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Deng H, Luo Z, Imbrogno J, Swenson TM, Jiang Z, Wang X, Zhang S. Machine Learning Guided Polyamide Membrane with Exceptional Solute-Solute Selectivity and Permeance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:17841-17850. [PMID: 36576929 DOI: 10.1021/acs.est.2c05571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Designing polymeric membranes with high solute-solute selectivity and permeance is important but technically challenging. Existing industrial interfacial polymerization (IP) process to fabricate polyamide-based polymeric membranes is largely empirical, which requires enormous trial-and-error experimentations to identify optimal fabrication conditions from a wide candidate space for separating a given solute pair. Herein, we developed a novel multitask machine learning (ML) model based on an artificial neural network (ANN) with skip connections and selectivity regularization to guide the design of polyamide membranes. We used limited sets of lab-collected data to obtain satisfactory model performance over four iterations by introducing human expert experience in the online learning process. Four membranes under fabrication conditions guided by the model exceeded the present upper bound for mono/divalent ion selectivity and permeance of the polymeric membranes. Moreover, we obtained new mechanistic insights into the membrane design through feature analysis of the model. Our work demonstrates a ML approach that represents a paradigm shift for high-performance polymeric membranes design.
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Affiliation(s)
- Hao Deng
- Department Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou350207, China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore117576, Singapore
| | - Zhiyao Luo
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore117576, Singapore
| | - Joe Imbrogno
- Pfizer Inc., 235 East 42nd Street, New York, New York10017, United States
| | - Tim M Swenson
- Pfizer Inc., 235 East 42nd Street, New York, New York10017, United States
| | - Zhongyi Jiang
- Department Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou350207, China
| | - Xiaonan Wang
- Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Sui Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore117576, Singapore
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Parida VK, Sikarwar D, Majumder A, Gupta AK. An assessment of hospital wastewater and biomedical waste generation, existing legislations, risk assessment, treatment processes, and scenario during COVID-19. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 308:114609. [PMID: 35101807 PMCID: PMC8789570 DOI: 10.1016/j.jenvman.2022.114609] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/23/2022] [Accepted: 01/24/2022] [Indexed: 05/23/2023]
Abstract
Hospitals release significant quantities of wastewater (HWW) and biomedical waste (BMW), which hosts a wide range of contaminants that can adversely affect the environment if left untreated. The COVID-19 outbreak has further increased hospital waste generation over the past two years. In this context, a thorough literature study was carried out to reveal the negative implications of untreated hospital waste and delineate the proper ways to handle them. Conventional treatment methods can remove only 50%-70% of the emerging contaminants (ECs) present in the HWW. Still, many countries have not implemented suitable treatment methods to treat the HWW in-situ. This review presents an overview of worldwide HWW generation, regulations, and guidelines on HWW management and highlights the various treatment techniques for efficiently removing ECs from HWW. When combined with advanced oxidation processes, biological or physical treatment processes could remove around 90% of ECs. Analgesics were found to be more easily removed than antibiotics, β-blockers, and X-ray contrast media. The different environmental implications of BMW have also been highlighted. Mishandling of BMW can spread infections, deadly diseases, and hazardous waste into the environment. Hence, the different steps associated with collection to final disposal of BMW have been delineated to minimize the associated health risks. The paper circumscribes the multiple aspects of efficient hospital waste management and may be instrumental during the COVID-19 pandemic when the waste generation from all hospitals worldwide has increased significantly.
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Affiliation(s)
- Vishal Kumar Parida
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Divyanshu Sikarwar
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Abhradeep Majumder
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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Wang M, Xu Q, Tang H, Jiang J. Machine Learning-Enabled Prediction and High-Throughput Screening of Polymer Membranes for Pervaporation Separation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:8427-8436. [PMID: 35113512 DOI: 10.1021/acsami.1c22886] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Pervaporation (PV) is considered as a robust membrane-based separation technology for liquid mixtures. However, the development of PV membranes is impeded largely by the lack of adequate models capable of reliably predicting the performance of PV membranes. In this study, we collect an experimental data set with a total of 681 data samples including 16 polymers and 6 organic solvents for a wide variety of water/organic mixtures under various operating conditions. Then, two types of machine learning (ML) models are developed for prediction and high-throughput screening of polymer membranes for PV separation. Based on the intrinsic properties of polymer and solvent (water contact angle of polymer and solubility parameter of solvent) as gross descriptors, the first type accurately predicts PV separation performance (total flux and separation factor). The second type is based on the molecular representation of polymer and solvent, giving accuracy comparable to the first type, and applied to screen ∼1 million hypothetical polymers for PV separation of water/ethanol mixtures. With a threshold of 700 for the PV separation index, 20 polymers are shortlisted, with many surpassing experimental samples. Among these, 10 are further identified to be synthesizable in terms of a synthetic complexity score. The ML models developed in this study would facilitate the optimization of operating conditions and accelerate the development of new polymer membranes for high-performance PV separation.
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Affiliation(s)
- Mao Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117576, Singapore
| | - Qisong Xu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117576, Singapore
| | - Hongjian Tang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117576, Singapore
| | - Jianwen Jiang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117576, Singapore
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Gupta B, Gupta AK, Tiwary CS, Ghosal PS. A multivariate modeling and experimental realization of photocatalytic system of engineered S-C 3N 4/ZnO hybrid for ciprofloxacin removal: Influencing factors and degradation pathways. ENVIRONMENTAL RESEARCH 2021; 196:110390. [PMID: 33129859 DOI: 10.1016/j.envres.2020.110390] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 10/10/2020] [Accepted: 10/20/2020] [Indexed: 05/22/2023]
Abstract
Ciprofloxacin, a pharmaceutically active compound, is present as a micropollutant in wastewater, which cannot be removed by conventional techniques due to its recalcitrant nature. Therefore, in the present study, the photocatalytic degradation of this bio-toxic compound was demonstrated using a three-dimensional sulfur-doped graphitic-carbon nitride/zinc oxide hybrid, with enriched oxygen vacancies. The influence of various water matrices and experimental conditions on the ciprofloxacin degradation was optimized. The hybrid material showed 98.8% and 75.8% degradation efficiency under optimum experimental conditions (i.e., catalyst dose: 1 g/L; pH: 5; initial ciprofloxacin concentration: 20 mg/L; temperature: 27 °C) under ultraviolet (UV) and visible light, respectively. A neural-network-based multivariate approach was used to predict a significant model considering the experimental conditions that showed adequate statistical significance (R2: 0.992 and F-value: 8707.1). The relative significance of the experimental conditions was assessed, suggesting that the initial ciprofloxacin concentration has a more significant effect on the degradation efficiency than the other factors. The rate kinetics and reaction mechanisms for ciprofloxacin degradation were demonstrated, and the driving radicals involved were identified. A higher rate of reaction was found under UV irradiation (0.01702 min-1) than under visible light (0.00802 min-1). Superoxide radicals were identified as the main driving radicals, which caused substantial photocatalytic reactions among the hybrid and ciprofloxacin molecules. Microscopic and macroscopic analyses of the used hybrid were conducted, which confirmed the presence of higher defect concentrations, crystallinity, and interlinked stacked structure in the hybrid. Hence, the 3D hybrid can be efficiently used and reused for ciprofloxacin degradation. This advanced photocatalytic system can be widely used to remediate emerging contaminants in wastewater treatment.
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Affiliation(s)
- Bramha Gupta
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Chandra Sekhar Tiwary
- Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Partha Sarathi Ghosal
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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Yadav MK, Gupta AK, Ghosal PS, Mukherjee A. Effect of coexisting ions on adsorptive removal of arsenate by Mg-Fe-(CO 3) LDH: multi-component adsorption and ANN-based multivariate modeling. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2021; 56:572-584. [PMID: 33760681 DOI: 10.1080/10934529.2021.1898870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/25/2021] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
The adsorptive removal of a pollutant from water is significantly affected by the presence of coexisting ions with various concentrations. Here, we have studied adsorption of arsenate [As(V)] by calcined Mg-Fe-(CO3)-LDH in the presence of different cations (Mg2+, Na+, K+, Ca2+, and Fe3+) and anions (CO32‒, Cl‒, PO43‒, SO42‒, and NO3‒) with their different concentrations to simulate the field condition. The experimental results indicated that Ca2+, Mg2+, and Fe3+ have a synergistic effect on removal efficiency of As(V), whereas PO43‒ and CO32‒ ions have a significant antagonistic impact. Overall, the order of inhibiting effect of coexisting anions on adsorption of As(V) was arrived as NO3-˂Cl-<SO42-<CO32-<PO43-. Among them, competitive adsorption of phosphate with arsenic at different initial phosphate concentrations was found to be responsive to formulate a binary adsorption system. We have also developed a modified non-competitive Langmuir and Langmuir-Freundlich models; however, the modified competitive Langmuir model was arrived to be the most adequate model for this binary system. An Artificial Neural Network based multivariate prediction model was developed, delineating the impact of coexisting ions on the adsorption system. The proposed method may appropriately demonstrate the overall system and exhibited a significantly adequate prediction model with high R2, high F-value, and low error values.
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Affiliation(s)
- Manoj Kumar Yadav
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Partha Sarathi Ghosal
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Abhijit Mukherjee
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
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Zentou H, Abidin ZZ, Yunus R, Biak DRA, Issa MA. Optimization and modeling of the performance of polydimethylsiloxane for pervaporation of ethanol−water mixture. J Appl Polym Sci 2020. [DOI: 10.1002/app.50408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hamid Zentou
- Department of Chemical and Environmental Engineering Universiti Putra Malaysia Serdang Malaysia
| | - Zurina Zainal Abidin
- Department of Chemical and Environmental Engineering Universiti Putra Malaysia Serdang Malaysia
| | - Robiah Yunus
- Department of Chemical and Environmental Engineering Universiti Putra Malaysia Serdang Malaysia
| | | | - Mohammed Abdullah Issa
- Department of Chemical and Environmental Engineering Universiti Putra Malaysia Serdang Malaysia
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Asghari M, Dashti A, Rezakazemi M, Jokar E, Halakoei H. Application of neural networks in membrane separation. REV CHEM ENG 2018. [DOI: 10.1515/revce-2018-0011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Artificial neural networks (ANNs) as a powerful technique for solving complicated problems in membrane separation processes have been employed in a wide range of chemical engineering applications. ANNs can be used in the modeling of different processes more easily than other modeling methods. Besides that, the computing time in the design of a membrane separation plant is shorter compared to many mass transfer models. The membrane separation field requires an alternative model that can work alone or in parallel with theoretical or numerical types, which can be quicker and, many a time, much more reliable. They are helpful in cases when scientists do not thoroughly know the physical and chemical rules that govern systems. In ANN modeling, there is no requirement for a deep knowledge of the processes and mathematical equations that govern them. Neural networks are commonly used for the estimation of membrane performance characteristics such as the permeate flux and rejection over the entire range of the process variables, such as pressure, solute concentration, temperature, superficial flow velocity, etc. This review investigates the important aspects of ANNs such as methods of development and training, and modeling strategies in correlation with different types of applications [microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO), electrodialysis (ED), etc.]. It also deals with particular types of ANNs that have been confirmed to be effective in practical applications and points out the advantages and disadvantages of using them. The combination of ANN with accurate model predictions and a mechanistic model with less accurate predictions that render physical and chemical laws can provide a thorough understanding of a process.
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Affiliation(s)
- Morteza Asghari
- Separation Processes Research Group (SPRG), Department of Engineering , University of Kashan , Kashan 8731753153 , Iran
- Energy Research Institute , University of Kashan , Ghotb–e–Ravandi Avenue , Kashan , Iran
| | - Amir Dashti
- Separation Processes Research Group (SPRG), Department of Engineering , University of Kashan , Kashan 8731753153 , Iran
| | - Mashallah Rezakazemi
- Faculty of Chemical and Materials Engineering , Shahrood University of Technology , Shahrood , Iran
| | - Ebrahim Jokar
- Separation Processes Research Group (SPRG), Department of Engineering , University of Kashan , Kashan 8731753153 , Iran
| | - Hadi Halakoei
- Separation Processes Research Group (SPRG), Department of Engineering , University of Kashan , Kashan 8731753153 , Iran
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Farhadi M, Pazuki G, Raisi A. Modeling of the pervaporation process for isobutanol purification from aqueous solution using intelligent systems. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1405987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mozhdeh Farhadi
- Chemical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| | - Gholamreza Pazuki
- Chemical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| | - Ahmadreza Raisi
- Chemical Engineering Department, Amirkabir University of Technology, Tehran, Iran
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Structure and performance characterization of PDMS/PES-based pervaporation membranes for ethanol/water separation. IRANIAN POLYMER JOURNAL 2015. [DOI: 10.1007/s13726-015-0387-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ji L, Shi B, Wang L. Pervaporation separation of ethanol/water mixture using modified zeolite filled PDMS membranes. J Appl Polym Sci 2015. [DOI: 10.1002/app.41897] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lingyun Ji
- Polymer Membrane Laboratory; College of Science, Northeast Forestry University; Harbin 150040 China
| | - Baoli Shi
- Polymer Membrane Laboratory; College of Science, Northeast Forestry University; Harbin 150040 China
| | - Lili Wang
- Polymer Membrane Laboratory; College of Science, Northeast Forestry University; Harbin 150040 China
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Khajeh M, Golzary AR. Synthesis of zinc oxide nanoparticles-chitosan for extraction of methyl orange from water samples: cuckoo optimization algorithm-artificial neural network. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 131:189-194. [PMID: 24835725 DOI: 10.1016/j.saa.2014.04.084] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/24/2014] [Accepted: 04/17/2014] [Indexed: 06/03/2023]
Abstract
In this work, zinc nanoparticles-chitosan based solid phase extraction has been developed for separation and preconcentration of trace amount of methyl orange from water samples. Artificial neural network-cuckoo optimization algorithm has been employed to develop the model for simulation and optimization of this method. The pH, volume of elution solvent, mass of zinc oxide nanoparticles-chitosan, flow rate of sample and elution solvent were the input variables, while recovery of methyl orange was the output. The optimum conditions were obtained by cuckoo optimization algorithm. At the optimum conditions, the limit of detections of 0.7μgL(-1)was obtained for the methyl orange. The developed procedure was then applied to the separation and preconcentration of methyl orange from water samples.
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Affiliation(s)
- Mostafa Khajeh
- Department of Chemistry, University of Zabol, P.O. Box 98615-538, Zabol, Iran.
| | - Ali Reza Golzary
- Department of Chemistry, University of Zabol, P.O. Box 98615-538, Zabol, Iran
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López ME, Boger Z, Rene ER, Veiga MC, Kennes C. Transient-state studies and neural modeling of the removal of a gas-phase pollutant mixture in a biotrickling filter. JOURNAL OF HAZARDOUS MATERIALS 2014; 269:45-55. [PMID: 24315813 DOI: 10.1016/j.jhazmat.2013.11.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/31/2013] [Accepted: 11/07/2013] [Indexed: 06/02/2023]
Abstract
The removal efficiency (RE) of gas-phase hydrogen sulfide (H), methanol (M) and α-pinene (P) in a biotrickling filter (BTF) was modeled using artificial neural networks (ANNs). The inlet concentrations of H, M, P, unit flow and operation time were used as the model inputs, while the outputs were the RE of H, M and P, respectively. After testing and validating the results, an optimal network topology of 5-8-3 was obtained. The model predictions were analyzed using Casual index (CI) values. M removal in the BTF was influenced positively by the inlet concentration of M in mixture (CI=3.79), while the removal of P and H were influenced more by the time of BTF operation (CI=25.36, 15.62). The BTF was subjected to different types of short-term shock-loads: 5-h shock-load of HMP mixture simultaneously, and 2.5-h shock-load of either H, M, or P, individually. It was observed that, short-term shock-loads of individual pollutants (M or H) did not significantly affect their own removal, but the removal of P was affected by 50%. The results from this study also show the sensitiveness of the well-acclimated BTF to handle sudden load variations and also revival capability of the BTF when pre-shock conditions were restored.
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Affiliation(s)
- M Estefanía López
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga, 10, 15008 La Coruña, Spain
| | - Zvi Boger
- OPTIMAL - Industrial Neural Systems, 54 Rambal St., Be'er Sheva 84243, Israel
| | - Eldon R Rene
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga, 10, 15008 La Coruña, Spain
| | - María C Veiga
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga, 10, 15008 La Coruña, Spain
| | - Christian Kennes
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga, 10, 15008 La Coruña, Spain.
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Tan M, He G, Nie F, Zhang L, Hu L. Optimization of ultrafiltration membrane fabrication using backpropagation neural network and genetic algorithm. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2013.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Vinh-Thang H, Kaliaguine S. Predictive Models for Mixed-Matrix Membrane Performance: A Review. Chem Rev 2013; 113:4980-5028. [DOI: 10.1021/cr3003888] [Citation(s) in RCA: 375] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hoang Vinh-Thang
- Department
of Chemical Engineering, Laval University, Quebec, Canada
| | - Serge Kaliaguine
- Department
of Chemical Engineering, Laval University, Quebec, Canada
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