Biochars as Potential Adsorbers of CH4, CO2 and H2S

Sethupathi, Sumathi and Ming, Zhang and Rajapaksha, Anushka Upamali and Sang, Ryong Lee and Mohamad Nor, Norhusna and Mohamed, Abdul Rahman and Al-Wabel, Mohammad and Sang, Soo Lee and Yong, Sik Ok (2017) Biochars as Potential Adsorbers of CH4, CO2 and H2S. Sustainability, 9 (1). pp. 1-10. ISSN 2071-1050

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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.

Item Type: Article
Subjects: T Technology > TP Chemical Technology > TP1-1185 Chemical technology
Divisions: Zoom Profil Pakar (Expert Profile) > Abdul Rahman Mohamed (Chemical Engineering)
Depositing User: Mr Noorazilan Noordin
Date Deposited: 17 Jan 2018 01:45
Last Modified: 17 Apr 2019 02:43

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