Characterization of Fibers from Pineapple's Crown, Rice Husks and Cotton Textile Residues

Prado, Karen de Souza do; Spinace, Marcia Aparecida da Silva

doi:10.1590/1516-1439.311514

Cited by 23 publications

(10 citation statements)

References 39 publications

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“…Also, elongated acicular structures are observed, which resemble "hairs", typical of the fibrous structure of certain cereals. Other authors [20,30,31] also observed this morphology. In Fig.…”

Section: Characterization Of Raw Materialssupporting

confidence: 59%

Ceramic matrices for immobilization of heavy metals adsorbed on rice husk

et al. 2020

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Numerous studies have been conducted about the removal of heavy metal ions from aqueous solutions using lignocellulosic materials, which are capable of adsorbing various contaminants present even at low concentrations. Rice husk constitutes biomass waste that has found multiple applications in different fields, such as the removal of heavy metals by adsorption. After this process, a biomass-contaminant waste is generated, which currently does not have viable and low-cost alternatives for its final disposal. Thus, the objective of this work is to evaluate the possibility of incorporating rice husk contaminated with Cu-Ni-Cd and Pb-Zn into ceramic matrices, to immobilize these hazardous metals. Ceramic pieces from mixtures of commercial clay and rice husk with adsorbed metal, added by 10% in volume were obtained. The raw materials were characterized by different techniques, such as SEM-EDS, XRD, DTA-TGA, particle size distribution, ecotoxicity, etc., while in ceramic products were analysed porosity, permanent volumetric variation, weight loss of ignition, ecotoxicity, among others. From the overall results, it is possible to conclude that the obtained ceramic pieces have immobilized within their structure, the heavy metals present on rice husk. The bricks have excellent physical and mechanical properties that make possible their use in civil construction.

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Section: Characterization Of Raw Materialssupporting

confidence: 59%

Ceramic matrices for immobilization of heavy metals adsorbed on rice husk

et al. 2020

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“…The hemicellulose content of cotton linters (which is negligible) was also used as the hemicellulose content of the jeans cotton, since it was expected that the presence of dye and other additives in the jeans cotton would give misleading results. This is a reasonable assumption as textile-grade cotton contains negligible hemicellulose (Prado and Spinacé 2015).…”

Section: Hemicellulose Contentmentioning

confidence: 99%

Using fibre property measurements to predict the tensile index of microfibrillated cellulose nanopaper

Taylor

Phipps²,

Blackburn

et al. 2020

Cellulose

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A wide variety of wood and non-wood cellulosic fibre sources were used as a feed to produce microfibrillated cellulose (MFC) using a grinding process. Nanopaper was formed using this product, and the tensile index was measured. The hemicellulose content of the feed fibres was measured, and was found to correlate with the production of finer microfibrils and a higher MFC tensile strength. The correlation with tensile strength was improved by the inclusion of a measurement of the MFC particle lengths as measured by a fibre image analyser, with the resulting relation fitting a modified Page Equation. It was hypothesised that the frequency of flaws in the feed fibre cross-section influences the length of the MFC particles produced, and so the zero-span tensile index of the fibres was measured as a proxy for this since it forces cross-sectional fibre breakage. The fibre zerospan tensile index was found to correlate with MFC particle length and so was used in its place in the equation. The resultant equation can predict MFC tensile strength from zero-span tensile index and hemicellulose content measurements of cellulosic fibres and can aid in optimising feedstock selection for mechanical MFC production processes.

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“…Weight loss temperature ranged at about 250-420°C, indicating the degradation of cellulose. The cellulose degradation temperature of other lignocellulosic fibres like sugarcane was 350°C (Hoi & Martincigh, 2013), amazon piassava (361°C) (Rebelo et al, 2019), pineapple's crown, rice husks and cotton (257-390°C) (Prado & Spinacé, 2015). From this figure, it can be observed that the pristine LeLeF started to decompose at 286 °C while for 6, 8 and 10 wt% NaOH treated LeLeF, they started to decompose at 287°C, 291°C, and 293°C respectively.…”

Section: Natural Fibrementioning

confidence: 99%

The Effect of Alkaline Treatment onto Physical, Thermal, Mechanical and Chemical Properties of Lemba Leaves Fibres as New Resources of Biomass

Nasir¹,

Jamaluddin²,

Zainudin³

et al. 2020

JST

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The main purpose of this paper is to investigate the effect of alkaline treatment on the physical, thermal, mechanical and chemical properties of pristine lemba leaves fibres (LeLeFs). LeLeFs were treated with 6, 8, and 10 wt% sodium hydroxide (NaOH) solution at room temperature for 24 h. In order to determine the functional group presence after the alkaline treatment, LeLeFs were analyzed using Fourier Transform Infrared (FTIR) Spectroscopy. The density of LeLeFs treated with 10 wt% NaOH solution recorded the highest density with 1.168 g/cm³. Morphology study showed that the diameter of fibre reduced with the increment of NaOH concentration. The removal of lignin and hemicellulose could be observed in the thermogravimetric analysis (TGA). Alkaline treatment enhanced the tensile properties of fibre and 10 wt% alkaline treated fibre resulted in the highest tensile strength, modulus and elongation of the fibre at 511.10 MPa, 11.76 GPa and 3.69% respectively. Chemical resistance analysis found that the treated fibre had better chemical resistance compared to untreated fibre. Therefore, it is substantiated that alkaline treatment affects the properties of LeLeF.

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Characterization of Fibers from Pineapple's Crown, Rice Husks and Cotton Textile Residues

Cited by 23 publications

References 39 publications

Ceramic matrices for immobilization of heavy metals adsorbed on rice husk

Ceramic matrices for immobilization of heavy metals adsorbed on rice husk

Using fibre property measurements to predict the tensile index of microfibrillated cellulose nanopaper

The Effect of Alkaline Treatment onto Physical, Thermal, Mechanical and Chemical Properties of Lemba Leaves Fibres as New Resources of Biomass

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