A low-cost activated carbon (AC) was produced from the broom sorghum stalk using KOH as the chemical activating agent, and then the surface of AC was functionalized with diethanolamine to enhance CO2/CH4 selectivity. Characteristics of pristine and DEA-functionalized ACs were determined through different analyses such as Boehm’s method, BET, FT-IR, SEM, and TGA. The adsorption behavior of pure carbon dioxide and pure methane on these adsorbents was investigated in a temperature range of 288-308 K and pressure range of 0-25 bar using an apparatus based on a volumetric method. Results indicated that amine functionalization significantly improved the selectivity of CO2/CH4. The enhancement of CO2 ideal adsorption selectivity over CH4 from 1.51 for the pristine AC to 5.75 for the AC-DEA was attributed to adsorbate-adsorbent chemical interaction. The present DEA-functionalized AC adsorbent can be a good candidate for applications in natural gas and landfill gas purifications.

Activated Carbon Broom Sorghum Carbon Dioxide Methane Functionalization Diethanolamine

Xu X, Zhao X, Sun L, Liu X, J. Nat. Gas Chem., 17, 391 (2008)
Mofarahi M, Gholipour F, Microporous Mesoporous Mater., 200, 1 (2014)
Syed-Hassan SSA, Zaini MSM, Korean J. Chem. Eng., 33(8), 2502 (2016)
Li J, Yang J, Li L, Li J, J. Energy Chem., 23, 453 (2014)
Rad MD, Fatemi S, Mirfendereski SM, Chem. Eng. Res. Des., 90(10), 1687 (2012)
Li ZJ, Xiao G, Yang QY, Xiao YL, Zhong CL, Chem. Eng. Sci., 120, 59 (2014)
Bai BC, Cho S, Yu HR, Yi KB, Kim KD, Lee YS, J. Ind. Eng. Chem., 19(3), 776 (2013)
Yi HH, Li FR, Ning P, Tang XL, Peng JH, Li YD, Deng H, Chem. Eng. J., 215, 635 (2013)
Delgado JA, Uguina MA, Sotelo JL, Ruiz B, Rosario M, J. Nat. Gas Chem., 16, 235 (2007)
Li P, Tezel FH, Microporous Mesoporous Mater., 98, 94 (2007)
Houshmand A, Shafeeyan MS, Arami-Niya A, Daud WMAW, J. Taiwan Ins. Chem. Eng., 44, 774 (2013)
Pevida C, Plaza MG, Arias B, Fermoso J, Rubiera F, Pis JJ, Appl. Surf. Sci., 254(22), 7165 (2008)
Xu X, Zhao X, Sun L, Liu X, J. Nat. Gas Chem., 18, 167 (2009)
Shafeeyan MS, Daud WMAW, Shamiri A, Aghamohammadi N, Chem. Eng. Res. Des., 104, 42 (2015)
Aroua MK, Daud WMAW, Yin CY, Adinata D, Sep. Purif. Technol., 62(3), 609 (2008)
Li Y, Yi H, Tang X, Li F, Yuan Q, Biochem. Eng. J., 229, 50 (2013)
Krishna R, Microporous Mesoporous Mater., 156, 217 (2012)
Shafeeyan MS, Daud WMAW, Shamirit A, Aghamohammadi N, Energy Fuels, 29(10), 6565 (2015)
Rashidi AM, Kazemi D, Izadi N, Pourkhalil M, Jorsaraei A, Ganji E, Lotfi R, Korean J. Chem. Eng., 33(2), 616 (2016)
Phalakornkule C, Foungchuen J, Pitakchon T, J. Sustainable Energy Environ., 3, 153 (2012)
Liu WJ, Zeng FX, Jiang H, Zhang XS, Bioresour. Technol., 102(17), 8247 (2011)
El-Hendawy ANA, Alexander AJ, Andrews RJ, Forrest G, J. Anal. Appl. Pyrolysis, 82, 272 (2008)
Shafeeyan MS, Daud WMAW, Houshmand A, Arami-Niya A, Appl. Surf. Sci., 257(9), 3936 (2011)
Jang DI, Park SJ, Bull. Korean Chem. Soc., 32, 3377 (2011)
Plaza M, Pevida C, Arias B, Fermoso J, Arenillas A, Rubiera F, Pis J, J. Therm. Anal. Calorim., 92, 601 (2008)
Shafeeyan MS, Houshmand A, A. Arami-Niya A, Razaghizadeh H, Daud WMAW, Bull. Korean Chem. Soc., 36, 533 (2015)
Meng L, Cho KS, Park SJ, Carbon Lett., 10, 221 (2009)
Hao S, Xiao Q, Yang H, Zhong Y, Pepe F, Zhu W, Microporous Mesoporous Mater., 132, 552 (2010)
Sayari A, Belmabkhout Y, Serna-Guerrero R, Biochem. Eng. J., 171, 760 (2011)
Houshmand A, Daud WMAW, Lee MG, Shafeeyan MS, Water Air Soil Pollut., 223, 827 (2012)
Lee CS, Ong YL, Aroua MK, Daud WMAW, Chem. Eng. J., 219, 558 (2013)
Kangwanwatana W, Saiwan C, Tontiwachwuthikul P, Chem. Eng. Trans., 35, 403 (2013)
Banisheykholeslami F, Ghoreyshi AA, Mohammadi M, Pirzadeh K, CLEAN-Soil, Air, Water, 43, 1084 (2015)
Feng X, Dementev N, Feng W, Vidic R, Borguet E, Carbon, 44, 1203 (2006)
Khalili S, Ghoreyshi AA, Jahanshahi M, Pirzadeh K, CLEAN-Soil, Air, Water, 41, 939 (2013)
Keramati M, Ghoreyshi AA, Physica E, 57, 161 (2014)
Delavar M, Ghoreyshi AA, Jahanshahi M, Khalili S, Nabian N, RSC Adv., 2, 4490 (2012)
Khoshhal S, Ghoreyshi AA, Jahanshahi M, Mohammadi M, RSC Adv., 5, 24758 (2015)
Foo KY, Hameed BH, Chem. Eng. J., 156(1), 2 (2010)
Reed BE, Matsumoto MR, Sep. Sci. Technol., 28, 2179 (1993)
Saha D, Bao Z, Jia F, Deng S, Environ. Sci. Technol., 44, 1820 (2010)
Serna-Guerrero R, Sayari A, Chem. Eng. J., 161(1-2), 182 (2010)
Himeno S, Tomita T, Suzuki K, Yoshida S, Microporous Mesoporous Mater., 98, 62 (2007)
Puziy A, Poddubnaya O, Kochkin YN, Vlasenko N, Tsyba M, Carbon, 48, 706 (2010)
Perez-Mendoza M, Schumacher C, Suarez-Garcia F, Almazan-Almazan M, Domingo-Garcia M, Lopez-Garzon F, Seaton N, Carbon, 44, 638 (2006)
Figueiredo J, Pereira M, Freitas M, Orfao J, Carbon, 37, 1379 (1999)
Shafeeyan MS, Daud WMAW, Houshmand A, Shamiri A, J. Anal. Appl. Pyrolysis, 89, 143 (2010)
Aviles F, Cauich-Rodriguez J, Moo-Tah L, May-Pat A, Vargas-Coronado R, Carbon, 47, 2970 (2009)
Rozlivkova Z, Trchova M, Exnerova M, Stejskal J, Synth. Met., 161, 1122 (2011)
Wang X, Guo Q, Zhao J, Chen L, Int. J. Greenhouse Gas Control, 37, 90 (2015)
Wang X, Guo QJ, Kong TT, Chem. Eng. J., 273, 472 (2015)
Wang X, Chen LL, Guo QJ, Chem. Eng. J., 260, 573 (2015)
Vukovic GD, Marinkovic AD, Colic M, Ristic MD, Aleksic R, Peric-Grujic AA, Uskokovic PS, Chem. Eng. J., 157(1), 238 (2010)
Heymans N, Alban B, Moreau S, De Weireld G, Chem. Eng. Sci., 66(17), 3850 (2011)
Plaza MG, Pevida C, Arenillas A, Rubiera F, Pis JJ, Fuel, 86(14), 2204 (2007)
Xu X, Zhao X, Sun L, Liu X, Chem. Ind. Eng. Prog., 12, 2116 (2009)