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Number of results

Journal

2012 | 10 | 6 | 1969-1979

Article title

Chitosan/anionic surfactant microparticles synthesized by high pressure spraying method for removal of phenolic pollutants

Content

Title variants

Languages of publication

EN

Abstracts

EN
Biopolymeric microparticles were prepared by rapid expansion of high pressure CO2-chitosan (Chi) solution in sodium bis-(2-ethyl hexyl) sulfosuccinate (AOT) solution. At pressures higher than 2 MPa, ultrafine particles were formed while under this value, wires were obtained. The formation of Chi/AOT complex was confirmed by Fourier Transform Infrared (FTIR) Spectroscopy, whereas scanning electron microscopy was used to characterize the morphology, size and shape of the particles. The FTIR spectrum proved the interaction between the sulfonate groups of AOT and the amino groups of Chi. Microparticles are quasi-spherical in wet conditions and irregular after freeze drying, presenting a rough surface with many pores. Lyophilized hydrophobic microparticles were used to remove phenol and o-cresol from aqueous solution, and the adsorption process showed a maximum efficiency in the 7–8 pH range. The uptake of phenol and o-cresol increased with the amount of particles and decreased with increasing the pollutant concentration. The adsorption occurred rapidly in the first 60–120 minutes, and leveled off thereafter. [...]

Publisher

Journal

Year

Volume

10

Issue

6

Pages

1969-1979

Physical description

Dates

published
1 - 12 - 2012
online
21 - 9 - 2012

Contributors

author
  • Department of Colloids, Institute of Physical Chemistry “I. Murgulescu”, 060021, Bucharest, Romania
  • Department of Physical Chemistry, University of Bucharest, 030018, Bucharest, Romania
  • Department of Colloids, Institute of Physical Chemistry “I. Murgulescu”, 060021, Bucharest, Romania
author
  • Department of Physical Chemistry, University of Bucharest, 030018, Bucharest, Romania
  • Department of Colloids, Institute of Physical Chemistry “I. Murgulescu”, 060021, Bucharest, Romania
  • Department of Colloids, Institute of Physical Chemistry “I. Murgulescu”, 060021, Bucharest, Romania

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11532-012-0126-y
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