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De Vos L, Van de Voorde B, Van Daele L, Dubruel P, Van Vlierberghe S. Poly(alkylene terephthalate)s: From current developments in synthetic strategies towards applications. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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2
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Gebre SH, Sendeku MG, Bahri M. Recent Trends in the Pyrolysis of Non-Degradable Waste Plastics. ChemistryOpen 2021; 10:1202-1226. [PMID: 34873881 PMCID: PMC8649616 DOI: 10.1002/open.202100184] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/10/2021] [Indexed: 01/16/2023] Open
Abstract
Waste plastics are non-degradable constituents that can stay in the environment for centuries. Their large land space consumption is unsafe to humans and animals. Concomitantly, the continuous engineering of plastics, which causes depletion of petroleum, poses another problem since they are petroleum-based materials. Therefore, energy recovering trough pyrolysis is an innovative and sustainable solution since it can be practiced without liberating toxic gases into the atmosphere. The most commonly used plastics, such as HDPE, LDPE (high- and low-density polyethylene), PP (polypropylene), PS (polystyrene), and, to some extent, PC (polycarbonate), PVC (polyvinyl chloride), and PET (polyethylene terephthalate), are used for fuel oil recovery through this process. The oils which are generated from the wastes showed caloric values almost comparable with conventional fuels. The main aim of the present review is to highlight and summarize the trends of thermal and catalytic pyrolysis of waste plastic into valuable fuel products through manipulating the operational parameters that influence the quality or quantity of the recovered results. The properties and product distribution of the pyrolytic fuels and the depolymerization reaction mechanisms of each plastic and their byproduct composition are also discussed.
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Affiliation(s)
| | - Marshet Getaye Sendeku
- CAS Center for Excellence in NanoscienceCAS Key Laboratory of Nanosystem and Hierarchical FabricationNational Center for Nanoscience and TechnologyBeijing100190P.R. China
- University of Chinese Academy of ScienceBeijing100190P.R. China
| | - Mohamed Bahri
- University of Chinese Academy of ScienceBeijing100190P.R. China
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Wang J, Zheng W, Zhang Y, Song S, Chou IM, Hu M, Pan Z. Raman spectroscopic technique towards understanding the degradation of phenol by sodium persulfate in hot compressed water. CHEMOSPHERE 2020; 257:127264. [PMID: 32516671 DOI: 10.1016/j.chemosphere.2020.127264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/19/2020] [Accepted: 05/29/2020] [Indexed: 06/11/2023]
Abstract
Degradation of phenol by sodium persulfate (SPS) in hot compressed water (HCW) was investigated in a lab-built fused quartz tube reactor (FQTR) coupled with Raman spectroscopy system. The species of S2O82-, SO42-, HSO4-, SO32- and HSO3- in the reaction system were qualitatively and quantitatively analyzed by Raman spectroscopy. The hydrothermal stability of phenol and SPS at different temperature and the degradation of phenol by SPS were also studied. The results indicated that phenol was not stable in aqueous solution above 200 °C, and that only SO42- was generated in the hydrolysis of SPS at temperatures below 50 °C, and SO42- and HSO4- were generated at higher temperatures. The maximum conversion rate (90.93%) and mineralization efficiency (38.88%) of phenol by SPS was obtained at reaction temperature of 300 °C with 180 min reaction time. During the degradation of phenol by SPS, HSO4- was the main product and S∗ (not detected by Raman spectroscopy) exhibits a positive correlation with temperature. In addition, a degradation pathway of phenol by SPS was proposed. The degradation data for the kinetic analysis indicated that the reaction followed pseudo first-order kinetics, and the reaction rate constants (ks) were given as k50 °C = 0.0083 min-1, k100°C = 0.0197 min-1, k200 °C = 0.0498 min-1, k300 °C = 0.0619 min-1 and k400°C = 0.0505 min-1 at 30 min reaction. Moreover, the activation energy (12.580 kJ mol-1), the enthalpy change (9.064 kJ mol-1) and the entropy change (-222.104 J mol-1) of the reaction were also calculated.
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Affiliation(s)
- Junliang Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Weicheng Zheng
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Yuqing Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - I-Ming Chou
- CAS Key Laboratory of Experimental Study Under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, Hainan, China
| | - Mian Hu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China.
| | - Zhiyan Pan
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China.
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Bei K, Ma P, Wang J, Li K, Lyu J, Hu Z, Chou IM, Pan Z. Depolymerization of poly(ethylene naphthalate) in fused silica capillary reactor and autoclave reactor from 240 to 280°C in subcritical water. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24523] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Ke Bei
- Department of Environmental Engineering; Zhejiang University of Technology; Hangzhou 310032 China
| | - Peixia Ma
- Department of Environmental Engineering; Zhejiang University of Technology; Hangzhou 310032 China
| | - Junliang Wang
- Department of Environmental Engineering; Zhejiang University of Technology; Hangzhou 310032 China
| | - Kai Li
- Department of Environmental Engineering; Zhejiang University of Technology; Hangzhou 310032 China
| | - Jinghui Lyu
- Department of Environmental Engineering; Zhejiang University of Technology; Hangzhou 310032 China
| | - Zhichao Hu
- Department of Environmental Engineering; Zhejiang University of Technology; Hangzhou 310032 China
| | - I-Ming Chou
- Laboratory for Experimental Study Under Deep-sea Extreme Conditions; Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences; Sanya 572000 China
| | - Zhiyan Pan
- Department of Environmental Engineering; Zhejiang University of Technology; Hangzhou 310032 China
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Ono T, Ota M, Sato Y, Inomata H. Hydrogen bond lifetimes in supercritical methanol–water mixtures via MD simulation. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1213435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Takumi Ono
- Research Center of Supercritical Fluid Technology, Tohoku University, Sendai, Japan
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Masaki Ota
- Research Center of Supercritical Fluid Technology, Tohoku University, Sendai, Japan
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Yoshiyuki Sato
- Research Center of Supercritical Fluid Technology, Tohoku University, Sendai, Japan
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Hiroshi Inomata
- Research Center of Supercritical Fluid Technology, Tohoku University, Sendai, Japan
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
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Ahmad N, Abnisa F, Daud WMAW. Potential use of natural rubber to produce liquid fuels using hydrous pyrolysis – a review. RSC Adv 2016. [DOI: 10.1039/c6ra09085k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Natural rubber is a tropical plantation crop that mainly consists of polyisoprene (cis-1,4-polyisoprene). It can be converted into fuels and other useful chemical commodities by depolymerization processes, with the hydrous pyrolysis being the most cost-effective.
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Affiliation(s)
- Nabeel Ahmad
- Department of Chemical Engineering
- Faculty of Engineering
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - Faisal Abnisa
- Department of Chemical Engineering
- Faculty of Engineering
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - Wan Mohd Ashri Wan Daud
- Department of Chemical Engineering
- Faculty of Engineering
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
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Hori H, Sakamoto T, Ohmura K, Yoshikawa H, Seita T, Fujita T, Morizawa Y. Efficient-Oxygen Induced Mineralization of Melt-Processable Fluoropolymers in Subcritical and Supercritical Water. Ind Eng Chem Res 2014. [DOI: 10.1021/ie500446s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Hisao Hori
- Department
of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Takehiko Sakamoto
- Department
of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Kenta Ohmura
- Department
of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Haruka Yoshikawa
- Department
of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Tomohisa Seita
- Department
of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan
| | - Tomoyuki Fujita
- Research
Center, Asahi Glass Co., 1150 Hazawa-cho, Kanagawa-ku,
Yokohama, Kanagawa 221-8755, Japan
| | - Yoshitomi Morizawa
- Research
Center, Asahi Glass Co., 1150 Hazawa-cho, Kanagawa-ku,
Yokohama, Kanagawa 221-8755, Japan
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8
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Degradation process investigation of thermoplastic polyurethane elastomer in supercritical methanol. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.09.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Pan Z, Shi Y, Liu L, Jin Z. Depolymerization of poly(butylene terephthalate) in sub- and supercritical ethanol in a fused silica capillary reactor or autoclave reactor. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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