Biochars as Potential Adsorbers of CH 4, CO 2 and H 2 S

Sumathi Sethupathi, Ming Zhang, Anushka Upamali Rajapaksha, Sang Ryong Lee, Norhusna Mohamad Nor, Abdul Rahman Mohamed, Mohammad Al-Wabel, Sang Soo Lee and Yong Sik Ok
Additional contact information
Sumathi Sethupathi: Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, 31900 Kampar, Perak, Malaysia
Ming Zhang: Department of Environmental Engineering, China Jiliang University, Hangzhou 310018, China
Anushka Upamali Rajapaksha: Korea Biochar Research Center & School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea
Sang Ryong Lee: National Institute of Animal Science, RDA, Wanju55365, Korea
Norhusna Mohamad Nor: School of Chemical Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
Abdul Rahman Mohamed: School of Chemical Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
Mohammad Al-Wabel: Soil Science Department, College of Food & Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
Sang Soo Lee: Korea Biochar Research Center & School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea
Yong Sik Ok: Korea Biochar Research Center & School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea

Sustainability, 2017, vol. 9, issue 1, 1-10

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 2 S and CO 2 . This study assessed the adsorption of CH 4 , H 2 S, and CO 2 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 4 was not adsorbed well by the subjected biochars whereas CO 2 and H 2 S were successfully captured. The H 2 S and CO 2 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.

Keywords: adsorption; biochar; carbon dioxide; hydrogen sulphide (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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