Affordable Access

deepdyve-link
Publisher Website

Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide.

Authors
  • Hamidzadeh, Soheila
  • Torabbeigi, Marzieh
  • Shahtaheri, Seyed Jamaleddin
Type
Published Article
Journal
Journal of environmental health science & engineering
Publication Date
Jan 01, 2015
Volume
13
Pages
8–8
Identifiers
DOI: 10.1186/s40201-015-0156-4
PMID: 25699186
Source
Medline
Keywords
License
Unknown

Abstract

Magnetically modified activated carbon, which synthesized by nanomagnetic iron oxide, was used for fast and effective removal of Crystal Violet from aqueous solutions. The scanning electron microscopy (SEM) images of nano-adsorbent showed that the average sizes of adsorbent are less than 100 nm. The various parameters, affecting on adsorption process, were examined including pH and temperature of dye solution, dose of adsorbent, and contact time. Then, thermodynamic parameters of sorption were calculated. Langmuir and Freundlich isotherms were used to fit the resulting data. Adsorption kinetics was consistent with a pseudo second order equation. Thermodynamic parameters of adsorption, ∆H(0), and ∆S(0) were calculated. Also, for further investigations, nano magnetic iron oxides was synthesized and used as adsorbent. Sorption capacities were depending on the temperature varied from 44.7 to 67.1 mg/g and from 12.7 to 16.5 mg/g for magnetically modified activated carbon and nanomagnetic iron oxide, respectively.

Report this publication

Statistics

Seen <100 times