Dilute sulfuric acid cycle spray flow-through pretreatment of corn stover for enhancement of sugar recovery |
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| Authors: | Lishi Yan Hongman Zhang Jingwen Chen Zengxiang Lin Qiang Jin Honghua Jia He Huang |
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| Institution: | 1. College of Life Science and Pharmacy, Nanjing University of Technology, Nanjing 210009, PR China;2. Department of Applied Chemistry, Nanjing University of Technology, Nanjing 210009, PR China;3. Jiangsu Provincial Innovation Center for Industrial Biotechnology, Nanjing 211816, PR China;1. Department of Food Science, 1180, W. Cassatt St., University of Arkansas, Fayetteville, AR 72704, USA;2. Department of Biological and Agricultural Engineering, 203, Engineering Hall, University of Arkansas, Fayetteville, AR 72701, USA;1. Centre of Innovative and Applied Bioprocessing, Mohali, Punjab 160 071, India;2. Institute of Pesticide Formulation Technology, Gurugram, Haryana 122 016, India;1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;2. Department of Life Science and Engineering, Jining University, Jining 273155, China;1. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China;2. Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China;1. INRA, UMR 1208, Ingénierie des Agropolymères et Technologies Emergentes (IATE), 2 Place Pierre Viala, Montpellier cedex 1 F-34060, France;2. INRA, UR0050, Laboratoire de Biotechnologie de l’Environnement, Avenue des Etangs, Narbonne F-11100, France;3. Université Mohammed VI Polytechnique, Lot 660 – Hay Moulay Rachid, 43150 Ben Guerir, Morocco |
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| Abstract: | A cycle spray flow-through reactor was designed and used to pretreat corn stover in dilute sulfuric acid medium. The dilute sulfuric acid cycle spray flow-through (DCF) process enhanced xylose sugar yields and cellulose digestibility while increasing the removal of lignin. Within the DCF system, the xylose sugar yields of 90–93% could be achieved for corn stover pretreated with 2% (w/v) dilute sulfuric acid at 95 °C during the optimal reaction time (90 min). The remaining solid residue exhibited enzymatic digestibility of 90–95% with cellulase loading of 60 FPU/g glucan that was due to the effective lignin removal (70–75%) in this process. Compared with flow-through and compress-hot water pretreatment process, the DCF method produces a higher sugar concentration and higher xylose monomer yield. The novel DCF process provides a feasible approach for lignocellulosic material pretreatment. |
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