Using electro-coagulation treatment to remove phenolic compounds and furan derivatives in hydrolysates resulting from pilot-scale supercritical water hydrolysis of Mongolian oak

Hanseob Jeong, Jaejung Lee, Young Min Ju and Soo Min Lee

Renewable Energy, 2019, vol. 138, issue C, 971-979

Abstract: In this study, an electro-coagulation treatment is performed to remove phenolic compounds, 5-hydroxymethylfurfural (5-HMF), and furfural from hydrolysates obtained by pilot-scale supercritical water hydrolysis (SCWH) of lignocellulosic biomass. The treatment used aluminum electrodes under various conditions (initial pH: 2.5–11, voltage: 0–10 V, and electrolyte (NaCl) concentration: 0–1.6% (w/v)). Changes in the treatment parameters resulted in more than 40% of phenolic compounds and most of the 5-HMF and furfural being removed from the hydrolysates at the optimal condition (pH 5/10 V/0.8% NaCl/180 min) while the initial sugar (glucose and xylose) concentrations were maintained. Therefore, the electro-coagulation treatment may provide a more effective purification process for sugar production compared to the conventional activated charcoal treatment process, which causes sugar loss (>25%).

Keywords: Electrochemical treatment; Purification process; Hydrolysates; Sugar production; Lignocellulosic biomass; Inhibitors (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148119301314
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:138:y:2019:i:c:p:971-979

DOI: 10.1016/j.renene.2019.01.115

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().