Isolation, characterization and valorization of lignin from Pinus elliottii sawdust as a low-cost biosorbent for zinc removal

Bortoluz, Jordana; Cemin, Alexandra; Bonetto, Luis Rafael; Ferrarini, Fabrício; Esteves, Valdemar I.; Giovanela, Marcelo

doi:10.1007/s10570-019-02399-9

Cited by 16 publications

(9 citation statements)

References 57 publications

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“…In addition, the particles that compose the lignin sample are highly heterogeneous in terms of both shape and size, and they show high roughness. Similar morphologies were observed by Taleb et al [53] for modified lignin from coffee grounds, by Bortoluz et al [28] for lignin from Pinus elliottii sawdust and by Poletto et al [58] for lignin from E. grandis sawdust. Finally, this analysis showed that E. grandis lignin has a favourable morphology for the removal of dyes, such as MB.…”

Section: Field-emission Scanning Electron Microscopy (Fesem)supporting

confidence: 80%

“…In consideration of these results, the extraction of lignin from wood sawdust of the furniture industry has proved to be convenient since this sector generates a large amount of waste that rarely has an ecologically suitable destination and, therefore, can cause several problems to the environment [27,28]. Various positive results for the use of this material as an adsorbent have been reported [7].…”

Section: Introductionmentioning

confidence: 99%

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Characterization and use of a lignin sample extracted from Eucalyptus grandis sawdust for the removal of methylene blue dye

Cemin

Ferrarini

Poletto

et al. 2021

International Journal of Biological Macromolecules

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Section: Field-emission Scanning Electron Microscopy (Fesem)supporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Characterization and use of a lignin sample extracted from Eucalyptus grandis sawdust for the removal of methylene blue dye

Cemin

Ferrarini

Poletto

et al. 2021

International Journal of Biological Macromolecules

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“…On the other hand, of particular interest were the fiber contents, which presented a significant difference ( p < 0.05), which in the case of the dry stem had a higher value (62.28%). That is why it was decided to obtain the biosorbents from this fraction of the plant, rich in cellulose, hemicellulose, and lignin, which are essential in the adsorption of heavy metals [ 34 , 35 , 36 , 37 , 38 ].…”

Section: Resultsmentioning

confidence: 99%

Modified Polymeric Biosorbents from Rumex acetosella for the Removal of Heavy Metals in Wastewater

et al. 2022

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The contamination of water resources by effluents from various industries often contains heavy metals, which cause irreversible damage to the environment and health. The objective was to evaluate different biosorbents from the weed Rumex acetosella to remove metal cations in wastewater. Drying, grinding and sieving of the stems was carried out to obtain the biomass, retaining the fractions of 250 to 500 µm and 500 to 750 µm, which served to obtain the biosorbents in natura (unmodified), acidic, alkaline, and mixed. Proximal analysis, PZC, TOC, removal capacity, influence of pH, functional groups, thermal analysis, structural characteristics, adsorption isotherms, and kinetic study were evaluated. The 250 µm mixed treatment was the one that presented the highest removal percentages, mainly due to the OH, NH, -C-H, COOH, and C-O functional groups achieving the removal of up to 96.14% of lead, 36.30% of zinc, 34.10% of cadmium and 32.50% of arsenic. For contact times of 120 min and an optimum pH of 5.0, a loss of cellulose mass of 59% at 328 °C and a change in the surface of the material were also observed, which allowed for obtaining a topography with greater chelating capacity, and the Langmuir and pseudo-second order models were better fitted to the adsorption data. The new biosorbents could be used in wastewater treatment economically and efficiently.

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“…Lignin is the second main constituent of lignocellulosic biomass and is the second most abundant biopolymer in nature [ 1 ]. Its structural and chemical properties vary, depending on the type of lignocellulosic material, growing conditions, and the isolation process [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Valorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI)

Lourenço

Kukić²,

Vasić³

et al. 2022

Molecules

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The main objective of this work was to assess Eucalyptus globulus lignin as an adsorbent and compare the results with kraft lignin, which has previously been demonstrated to be an effective adsorbent. Eucalypt lignin was extracted (by the dioxane technique), characterised, and its adsorption properties for Cr(VI) ions were evaluated. The monomeric composition of both types of lignin indicated a high content of guaiacyl (G) and syringyl (S) units but low content of p-hydroxyphenyl (H), with an H:G:S ratio of 1:50:146 (eucalypt lignin) and 1:16:26 (kraft lignin), as determined by Py-GC/MS. According to elemental analysis, sulphur (2%) and sodium (1%) were found in kraft lignin, but not in eucalypt lignin. The adsorption capacity of the eucalypt lignin was notably higher than the kraft lignin during the first 8 h, but practically all the ions had been absorbed by both the eucalypt and kraft lignin after 24 h (93.4% and 95%, respectively). Cr(VI) adsorption onto both lignins fitted well using the Langmuir adsorption isotherm model, with capacities of 256.4 and 303.0 mg/g, respectively, for eucalypt and kraft. The study’s overall results demonstrate the great potential of eucalypt lignin as a biosorbent for Cr(VI) removal from aqueous solutions.

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Isolation, characterization and valorization of lignin from Pinus elliottii sawdust as a low-cost biosorbent for zinc removal

Cited by 16 publications

References 57 publications

Characterization and use of a lignin sample extracted from Eucalyptus grandis sawdust for the removal of methylene blue dye

Characterization and use of a lignin sample extracted from Eucalyptus grandis sawdust for the removal of methylene blue dye

Modified Polymeric Biosorbents from Rumex acetosella for the Removal of Heavy Metals in Wastewater

Valorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI)

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