A powdered orange peel combined carboxymethyl chitosan and its acylated derivative for the emulsification of marine diesel and 2T-oil with different qualities of water |
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Author: | Doshi, Bhairavi1; Hietala, Sami2; Sirviö, Juho3; |
Organizations: |
1Department of Green Chemistry, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland 2Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014, Finland 3Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014, Finland
4Department of Separation and Purification, School of Engineering Science, LUT University, Yliopistonkatu 34, FI-53850, Finland
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Format: | article |
Version: | published version |
Access: | open |
Online Access: | PDF Full Text (PDF, 5.9 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2019071823128 |
Language: | English |
Published: |
Elsevier,
2019
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Publish Date: | 2019-07-18 |
Description: |
AbstractThe traces of hazardous chemicals used in oil spill response have harmed marine creatures with long-term cytotoxic impacts, so, a greener alternative is to use biodegradable components in the dispersant formulation. This study demonstrates the efficiency of carboxymethylated and acylated chitosan combined with powdered orange peel (OP-D) in the emulsification of marine diesel and 2T-oil with different qualities of water. OP-D particles undergo Pickering emulsions, whereas the amphiphilic behaviour of the Blend and hydrophobically modified carboxymethyl chitosan-orange peels (CSOP-A) favours conventional emulsions through steric and electrostatic stabilization. The emulsion formation rate was maximum with OP-D in saline water and autonomous of the water quality with Blend. Additionally, different hydrophobic moieties on the surface of the Blend and CSOP-A affected the oil droplets’ stabilization rate. Changing pH altered the surface properties of particles and hence the nature of the formed emulsion range from gel-like to creamy, suggesting particle-particle to particle-oil interactions. An increase in electrolyte concentration enhanced the coalescence rate of marine diesel with CSOP-A. The oil droplet size in the formed emulsion increases with a temperature decrease up to 2 °C, and the emulsion stabilization rate was <10% at −20 °C. The traces of these synthesized materials were <1000 mg L⁻¹ in the water phase after the removal of oils. Since these materials are bio-based, their presence in the ecosystem is less hazardousness than commercial dispersants. see all
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Series: |
Journal of molecular liquids |
ISSN: | 0167-7322 |
ISSN-E: | 1873-3166 |
ISSN-L: | 0167-7322 |
Volume: | 291 |
Article number: | 111327 |
DOI: | 10.1016/j.molliq.2019.111327 |
OADOI: | https://oadoi.org/10.1016/j.molliq.2019.111327 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
215 Chemical engineering |
Subjects: | |
Funding: |
The authors are grateful to the Academy of Finland (decision number 283200) for funding this project. |
Copyright information: |
© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |