conditions between injection and production wells was analyzed. Results show the following: (a) Permeability cannot be the only indicator for evaluating whether a reservoir is suitable for chemical flooding. (b) When the permeability grade ratio is less than 2.27 (10−3 μm2/10−3 μm2), the correction factor for macroscopic accessible pore volume of chemical agents is 1.00; when the permeability grade ratio has increased to 3.33, the macroscopic accessible pore volume correction factor for chemical agents in non-main sheet sand reservoirs is 0.68; and when the permeability grade ratio has increased to 16.67, the correction factor for macroscopic accessible pore volume of off balance sheet reservoir chemicals is 0.04. (c) The type and location of phase transition in sand bodies between injection and production wells have a significant impact on the macroscopic accessible volume coefficient of chemical agents. This part of the research is of great significance for selecting acid types based on reservoir properties.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 9","pages":"4608-4624"},"PeriodicalIF":1.9,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144768067","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

Investigation of selective denitrogenation of liquid fuel with different MIL-101 adsorbents 不同MIL-101吸附剂对液体燃料选择性脱氮的研究

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-26 DOI: 10.1002/cjce.25675

Mohamad Songolzadeh, Mansooreh Soleimani, Maryam Takht Ravanchi

{"title":"Investigation of selective denitrogenation of liquid fuel with different MIL-101 adsorbents","authors":"Mohamad Songolzadeh, Mansooreh Soleimani, Maryam Takht Ravanchi","doi":"10.1002/cjce.25675","DOIUrl":"https://doi.org/10.1002/cjce.25675","url":null,"abstract":"In this work, three new structures of MIL-101 with a base metal of chromium (Cr), vanadium (V), and manganese (Mn) have been synthesized to improve selective adsorbing quinoline (QUI) from a liquid fuel. Different characterization tests were used to identify the specifications of the synthesized adsorbents; namely Brunauer–Emmett–Teller (BET), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and temperature-programmed desorption (TPD). Studies indicated that pseudo-first order and Langmuir isotherm are accurate and suitable models for determining kinetic and equilibrium data of QUI adsorption on these adsorbents. Based on the results, MIL-101 (Mn) had the highest maximum adsorption capacity of 70.08 (mg N · g−1 ads.) in comparison to MIL-101 (Cr) and MIL-101 (V). For different adsorbents, the QUI/dibenzothiophene (DBT) selectivity was investigated by measuring of the adsorption of these components from their mixture. Finally, the QUI/DBT selectivity was in the following order of MIL-101 (Mn) > MIL-101 (V) > MIL-101 (Cr). Density functional theory (DFT) simulation was used to validate experimental results. Calculated bonding energies ratio for QUI and DBT indicated that MIL-101 (Mn) is the most selective adsorbent.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4803-4813"},"PeriodicalIF":1.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038373","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

Impact of slug length in gas–liquid two-phase flow on the structural stress characteristics of horizontal rigid pipelines 气液两相流段塞长度对水平刚性管道结构应力特性的影响

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-26 DOI: 10.1002/cjce.25678

Abdalellah O. Mohmmed, Hussain H. Al-Kayiem, Abderraouf Arabi

{"title":"Impact of slug length in gas–liquid two-phase flow on the structural stress characteristics of horizontal rigid pipelines","authors":"Abdalellah O. Mohmmed, Hussain H. Al-Kayiem, Abderraouf Arabi","doi":"10.1002/cjce.25678","DOIUrl":"https://doi.org/10.1002/cjce.25678","url":null,"abstract":"The intermittent passage of liquid slugs and gas pockets in slug flow generates substantial cyclic stress damage to piping systems and their supports. This issue poses significant challenges to the various industries in which this flow pattern is present. Despite their critical implications, the structural response to slug-induced forces has not yet been thoroughly elucidated. This study addresses this gap through a comprehensive experimental investigation of the influence of slug length on the structural integrity of pipes. A non-invasive image-processing technique was employed to measure the slug length, while biaxial strain gauges captured the pipe wall strain, accounting for Poisson and friction fluid–structure interaction (FSI) coupling mechanisms. The findings revealed a reduction in the induced stresses with increasing superficial liquid velocity and slug length. Furthermore, a semi-empirical model was developed by integrating slug length with the superficial gas and liquid velocities based on the slug unit concept to predict the structural stresses. The model provides a robust predictive framework for elucidating the relationship between slug length and induced stresses. However, its accuracy is influenced by the slug formation mechanism and various slug flow sub-regimes. The model demonstrated exceptional predictive capability, achieving a mean error of 6.2% and coefficient of determination of 93%.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"5124-5142"},"PeriodicalIF":1.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.25678","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A catalytic sites contiguity study on atomically-dispersed ZnO-Cu/SiO2 catalysts to improve methanol formation from CO2 hydrogenation 原子分散ZnO-Cu/SiO2催化剂促进CO2加氢生成甲醇的催化位点连续性研究

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-25 DOI: 10.1002/cjce.25683

Jingye Chen, Mohsen Shakouri, Mehryana Alizadeh, Chi Cong Tran, Nan Zou, Serge Kaliaguine, Ying Zheng, Hui Wang

{"title":"A catalytic sites contiguity study on atomically-dispersed ZnO-Cu/SiO2 catalysts to improve methanol formation from CO2 hydrogenation","authors":"Jingye Chen, Mohsen Shakouri, Mehryana Alizadeh, Chi Cong Tran, Nan Zou, Serge Kaliaguine, Ying Zheng, Hui Wang","doi":"10.1002/cjce.25683","DOIUrl":"https://doi.org/10.1002/cjce.25683","url":null,"abstract":"Cu-ZnO-based catalysts are commonly used in research on catalytic carbon dioxide (CO2) hydrogenation for methanol (MeOH) synthesis. This work studied the catalytic sites contiguity, for example, the surface orientation or arrangement of the CO2 and H2 activating sites and their capability to facilitate the interaction between the adsorbed species, and its effects on the catalytic performance of MeOH formation. Cu/SiO2 precursor was prepared by impregnating copper nitrate solution on a commercial SiO2 gel. Controlling the exposure time and cycle numbers in atomic layer deposition (ALD), atomic-level dispersion of ZnO (ADZn) was formed on the uncalcined and calcined Cu/SiO2 precursors as well as on the SiO2 gel. Characterizations allowed for identification of Cu+–Cu0 and ADZn2+–Cu+/Cu0 sites contiguity on the reduced catalyst surface. Catalytic performance tests showed that the ALD ZnO-Cu/SiO2-C catalyst facilitated the MeOH space–time yield to 33.1 g/(kgcatal ∙ h) at 240°C, three times the yield of its Cu-only counterpart. The property–performance correlation indicated that two types of ZnO–Cu sites contiguity were responsible for MeOH and CO formation from CO2 hydrogenation with the ADZn2+–Cu+/Cu0 favouring more MeOH formation. The various contiguity of ADZn2+–Cu+/Cu0 sites also influence the MeOH formation from CO2 hydrogenation.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 11","pages":"5218-5230"},"PeriodicalIF":1.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.25683","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A deep-learning model based on MFE-Transformer for chemical process fault detection 基于MFE-Transformer的化工过程故障检测深度学习模型

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-25 DOI: 10.1002/cjce.25689

Ying Xie, Xiaotong Wu, Yingjie Zhu, Yuan Zhu

{"title":"A deep-learning model based on MFE-Transformer for chemical process fault detection","authors":"Ying Xie, Xiaotong Wu, Yingjie Zhu, Yuan Zhu","doi":"10.1002/cjce.25689","DOIUrl":"https://doi.org/10.1002/cjce.25689","url":null,"abstract":"Chemical process data usually exhibits strongly nonlinear characteristics, local information loss, and sample imbalance problems. These problems make it difficult for traditional models to accurately capture the features and dependencies of chemical process data, thus affecting the fault detection effect. In order to solve the above problems, a fault detection method based on multiscale feature extraction-Transformer (MFE-Transformer) is proposed in this paper. First, the linear and nonlinear features in the data are captured respectively using a multiscale feature extractor. Second, local information enhancement is achieved by capturing the local information between the data by a multilayer convolutional neural network. After that, the high coupling in the data is captured using the multi-head self-attention mechanism in Transformer to identify the complex interactions between variables. Finally, the loss contribution of easy-to-classify samples is reduced by the focal loss function, while the sample imbalance problem is solved by enhancing the number of minority class samples using sliding window data enhancement. By experimental validation on penicillin fermentation (PF) process and Tennessee Eastman (TE) process datasets, the results show that the method outperforms traditional models in terms of fault detection performance.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4968-4988"},"PeriodicalIF":1.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038513","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

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-25 DOI: 10.1002/cjce.25690

Yikai Xue, Haipeng Pan, Ping Wu, Zhenyu Ye, Haiyun Zhou, Zhenquan Wu

{"title":"Quality-related process monitoring approach based on sparse autoencoder and comprehensive KPLS","authors":"Yikai Xue, Haipeng Pan, Ping Wu, Zhenyu Ye, Haiyun Zhou, Zhenquan Wu","doi":"10.1002/cjce.25690","DOIUrl":"https://doi.org/10.1002/cjce.25690","url":null,"abstract":"The partial least squares (PLS) model is widely employed in quality-related process monitoring due to its ability to effectively establish a linear relationship between process and quality variables. To extend this capability to nonlinear scenarios, kernel partial least squares (KPLS) was introduced. However, the use of a single kernel function is often inadequate for fully capturing nonlinearity. In this paper, a novel method for quality-related process monitoring that integrates sparse autoencoders (SAE) with two KPLS models, termed SAE-CKPLS, is developed. The SAE is utilized to extract representative features from the process variables, after which two KPLS models are constructed to explore the relationship between these extracted features and residuals with the quality variables. Additionally, two Hotelling's <math>\u0000 <mrow>\u0000 <msup>\u0000 <mi>T</mi>\u0000 <mn>2</mn>\u0000 </msup>\u0000 </mrow></math> monitoring statistics are derived from the decomposed subspaces to detect quality-related faults. The capability and effectiveness of the proposed SAE-CKPLS method are demonstrated through applications to both a hot rolling mill process and the industrial Tennessee Eastman process (TEP) benchmark, with comparative analysis against related methods.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4939-4951"},"PeriodicalIF":1.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038512","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

Multi-scale feature fusion network-based industrial process fault diagnosis method using space–time capsule and classifier optimization 基于多尺度特征融合网络的时空胶囊分类器优化工业过程故障诊断方法

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-25 DOI: 10.1002/cjce.25682

Yue Zhao, Jianjun Bai, Hongbo Zou, Jing Feng

{"title":"Multi-scale feature fusion network-based industrial process fault diagnosis method using space–time capsule and classifier optimization","authors":"Yue Zhao, Jianjun Bai, Hongbo Zou, Jing Feng","doi":"10.1002/cjce.25682","DOIUrl":"https://doi.org/10.1002/cjce.25682","url":null,"abstract":"This paper introduces a multi-scale feature fusion deep learning network method for industrial process fault diagnosis based on spatio-temporal capsules and classifier optimization. In the feature extraction phase, a multi-scale residual convolution network is initially employed to extract multi-scale features. Subsequently, the identified fault features are forwarded to the spatio-temporal capsule network to further extract information related to time and space. After the feature extraction is completed, we replace the traditional softmax classifier with eXtreme Gradient Boosting (XGBoost) to make the final diagnosis more efficient and faster, avoiding the long diagnosis time caused by complex models. The proposed network fully takes into account the nonlinearity, timing, and high-dimensionality of the original data. The residual network structure can solve the problem of model degradation caused by the deepening of network layers. The LSTM and capsule network structures can minimize the loss of effective feature information for features extraction and the XGBoost algorithm achieves good classification. This ‘offline training, online diagnosis’ method can avoid lengthy training and effectively improve the fault diagnosis efficiency. Our experiments on chemical engineering processes, such as the Tennessee Eastman (TE) process and industrial coking furnace, show that the proposed method significantly improves fault diagnosis accuracy.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4989-5011"},"PeriodicalIF":1.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038511","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

An online monitoring-based adaptive quality control framework for a continuous pharmaceutical cyber-physical system 基于在线监测的连续制药信息物理系统自适应质量控制框架

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1002/cjce.25687

Zhengsong Wang, Xiaochen Li, Xue Wang, Yanqiu Yang, Ge Guo, Meng Han

{"title":"An online monitoring-based adaptive quality control framework for a continuous pharmaceutical cyber-physical system","authors":"Zhengsong Wang, Xiaochen Li, Xue Wang, Yanqiu Yang, Ge Guo, Meng Han","doi":"10.1002/cjce.25687","DOIUrl":"https://doi.org/10.1002/cjce.25687","url":null,"abstract":"In Pharma 4.0, continuous pharmaceutical manufacturing is pivotal for quality control-driven pharmaceutical development. Pharmaceutical quality control (PQC) in a continuous pharmaceutical cyber–physical system (PCPS) plays a crucial role in ensuring the quality of drug products. However, variations or disturbances in raw materials, equipment conditions, or environmental factors may lead to deviations in critical quality attributes of drugs from their acceptable ranges. This article introduces a generalized online monitoring-based adaptive PQC framework for a continuous PCPS, structured around two phases—variational autoencoder-based online process monitoring and data and knowledge fusion driven adaptive PQC based on a fuzzy-rules emulated network. Next, a case study is presented to preliminarily explore the application of the proposed framework in a simulated pharmaceutical feeding–blending-based twin screw granulation process. Finally, a series of simulation experiments are designed to verify the feasibility and effectiveness of the simulation modelling and the proposed PQC framework.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"5012-5027"},"PeriodicalIF":1.9,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038449","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

Biodiesel production as an alternative for energetic valorization of biomass from poultry wastewater through Chlorella vulgaris and Novozyme 435 利用普通小球藻和诺维信435生产生物柴油作为家禽废水生物质能量增殖的替代方案

IF 1.9 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1002/cjce.25681

Nayeli Gutiérrez-Casiano, Eduardo Hernández-Aguilar, Juan M. Méndez-Contreras

{"title":"Biodiesel production as an alternative for energetic valorization of biomass from poultry wastewater through Chlorella vulgaris and Novozyme 435","authors":"Nayeli Gutiérrez-Casiano, Eduardo Hernández-Aguilar, Juan M. Méndez-Contreras","doi":"10.1002/cjce.25681","DOIUrl":"https://doi.org/10.1002/cjce.25681","url":null,"abstract":"This experiment used valorized biomass of Chlorella vulgaris obtained by a culture in poultry wastewater to successfully produce biodiesel through enzymatic transesterification with 1% Novozyme 435 (Candida antarctica lipase B, CAL B). To increase % biodiesel conversion utilizing valorized biomass lipids, the study sought to determine the ideal temperature (35°C and 45°C) and alcohol:oil molar ratio (6:1 and 9:1) for the transesterification reaction (two-factor experimental design with two quantitative levels). It was found that the temperature of 35°C and the molar ratio of 9:1 are the temperature and molar ratio conditions that improve the conversion to biodiesel, achieving a % biodiesel conversion of 82% in 8 h of reaction (p < 0.05). Fatty acid methyl esters (FAME) were characterized by gas chromatography demonstrating the production of biodiesel, the parameters acid number, density, cloud point, refractive index, and flash point complied with ASTM standards, the rheological behaviour of the biodiesel obtained was Newtonian (n = 1).","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4681-4693"},"PeriodicalIF":1.9,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038490","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