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Evolution of Physicochemical Structure of Waste Cotton Fiber (Hydrochar) During Hydrothermal Carbonation

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
To study the hydrothermal behavior of cotton fiber, the carbonization process and structural evolution of discarded or waste cotton fiber (WCF) under hydrothermal conditions were investigated using microcrystalline cellulose (MCC), and glucose was used as a model compound. Results showed that high temperature was beneficial for the hydrolysis of discarded cotton fiber, and the yield of sugar was 4.5%, which was lower than that of MCC (6.51%). WCF and MCC were carbonized at 240–~260°C and 220–~240°C, respectively, whereas the carbonization temperature of glucose was lower than 220°C. The C/O ratios of WCF and glucose hydrothermal products were 5.79 and 5.85, respectively. The three kinds of hydrothermal carbonization products had similar crystal structures and oxygen-containing functional groups. The carbonized products of WCF contained many irregular particles, while the main products of glucose carbonization were 0.5-mm-sized carbon microspheres (CMSs). Results showed that glucose was an important intermediate in WCF carbonization and that there were two main pathways of hydrothermal carbonization of cotton fibers: some cotton fibers were completely hydrolyzed into glucose accompanied by nucleation and then the growth of CMSs. For the other part, the glucose ring of the oligosaccharide, formed by the incomplete hydrolysis of cotton fibers under hydrothermal conditions of high temperature and pressure, breaks and then forms particulate matter.
Rocznik
Strony
319--326
Opis fizyczny
Bibliogr. 26 poz.
Twórcy
autor
  • College of Textile Engineering, Taiyuan University of Technology, Jinzhong 030600, Shanxi, China
  • College of Textile Engineering, Taiyuan University of Technology, Jinzhong 030600, Shanxi, China
autor
  • College of Textile Engineering, Taiyuan University of Technology, Jinzhong 030600, Shanxi, China
autor
  • College of Textile Engineering, Taiyuan University of Technology, Jinzhong 030600, Shanxi, China
autor
  • College of Textile Engineering, Taiyuan University of Technology, Jinzhong 030600, Shanxi, China
Bibliografia
  • [1] Khajenoori, M., Haghighi Asl, A., Hormozi, F. (2009). Proposed models for subcritical water extraction of essential oils. Chinese Journal of Chemical Engineering, 17, 359-365.
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  • [3] Sevilla, M., Fuertes, A. B. (2009). Chemical and structural properties of carbonaceous products obtained by hydrothermal carbonization of saccharides. Chemistry-A European Journal, 15, 4195-4203.
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Uwagi
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-cbdb8471-6ff5-489f-88ae-eb1f380d92db
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