Modifi cation of Leonardite and Red Clay as Adsorbents for H2S Removal from Biogas

Main Article Content

อาทิตย์ อัศวสุขี
คันธพจน์ ศรีสถิตย์
ตะวัน สุขน้อย

Abstract

In this study, leonardite and red clay obtained from Mah Moh mine, which they were
utilized as low cost and eco-friendly adsorbents for hydrogen sulphide (H2S) removal
from biogas. The experiments were performed with a synthetic biogas: 72 % CH4, 28 %
CO2 and 4,400 ppm H2S. The adsorbents were packed in a column of 3.0 cm in diameter.
Geotech GA5000 was used to analyze synthetic biogas, at the continuous fl ow rate of
50 mL/min. The H2S adsorption capacity of leonardite and red clay were 0.2087 and
0.0134 mg/g, respectively. Modifi ed leonardite and red clay were upgraded by sodium
hydroxide (NaOH) (5 - 40 %) and coconut shell biochar (CSB) (15 - 70 %) can provide
higher H2S adsorption capacity than the non-modifi ed sample. From the economic feasibility
calculations, the modifi ed leonardite and red clay can be used as suitable adsorbent for
H2S removal from biogas for community use.

Article Details

How to Cite
[1]
อัศวสุขี อ., ศรีสถิตย์ ค., and สุขน้อย ต., “Modifi cation of Leonardite and Red Clay as Adsorbents for H2S Removal from Biogas”, RMUTI Journal, vol. 11, no. 1, pp. 146–158, Apr. 2018.
Section
บทความวิจัย (Research article)

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