• Home
  • Search Results
  • Enhanced bioethanol production from yellow poplar by deacetylation and oxalic acid pretreatment without detoxification.

Enhanced bioethanol production from yellow poplar by deacetylation and oxalic acid pretreatment without detoxification.

Bioresource technology (2014-09-11)
Chandan Kundu, Hong-Joo Lee, Jae-Won Lee
ABSTRACT

In order to produce ethanol from yellow poplar, deacetylation was performed using sodium hydroxide (NaOH). Optimal deacetylation conditions were determined by a response surface methodology. The highest acetic acid concentration obtained was 7.06 g/L when deacetylation was performed at 60 °C for 80 min with 0.8% NaOH. Acetic acid was recovered by electrodialysis from the deacetylated hydrolysate. The oxalic acid pretreatment of deacetylated biomass was carried out and the hydrolysate directly used for ethanol production without detoxification. Ethanol yields ranged from 0.34 to 0.47 g/g and the highest ethanol yield was obtained when pretreatment was carried out at 150 °C with 50 mM oxalic acid. The highest ethanol concentration obtained from pretreated biomass was 27.21 g/L at 170 °C, using a 50 mM of oxalic acid for the simultaneous saccharification and fermentation (SSF). Overall, 20.31 g of ethanol was obtained by hydrolysate and SSF from 100 g of deacetylated yellow poplar.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, anhydrous, ≥99.5%
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, for molecular biology
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, meets USP testing specifications
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, ACS spectrophotometric grade, 95.0%
Sigma-Aldrich
Ethanol, anhydrous, denatured
Sigma-Aldrich
Acetic acid, glacial, ReagentPlus®, ≥99%
Sigma-Aldrich
Sodium hydroxide, reagent grade, ≥98%, pellets (anhydrous)
Sigma-Aldrich
Acetic acid, glacial, ACS reagent, ≥99.7%
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, ACS reagent, ≥99.5%
Sigma-Aldrich
Sodium hydroxide solution, 50% in H2O
Sigma-Aldrich
Sodium hydroxide, ACS reagent, ≥97.0%, pellets
Sigma-Aldrich
Sodium hydroxide, BioXtra, ≥98% (acidimetric), pellets (anhydrous)
Sigma-Aldrich
Sodium hydroxide solution, BioUltra, for molecular biology, 10 M in H2O
Sigma-Aldrich
Sodium hydroxide solution, 1.0 N, BioReagent, suitable for cell culture
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, HPLC/spectrophotometric grade
Sigma-Aldrich
Acetic acid, glacial, puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, 99.8-100.5%
Sigma-Aldrich
Furfural, 99%
Sigma-Aldrich
Oxalic acid, 98%
Sigma-Aldrich
Oxalic acid, puriss. p.a., anhydrous, ≥99.0% (RT)
Sigma-Aldrich
Acetic acid, glacial, ≥99.99% trace metals basis
Supelco
Sodium hydroxide concentrate, 0.1 M NaOH in water (0.1N), Eluent concentrate for IC
Sigma-Aldrich
5-(Hydroxymethyl)furfural, ≥99%, FG
Sigma-Aldrich
Sodium hydroxide, puriss., meets analytical specification of Ph. Eur., BP, NF, E524, 98-100.5%, pellets
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, for molecular biology
Sigma-Aldrich
Acetic acid, natural, ≥99.5%, FG
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, meets USP testing specifications
Sigma-Aldrich
Acetic acid solution, suitable for HPLC
Sigma-Aldrich
5-Hydroxymethyl-2-furaldehyde, 99%
Supelco
Sodium hydroxide solution, 49-51% in water, eluent for IC
Sigma-Aldrich
D-(+)-Xylose, ≥99%