TY - JOUR
T1 - Preparation of Chitosan/Bone Char/ Fe 3O 4 Nanocomposite for Adsorption of Hexavalent Chromium in Aquatic Environments
AU - Soltani, Reza Darvishi Cheshmeh
AU - Safari, Mahdi
AU - maleki, Afshin
AU - Rezaee, Reza
AU - Teymouri, Pari
AU - Hashemi, Seyed Enayat
AU - Ghanbari, Reza
AU - Zandsalimi, Yahya
N1 - Publisher Copyright:
© 2018, King Fahd University of Petroleum & Minerals.
PY - 2018/11/1
Y1 - 2018/11/1
N2 - In this study, magnetic chitosan/bone char/Fe 3O 4 nanocomposite (MCB–Fe 3O 4 nanocomposite) was prepared and utilized as an adsorbent for the removal of Cr(VI) from aqueous environments. The effects of influencing parameters such as initial concentration of Cr(VI), adsorbent dose, initial pH, mixing rate, salinity and the existing of competing organic compounds on the adsorption of Cr(VI) were investigated. According to the obtained results, the adsorption process followed the pseudo-first-order kinetic model and Langmuir adsorption isotherm model. Decreasing initial pH from 11 to 2 resulted in increasing the removal efficiency (%) from 24.94 to 88.60%, respectively. Also, the efficiency (%) of Cr(VI) removal increased from 33.73 to 98.81% when the dose of adsorbent rose from 0.25 to 4.0 g/L, respectively. The presence of ethanol and humic acid in solution resulted in decreasing the removal efficiency (%) of Cr(VI) ions.
AB - In this study, magnetic chitosan/bone char/Fe 3O 4 nanocomposite (MCB–Fe 3O 4 nanocomposite) was prepared and utilized as an adsorbent for the removal of Cr(VI) from aqueous environments. The effects of influencing parameters such as initial concentration of Cr(VI), adsorbent dose, initial pH, mixing rate, salinity and the existing of competing organic compounds on the adsorption of Cr(VI) were investigated. According to the obtained results, the adsorption process followed the pseudo-first-order kinetic model and Langmuir adsorption isotherm model. Decreasing initial pH from 11 to 2 resulted in increasing the removal efficiency (%) from 24.94 to 88.60%, respectively. Also, the efficiency (%) of Cr(VI) removal increased from 33.73 to 98.81% when the dose of adsorbent rose from 0.25 to 4.0 g/L, respectively. The presence of ethanol and humic acid in solution resulted in decreasing the removal efficiency (%) of Cr(VI) ions.
KW - Adsorption
KW - Bone char
KW - Hexavalent chromium
KW - Nanocomposite
KW - Polymeric matrix
UR - http://www.scopus.com/inward/record.url?scp=85054541102&partnerID=8YFLogxK
U2 - 10.1007/s13369-017-3030-0
DO - 10.1007/s13369-017-3030-0
M3 - Article
AN - SCOPUS:85054541102
SN - 2193-567X
VL - 43
SP - 5799
EP - 5808
JO - Arabian Journal for Science and Engineering
JF - Arabian Journal for Science and Engineering
IS - 11
ER -