Methyl Ketones from Municipal Solid Waste Blends by One‐Pot Ionic‐Liquid Pretreatment, Saccharification, and Fermentation. Issue 18 (23rd August 2019)

• Record Type: Journal Article
• Authors: Yan, Jipeng; Liang, Ling; He, Qian; Li, Chenlin; Xu, Feng; Sun, Jian; Goh, Ee‐Been; Konda, N. V. S. N. Murthy; Beller, Harry R.; Simmons, Blake A.; Pray, Todd R.; Thompson, Vicki S.; Singh, Seema; Sun, Ning
• Is Part Of: ChemSusChem. Volume 12:Issue 18(2019)
• Page Start: 4313
• Page End: 4322
• Publication Date: 2019-08-23
• Subjects: Escherichia coli -- ionic liquids -- methyl ketones -- municipal solid waste -- technoeconomic analysis; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201901084
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: The conversion of municipal solid waste (MSW) and lignocellulosic biomass blends to methyl ketones (MKs) was investigated by using bioderived ionic liquid (bionic liquid)‐based hydrolysates followed by fermentation with an engineered Escherichia coli strain. The hydrolysates were produced by a one‐pot process using six types of MSW–biomass blends, choline‐based bionic liquids, and commercial enzymes. Based on the sugar yields, one blend (corn stover/MSW=95:5, w / w ) and two bionic liquids {cholinium lysinate ([Ch][Lys]) and cholinium aspartate ([Ch]2 [Asp])} were selected for scale‐up studies. Maximum yields of 82.3 % glucose and 54.4 % xylose were obtained from the selected blend in the scale‐up studies (6 L), which was comparable with 83.6 % glucose and 52.8 % xylose obtained at a smaller scale (0.2 L). Comparable or higher yields of medium‐chain (C11 –C17 ) MKs were achieved by using the MSW–biomass blend‐derived hydrolysates, relative to the sugar controls (glucose and xylose) with similar sugar feeding concentrations. Up to 1145 mg L −1 of MKs was produced by using MSW–biomass‐derived hydrolysates, and the MK titer decreased to 300 mg L −1 when the bionic‐liquid concentration in the hydrolysate increased from 1 to 2 %, indicative of bionic‐liquid inhibition. Technoeconomic analysis was conducted to investigate the economic potential of using the selected MSW–biomass blend as a feedstock to produce MKs. Abstract : Waste not, want not : A highly efficient and sustainable one‐pot process was developed for the production of biofuels through conversion of municipal solid waste blends to methyl ketones by using a bioderived ionic liquid followed by fermentation with an engineered Escherichia coli strain.