University of Oulu

Bhairavi Doshi, Eveliina Repo, Juha P. Heiskanen, Juho Antti Sirviö, Mika Sillanpää, Effectiveness of N,O-carboxymethyl chitosan on destabilization of Marine Diesel, Diesel and Marine-2T oil for oil spill treatment, Carbohydrate Polymers, Volume 167, 1 July 2017, Pages 326-336, ISSN 0144-8617, (

Effectiveness of N,O-carboxymethyl chitosan on destabilization of Marine Diesel, Diesel and Marine-2T oil for oil spill treatment

Saved in:
Author: Doshi, Bhairavi1; Repo, Eveliina1; Heiskanen, Juha P.2;
Organizations: 1Laboratory of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, Mikkeli 50130, Finland
2Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, FI-90014, Finland
3Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.6 MB)
Persistent link:
Language: English
Published: Elsevier, 2017
Publish Date: 2017-03-30


Oil spills are the significant sources of hydrocarbons entering in the receiving aquatic environment. An efficient method to remove hydrocarbons from water resources is adsorption. In this study, water soluble N,O-carboxymethyl chitosan (NO-CS) was synthesized by carboxymethylation of chitosan in a hydro-alcoholic medium at 50 °C by chloroacetic acid. The polymer was characterized through degree of deacetylation, degree of substitution, FTIR and 1H NMR. Effectiveness of NO-CS as an adsorbent was studied as a function of dosage, salinity and pH to destabilize the Marine diesel (Oil-1), Diesel (Oil-2) and Marine-2T oil (Oil-3) into small oil droplets of less than 100 μm. Optical microscope was used for studying the size of oil droplets and adsorption effect of the oils on this polymer. The destabilization of marine diesel was the most effective among the studied three oils, which showed excellent adsorption at sea water alkalinity and salinity.

see all

Series: Carbohydrate polymers
ISSN: 0144-8617
ISSN-E: 1879-1344
ISSN-L: 0144-8617
Volume: 167
Pages: 326 - 336
DOI: 10.1016/j.carbpol.2017.03.064
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
215 Chemical engineering
Funding: This work was funded by the European Union Structural Funds as a part of VIKE project (A70963: Improvement of the oil spill prevention and response with the green chemicals).
Copyright information: © 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-NDlicense (