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Li Z, Cheng C, Ming X, Cong Y, Li Q, Wei Z, Ma X. A Study on the Reaction Mechanisms and Process Safety of Pyrisoxazole Synthesis. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ziliang Li
- School of Material Science and Engineering, Shenyang University of Technology, 111 Shenliao Road, Shenyang, Liaoning 110870, P. R. China
| | - Chunsheng Cheng
- School of Material Science and Engineering, Shenyang University of Technology, 111 Shenliao Road, Shenyang, Liaoning 110870, P. R. China
- Chemical Industry Safety Technology & Engineering Center, Shenyang Research Institute of Chemical Industry, 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
- Sinochem Safety Science Research (Shenyang) Co., Ltd., 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
| | - Xu Ming
- Chemical Industry Safety Technology & Engineering Center, Shenyang Research Institute of Chemical Industry, 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
- Sinochem Safety Science Research (Shenyang) Co., Ltd., 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
| | - Yunbo Cong
- School of Material Science and Engineering, Shenyang University of Technology, 111 Shenliao Road, Shenyang, Liaoning 110870, P. R. China
| | - Quanguo Li
- Chemical Industry Safety Technology & Engineering Center, Shenyang Research Institute of Chemical Industry, 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
- Sinochem Safety Science Research (Shenyang) Co., Ltd., 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
| | - Zhenyun Wei
- School of Material Science and Engineering, Shenyang University of Technology, 111 Shenliao Road, Shenyang, Liaoning 110870, P. R. China
- Chemical Industry Safety Technology & Engineering Center, Shenyang Research Institute of Chemical Industry, 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
- Sinochem Safety Science Research (Shenyang) Co., Ltd., 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
| | - Xiaohua Ma
- School of Material Science and Engineering, Shenyang University of Technology, 111 Shenliao Road, Shenyang, Liaoning 110870, P. R. China
- Chemical Industry Safety Technology & Engineering Center, Shenyang Research Institute of Chemical Industry, 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
- Sinochem Safety Science Research (Shenyang) Co., Ltd., 8 Shenliao Road, Shenyang, Liaoning 110021, P. R. China
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Ügdüler S, Van Geem KM, Roosen M, Delbeke EIP, De Meester S. Challenges and opportunities of solvent-based additive extraction methods for plastic recycling. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 104:148-182. [PMID: 31978833 DOI: 10.1016/j.wasman.2020.01.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/17/2019] [Accepted: 01/05/2020] [Indexed: 05/28/2023]
Abstract
Additives are ubiquitously used in plastics to improve their functionality. However, they are not always desirable in their 'second life' and are a major bottleneck for chemical recycling. Although research on extraction techniques for efficient removal of additives is increasing, it resembles much like uncharted territory due to the broad variety of additives, plastics and removal techniques. Today solvent-based additive extraction techniques, solid-liquid extraction and dissolution-precipitation, are considered to be the most promising techniques to remove additives. This review focuses on the assessment of these techniques by making a link between literature and physicochemical principles such as diffusion and Hansen solubility theory. From a technical point of view, dissolution-precipitation is preferred to remove a broad spectrum of additives because diffusion limitations affect the solid-liquid extraction recoveries. Novel techniques such as accelerated solvent extraction (ASE) are promising for finding the balance between these two processes. Because of limited studies on the economic and environmental feasibility of extraction methods, this review also includes a basic economic and environmental assessment of two extreme cases for the extraction of additives. According to this assessment, the feasibility of additives removal depends strongly on the type of additive and plastic and also on the extraction conditions. In the best-case scenario at least 70% of solvent recovery is required to extract plasticizers from polyvinyl chloride (PVC) via dissolution-precipitation with tetrahydrofuran (THF), while solid-liquid extraction of phenolic antioxidants and a fatty acid amide slip agents from polypropylene (PP) with dichloromethane (DCM) can be economically viable even without intensive solvent recovery.
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Affiliation(s)
- Sibel Ügdüler
- Laboratory for Circular Process Engineering, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Graaf Karel De Goedelaan 5, 8500 Kortrijk, Belgium
| | - Kevin M Van Geem
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, Technologiepark 914, B-9052 Zwijnaarde, Belgium
| | - Martijn Roosen
- Laboratory for Circular Process Engineering, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Graaf Karel De Goedelaan 5, 8500 Kortrijk, Belgium
| | - Elisabeth I P Delbeke
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, Technologiepark 914, B-9052 Zwijnaarde, Belgium
| | - Steven De Meester
- Laboratory for Circular Process Engineering, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Graaf Karel De Goedelaan 5, 8500 Kortrijk, Belgium.
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Chen W, Wu YN, Zhang B, Wang Y, Li F, Qi Z. Retardation behavior of hydration of calcium sulfate hemihydrate (bassanite) induced by sodium trimetaphosphate (STMP). CrystEngComm 2018. [DOI: 10.1039/c7ce02144e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct confirmation of the bassanite nanorod intermediate during the hydration of bulk bassanite in the presence of STMP.
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Affiliation(s)
- Wei Chen
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Yi-nan Wu
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Bingru Zhang
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Ying Wang
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Fengting Li
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Zeming Qi
- National Synchrotron Radiation Laboratory and College of Nuclear Science and Technology
- University of Science and Technology of China
- Hefei
- China
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Xu D, Bin Y, Tang P. Crystallization and Phase Separation of Branched Low Molecular Weight Polyethylene/Ultrahigh Molecular Weight Polyethylene Blend under a Controlled Temperature Gradient. Macromolecules 2010. [DOI: 10.1021/ma100056j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Duigong Xu
- Department of Polymer Science and Engineering
| | - Yuezhen Bin
- Department of Polymer Science and Engineering
- State Key Laboratory of Fine Chemicals
| | - Ping Tang
- Department of Polymer Science and Engineering
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Graciano-Verdugo AZ, Soto-Valdez H, Peralta E, Cruz-Zárate P, Islas-Rubio AR, Sánchez-Valdes S, Sánchez-Escalante A, González-Méndez N, González-Ríos H. Migration of α-tocopherol from LDPE films to corn oil and its effect on the oxidative stability. Food Res Int 2010. [DOI: 10.1016/j.foodres.2010.01.019] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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