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Pashaei H, Mashhadimoslem H, Ghaemi A. Modeling and optimization of CO 2 mass transfer flux into Pz-KOH-CO 2 system using RSM and ANN. Sci Rep 2023; 13:4011. [PMID: 36899032 PMCID: PMC10006194 DOI: 10.1038/s41598-023-30856-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 03/02/2023] [Indexed: 03/12/2023] Open
Abstract
In this research, artificial neural networks (ANN) and response surface methodology (RSM) were applied for modeling and optimization of carbon dioxide (CO2) absorption using KOH-Pz-CO2 system. In the RSM approach, the central composite design (CCD) describes the performance condition in accordance with the model using the least-squares technique. The experimental data was placed in second-order equations applying multivariate regressions and appraised applying analysis of variance (ANOVA). The p-value for all dependent variables was obtained to be less than 0.0001, indicating that all models were significant. Furthermore, the experimental values obtained for the mass transfer flux satisfactorily matched the model values. The R2 and Adj-R2 models are 0.9822 and 0.9795, respectively, which, it means that 98.22% of the variations for the NCO2 is explained by the independent variables. Since the RSM does not create any details about the quality of the solution acquired, the ANN method was applied as the global substitute model in optimization problems. The ANNs are versatile utensils that can be utilized to model and anticipate different non-linear and involved processes. This article addresses the validation and improvement of an ANN model and describes the most frequently applied experimental plans, about their restrictions and generic usages. Under different process conditions, the developed ANN weight matrix could successfully forecast the behavior of the CO2 absorption process. In addition, this study provides methods to specify the accuracy and importance of model fitting for both methodologies explained herein. The MSE values for the best integrated MLP and RBF models for the mass transfer flux were 0.00019 and 0.00048 in 100 epochs, respectively.
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Affiliation(s)
- Hassan Pashaei
- School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Narmak, Tehran, 16846, Iran
| | - Hossein Mashhadimoslem
- School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Narmak, Tehran, 16846, Iran
| | - Ahad Ghaemi
- School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Narmak, Tehran, 16846, Iran.
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2
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Optimization of Nanofiltration Hollow Fiber Membrane Fabrication Process Based on Response Surface Method. MEMBRANES 2022; 12:membranes12040374. [PMID: 35448340 PMCID: PMC9032820 DOI: 10.3390/membranes12040374] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/18/2022] [Accepted: 03/23/2022] [Indexed: 11/17/2022]
Abstract
Layer-by-layer (LBL) self-assembly technology has become a new research hotspot in the fabrication of nanofiltration membranes in recent years. However, there is a lack of a systematic approach for the assessment of influencing factors during the membrane fabrication process. In this study, the process optimization of LBL deposition was performed by a two-step statistical method. The multiple linear regression was performed on the results of single-factor experiments to determine the major influencing factors on membrane performance, including the concentration of Poly (allylamine hydrochloride) (PAH), glutaraldehyde, and the NaCl concentration in PAH solution. The Box–Behnken response surface method was then used to analyze the interactions between the selected factors, while their correlation with the membrane performance was obtained by polynomial fitting. The R2 value of the regression models (0.97 and 0.94) was in good agreement with the adjusted R2 value (0.93 and 0.86), indicating that the quadratic response models were adequate enough to predict the membrane performance. The optimal process parameters were finally determined through dual-response surface analysis to achieve both high membrane permeability of 14.3 LMH·MPa−1 and MgSO4 rejection rate of 90.22%.
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3
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Multivariable identification of membrane fouling based on compacted cascade neural network. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.01.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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The Structural and Optical Properties of 1,2,4-Triazolo[4,3- a]pyridine-3-amine. Molecules 2022; 27:molecules27030721. [PMID: 35163987 PMCID: PMC8838196 DOI: 10.3390/molecules27030721] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 11/17/2022] Open
Abstract
The structural and spectroscopic properties of a new triazolopyridine derivative (1,2,4-triazolo[4,3-a]pyridin-3-amine) are described in this paper. Its FTIR spectrum was recorded in the 100–4000 cm−1 range and its FT-Raman spectrum in the range 80–4000 cm−1. The molecular structure and vibrational spectra were analyzed using the B3LYP/6-311G(2d,2p) approach and the GAUSSIAN 16W program. The assignment of the observed bands to the respective normal modes was proposed on the basis of PED calculations. XRD studies revealed that the studied compound crystallizes in the centrosymmetric monoclinic space group P21/n with eight molecules per unit cell. However, the asymmetric unit contains two 1,2,4-triazolo[4,3-a]pyridin-3-amine molecules linked via N–H⋯N hydrogen bonds with a R22(8) graph. The stability of the studied molecule was considered using NBO analysis. Electron absorption and the luminescence spectra were measured and discussed in terms of the calculated singlet, triplet, HOMO and LUMO electron energies. The Stokes shifts derived from the optical spectra were equal to 9410 cm−1 for the triazole ring and 7625 cm−1 for the pyridine ring.
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Jang H, Park SJ, Kim J. Response surface methodology to investigate the effects of operational parameters on membrane fouling and organic matter rejection in hard-shell encased hollow-fiber membrane. CHEMOSPHERE 2022; 287:132132. [PMID: 34500327 DOI: 10.1016/j.chemosphere.2021.132132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/28/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
The response surface methodology (RSM) was found useful statistical tool for understanding combined effect of filtration, backwashing time and dosage of sodium hypochlorite (NaOCl) added into backwash water as three operational parameters on transient behavior of transmembrane pressure (TMP) and organic rejection efficiency. Here, encased, hollow-fiber ultrafiltration (UF) system was developed for treating synthetic humic acid (HA) solution. To carry out RSM analysis, experimental matrix was designed by Box-Behnken model. Results showed that the NaOCl dosage for the chemical enhanced backwashing (CEB) as single parameter played most dominant role in fouling mitigation. Effect of hydraulic cleaning by applying the permeate backwashing only without performing the CEB was almost negligible to flush the fouling layer from membrane. Considering two correlated parameters, backwashing time combined with NaOCl dosage was found much more important than combination of other parameter such as filtration time to reduce fouling rate. Regardless of the operational parameters, the organic rejection efficiency was maintained 30% only. The RSM analysis also found that 40.1 min of filtration, 1.1 min of backwashing and 834 mg/L of NaOCl were optimum operating parameters to enhance both permeate recovery and fouling mitigation.
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Affiliation(s)
- Hoseok Jang
- Department of Environmental Engineering, Program in Environmental and Polymer Engineering, Inha University, Muchuholgu, Incheon, Republic of Korea
| | - Seong-Jik Park
- Department of Bioresources and Rural Systems Engineering, Hankyong National University, Anseong, Republic of Korea
| | - Jeonghwan Kim
- Department of Environmental Engineering, Program in Environmental and Polymer Engineering, Inha University, Muchuholgu, Incheon, Republic of Korea.
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Khoshraftar Z, Ghaemi A, Mohseni Sigaroodi AH. The effect of solid adsorbents in Triethanolamine (TEA) solution for enhanced CO2 absorption rate. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04532-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Shafaghat J, Ghaemi A. Comparison of Pb(II) Adsorption by Ground Granulated Blast-Furnace and Phosphorus Slags; Exploitation of RSM. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY, TRANSACTIONS A: SCIENCE 2021. [DOI: 10.1007/s40995-021-01075-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hemmati A, Ghaemi A, Asadollahzadeh M. RSM and ANN modeling of hold up, slip, and characteristic velocities in standard systems using pulsed disc-and-doughnut contactor column. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2020.1842890] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Alireza Hemmati
- School of Chemical Petroleum and Gas Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Ahad Ghaemi
- School of Chemical Petroleum and Gas Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Mehdi Asadollahzadeh
- Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
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9
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Pashaei H, Ghaemi A, Nasiri M, Karami B. Experimental Modeling and Optimization of CO 2 Absorption into Piperazine Solutions Using RSM-CCD Methodology. ACS OMEGA 2020; 5:8432-8448. [PMID: 32337405 PMCID: PMC7178350 DOI: 10.1021/acsomega.9b03363] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 03/27/2020] [Indexed: 05/29/2023]
Abstract
The present work evaluates and optimizes CO2 absorption in a bubble column for the Pz-H2O-CO2 system. We analyzed the impact of the different operating conditions on the hydrodynamic and mass-transfer performance. For the optimization of the process, variable conditions were used in the multivariate statistical method of response surface methodology. The central composite design is used to characterize the operating condition to fit the models by the least-squares method. The experimental data were fitted to quadratic equations using multiple regressions and analyzed using analysis of variance (ANOVA). An approved experiment was carried out to analyze the correctness of the optimization method, and a maximum CO2 removal efficiency of 97.9%, an absorption rate of 3.12 g/min, an N CO2 of 0.0164 mol/m2·s, and a CO2 loading of 0.258 mol/mol were obtained under the optimized conditions. Our results suggest that Pz concentration, solution flow rate, CO2 flow rate, and speed of stirrer were obtained to be 0.162 M, 0.502 l/h, 2.199 l/min, and 68.89 rpm, respectively, based on the optimal conditions. The p-value for all dependent variables was less than 0.05, and that points that all three models were remarkable. In addition, the experiment values acquired for the CO2 capture were found to agree satisfactorily with the model values (R 2 = 0.944-0.999).
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Affiliation(s)
- Hassan Pashaei
- Faculty
of Chemical, Petroleum and Gas Engineering, Semnan
University, Semnan 35131-19111, Iran
| | - Ahad Ghaemi
- School
of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Masoud Nasiri
- Faculty
of Chemical, Petroleum and Gas Engineering, Semnan
University, Semnan 35131-19111, Iran
| | - Bita Karami
- School
of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
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Qiao L, Zhai Z, Cai P, Tan C, Weng J, Han L, Liu X, Zhang Y. Synthesis, Crystal Structure, Antifungal Activity, and Docking Study of Difluoromethyl Pyrazole Derivatives. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3648] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Li Qiao
- College of Chemical EngineeringZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Zhi‐Wen Zhai
- College of Chemical EngineeringZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Peng‐Peng Cai
- College of Chemical EngineeringZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Cheng‐Xia Tan
- College of Chemical EngineeringZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Jian‐Quan Weng
- College of Chemical EngineeringZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Liang Han
- College of Chemical EngineeringZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Xing‐Hai Liu
- College of Chemical EngineeringZhejiang University of Technology Hangzhou Zhejiang 310014 China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of EducationGuizhou University Guiyang 550025 China
| | - Yong‐Gang Zhang
- Biology InstituteQilu University of Technology (Shandong Academy of Sciences) Jinan Shandong China
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11
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Yang T, Liu F, Xiong H, Yang Q, Chen F, Zhan C. Fouling process and anti-fouling mechanisms of dynamic membrane assisted by photocatalytic oxidation under sub-critical fluxes. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.10.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Wang Q, Zhai ZW, Sun ZH, Yang MY, Han L, Liu XH, Tan CX, Weng JQ. Crystal Structure of a Novel 1,2,4- Triazolo[4,3-a]Pyridine Compound with Antifungal Activity. J STRUCT CHEM+ 2018. [DOI: 10.1134/s0022476618060331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Lü C, Wang Y, Qian P, Liu Y, Fu G, Ding J, Ye S, Chen Y. Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.02.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Shen ZH, Wang Q, Sun ZH, Wu HK, Tan CX, Weng JQ, Liu XH. Crystal Structure of 2-(Pyridin-4-yl)-5-(Undecylthio)-1,3,4-Oxadiazole. J STRUCT CHEM+ 2018. [DOI: 10.1134/s0022476618050323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Xu FZ, Wang YY, Zhu YY, Shao JH, Yu G, Xue W, Wu J, Wu HB, Shi J. Synthesis and biological activity of novel sulfone derivatives containing a [1,2,4]triazolo[4,3-a]pyridine moiety. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1288626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Fang-Zhou Xu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang, P.R. China
| | - Yan-Yan Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang, P.R. China
| | - Yun-Ying Zhu
- School of Chemical Engineering, Guizhou Institute of Technology, Yunyan District, Guiyang, P.R. China
| | - Jia-Hui Shao
- College of Life Science, Zaozhuang University, Zaozhuang, P.R. China
| | - Gang Yu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang, P.R. China
| | - Wei Xue
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang, P.R. China
| | - Jian Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang, P.R. China
| | - Hui-Bing Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang, P.R. China
| | - Jun Shi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang, P.R. China
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Yang HH, Zhu C, Cui C, Li JQ, Zhao WG, Liu XH. Facile synthesis, crystal structure and antifungal activity of dimethylated trifluoroatrolactamide derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-016-2767-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Synthesis, nematocidal activity and SAR study of novel difluoromethylpyrazole carboxamide derivatives containing flexible alkyl chain moieties. Eur J Med Chem 2016; 125:881-889. [PMID: 27769029 DOI: 10.1016/j.ejmech.2016.10.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 10/07/2016] [Accepted: 10/08/2016] [Indexed: 12/16/2022]
Abstract
A series of novel difluoromethylpyrazole carboxamides derivatives were synthesized by introduction of flexible alkyl chain. Nematicidal bioassay results showed that some of them exhibited good control efficacy against M. incognita, which indicated that these difluoromethylpyrazole carboxamides derivatives might be potential novel lead compounds for discovery new nematicides. The nematicidal activity was affected by the substituted position in the molecule, especially the substitution group on the alkyl chain. It was found that the compound 6-9 and 6-23 possess about 50% inhibition effect against M. incognita even at 5.0 and 1.0 mg L-1. Meanwhile, greenhouse field trial showed the nematicidal activity of compound 6-9 is a litter weaker than that of Abamectin. The mammalian toxicology results indicated that compound 6-9 was a low-toxicity and low-sensitive compound. In conclusion compound 6-9 is a potential candidate for further development. In addition, the molecular docking simulations revealed that compounds 6 with a flexible NHCOO show its binding affinities for the acetylcholine receptor (AChR), which may provide useful information for further design novel nematicides.
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