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Yasin N, Naqvi SMD, Akhter SM. Simultaneous spectrophotometric determination of Co (II) and Co (III) in acidic medium with partial least squares regression and artificial neural networks. Heliyon 2024; 10:e26373. [PMID: 38404845 PMCID: PMC10884494 DOI: 10.1016/j.heliyon.2024.e26373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 12/18/2023] [Accepted: 02/12/2024] [Indexed: 02/27/2024] Open
Abstract
This study aims at the application of two chemometric techniques to visible spectra of acetic acid solutions of Co (II) and Co (III) for simultaneous determination thereof. Spectral data of 145 samples in the range of 400-700 nm were used to build the models. Partial least squares regression models were developed for which latent variables were determined using internal cross-validation with a leave-one-out strategy and 3 and 2 latent variables were selected for Co(II) and Co(III) based on root mean square error of cross-validation. For these models, root mean square errors of prediction were 1.16 and 0.536 mM and coefficients of determination were 0.975 and 0.892 for Co (II) and Co (III). As an alternate method, artificial neural networks consisting of three layers, with 10 neurons in hidden layer, were trained to model spectra and concentrations of cobalt species. Levenberg-Marquardt algorithm with feed-forward back-propagation learning resulted root mean square errors of prediction of 0.316 and 0.346 mM for Co (II) and Co (III) respectively and coefficients of determination were 0.996 and 0.988.
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Affiliation(s)
- Nausheen Yasin
- Department of Applied Chemistry and Chemical Technology, University of Karachi, Karachi, Pakistan
| | - Syed Mumtaz Danish Naqvi
- Department of Applied Chemistry and Chemical Technology, University of Karachi, Karachi, Pakistan
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Papamichael I, Voukkali I, Economou F, Loizia P, Demetriou G, Esposito M, Naddeo V, Liscio MC, Sospiro P, Zorpas AA. Mobilisation of textile waste to recover high added value products and energy for the transition to circular economy. ENVIRONMENTAL RESEARCH 2024; 242:117716. [PMID: 37995999 DOI: 10.1016/j.envres.2023.117716] [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: 10/18/2023] [Revised: 11/09/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023]
Abstract
The textile industry is a major contributor to global waste, with millions of tons of textiles being discarded annually. Material and energy recovery within circular economy offer sustainable solutions to this problem by extending the life cycle of textiles through repurposing, recycling, and upcycling. These initiatives not only reduce waste but also contribute to the reduction of the demand for virgin materials (i.e. cotton, wool), ultimately benefiting the environment and society. The circular economy approach, which aims to recreate environmental, economic, and societal value, is based on three key principles: waste reduction, material circulation, and ecological restoration. Given these difficulties, circularity incorporates the material recovery approach, which is focused on the conversion of waste into secondary raw resources. The goal of this notion is to extract more value from resources by prolonging final disposal as long as feasible. When a textile has outlived its functional life, material recovery is critical for returning the included materials or energy into the manufacturing cycle. The aim of this paper is to examine the material and energy recovery options of main raw materials used in the fashion industry while highlighting the need of close observation of the relation between circularity and material recovery, including the investigation of barriers to the transition towards a truly circular fashion industry. The final results refer to the main barriers of circular economy transition within the industry and a framework is proposed. These insights are useful for academia, engineers, policy makers and other key stakeholders for the clear understanding of the industry from within and highlight beyond circular economy targets, SDGs interactions with energy and material recovery of textile waste (SDG 7, SDG 11, SDG 12 etc.).
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Affiliation(s)
- Iliana Papamichael
- Laboratory of Chemical Engineering and Engineering Sustainability, Faculty of Pure and Applied Sciences, Open University of Cyprus. Giannou Kranidioti 89, Latsia, Nicosia, 2231, Cyprus.
| | - Irene Voukkali
- Laboratory of Chemical Engineering and Engineering Sustainability, Faculty of Pure and Applied Sciences, Open University of Cyprus. Giannou Kranidioti 89, Latsia, Nicosia, 2231, Cyprus.
| | - Florentios Economou
- Laboratory of Chemical Engineering and Engineering Sustainability, Faculty of Pure and Applied Sciences, Open University of Cyprus. Giannou Kranidioti 89, Latsia, Nicosia, 2231, Cyprus.
| | - Pantelitsa Loizia
- Laboratory of Chemical Engineering and Engineering Sustainability, Faculty of Pure and Applied Sciences, Open University of Cyprus. Giannou Kranidioti 89, Latsia, Nicosia, 2231, Cyprus
| | - Giorgos Demetriou
- École des Ponts Business School, Circular Economy Research Center, 6 Place du Colonel Bourgoin, 75012, Paris, France.
| | - Mark Esposito
- Hult International Business School, 1 Education St, Cambridge, MA, 02141, United States; Harvard University. Division of Continuing Education 51, Brattle Street Cambridge, MA, 02138, United States.
| | - Vincenzo Naddeo
- Sanitary Environmental Engineering Division, Department of Civil Engineering, University of Salerno, via Giovanni Paolo II, 84084, Fisciano, SA, Italy.
| | - Marco Ciro Liscio
- Dipartimento di Ingegneria dell'Informazione, Università Politecnica delle Marche, Ancona, Marche, 60131, Italy.
| | - Paolo Sospiro
- Dipartimento di Ingegneria dell'Informazione, Università Politecnica delle Marche, Ancona, Marche, 60131, Italy; EUAbout, Bruxelles, Bruxelles, 1000, Belgium.
| | - Antonis A Zorpas
- Laboratory of Chemical Engineering and Engineering Sustainability, Faculty of Pure and Applied Sciences, Open University of Cyprus. Giannou Kranidioti 89, Latsia, Nicosia, 2231, Cyprus.
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Pervez MN, Yeo WS, Mishu MMR, Talukder ME, Roy H, Islam MS, Zhao Y, Cai Y, Stylios GK, Naddeo V. Electrospun nanofiber membrane diameter prediction using a combined response surface methodology and machine learning approach. Sci Rep 2023; 13:9679. [PMID: 37322139 DOI: 10.1038/s41598-023-36431-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/03/2023] [Indexed: 06/17/2023] Open
Abstract
Despite the widespread interest in electrospinning technology, very few simulation studies have been conducted. Thus, the current research produced a system for providing a sustainable and effective electrospinning process by combining the design of experiments with machine learning prediction models. Specifically, in order to estimate the diameter of the electrospun nanofiber membrane, we developed a locally weighted kernel partial least squares regression (LW-KPLSR) model based on a response surface methodology (RSM). The accuracy of the model's predictions was evaluated based on its root mean square error (RMSE), its mean absolute error (MAE), and its coefficient of determination (R2). In addition to principal component regression (PCR), locally weighted partial least squares regression (LW-PLSR), partial least square regression (PLSR), and least square support vector regression model (LSSVR), some of the other types of regression models used to verify and compare the results were fuzzy modelling and least square support vector regression model (LSSVR). According to the results of our research, the LW-KPLSR model performed far better than other competing models when attempting to forecast the membrane's diameter. This is made clear by the much lower RMSE and MAE values of the LW-KPLSR model. In addition, it offered the highest R2 values that could be achieved, reaching 0.9989.
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Affiliation(s)
- Md Nahid Pervez
- Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan, 430200, China
- Sanitary Environmental Engineering Division (SEED), Department of Civil Engineering, University of Salerno, 84084, Fisciano, Italy
| | - Wan Sieng Yeo
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Mst Monira Rahman Mishu
- Faculty of Nutrition and Food Science, Patuakhali Science and Technology University, Patuakhali, 8602, Bangladesh
| | - Md Eman Talukder
- Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan, 430200, China
| | - Hridoy Roy
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh
| | - Md Shahinoor Islam
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh
| | - Yaping Zhao
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, and Institute of Eco-Chongming, Shanghai, 200241, China
| | - Yingjie Cai
- Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan, 430200, China.
| | - George K Stylios
- Research Institute for Flexible Materials, School of Textiles and Design, Heriot-Watt University, Galashiels, TD1 3HF, UK.
| | - Vincenzo Naddeo
- Sanitary Environmental Engineering Division (SEED), Department of Civil Engineering, University of Salerno, 84084, Fisciano, Italy.
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