4.6 Article

Biochars as Potential Adsorbers of CH4, CO2 and H2S

期刊

SUSTAINABILITY
卷 9, 期 1, 页码 -

出版社

MDPI AG
DOI: 10.3390/su9010121

关键词

adsorption; biochar; carbon dioxide; hydrogen sulphide

资金

  1. Kangwon National University [520160387]
  2. Korea Ministry of Environment, as a Geo-Advanced Innovative Action Project [G112-00056-0004-0]
  3. Korea Basic Science Institute of Kangwon National University, Korea
  4. Environmental Research Institute of Kangwon National University, Korea
  5. Central Laboratory of Kangwon National University, Korea
  6. Universiti Sains Malaysia [1216135615]
  7. National Research Foundation of Korea [22A20153713433] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

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 H2S and CO2. This study assessed the adsorption of CH4, H2S, and CO2 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 CH4 was not adsorbed well by the subjected biochars whereas CO2 and H2S were successfully captured. The H2S and CO2 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.

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