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Functionality of nano and 3D-microhierarchical TiO₂ particles as coagulants for sericin extraction from the silk degumming wastewater

Pakdel, Esfandiar, Wang, Jinfeng, Allardyce, Benjamin J., Rajkhowa, Rangam and Wang, Xungai 2016, Functionality of nano and 3D-microhierarchical TiO₂ particles as coagulants for sericin extraction from the silk degumming wastewater, Separation and purification technology, vol. 170, pp. 92-101, doi: 10.1016/j.seppur.2016.06.025.

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Title Functionality of nano and 3D-microhierarchical TiO₂ particles as coagulants for sericin extraction from the silk degumming wastewater
Author(s) Pakdel, Esfandiar
Wang, JinfengORCID iD for Wang, Jinfeng orcid.org/0000-0002-2568-2170
Allardyce, Benjamin J.ORCID iD for Allardyce, Benjamin J. orcid.org/0000-0003-4009-3371
Rajkhowa, RangamORCID iD for Rajkhowa, Rangam orcid.org/0000-0002-6811-9126
Wang, Xungai
Journal name Separation and purification technology
Volume number 170
Start page 92
End page 101
Total pages 10
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-10-01
ISSN 1383-5866
1873-3794
Keyword(s) Sericin
TiO2
Coagulation
Turbidity
3D-microhierarchical
Summary Amine-functionalised TiO2 particles were employed as coagulants to remove sericin from the silk degumming wastewater. Two types of TiO2 particles including 3D-microhierarchical TiO2 (Micron-size) and TiO2 nanoparticles (Degussa P-25) were used in this study. The surfaces of both types of TiO2 particles were functionalised using 3-aminopropyl trimethoxysilane (APTMS). The impacts of TiO2 type, pH, TiO2 concentration, and settling time on sericin removal efficiency were investigated. The efficiency of TiO2 particles in sericin removal was evaluated by measuring the residual turbidity and UV-vis spectra of the solutions before and after the treatment. Moreover, the COD, SDS-PAGE and protein assay tests were conducted to further analyse the treated solutions. The results demonstrated that the sericin removal efficiency of around 67% and turbidity reduction of 95% were achieved at the optimum conditions of 0.04 g TiO2, pH = 5, and 60 min settling time. Nano and micron-size TiO2 particles showed similar efficiency for sericin removal, but micron-size particles outweighed due to their higher efficiency in inducing greater turbidity reduction after 60 min. The obtained sericin/TiO2 composites were stable after several cycles of wash and could be useful in different fields including cosmetic, and textile finishing, among others.
Language eng
DOI 10.1016/j.seppur.2016.06.025
Field of Research 030306 Synthesis of Materials
091012 Textile Technology
091205 Functional Materials
050205 Environmental Management
0301 Analytical Chemistry
0904 Chemical Engineering
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30084854

Document type: Journal Article
Collection: Institute for Frontier Materials
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