Pore Formation Mechanism and Sorption Studies Using Activated Carbon from Gleditsia triacanthos

Lignocellulosic biomass (LB) is a good choice to be utilized as a substitute for activated carbon (AC) production. The main objective is to increase pore volume, porosity, and specific surface area (SSA) of activated Gleditsia triacanthos (AGT) and determine the relevant mechanism behind pore format...

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Bibliographic Details
Published in:Chemical engineering & technology 2021-05, Vol.44 (5), p.892-900
Main Authors: Mathangi, J. B., Kalavathy, M. Helen, Miranda, Lima Rose
Format: Article
Language:English
Subjects:
Activated carbon
Adsorption
Lignocellulose
Lignocellulosic biomass
Pore formation
Porosity
Sorption
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Summary:Lignocellulosic biomass (LB) is a good choice to be utilized as a substitute for activated carbon (AC) production. The main objective is to increase pore volume, porosity, and specific surface area (SSA) of activated Gleditsia triacanthos (AGT) and determine the relevant mechanism behind pore formation. Morphological, physical, and chemical characteristics were studied to evaluate the potential of AGT for Ni2+ removal. Ni2+ removal was carried out for different operating conditions such as contact time, pH, and initial Ni2+ concentration. Kinetics and equilibrium studies demonstrated that the mechanism for Ni2+ removal is chemical sorption. Gleditsia triacanthos pod‐based lignocellulosic biomass was used as a precursor to synthesize activated carbon. The mechanism behind pore formation in the carbon is studied in detail. A tailor‐made adsorbent was applied for the removal of Ni2+ from synthetic solution. One‐, two‐, and three‐parameter isotherms and kinetics were evaluated to understand the mechanism for the removal of Ni2+ ions.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.202000485