title: Pilot-scale production of fuel ethanol from concentrated food waste hydrolysates using Saccharomyces cerevisiae H058.
abstract: The aim of this study was to develop a bioprocess to produce ethanol from food waste at laboratory, semipilot and pilot scales. Laboratory tests demonstrated that ethanol fermentation with reducing sugar concentration of 200 g/L, inoculum size of 2 % (Initial cell number was 2 × 10⁶ CFU/mL) and addition of YEP (3 g/L of yeast extract and 5 g/L of peptone) was the best choice. The maximum ethanol concentration in laboratory scale (93.86 ± 1.15 g/L) was in satisfactory with semipilot scale (93.79 ± 1.11 g/L), but lower than that (96.46 ± 1.12 g/L) of pilot-scale. Similar ethanol yield and volumetric ethanol productivity of 0.47 ± 0.02 g/g, 1.56 ± 0.03 g/L/h and 0.47 ± 0.03 g/g, 1.56 ± 0.03 g/L/h after 60 h of fermentation in laboratory and semipilot fermentors, respectively, however, both were lower than that (0.48 ± 0.02 g/g, 1.79 ± 0.03 g/L/h) of pilot reactor. In addition, simple models were developed to predict the fermentation kinetics during the scale-up process and they were successfully applied to simulate experimental results.
authors.affiliation: School of Life Science, Huainan Normal University, Huainan, Anhui 232001, People's Republic of China. yhj_ysb@sohu.com
authors.forename: Shoubao
authors.initials: S
authors.lastname: Yan
authors.forename: Xiangsong
authors.initials: X
authors.lastname: Chen
authors.forename: Jingyong
authors.initials: J
authors.lastname: Wu
authors.forename: Pingchao
authors.initials: P
authors.lastname: Wang
mesh_terms: D050260:Carbohydrate Metabolism; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D005502:Food; D006868:Hydrolysis; D009584:Nitrogen / Q000378:metabolism; D010865:Pilot Projects; D012441:Saccharomyces cerevisiae / Q000378:metabolism*
chemical_list: D000431:Ethanol; D009584:Nitrogen