title: A green and efficient technology for the degradation of cellulosic materials: structure changes and enhanced enzymatic hydrolysis of natural cellulose pretreated by synergistic interaction of mechanical activation and metal salt.
abstract: A new technology for the pretreatment of natural cellulose was developed, which combined mechanical activation (MA) and metal salt treatments in a stirring ball mill. Different valent metal nitrates were used to investigate the changes in degree of polymerization (DP) and crystallinity index (CrI) of cellulose after MA+metal salt (MAMS) pretreatment, and Al(NO3)3 showed better pretreatment effect than NaNO3 and Zn(NO3)2. The destruction of morphological structure of cellulose was mainly resulted from intense ball milling, and the comparative studies on the changes of DP and crystal structure of MA and MA+Al(NO3)3 pretreated cellulose samples showed a synergistic interaction of MA and Al(NO3)3 treatments with more effective changes of structural characteristics of MA+Al(NO3)3 pretreated cellulose and substantial increase of reducing sugar yield in enzymatic hydrolysis of cellulose. In addition, the results indicated that the presence of Al(NO3)3 had significant enhancement for the enzymatic hydrolysis of cellulose.
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; Guangxi Research Institute of Chemical Industry, Nanning 530001, China.
authors.forename: Yanjuan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
authors.forename: Jianmei
authors.initials: J
authors.lastname: Su
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Lin
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China. Electronic address: huangzq@gxu.edu.cn.
authors.forename: Zuqiang
authors.initials: Z
authors.lastname: Huang
authors.affiliation: College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
authors.forename: Yinghua
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Guangxi Research Institute of Chemical Industry, Nanning 530001, China.
authors.forename: Guosong
authors.initials: G
authors.lastname: Sun
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
authors.forename: Mei
authors.initials: M
authors.lastname: Yang
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
authors.forename: Aimin
authors.initials: A
authors.lastname: Huang
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
authors.forename: Huayu
authors.initials: H
authors.lastname: Hu
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
authors.forename: Yuanqin
authors.initials: Y
authors.lastname: Zhu
mesh_terms: D017607:Aluminum Compounds / Q000494:pharmacology; D002480:Cellulase / Q000378:metabolism*; D002482:Cellulose / Q000737:chemistry* / Q000378:metabolism*; D003460:Crystallization; D055772:Green Chemistry Technology / Q000379:methods*; D006868:Hydrolysis / Q000187:drug effects; D008670:Metals / Q000494:pharmacology*; D009566:Nitrates / Q000494:pharmacology; D058105:Polymerization; D012492:Salts / Q000494:pharmacology*; D013314:Stress, Mechanical; D014961:X-Ray Diffraction
chemical_list: D017607:Aluminum Compounds; D008670:Metals; D009566:Nitrates; D012492:Salts; D002482:Cellulose; D002480:Cellulase; C050609:aluminum nitrate
keywords: Cellulose; Enzymatic hydrolysis; Mechanical activation; Metal salt; Pretreatment