Observation of Potential Contaminants in Processed Biomass Using Fourier Transform Infrared Spectroscopy

Zhuang, Jingshun; Li, Mi; Pu, Yunqiao; Ragauskas, Arthur J.; Yoo, Chang Geun

doi:10.3390/app10124345

Cited by 297 publications

(142 citation statements)

References 57 publications

Supporting

Mentioning

135

Contrasting

Unclassified

Order By: Relevance

“…The bands at 1373 and 1425 cm −1 are related to C–H deformation and CH 2 scissor vibration in cellulose and hemicellulose, respectively. The bands at 1160 and 896 cm −1 band corresponds to C–O–C stretching at the β-(1→4)-glycosidic linkages in cellulose and hemicellulose [ 40 ]. The decrease in the intensity of hemicellulose characteristic band at 1736 cm −1 after pretreatments confirmed the removal of hemicellulose.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Corn Stover Pretreatments with Lewis Acid Catalyzed Choline Chloride, Glycerol and Choline Chloride-Glycerol Deep Eutectic Solvent

Liang

Luo

2021

Polymers

View full text Add to dashboard Cite

Herein, corn stover (CS) was pretreated by less corrosive lewis acid FeCl3 acidified solutions of neat and aqueous deep eutectic solvent (DES), aqueous ChCl and glycerol at 120 °C for 4 h with single FeCl3 pretreatment as control. It was unexpected that acidified solutions of both ChCl and glycerol were found to be more efficient at removing lignin and xylan, leading to higher enzymatic digestibility of pretreated CS than acidified DES. Comparatively, acidified ChCl solution exhibited better pretreatment performance than acidified glycerol solution. In addition, 20 wt% water in DES dramatically reduced the capability of DES for delignification and xylan removal and subsequent enzymatic cellulose saccharification of pretreated CS. Correlation analysis showed that enzymatic saccharification of pretreated CS was highly correlated to delignification and cellulose crystallinity, but lowly correlated to xylan removal. Recyclability experiments of different acidified pretreatment solutions showed progressive decrease in the pretreatment performance with increasing recycling runs. After four cycles, the smallest decrease in enzymatic cellulose conversion (22.07%) was observed from acidified neat DES pretreatment, while the largest decrease (43.80%) was from acidified ChCl pretreatment. Those findings would provide useful information for biomass processing with ChCl, glycerol and ChCl-glycerol DES.

show abstract

Section: Resultsmentioning

confidence: 99%

Comparison of Corn Stover Pretreatments with Lewis Acid Catalyzed Choline Chloride, Glycerol and Choline Chloride-Glycerol Deep Eutectic Solvent

Liang

Luo

2021

Polymers

View full text Add to dashboard Cite

show abstract

“…These band shifts caused by OM–Ca interaction can affect the prediction of soil properties from FTIR spectra that are based on a set of single wavenumbers ( Ludwig et al, 2008). In addition to PGA–Ca, interactions between OM and anions ( i.e ., Cl − ) may also affect the absorption bands in FTIR ( Zhuang et al, 2020). However, OM–anion interactions need to be considered mainly for N containing OM.…”

Section: Discussionmentioning

confidence: 99%

“…1b), which result in absorption bands at WN 1380 to 1400 cm −1 ( Alvarez‐Puebla et al, 2005) called here OM cat band. Note that also chloride could absorb to nitrogen containing organic matter ( e.g ., amine), which is most effective for N–H and less for C=O adsorption bands ( Zhuang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

FTIR spectral band shifts explained by OM–cation interactions

Ellerbrock

Gerke

2021

J. Plant Nutr. Soil Sci.

View full text Add to dashboard Cite

Background: The organic matter (OM) in soils interacts with polyvalent cations such as Ca2+ through hydroxyl (OH), carboxylic acid, ester, keto, aldehyde (summarized as C=O), and carboxylate (COO−) functional groups. Such interactions affect the bonding strength of the double bond between the C and the O atom in the functional groups, which is assumed to shift the wavenumber (WN) region of O–H (hydroxyl), C=O, COO−, and OMcat (i.e., C=O interacting with cations plus O–H groups) absorption band maxima in the Fourier transform infrared (FTIR) spectra. Such band shifts limit the evaluation of spectral information on OM in soil samples. Aims: The objective of this study was to analyze the extent of band shifts and the changes in absorption band intensities for relations with cation concentrations, and to estimate effects of band shifts on OM properties such as potential wettability of OM evaluated from FTIR absorption band ratios. Methods: Polygalacturonic acid (PGA) solutions were mixed with a CaCl2 solution at different relations. The freeze‐dried mixtures were analyzed with FTIR spectroscopy in the mid‐infrared spectral range by using KBr‐technique. The FTIR spectra were interpreted with respect to O–H, C=O, COO−, and OMcat bands, the latter reflecting the formation of PGA‐Ca2+ complexes. Results: The FTIR spectra of the PGA–Ca mixtures compared to that of pure PGA indicate band shift effects by CaCl2 addition on both, intensity and WN value of the OMcat, C=O and COO− absorption band maxima. The COO−/C–O–C ratio increased with Ca2+ concentration while the C–H/C–O–C ratio decreased. Furthermore, the C=O and COO− absorption band maxima were shifted towards lower WN values, while the OMcat absorption band was shifted towards higher WN values. The shift of OMcat band maxima was two times higher than that of the C=O band maximum and increased with Ca2+ concentration. Conclusion: Spectral band shifts depend on polyvalent cation concentration and limit automated interpretations of FTIR spectra without prior soil‐specific spectral corrections.

show abstract

“…Higher absorption was also observed at 3367 cm −1 due to the moisture content in poplar biomass. At 1424 cm −1 , bands were observed due to symmetrical CH 2 bending vibration in cellulose, carboxyl vibration in xylan and glucuronic acid, and C–H in planar deformation with aromatic ring stress in lignin [ 19 ]. FTIR analysis of poplar tree used as the substrate for MFCs in this study is given in Figure 4 .…”

Section: Resultsmentioning

confidence: 99%

Investigation of Polymer Biofilm Formation on Titanium-Based Anode Surface in Microbial Fuel Cells with Poplar Substrate

Erensoy

Çek

2021

Polymers

View full text Add to dashboard Cite

Microbial fuel cells (MFCs) have attracted attention by directly converting the bioelectrochemical energy possessed by the organic materials that make up the biomass into electrical energy. In this study, the relationship between the biofilm formed on the titanium-based anode electrode surface, and the chemical composition of the substrate, the energy source of MFC, was investigated. For this, MFCs were made by using poplar wood shavings rich in organic material as the substrate, titanium-based material as the anode electrode, and natural soil as bacterial habitat. Three types of MFCs containing 1%, 10%, and 20% poplar wood shavings by weight were made and named P1-MFC, P2-MFC, and P3-MFC, respectively. According to electrochemical analysis, P3-MFC provided the highest open circuit voltage with 490 mV value, and the highest power density with 5.11 mW/m2 value compared to other MFCs. According to optical microscopy examinations, there were Bacillus and Coccus species of bacteria in the soil structure, and these bacteria also existed around the fiber of poplar wood shavings in MFCs. Scanning electron microscopy (SEM), energy-dispersive spectrum (EDS), and Fourier transform infrared spectroscopy (FTIR) analysis showed that MFCs formed biofilm in the titanium-based anode, and the chemical composition of this biofilm with poplar tree was similar. As a result, due to the catalysis reactions of bacteria, the titanium-based anode electrode surface was coated with polymer biofilm released from poplar wood shavings.

show abstract

Observation of Potential Contaminants in Processed Biomass Using Fourier Transform Infrared Spectroscopy

Cited by 297 publications

References 57 publications

Comparison of Corn Stover Pretreatments with Lewis Acid Catalyzed Choline Chloride, Glycerol and Choline Chloride-Glycerol Deep Eutectic Solvent

Comparison of Corn Stover Pretreatments with Lewis Acid Catalyzed Choline Chloride, Glycerol and Choline Chloride-Glycerol Deep Eutectic Solvent

FTIR spectral band shifts explained by OM–cation interactions

Investigation of Polymer Biofilm Formation on Titanium-Based Anode Surface in Microbial Fuel Cells with Poplar Substrate

Contact Info

Product

Resources

About