TY - JOUR
T1 - Effective Removal of Phosphate from Aqueous by Graphene Oxide Decorated with α- Fe 2O 3
T2 - Kinetic, Isotherm, Thermodynamic and Mechanism Study
AU - Bai, Lihua
AU - Yuan, Luyao
AU - Ji, Yi
AU - Yan, Hongxia
N1 - Publisher Copyright:
© 2018, King Fahd University of Petroleum & Minerals.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - The excessive phosphate discharged into the environment has damaged the ecosystem seriously. In this work, a kind of 3D adsorbents, α -Fe 2O 3 decorated graphene oxide (GO--Fe 2O 3) , was synthesized to deal with phosphate-polluted water. The phosphate adsorption capacity of GO--Fe 2O 3 reached to 93.28mgg-1, in 50mgL-1 phosphate solution at pH 6.0 and temperature 298 K, and the phosphate adsorption efficiency is very stable between the pH range of 2.0–10.5 and temperature range of 293–333 K. The adsorption progress is rapid, and adsorption equilibrium was reached within 5 min. The phosphate adsorption behavior of GO--Fe 2O 3 fitted the Langmuir model, and the adsorption kinetic fitted the pseudo-second-order model. Ion exchange and electrostatic attraction are the main reactions in the adsorption process. Physical adsorption and chemical adsorption both are in the adsorption process. The phosphate adsorption progress is stable and rapid; thus, it is a good choice to deal with phosphate-polluted water by GO--Fe 2O 3.
AB - The excessive phosphate discharged into the environment has damaged the ecosystem seriously. In this work, a kind of 3D adsorbents, α -Fe 2O 3 decorated graphene oxide (GO--Fe 2O 3) , was synthesized to deal with phosphate-polluted water. The phosphate adsorption capacity of GO--Fe 2O 3 reached to 93.28mgg-1, in 50mgL-1 phosphate solution at pH 6.0 and temperature 298 K, and the phosphate adsorption efficiency is very stable between the pH range of 2.0–10.5 and temperature range of 293–333 K. The adsorption progress is rapid, and adsorption equilibrium was reached within 5 min. The phosphate adsorption behavior of GO--Fe 2O 3 fitted the Langmuir model, and the adsorption kinetic fitted the pseudo-second-order model. Ion exchange and electrostatic attraction are the main reactions in the adsorption process. Physical adsorption and chemical adsorption both are in the adsorption process. The phosphate adsorption progress is stable and rapid; thus, it is a good choice to deal with phosphate-polluted water by GO--Fe 2O 3.
KW - Adsorption
KW - Electrostatic attraction
KW - Graphene oxide
KW - Ion exchange
KW - Mechanism
KW - Water treatment
UR - http://www.scopus.com/inward/record.url?scp=85047879123&partnerID=8YFLogxK
U2 - 10.1007/s13369-018-3124-3
DO - 10.1007/s13369-018-3124-3
M3 - 文章
AN - SCOPUS:85047879123
SN - 2193-567X
VL - 43
SP - 3611
EP - 3620
JO - Arabian Journal for Science and Engineering
JF - Arabian Journal for Science and Engineering
IS - 7
ER -