Feasibility of using biochar as buffer and mineral nutrients replacement for acetone-butanol-ethanol production from non-detoxified switchgrass hydrolysate.

Autor: Sun X; Biosystems and Agricultural Engineering, Oklahoma State University, Stillwater, OK, USA., Atiyeh HK; Biosystems and Agricultural Engineering, Oklahoma State University, Stillwater, OK, USA. Electronic address: hasan.atiyeh@okstate.edu., Adesanya Y; Biosystems and Agricultural Engineering, Oklahoma State University, Stillwater, OK, USA., Okonkwo C; Department of Animal Science, The Ohio State University, and Ohio State Agricultural Research and Development Center, Wooster, OH, USA., Zhang H; Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, USA., Huhnke RL; Biosystems and Agricultural Engineering, Oklahoma State University, Stillwater, OK, USA., Ezeji T; Department of Animal Science, The Ohio State University, and Ohio State Agricultural Research and Development Center, Wooster, OH, USA.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2020 Feb; Vol. 298, pp. 122569. Date of Electronic Publication: 2019 Dec 06.
DOI: 10.1016/j.biortech.2019.122569
Abstrakt: Biochar can be an inexpensive pH buffer and source of mineral and trace metal nutrients in acetone-butanol-ethanol (ABE) fermentation. This study evaluated the feasibility of replacing expensive 4-morpholineethanesulfonic acid (MES) P2 buffer and mineral nutrients with biochar made from switchgrass (SGBC), forage sorghum (FSBC), redcedar (RCBC) and poultry litter (PLBC) for ABE fermentation. Fermentations using Clostridium beijerinckii ATCC 51743 in glucose and non-detoxified switchgrass hydrolysate media were performed at 35 °C in 250 mL bottles for 72 h. Medium containing buffer and minerals without biochar was the control. Similar ABE production (about 18.0 g/L) in glucose media with SGBC, FSBC and RCBC and control was measured. However in non-detoxified switchgrass hydrolysate medium, SGBC, RCBC and PLBC produced more ABE (about 18.5 g/L) than the control (10.1 g/L). This demonstrates that biochar is an effective buffer and mineral supplement for ABE production from lignocellulosic biomass without costly detoxification process.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: