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Performance of Fe‐loaded chitosan carbonized rice husk beads (Fe‐CCRB) for continuous adsorption of metal ions from industrial effluents
Author(s) -
Sugashini Sivaraju,
Begum Kadhar Mohamed Meera Sheriffa
Publication year - 2014
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.11893
Subject(s) - adsorption , fourier transform infrared spectroscopy , husk , metal ions in aqueous solution , scanning electron microscope , nuclear chemistry , effluent , chemistry , chitosan , analytical chemistry (journal) , metal , carbonization , materials science , packed bed , chemical engineering , chromatography , metallurgy , environmental engineering , composite material , organic chemistry , botany , engineering , biology
The present investigation elucidates the removal of heavy metal ions using Fe‐loaded chitosan carbonized rice husk beads—Fe‐CCRB from synthetic and industrial effluent in a fixed bed column. The surface properties of Fe‐CCRB were characterized by Brauner Emmet and Teller (BET) analyzer, Scanning Electron Microscopy (SEM), Energy Dispersive X‐ray Analysis (EDAX) and Fourier transform infrared spectroscopy (FTIR). The effects of process parameters such as flow rate, bed height and initial Cr (VI) concentration were studied to determine the break through time. The experimental data fitted well with Thomas model and Yoon Nelson model. The break through curve of Adam Bohart model fitted with initial part of the breakthrough curve of experimental data. The BDST model described the adsorption capacity of the bed per unit bed volume N 0 increased with increase inC t / C 0. Regeneration studies were attempted to check the stability and activity of the adsorbent. The Fe‐CCRB adsorbent was used to treat the effluents and it was found to be more efficient in adsorption of anionic pollutant Cr (VI) ions when compared to cationic pollutant Ni (II) and Zn (II) with the maximum percentage removal of Cr(VI), Ni(II), and Zn(II) was 82.4, 63.1, and 77.2%, respectively. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 1125–1138, 2014