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Adsorption of methylene blue using untreated biosorbent prepared from Geranium plant waste: Isothermal, kinetic and thermodynamic study

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Title Adsorption of methylene blue using untreated biosorbent prepared from Geranium plant waste: Isothermal, kinetic and thermodynamic study
 
Creator Thakare, S. S.
Shinde, S. T.
Pawar, R. S.
Sonawane, K. G.
Kale, A. A.
 
Subject Biosorbent
Isotherm
Kinetic
Methylene blue
Thermodynamic
 
Description 571-580
The potential of untreated biosorbent prepared from Geranium plant waste for the adsorption of methylene blue from
aqueous solution has been investigated. The effects of various experimental parameters such as biosorbent dose, contact
time, concentration of dye, pH and temperature have been studied. The maximum adsorption is found at the time of 120 min
and pH 7. Sorption increases with increasing temperature. Langmuir, Freundlich, Temkin and Jovanovic adsorption
isotherm have been studied. R2 value suggested better fitment of Freundlich adsorption isotherm. Adsorption of MB
followed pseudo second order kinetics with R2 value 0.9932. The calculated values of ΔH°, ΔS° and ΔG° are found to be
20.75 kJ/mol, 0.078 kJ/mol/K and -0.04682 kJ/mol, respectively. Adsorption processed with physical interaction, it is
spontaneous and endothermic in nature. Application to real wastewater, regeneration of biosorbent, cost analysis and
disposal of biosorbent have also been discussed. It is found that the prepared GPW biosorbent is stable and may be utilized
repeatedly without losing its affinity up to five cycles. GPW is tested against commercial activated carbon (CAC) and it
showed adsorption efficiency of 88% compared to 93% of CAC.
 
Date 2024-07-03T09:02:36Z
2024-07-03T09:02:36Z
2024-07
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/64160
https://doi.org/10.56042/ijct.v31i4. 5624
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.31(4) [July 2024]