Journal
BIORESOURCE TECHNOLOGY
Volume 268, Issue -, Pages 149-157Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.07.125
Keywords
Tobacco petiole; Biochar; Hexavalent chromium; Adsorption
Funding
- National Natural Science Foundation of China, China [51604099]
- Scientific Research Start-up Funding [qd16118]
- Youth Science Foundation of Henan Normal University (China) [2016QK21, 2017PL11]
Ask authors/readers for more resources
Tobacco petiole biochar (TPBC) was prepared via pyrolysis and used for Cr(VI) removal. Cr(VI) removal efficiency was reduced by pyrolytic temperature (PyT) increase which mainly affected by functional groups rather than specific surface area. According to the optimal pseudo second-order kinetic, the initial adsorption rate was decreased with PyT increase from 355.91 mg.g(-1).min(-1) (PyT = 300 degrees C) to 3.44 mg.g(-1).min(-1) (PyT = 700 degrees C). The isotherm was optimally explained by Temkin model involved physical absorption with heat of 28.73 J/mol. Simulation result of adsorption-reduction-adsorption process showed the Cr(VI) removal was kinetic controlled by Cr(VI) and Cr(III) adsorptions. TPBC300 was the optimal TPBC for chromium removal from electroplating wastewater with efficiencies of: 66.7% (Cr(VI)) and 21.1% (Cr(tot)).
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