A Comparison of Dilute Sulfuric and Phosphoric Acid Pretreatments in Biofuel Production from Corncobs
Biofuels, like biobutanol, have been recognized for
being renewable and sustainable fuels which can be produced from
lignocellulosic biomass. To convert lignocellulosic biomass to
biofuel, pretreatment process is an important step to remove
hemicelluloses and lignin to improve enzymatic hydrolysis. Dilute
acid pretreatment has been successful developed for pretreatment of
corncobs and the optimum conditions of dilute sulfuric and
phosphoric acid pretreatment were obtained at 120 °C for 5 min with
15:1 liquid to solid ratio and 140 °C for 10 min with 10:1 liquid to
solid ratio, respectively. The result shows that both of acid
pretreatments gave the content of total sugar approximately 34–35
g/l. In case of inhibitor content (furfural), phosphoric acid
pretreatment gives higher than sulfuric acid pretreatment.
Characterizations of corncobs after pretreatment indicate that both of
acid pretreatments can improve enzymatic accessibility and the better
results present in corncobs pretreated with sulfuric acid in term of
surface area, crystallinity, and composition analysis.
[1] Sun, Y., and Cheng, J., (2002). Hydrolysis of lignocellulosic materials
for ethanol production: A review. Bioresource Technology. 83, 1-11.
[2] Zheng, Y., Pan, Z.L., and Zhang, R.H. (2009). Overview of biomass
pretreatment for cellulosic ethanol production. Agricultural and
Bioenergy, 33, 1-7.
[3] Tangmanasakul, K., (2011). Combined Acid Pretreatment and
Enzymatic Hydrolysis of Corn Cobs, M.S. Thesis, The Petroleum and
Petrochemical College, Chulalongkorn University, unpublished.
[4] Satimanont, S., (2012). Dilute Phosphoric Acid Pretreatment of
CornCob for Biofuels Production, M.S. Thesis, The Petroleum and
Petrochemical College, Chulalongkorn University, unpublished.
[5] Romero, I., Moya, M., SÓ╣ünchez, S., Ruiz, E., Castro, E., and Bravo, V.
(2007). Ethanolic fermentation of phosphoric acid hydrolysates from
olive tree pruning, Industrial Crops and Products. 25, 160-168.
[6] Kumar, R., Mago, G., Balan V., and Wymand, C.E. (2009). Physical and
chemical characterizations of corn stover and poplar solids resulting
from leading pretreatment technologies. Bioresource Technology. 100,
3948-3962.
[7] Ezeji, T., Qureshi, N., and Blaschek, H.P. (2007). Butanol Production
From Agricultural Residues: Impact of Degradation Products on
Clostridium beijerinckii Growth and Butanol Fermentation.
Biotechnology and Bioengineering, 97, 1460-1469.
[8] Redding, A.T., Wang, Z.Y., Keshwani, D.P., Cheng, J. (2011). High
temperature dilute acid pretreatment of coastal Bermuda grass for
enzymatic hydrolysis. Bioresource Technology, 102, 1415-1424.
[9] Yoshida, M., Liu, Y., Uchida, S., Kawarada, K., Ukagami, Y., Ivhinose,
H., Kaneko, S., Fukuda, K. (2008). Effect of cellulose crystallinity,
hemicelluloses, and lignin on the enzymatic hydrolysis of miscanthus
sinensis to monosaccharides. Bioscience, Biotechnology, and
Biochemistry, 72, 805-810.
[10] Kim, T.H., Kim, J.S., Sunwoo, C., and Lee, Y.Y. (2003). Pretreatment
of corn stover by aqueous ammonia. Bioresource Technology. 90, 39-
47.
[11] Gabhane, J.D., William Prince, S.P.M., Vaidya, A.N., Mahapatra, C.T.
(2011). Influence of heating source on the efficacy of lignocellulosic
pretreatment-A cellulosic ethanol perspective. Biomass and Bioenergy,
35, 96-102.
[1] Sun, Y., and Cheng, J., (2002). Hydrolysis of lignocellulosic materials
for ethanol production: A review. Bioresource Technology. 83, 1-11.
[2] Zheng, Y., Pan, Z.L., and Zhang, R.H. (2009). Overview of biomass
pretreatment for cellulosic ethanol production. Agricultural and
Bioenergy, 33, 1-7.
[3] Tangmanasakul, K., (2011). Combined Acid Pretreatment and
Enzymatic Hydrolysis of Corn Cobs, M.S. Thesis, The Petroleum and
Petrochemical College, Chulalongkorn University, unpublished.
[4] Satimanont, S., (2012). Dilute Phosphoric Acid Pretreatment of
CornCob for Biofuels Production, M.S. Thesis, The Petroleum and
Petrochemical College, Chulalongkorn University, unpublished.
[5] Romero, I., Moya, M., SÓ╣ünchez, S., Ruiz, E., Castro, E., and Bravo, V.
(2007). Ethanolic fermentation of phosphoric acid hydrolysates from
olive tree pruning, Industrial Crops and Products. 25, 160-168.
[6] Kumar, R., Mago, G., Balan V., and Wymand, C.E. (2009). Physical and
chemical characterizations of corn stover and poplar solids resulting
from leading pretreatment technologies. Bioresource Technology. 100,
3948-3962.
[7] Ezeji, T., Qureshi, N., and Blaschek, H.P. (2007). Butanol Production
From Agricultural Residues: Impact of Degradation Products on
Clostridium beijerinckii Growth and Butanol Fermentation.
Biotechnology and Bioengineering, 97, 1460-1469.
[8] Redding, A.T., Wang, Z.Y., Keshwani, D.P., Cheng, J. (2011). High
temperature dilute acid pretreatment of coastal Bermuda grass for
enzymatic hydrolysis. Bioresource Technology, 102, 1415-1424.
[9] Yoshida, M., Liu, Y., Uchida, S., Kawarada, K., Ukagami, Y., Ivhinose,
H., Kaneko, S., Fukuda, K. (2008). Effect of cellulose crystallinity,
hemicelluloses, and lignin on the enzymatic hydrolysis of miscanthus
sinensis to monosaccharides. Bioscience, Biotechnology, and
Biochemistry, 72, 805-810.
[10] Kim, T.H., Kim, J.S., Sunwoo, C., and Lee, Y.Y. (2003). Pretreatment
of corn stover by aqueous ammonia. Bioresource Technology. 90, 39-
47.
[11] Gabhane, J.D., William Prince, S.P.M., Vaidya, A.N., Mahapatra, C.T.
(2011). Influence of heating source on the efficacy of lignocellulosic
pretreatment-A cellulosic ethanol perspective. Biomass and Bioenergy,
35, 96-102.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:52697", author = "Jirakarn Nantapipat and Apanee Luengnaruemitchai and Sujitra Wongkasemjit", title = "A Comparison of Dilute Sulfuric and Phosphoric Acid Pretreatments in Biofuel Production from Corncobs", abstract = "Biofuels, like biobutanol, have been recognized for
being renewable and sustainable fuels which can be produced from
lignocellulosic biomass. To convert lignocellulosic biomass to
biofuel, pretreatment process is an important step to remove
hemicelluloses and lignin to improve enzymatic hydrolysis. Dilute
acid pretreatment has been successful developed for pretreatment of
corncobs and the optimum conditions of dilute sulfuric and
phosphoric acid pretreatment were obtained at 120 °C for 5 min with
15:1 liquid to solid ratio and 140 °C for 10 min with 10:1 liquid to
solid ratio, respectively. The result shows that both of acid
pretreatments gave the content of total sugar approximately 34–35
g/l. In case of inhibitor content (furfural), phosphoric acid
pretreatment gives higher than sulfuric acid pretreatment.
Characterizations of corncobs after pretreatment indicate that both of
acid pretreatments can improve enzymatic accessibility and the better
results present in corncobs pretreated with sulfuric acid in term of
surface area, crystallinity, and composition analysis.", keywords = "Corncobs, Pretreatment, Sulfuric acid, Phosphoric
acid.", volume = "7", number = "4", pages = "167-5", }