Journal
BIORESOURCE TECHNOLOGY
Volume 190, Issue -, Pages 550-557Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.01.103
Keywords
Bio-adsorbent; Corn stalk; Magnetic material; Cr(VI); Adsorption
Funding
- National Natural Science Foundation of China [51178252]
- Shandong Outstanding Young and Middle-aged Scientists Research Award Fund [BS2011HZ007]
- Shanghai Tongji Gao Tingyao Environmental Science & Technology Development Foundation (STGEF)
- Ministry of Education
- Graduate Innovation Foundation of Shandong University [yzc11047]
Ask authors/readers for more resources
Easily separable amine-functionalized magnetic corn stalk composites (AF-MCS) were employed for effective adsorption and reduction of toxic hexavalent chromium [Cr(VI)] to nontoxic Cr(III). The saturated magnetization of AF-MCS reached 6.2 emu/g, and as a result, it could be separated from aqueous solution by a magnetic process for its superparamagnetism. The studies of various factors influencing the sorption behavior indicated that the optimum AF-MCS dosage for Cr(VI) adsorption was 1 g/L, and the maximum adsorption capacity was observed at pH 3.0. The chromium adsorption perfectly fitted the Langmuir isotherm model and pseudo second order kinetic model. Furthermore, characterization of AF-MCS was investigated by means of XRD, SEM, TEM, FT-IR, BET, VSM and XPS analysis to discuss the uptake mechanism. Basically, these results demonstrated that AF-MCS prepared in this work has shown its merit in effective removal of Cr(VI) and rapid separation from effluents simultaneously. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available