Pretreatment of Achnatherum splendens by Soaking in Aqueous Ammonia
Ren Jun
School of Environmental and Municipal Engineering, Institute of Environmental Ecology, Lanzhou Jiaotong University, Lanzhou 730070, P.R. China ; Engineering Centre for Cold and Arid Regions Water Resource Comprehensive Utilization, Ministry of Education, Lanzhou 730070, P.R. China
Tao Ling
School of Environmental and Municipal Engineering, Institute of Environmental Ecology, Lanzhou Jiaotong University, Lanzhou 730070, P.R. China ; Engineering Centre for Cold and Arid Regions Water Resource Comprehensive Utilization, Ministry of Education, Lanzhou 730070, P.R. China
Ni Tianri
School of Environmental and Municipal Engineering, Institute of Environmental Ecology, Lanzhou Jiaotong University, Lanzhou 730070, P.R. China
Hao Jianxiu
School of Environmental and Municipal Engineering, Institute of Environmental Ecology, Lanzhou Jiaotong University, Lanzhou 730070, P.R. China
Gao Yamei
School of Environmental and Municipal Engineering, Institute of Environmental Ecology, Lanzhou Jiaotong University, Lanzhou 730070, P.R. China
Corresponding Author(s) : Ren Jun
renjun@mail.lzjtu.cn
Asian Journal of Chemistry,
Vol. 23 No. 10 (2011): Vol 23 Issue 10
Soaking in aqueous ammonia was investigated as a pretreatment method for Achnatherum splendens. The method involves batch treatment of feedstock with aqueous ammonia (5-25 wt %) at 45-85 ºC for 12-72 h. It was found that ammonia concentration, reaction temperature and reaction time all had significant effects on delignification. These factors also had significant effects on the lignin, hemicellulose and cellulose contents of soaking in aqueous ammoniatreated solids. Optimum conditions were obtained as follows: 10 wt % of ammonia, temperature 55 ºC, 36 h of reaction time and 12:1 (based on wt) of liquid-to-solid ratio. Under these conditions, delignification reached to 26.58 % and the content of cellulose in pretreated solids increased to 64.20% while the content of hemicellulose decreased to 23.63 %.
Jun, R., Ling, T., Tianri, N., Jianxiu, H., & Yamei, G. (2011). Pretreatment of Achnatherum splendens by Soaking in Aqueous Ammonia. Asian Journal of Chemistry, 23(10), 4407–4410. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/10865
