Separation and Characterization of New Cellulosic Fibres From the Juncus Acutus L Plant

Ghali, Amel El; Marzoug, Imed Ben; Baouab, Mohamed Hassen V.; Roudesli, Mohamed Sadok

doi:10.15376/biores.7.2.2002-2018

Cited by 36 publications

(16 citation statements)

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“…"Computational FTIR with PCA," BioResources 7(4), 5367-5380. 5371 Empty fruit bunch C=O stretching of hemicellulose (Ghali et al 2012(Ghali et al ) 2855(Ghali et al , 2890(Ghali et al , 2923 C-H stretching of lignocellulosic components (Ding et al 2012) 3392, 3412 (broad) Hydrogen bonded OH bond stretching vibration of -cellulose (Ghali et al 2012) The preprocessed peak table was subjected to PCA yielding scores (T) and loadings (P) to describe the underlying relationships between samples and variables. Figure 2 shows the scores plots of PC 2 against PC 1, where the samples are labeled according to biomass; the blue, red, and green markers denote untreated, alkali-and acidtreated samples, respectively.…”

Section: Resultsmentioning

confidence: 99%

Computer-Assisted Analysis of Fourier Transform Infrared (Ftir) Spectra for Characterization of Various Treated and Untreated Agriculture Biomass

Sim¹,

Mohamed²,

Lu³

et al. 2012

BioResources

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A computational approach was used to analyze the FTIR spectra of a wide range of treated and untreated lignocellulosic biomass (coconut husk, banana trunk, sago hampas, rice husk, and empty fruit bunch). The biomass was treated with strong sulphuric acid and NaOH, respectively. A total of 87 spectra were obtained in which the absorption bands were de-convoluted automatically, generating a peak table of 87 rows and 60 columns. Square roots were taken of the peak values, with further standardization prior to Principal Component Analysis (PCA) for data exploration. In a scores plot, the treated and untreated biomass were distinguishable along the two main axes, PC1 and PC2. Examining the absorption bands corresponding to lignocellulosic components indicated that the acid pretreatment had resulted in dissolution and degradation of hemicelluloses and lignin, confirmed typically by disappearance of bands. The alkali treatment however was not as rigorous as the acid treatment, as some characteristic bands of hemicelluloses and lignin were enhanced, suggesting condensation of the degraded polysaccharides. The computer-assisted analysis of the FTIR spectra allowed efficient and simultaneous comparisons of lignocellulosic compositions present in various treated and untreated biomass. This represents an improvement relative to the conventional methods, since a large dataset can be handled efficiently and individual peaks can be examined.

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Section: Resultsmentioning

confidence: 99%

Computer-Assisted Analysis of Fourier Transform Infrared (Ftir) Spectra for Characterization of Various Treated and Untreated Agriculture Biomass

Sim¹,

Mohamed²,

Lu³

et al. 2012

BioResources

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“…The alkali treated jute fibers were added to 10 ml/l hydrogen peroxide at room temperature and stirred for 45 min [16], washed with distilled water and dried in the oven at 50 C until it reached a constant weight.…”

Section: Fiber Treatmentsmentioning

confidence: 99%

“…Bleaching will remove noncellulosic substances (lignin) without significantly varying the extracted fibers. The effect of successive treatment with NaOH and H 2 O 2 with varying concentrations of both on Juncus acutus L plant cellulose fiber and jute fiber composite strength was presented by Ghali and Marzoug [16,17].…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of successive alkali treated completely biodegradable short jute fiber reinforced PLA composites

2015

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The natural fiber reinforced biodegradable polymer composites were prepared with short jute fiber as reinforcement in PLA (Poly lactic acid) matrix. The short jute fiber is successively treated with NaOH at various concentrations (5%, 10%, and 15%) and H 2 O 2 . The composites were prepared with untreated and treated short jute fibers at different weight proportions (up to 25%) in PLA and investigated for mechanical properties. The results showed that the composite with successive alkali treated jute fiber at 10% NaOH and H 2 O 2 with 20% fiber loading has shown 18% higher flexural strength than neat PLA and untreated jute/PLA composite. The flexural modulus of the composite at 25% fiber loading was 125% and 110% higher than that of composites with untreated fibers and neat PLA, respectively. The impact strength of composite with untreated fibers at higher fiber weight fraction was 23% high as compared to neat PLA and 26% high compared to composite with treated fibers. The water absorption was more for untreated jute/PLA composite at 25% fiber loading than all other composites. The composite with untreated fibers has high thermal degradation compared with treated fibers but lower than that of pure PLA matrix. The enzymatic environment has increased the rate of degradation of composites as compared to soil burial. Surface morphology of biodegraded surfaces of the composites were studied using SEM method. POLYM. COMPOS., 37:2160-2170, 2016

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“…The absorption peak at 1,619 cm −1 suggests the presence of oxygen-containing compounds. The broad peak at 1,059 cm −1 is due to C-OH stretching vibration of cellulose backbone [45][46][47]. The FTIR spectra of mistletoe leaves after the adsorption of either Pb(II) ( Fig.…”

Section: Characteristics Of Adsorbentmentioning

confidence: 99%

Mistletoe leaves as a biosorbent for removal of Pb(II) and Cd(II) from aqueous solution

Suc

Son

2014

Desalination and Water Treatment

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A B S T R A C TThe adsorption of Pb(II) and Cd(II) ions onto the biosorbent from leaves of Ramus Loranthi, Scurrula Parasitica L., family Loranthaceae, commonly known as mistletoe or Tam gui in Vietnam, (henceforth to be referred as mistletoe leaves) was studied. The results showed that adsorption equilibrium was established in 150 min of contact time. The maximum adsorption for both metals obtained was at pH 5.5. The time-dependent experimental data of Pb(II) and Cd(II) adsorption process well fitted the pseudo-second-order model. The Redlich-Peterson, Toth, and Langmuir models were appropriate to describe the adsorption process, indicating the chemisorption process onto mistletoe leaves. The maximum adsorbent capacity was increased with an increase in temperature. It was found to be 44.8, 47.85, 49.1, and 50.07 mg/g for Cd(II) and 59.76, 63.25, 66.3, and 68.53 mg/g for Pb(II) at 303, 308, 313, and 318 K, respectively. The positive value of ΔH indicated the endothermic adsorption process. The high adsorption capacity for Pb (II) and Cd(II) obtained in this study shown that mistletoe leaves are a potential biosorbent for removal of these metals from wastewater and contaminated water.

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Separation and Characterization of New Cellulosic Fibres From the Juncus Acutus L Plant

Cited by 36 publications

References 0 publications

Computer-Assisted Analysis of Fourier Transform Infrared (Ftir) Spectra for Characterization of Various Treated and Untreated Agriculture Biomass

Computer-Assisted Analysis of Fourier Transform Infrared (Ftir) Spectra for Characterization of Various Treated and Untreated Agriculture Biomass

Preparation and properties of successive alkali treated completely biodegradable short jute fiber reinforced PLA composites

Mistletoe leaves as a biosorbent for removal of Pb(II) and Cd(II) from aqueous solution

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