Open AccessAdsorption of Congo red with hydrothermal treated shiitake mushroom
Author(s) -
Kai Yang,
Yanhui Li,
Heng Zheng,
Xinyu Luan,
Hong Li,
Yuqi Wang,
Qiuju Du,
Kunyan Sui,
Hongliang Li,
Yanzhi Xia
Publication year - 2019
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab5ff3
Subject(s) - congo red , adsorption , endothermic process , fourier transform infrared spectroscopy , freundlich equation , langmuir adsorption model , langmuir , hydrothermal circulation , nuclear chemistry , mushroom , chemistry , scanning electron microscope , materials science , chemical engineering , organic chemistry , composite material , food science , engineering
The shiitakemushroomwas treated by hydrothermalmethod to obtain a novel biosorbent. Scanning ElectronMicroscopy (SEM), Fourier Transform Infrared (FTIR) Spectroscopy andBrunauer– Emmett–Teller (BET)method have been used to characterize the physico-chemical properties of the novel biosorbent. Factors affecting the adsorption properties of Congo red onto biosorbent such as pH, dose, time and temperature were investigated respectively. The experimental datamore suitable for the langmuirmodel than the Freundlichmodel. Themaximumadsorption capacity of the biosorbent obtained by the Langmuirmodel at 293 Kwas 217.86mg g. The kinetic study illustrated that the adsorption fit the pseudo-first-ordermodel. Thermodynamic analysis indicated that the adsorption reactionwas a spontaneous endothermic reaction.
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