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Biochars as Potential Adsorbers of CH4, CO2 and H2S.
- Source :
- Sustainability (2071-1050); Jan2017, Vol. 9 Issue 1, p121, 10p
- Publication Year :
- 2017
-
Abstract
- Methane gas, as one of the major biogases, is a potential source of renewable energy for power production. Biochar can be readily used to purify biogas contaminants such as H<subscript>2</subscript>S and CO<subscript>2</subscript>. This study assessed the adsorption of CH<subscript>4</subscript>, H<subscript>2</subscript>S, and CO<subscript>2</subscript> onto four different types of biochars. The adsorption dynamics of biochars were investigated in a fixed-bed column, by determining the breakthrough curves and adsorption capacities of biochars. The physicochemical properties of biochars were considered to justify the adsorption performance. The results showed that CH<subscript>4</subscript> was not adsorbed well by the subjected biochars whereas CO<subscript>2</subscript> and H<subscript>2</subscript>S were successfully captured. The H<subscript>2</subscript>S and CO<subscript>2</subscript> breakthrough capacity were related to both the surface adsorption and chemical reaction. The adsorption capacity was in the following order: perilla > soybean stover > Korean oak > Japanese oak biochars. The simultaneous adsorption also leads to a competition of sorption sites. Biochars are a promising material for the biogas purification industry. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20711050
- Volume :
- 9
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Sustainability (2071-1050)
- Publication Type :
- Academic Journal
- Accession number :
- 121199603
- Full Text :
- https://doi.org/10.3390/su9010121