Removal of furan and phenolic compounds from simulated biomass hydrolysates by batch adsorption and continuous fixed-bed column adsorption methods

Lee, Sang Cheol; Park, Sunkyu

doi:10.1016/j.biortech.2016.06.007

Cited by 60 publications

(18 citation statements)

References 31 publications

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“…Similar results have been reported before [ 40 ], in which 38.7% of furfural and 57.5% of total phenolic compounds were reduced by AC and 45.8% of furans and 35.8% of the phenolics were eliminated by overliming. Previously, it has been suggested the AC can selectively remove furans and phenolic compounds other than carboxylic acids due to its strong hydrophobicity [ 41 ]. Sequential overliming and 5.0% AC removed the 90.7% of furans and 99.5% of aromatic monomers (Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of overliming and activated carbon detoxification on inhibitors removal and butanol fermentation of poplar prehydrolysates

Zhang

Xia

et al. 2018

Biotechnol Biofuels

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BackgroundBiomass prehydrolysates from dilute acid pretreatment contain a considerable amount of fermentable sugars for biofuels production. However, carbonyl degradation compounds present severe toxicity to fermentation microbes. Furans (such as furfural and hydroxymethylfurfural), aliphatic acids (such as acetic acid, formic acid and levulinic acid) and phenolic compounds (such as vanillin and syringaldehyde) have been suggested to be the main inhibitors in biomass prehydrolysates. However, no single compound has been determined as the dominant toxic inhibitor. The effects of various detoxification methods on inhibitors removal have not been fully understood.ResultsThe effects of overliming and activated carbon (AC) detoxification on the removal of inhibitors and butanol fermentation of the poplar prehydrolysates were investigated. Gas chromatography–mass spectrometry (GC/MS) was used to identify and quantify 46 carbonyl compounds as potential inhibitors. It was observed that overliming and AC treatment alone did not make the prehydrolysates fermentable with Clostridium saccharobutylicum. The sequential overliming and AC resulted in a remarkable fermentability and a high butanol yield at 0.22 g g−1 sugar. The inhibitor removal in the prehydrolysates treated by overliming and AC was also examined by GC/MS. Overliming removed 75.6% of furan derivatives and 68.1% of aromatic monomers. In comparison, AC (5.0% w/v) removed 77.9% of furan derivatives and 98.6% of aromatic monomers. In addition, overliming removed much more 2,5-furandicarboxyaldehyde, 5-ethylfuran-2-carbaldehyde and 2,5-hexanedione than AC did. On the contrary, AC could remove considerably more phenolic acids than overliming. In the sequential detoxification, both dialdehydes/diketones and phenolic acids were extensively removed. This could be the main reason why the sequential detoxification enabled a remarkable ABE fermentation for the prehydrolysates.ConclusionsThis study indicated that the effect of overliming and AC treatment on inhibitors removal was related to their chemical structures. Overliming removed more dialdehydes and diketones than AC treatment, while AC removed more phenolic acids than overliming. Sequential overliming and AC treatment were required to make the prehydrolysates fermentable with C. saccharobutylicum. The study also suggested different detoxification method was needed for ABE fermentation of the prehydrolysate as compared to ethanol fermentation.Electronic supplementary materialThe online version of this article (10.1186/s13068-018-1182-0) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Effect of overliming and activated carbon detoxification on inhibitors removal and butanol fermentation of poplar prehydrolysates

Zhang

Xia

et al. 2018

Biotechnol Biofuels

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“…However, some of these methods have a higher retention of fermentable sugars present in hydrolysates. One of the most commonly used methods for the removal of inhibitors in hydrolysates obtained from lignocellulosic biomass is the adsorption of activated carbon . Figure (A) shows the chemical principle of this method, which is based on the functional groups present on the surface of the charcoal (carbonyls and carboxyl), which can form ionic bonds with the phenolic and furfural compounds present in the hydrolysates.…”

Section: Technologies For Inhibitor Removal From Hydrolysatesmentioning

confidence: 99%

Challenges in lipid production from lignocellulosic biomass using Rhodosporidium sp.; A look at the role of lignocellulosic inhibitors

Osorio‐González

Hegde

Brar

et al. 2018

Biofuels Bioprod Bioref

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The use of lignocellulosic biomass biofuels is an attractive alternative because they do not put food safety at risk, they are a renewable source, and their use is limited. The use of microorganisms has now become more widespread to take advantage of the carbohydrates present in this raw material (cellulose and hemicellulose) and the products of its hydrolysis (glucose, xylose, arabinose, galactose, and mannose). The fatty acids obtained from oleaginous microorganisms are potential sources for the production of drop‐in biofuels. Rhodosporidium sp. is an oleaginous yeast that accumulates up to 70% of its biomass in the form of lipids and is highly adaptable to different types of substrates. This review discusses the different factors and challenges (genetic modification of strains, pretreatments, and inhibitor effects) in obtaining lipid from lignocellulosic biomass using Rhodosporidium sp. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…Furfural, 5-hydroxymethyl furfural, and vanillic acid, did not adsorb to carbon felt in MECs according to Zeng et al (2015) [16]. By contrast, furans and phenolics have been shown to adsorb to activated charcoal that follow Langmuir and Freundlich isotherm models (R 2 > 80%) [42]. Sorption without conversion would partially explain the lower Coulombic e ciencies in the complex feedstocks compared to acetate fed MECs.…”

Section: Substrate Conversion Under Closed Circuit Conditionsmentioning

confidence: 93%

“…One may be sorption to the anode. Lee and Park determined adsorbance isotherm curves for acetate using activated charcoal [42], so this mechanism might be possible at rst glance. However, the Coulombic e ciency for the acetate fed…”

Section: Substrate Conversion Under Open/closed Circuit Conditionsmentioning

confidence: 99%

Performance and Community Structure Dynamics of Microbial Electrolysis Cells Operated on Multiple Complex Feedstocks

Satinover

Rodríguez

Campa

et al. 2020

Preprint

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Background Microbial electrolysis is a promising technology for converting aqueous wastes into hydrogen. Substrate adaptability is an important feature, seldom documented in Microbial Electrolysis Cells (MECs). The correlation between substrate composition and community structure has not been well established. This study used a MEC capable of producing over 10 L/L-day of hydrogen from a switchgrass-derived bio-oil aqueous phase and investigated four additional substrates. The additional substrates included a red oak-derived bio-oil aqueous phase, a corn stover fermentation product, a mixture of phenol and acetate, and acetate alone. Results The MEC fed with the corn stover fermentation product resulted in the highest performance among the complex feedstocks, producing an average current density of 7.3 A/m2, although the acetate fed MEC outperformed complex substrates, producing 12 ± A/m2. 16S rRNA gene sequencing showed that community structure and community diversity were not predictive of performance, and replicate community structures diverged despite identical inoculum and enrichment procedure. The trends in each replicate, however, were indicative of the influence of the substrates. Geobacter was the most dominant genus across most of the samples tested, but its abundance did not correlate strongly to current density. High-performance liquid chromatography (HPLC) showed that acetate accumulated during open-circuit conditions when MECs were fed with complex feedstocks and was quickly degraded once closed-circuit conditions were applied. The largest net acetic acid removal rate occurred when MECs were fed with red oak bio-oil aqueous phase, consuming 2.93 ± 0.00 g/L-day. Principal component analysis found that MEC performance metrics such as current density, hydrogen productivity, and COD removal were closely correlated. Net acetic acid removal was also found to correlate with performance. However, no bacterial genus correlated to performance metrics, and the analysis suggested that less than 70% of the variance was accounted for by the two components. Conclusions This study demonstrates the robustness of microbial communities to adapt to a range of feedstocks and conditions without relying on specific species, delivering high hydrogen productivities, thus indicating functional adaptation vs. compositional requirement. MECs may,, play a central role in the 21st-century bioeconomy as factories producing a zero-emission fuel.

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Removal of furan and phenolic compounds from simulated biomass hydrolysates by batch adsorption and continuous fixed-bed column adsorption methods

Cited by 60 publications

References 31 publications

Effect of overliming and activated carbon detoxification on inhibitors removal and butanol fermentation of poplar prehydrolysates

Effect of overliming and activated carbon detoxification on inhibitors removal and butanol fermentation of poplar prehydrolysates

Challenges in lipid production from lignocellulosic biomass using Rhodosporidium sp.; A look at the role of lignocellulosic inhibitors

Performance and Community Structure Dynamics of Microbial Electrolysis Cells Operated on Multiple Complex Feedstocks

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