Usa Onthong. Predictive and experimental adsorption of toxic gas contented in biogas using natural materials. (). King Mongkut's University of Technology North Bangkok. Central Library. : , 2016.
Predictive and experimental adsorption of toxic gas contented in biogas using natural materials
Abstract:
The adsorption process is an effective method for removing toxic gas from biogas. In
this work, natural materials (pomegranate bark, guava leaves and banana peel) were used as
an adsorbent owning to their condensed tannin groups which could adsorb toxic gas
contented in biogas. Firstly, the interaction between six condensed tannins structures:
Afzelechin, Epiafzelechin, Catechin, Epicatechin, Gallocatechin and epigallocatechin with 4
compounds of biogas (CH4, CO2, NH3 and H2S) were studied using the computational
chemistry method, especially the density functional theory, basis set B3LYP /6-31G (d,p).2
Among condensed tannin structures, afzelechin shows the highest adsorption energy with
H2S at all studied positions (-346.09 and -346.91 kcal/mol for the position 1 and 2,
respectively) whereas epiafzelechin structure process the smallest adsorption energy with
CH4 (-0.06 kcal/mol for the position 2) Then, the adsorption of H2S and CH4 by pomegranate
bark, guava leaves and banana peel was experimentally studied in a 50 cm column. The
compositions of biogas before and after the adsorption process were analyzed using a gas
chromatography. Guava leaves could be used as an effective adsorbent for the biogas
cleaning since they can adsorb up to 97.5% of H2S and only 2.2% of CH4.
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2016
Modified:
2019-10-15
Issued:
2019-10-15
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BibliograpyCitation :
In Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn and Chulalongkorn University Faculty of science. Pure and Applied Chemistry International Conference (PACCON 2016) (pp.263-268). Bangkok : Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn