Reflowed Aqua Ammonia Explosion Pretreatment for Corn Stover

Abstract:

Abstract: Based on ammonia recycled percolation (ARP) and combined with the advantage of ammonia fiber explosion (AFEX), a set of reflowed aqua ammonia explosion pretreatment (RAAEP) equipment was developed. According to the previous orthogonal experiment experimental results, the optimal pretreatment conditions were at 90°C, 9 min retention time, water to dry corn stover loading of 0.8:1(w/w), and aqua ammonia flow rate is 1.5L/min. The cellulose content of the pretreated corn stover was 50.46 % and the glucan and xylan enzymatic digestibility was 86.45 % and 95.77% respectively. The reflowed aqua ammonia not only caused fiber swelling and an efficient delignification (up to 62.5%) of biomass, but also altered the cellulose crystalline structure. The SEM picture and FTIR spectra confirmed swelling and significant delignification effects of the RAAEP process. The X-ray crystallography data indicated that the rigid structure of corn stover was disrupted with more crystallization fiber being exposed after the pretreatment process, but the crystallinity increased due to the removal of amorphous materials (lignin and hemicelluloses).

• Periodical: Applied Mechanics and Materials (Volumes 148-149)
• Pages: 1184-1189
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.148-149.1184
• Online since: December 2011
• Authors: Bing Li, Chao Zhang, Feng Pang, Yong Kang
• Keywords: Corn Stover, Enzymatic Hydrolysis, Pretreatment, Reflowed Aqua Ammonia Explosion

References

[1] P. Sannigrahi, Y. q. Pu and Arthur Ragauskas : Current Opinion in Environmental Sustainability . Vol. 2( 2010), P. 383.

[2] M. Beccali, M. Cellura and M. Mistretta: Renewable and Sustainable Energy Reviews. Vol. 11 (2007), P. 282.

DOI: 10.1016/j.rser.2005.02.001

[3] TAO SANG and WEIXING ZHU : GCB Bioenergy. Vol. 3(2011), P. 79.

[4] L. da.C. Sousa, S.P. Chundawat et al: Current Opinion in Biotechnology. Vol. 20 (2009), P. 339.

[5] Ramos LP: Quim Nova. Vol. 26 (2003),P. 863.

[6] T. H. Kim, J.S. Kim, Changshin Sunwoo and Y.Y. Lee: Bioresour. Technol. Vol. 90 (2003),P. 39.

[7] F. Teymouri, L. L. Perez, H. Alizadeh and Bruce E. Dale : Bioresour. Technol . Vol. 96 (2005) ,P. (2014).

[8] Sluiter, A., Hames, B., Ruiz, R., Scarlata, C. et al: National Revewable Energy Laboratory of the USA (NREL) Laboratory Analytical Procedure (LAP). (2008).

[9] Segal, L., Creely, J.J., Martin Jr., A.E., Conrad, C.M.: Textile Res. J. Vol. 29 (1959), P. 786.

[10] L. Zhu , Jonathan P. O'Dwyer , Vincent S. Chang , Cesar B. G, Mark T. Holtzapple: Bioresource Technology . Vol. 99 (2008),P. 3817.

[11] R. Gupta and Y.Y. Lee: Biotechnol. Prog. Vol. 25(2009), P. 357.

[12] P. Saha, S. Manna, S. Roy Chowdhury, R. Sen, D. Roy and B. Adhikari: Bioresource Technology. Vol. 101 (2010) , P3182.

[13] S. Anuradha Jabasingh, C. Valli Nachiyar: Industrial Crops and Products xxx (2011) xxx– xxx.

[14] Ming-Fei Li, Yong-Ming Fan, Feng Xu , Run-Cang Sun and Xun-Li Zhang: Industrial Crops and Products. Vol 32(2010), P. 551.

[15] Jingzhi Zhang, Xingxing Ma, Jianliang Yu, Xu Zhang , Tianwei Tan : Bioresour. Technol. Vol. 102 (2011),P. 4585.