Adsorption of Methylene blue and Rhodamine B by using biochar derived from Pongamia glabra seed cover | Zendy

Neonjyoti Bordoloi | Zendy; Manash Deep Dey | Zendy; Rupak Mukhopadhyay | Zendy; Rupam Kataki | Zendy

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Adsorption of Methylene blue and Rhodamine B by using biochar derived from Pongamia glabra seed cover

Author(s) -

Neonjyoti Bordoloi,

Manash Deep Dey,

Rupak Mukhopadhyay,

Rupam Kataki

Publication year - 2017

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2017.579

Subject(s) - freundlich equation , langmuir , adsorption , biochar , chemistry , rhodamine b , langmuir adsorption model , nuclear chemistry , pyrolysis , fourier transform infrared spectroscopy , aqueous solution , sorption , methylene blue , chemical engineering , organic chemistry , photocatalysis , engineering , catalysis

Biochar obtained through the pyrolysis of Pongamia glabra seed cover (PGSC) at 550 °C with a heating rate of 40 °C/min was characterized and its ability to adsorb the dyes Methylene blue (MB) and Rhodamine B (RB) from aqueous solutions was investigated. The effect of pH, temperature and initial concentration of the dyes on adsorption behavior were investigated. The equilibrium sorption data were analyzed by using Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich (D-R) isotherms. Equilibrium data were well fitted for D-R isotherm in case of MB and Langmuir isotherm in case of RB dyes. The kinetics of dye adsorption on PGSC biochar was well described by applying pseudo-second-order rate equations. The surface of adsorbent before and after the removal of dyes was characterized by using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) analysis. The study suggested that PGSC biochar could be used as a highly efficient adsorbent for the removal of synthetic dyes.

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