title: Solar assisted alkali pretreatment of garden biomass: Effects on lignocellulose degradation, enzymatic hydrolysis, crystallinity and ultra-structural changes in lignocellulose.
abstract: A comprehensive study was carried out to assess the effectiveness of solar assisted alkali pretreatment (SAAP) on garden biomass (GB). The pretreatment efficiency was assessed based on lignocellulose degradation, conversion of cellulose into reducing sugars, changes in the ultra-structure and functional groups of lignocellulose and impact on the crystallinity of cellulose, etc. SAAP was found to be efficient for the removal of lignin and hemicellulose that facilitated enzymatic hydrolysis of cellulose. FTIR and XRD studies provided details on the effectiveness of SAAP on lignocellulosic moiety and crystallinity of cellulose. Scanning electron microscopic analysis showed ultra-structural disturbances in the microfibrils of GB as a result of pretreatment. The mass balance closer of 97.87% after pretreatment confirmed the reliability of SAAP pretreatment. Based on the results, it is concluded that SAAP is not only an efficient means of pretreatment but also economical as it involved no energy expenditure for heat generation during pretreatment.
authors: Solid and Hazardous Waste Management Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, Maharashtra, India.
authors: Jagdish
authors: J
authors: Gabhane
authors: Solid and Hazardous Waste Management Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, Maharashtra, India. Electronic address: spmp_william@neeri.res.in.
authors: S P M Prince
authors: SP
authors: William
authors: Solid and Hazardous Waste Management Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, Maharashtra, India.
authors: Atul N
authors: AN
authors: Vaidya
authors: Analytical Instrumentation Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, Maharashtra, India.
authors: Sera
authors: S
authors: Das
authors: Solid and Hazardous Waste Management Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, Maharashtra, India.
authors: Satish R
authors: SR
authors: Wate
mesh_terms: D000383:Agriculture; D000468:Alkalies / Q000737:chemistry*; D018533:Biomass; D002480:Cellulase; D002482:Cellulose / Q000737:chemistry; D052918:Environmental Restoration and Remediation; D006868:Hydrolysis; D007194:India; D008031:Lignin / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D011134:Polysaccharides / Q000737:chemistry; D012037:Refuse Disposal; D015203:Reproducibility of Results; D012993:Solar Energy; D017550:Spectroscopy, Fourier Transform Infrared; D013472:Sunlight; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D000468:Alkalies; D011134:Polysaccharides; C036909:lignocellulose; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin; D002480:Cellulase
keywords: Crystallinity; Enzymatic hydrolysis; Solar concentrator; Ultra structural change; Ultraviolet radiation