Application of Anaerobic Digestion Model No. 1 for modeling anaerobic digestion of vegetable crop residues: Fractionation of crystalline cellulose. (20th February 2021)

• Record Type: Journal Article
• Authors: Li, Pengfei; Pei, Zhanjiang; Liu, Di; Shi, Fengmei; Wang, Su; Li, Wenzhe; Sun, Yong; Liu, Jie; Gao, Yabing; Yu, Qiuyue
• Is Part Of: Journal of cleaner production. Volume 285(2021)
• Publication Date: 2021-02-20
• Subjects: Anaerobic digestion -- Anaerobic digestion model No.1 (ADM1) -- Vegetable crop residues -- Crystalline cellulose; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2020.124865
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract : Abstract Crystalline cellulose is fully resistant during anaerobic digestion (AD), which brings uncertainty to the use of mathematical models to simulate the dynamic AD process of lignocellulosic waste. In present study, a modified mathematical model, with crystalline cellulose as the primary consideration, was established based on Anaerobic Digestion Model No.1 to simulate the anaerobic bioconversion of vegetable crop residues (VCR) under mesophilic condition. In this model, VCR was divided into inert fraction (contained lignin and crystalline cellulose), as well as biodegradation parts of slowly hydrolysis fraction (SHF, contained hemicellulose and amorphous cellulose), and readily hydrolysis fraction (RHF, contained other organic components in the VCR). Data from a series of batch experiments have been used for the calibration and verification of this model. As a result, the calibrated model was found to match reasonably well the methane production data of three different VCRs, which implies that it was feasible to fractioned VCR into three fractions (SHF, RHF and inert part), and the operation that classified crystalline cellulose into the inert part, while regarded amorphous cellulose as SHF was appropriate. In order to be suitable for simulating the AD process of more other types of lignocellulosic waste, the model needs further modification and inspection. Graphical abstract: Image 1 Highlights: A novel feedstock characterization method was proposed to modify ADM1. Methane production of three vegetable crop residues were simulated by ADM1. The interaction of several sensitive parameters was evaluated.