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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Doshi , B , Hietala , S , Sirviö , J A , Repo , E & Sillanpää , M 2019 , ' 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 ' , Journal of Molecular Liquids , vol. 291 , 111327 . https://doi.org/10.1016/j.molliq.2019.111327

Title: 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
Author: Doshi, Bhairavi; Hietala, Sami; Sirviö, Juho Antti; Repo, Eveliina; Sillanpää, Mika
Contributor: University of Helsinki, Department of Chemistry
Date: 2019-10-01
Language: eng
Number of pages: 13
Belongs to series: Journal of Molecular Liquids
ISSN: 0167-7322
URI: http://hdl.handle.net/10138/306050
Abstract: The traces of hazardous chemicals used in oil spill response have harmed marine creatures with long-term cytoxic 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 2 T-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
Subject: Orange peel powder
Modified chitosan
Hydrophobic modification
Emulsion stabilization
Water quality
Electrosteric stabilization
116 Chemical sciences
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