Effects of the liquid vapor oxygen transfer coefficient (kLα) on ethanol production from cassava residue and analysis of the fermentation kinetics. Issue 2 (7th February 2018)

• Record Type: Journal Article
• Authors: Li, Xingjiang; Deng, Yongdong; Wu, Xuefeng; Yang, Ying; Cao, Lili; Yao, Hongli; Mu, Dongdong; Wang, Hualin; Zheng, Zhi; Jiang, Shaotong
• Is Part Of: Energy science & engineering. Volume 6:Issue 2(2018)
• Page Start: 83
• Page End: 92
• Publication Date: 2018-02-07
• Subjects: Agitation speed -- cassava residue -- ethanol -- fermentation kinetics -- xylose; Energy industries -- Periodicals; Energy development -- Periodicals; Power resources -- Periodicals; 621.042
• DOI: 10.1002/ese3.186
• Languages: English
• ISSNs: 2050-0505

Abstract

Abstract: Cassava residue is the solid waste generated from the production of tapioca starch and has considerable reuse value. In this study, cassava residue was examined as a hydrolysate for ethanol production, and the effects of different liquid phase oxygen transfer coefficients ( k L α ) on the production of ethanol from cassava residue hydrolysates were studied. Based on analyses of dissolved oxygen and a set of optimal experimental schemes, dynamic models of cell growth and product synthesis were optimized, using MATLAB. When k L α was 85, fermentation was optimal; the ethanol titer reached 23.14 g L −1 at 72 h and cell growth reached 6.23 g L −1 at 96 h. Additionally, experiments were performed according to the dissolved oxygen curve obtained under these conditions. The resulting ethanol titer was 24.43 g L −1 (72 h) and the cell mass was 6.45 g L −1 (96 h). Abstract : This paper considered the liquid vapor oxygen transfer coefficient and dissolved oxygen to simulate and empirically estimate ethanol production, and the fermentation kinetics was performed.