New opportunities to valorize biomass wastes into green materials

Spiridon, Iuliana; Darie-Niță, Raluca Nicoleta; Hitruc, Gabriela; Ludwiczak, Joanna; Niculaua, Marius

doi:10.1016/j.jclepro.2016.05.143

Cited by 51 publications

(44 citation statements)

References 25 publications

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“…Moreover, another factor responsible for the decrease in strength is related to the differences in polar properties between the nonpolar PLA and the polar filler. The decrease in the maximum stress values in tension agrees with the results from other authors [4,27,29]. The elongation at break of the PLA-PNSP biocomposites is shown in Table 2.…”

Section: Densitysupporting

confidence: 90%

“…In this case, hydrophilicity is a main feature of the nutshell due to its content of the hydroxyl groups from lignin [26]. Spiridon et al, reported that the lower resistance of the composites to water absorption is attributed to weak interfacial bonding between the filler and the matrix [27]. These data can be correlated with the mechanical properties of the biocomposites, as it will be discussed later.…”

Section: Water Absorptionmentioning

confidence: 95%

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Characterization of Extruded Poly(lactic acid)/Pecan Nutshell Biocomposites

Álvarez-Chávez

Sánchez-Acosta

Encinas

et al. 2017

International Journal of Polymer Science

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Pecan nutshells are a solid form of waste obtained from the pecan nut production and they have been explored as an inexpensive filler for incorporation by melt blending into the poly(lactic acid) (PLA) matrix. The pecan nutshells contain polyphenols, proteins, tannins, sugars, and lipids; some of these components must be released in order to improve adhesion with a polymeric matrix. The physicochemical characterization of the extruded biocomposites of pecan nutshell powder (PNSP) at 0, 5, and 7.5% wt. with two treatments (untreated and defatted) into PLA is presented in this work. The incorporation of PNSP into the PLA matrix caused a variation in color and density and increased the water absorption. However, some mechanical and thermal parameters of the biocomposites showed a significant decrease. The morphological analysis showed good dispersion and adhesion of the PNSP to the PLA matrix. Based on the results of the characterization, biocomposites formulated with defatted PNSP have a potential to be used as sustainable fillers in PLA biocomposites. These biocomposites have a potential application as food containers, packaging trays, or disposable items.

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Section: Densitysupporting

confidence: 90%

Section: Water Absorptionmentioning

confidence: 95%

Characterization of Extruded Poly(lactic acid)/Pecan Nutshell Biocomposites

Álvarez-Chávez

Sánchez-Acosta

Encinas

et al. 2017

International Journal of Polymer Science

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“…In recent years, great interest has been aroused in biomass waste and the carbohydrates derived from it, as they are abundant and relatively inexpensive and are a promising renewable source of carbon. The biomass is a useful chemical platform for synthesizing a broad range of products such as fuels, additives, and fine chemicals in general, thus representing an alternative to petroleum-derived products [1,2]. Biomass wastes include any organic material other than the raw material for which they were planted, e.g., waste from leaves and bagasse from the sugar cane during sugar production or paper or fruit peels and seeds in the food industry [3].…”

Section: Introductionmentioning

confidence: 99%

Biomass Derivative Valorization Using Nano Core-Shell Magnetic Materials Based on Keggin-Heteropolyacids: Levulinic Acid Esterification Kinetic Study with N-Butanol

Escobar

Blanco

Martínez

et al. 2019

Journal of Nanomaterials

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Magnetic materials based on Keggin heteropolyacids immobilized on mesoporous silica-coated magnetite particles with a core-shell structure were synthesized. The activity of the catalyst was studied in the esterification reaction of levulinic acid with n-butanol, and its kinetics was studied by the systematic variation of several reaction parameters, such as stirring speed, catalyst loading, molar ratio of reactants, and temperature. It was also seen that the reaction was free from any external mass transfer as well as intraparticle diffusion limitations and was intrinsically kinetically controlled. A second-order kinetic equation was found to be consistent with the experimental data. Also, an experimental activation energy of 17 kcal/mol was found. A solvent-free condition for this reaction has also added the green chemistry perception to the reaction. In addition, the resulting catalyst can be used repeatedly without significant decrease in activity.

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“…Nowadays, the society is facing important challenges mainly related with the substitution of petroleum based materials by renewable ones. In this way not only the the high dependence on finite-fossil fuels consumption could be reduced but also the unstable production of petroleum based materials and the derived environmental impacts, as the greenhouse gases (GHGs) emission (Spiridon et al, 2016). Therefore, numerous initiatives are being developed to promote the production and use of bioresources-based alternatives instead of petrochemical ones (Cherubini and Ulgiati, 2010;.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, numerous initiatives are being developed to promote the production and use of bioresources-based alternatives instead of petrochemical ones (Cherubini and Ulgiati, 2010;. In this sense, biomass could be considered as a sustainable alternative raw material to produce biomaterials because of its abundant availability, diversity and recyclability (Spiridon et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Comparative environmental Life Cycle Assessment of integral revalorization of vine shoots from a biorefinery perspective

Gullón

Dávila

et al. 2018

Science of The Total Environment

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The use of vine shoots as feedstock in biorefining activities to obtain bioproducts under efficient and optimized conditions could be crucial to make future high added value compounds and processes more sustainable. In this study, five different potential valorization scenarios from vine shoots differing on diverse extraction and delignification steps were assessed from an environmental perspective using the Life Cycle Assessment methodology to identify the most sustainable biorefining route. The main findings from this study reported that an increment on the number of valorization steps involved higher energy and chemical requirements deriving on worse environmental profiles. Scenarios incorporating fermentation of the glucose liquors or organosolv delignification performed the worst profiles. Autohydrolysis, concentration and freeze drying and enzymatic hydrolysis were the main responsible stages of the environmental burdens. Further research should be focused on optimizing chemicals and electricity requirements to develop greener systems.

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New opportunities to valorize biomass wastes into green materials

Cited by 51 publications

References 25 publications

Characterization of Extruded Poly(lactic acid)/Pecan Nutshell Biocomposites

Characterization of Extruded Poly(lactic acid)/Pecan Nutshell Biocomposites

Biomass Derivative Valorization Using Nano Core-Shell Magnetic Materials Based on Keggin-Heteropolyacids: Levulinic Acid Esterification Kinetic Study with N-Butanol

Comparative environmental Life Cycle Assessment of integral revalorization of vine shoots from a biorefinery perspective

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