Study of the Influence of the Almond Variety in the Properties of Injected Parts with Biodegradable Almond Shell Based Masterbatches

This study reveals the simultaneous deep oxidation of toluene and cyclohexane over optimal supported bimetallic catalysts over almond shell based activated carbon.

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Organic Dyes Adsorption on the Almond Shell (Prunus dulcis) as Agricultural Solid Waste from Aqueous Solution in Single and Binary Mixture Systems

Biointerface Research in Applied Chemistry ◽

10.33263/briac122.20222040 ◽

2021 ◽

Vol 12 (2) ◽

pp. 2022-2040

Keyword(s):

Aqueous Solution ◽

Binary Mixture ◽

Contact Time ◽

Binary Systems ◽

Organic Dyes ◽

Low Cost ◽

Kinetic Studies ◽

Prunus Dulcis ◽

Order Kinetic ◽

Almond Shell

Almond shell (AS) is a low-cost adsorbent used in this study for the removal of methylene blue (MB), crystal violet (CV), and Congo red (CR) from an aqueous solution in single and mixture binary systems. The low-cost adsorbent was characterized by FTIR and SEM analysis. The effects of AS dose, contact time, initial dye concentration, pH, and temperature on MB, CV, and CR adsorption were studied in a single system. In a binary system, the MB, CV, and CR were removed from the mixture of MB+CR, CV+MB, and CV+CR with a percentage in volume ranging from 0 to 100 % in MB and CV, and CR. Kinetic studies showed rapid sorption following a second-order kinetic model with of contact time of 10 min. The modulation of adsorption isotherms showed that retention follows the Langmuir model. The thermodynamic parameters proved that the MB, CV, and CR adsorption process was feasible, spontaneous, and exothermic. The synergy adsorption between dyes in a binary mixture of MB+CR and CV+CR, while the competition adsorption between dyes in a binary mixture of MB+ CV.

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Comparative study of 17β-estradiol removal from aqueous solutions using pine bark and almond shell as adsorbents

Microchimica Acta ◽

10.1007/s00604-010-0531-x ◽

2011 ◽

Vol 173 (1-2) ◽

pp. 111-117 ◽

Cited By ~ 6

Author(s):

Fernando G. Braga ◽

Sandra Pinto ◽

Maria Cristina G. Antunes

Keyword(s):

Comparative Study ◽

Aqueous Solutions ◽

Pine Bark ◽

Almond Shell ◽

17Β Estradiol

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Volatile and semivolatile emissions from the pyrolysis of almond shell loaded with heavy metals

The Science of The Total Environment ◽

10.1016/j.scitotenv.2017.09.116 ◽

2018 ◽

Vol 613-614 ◽

pp. 418-427 ◽

Cited By ~ 12

Author(s):

M.A. Martín-Lara ◽

N. Ortuño ◽

J.A. Conesa

Keyword(s):

Heavy Metals ◽

Almond Shell

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Development and Characterization of Sustainable Composites from Bacterial Polyester Poly(3-Hydroxybutyrate-co-3-hydroxyhexanoate) and Almond Shell Flour by Reactive Extrusion with Oligomers of Lactic Acid

Polymers ◽

10.3390/polym12051097 ◽

2020 ◽

Vol 12 (5) ◽

pp. 1097 ◽

Cited By ~ 1

Author(s):

Juan Ivorra-Martinez ◽

Jose Manuel-Mañogil ◽

Teodomiro Boronat ◽

Lourdes Sanchez-Nacher ◽

Rafael Balart ◽

...

Keyword(s):

Lactic Acid ◽

Mechanical Characterization ◽

Linear Thermal Expansion ◽

Reactive Extrusion ◽

Thermomechanical Analysis ◽

Almond Shell ◽

Scanning Calorimetry ◽

Filler Reinforcement ◽

Lignocellulosic Filler

Eco-efficient Wood Plastic Composites (WPCs) have been obtained using poly(hydroxybutyrate-co-hexanoate) (PHBH) as the polymer matrix, and almond shell flour (ASF), a by-product from the agro-food industry, as filler/reinforcement. These WPCs were prepared with different amounts of lignocellulosic fillers (wt %), namely 10, 20 and 30. The mechanical characterization of these WPCs showed an important increase in their stiffness with increasing the wt % ASF content. In addition, lower tensile strength and impact strength were obtained. The field emission scanning electron microscopy (FESEM) study revealed the lack of continuity and poor adhesion among the PHBH-ASF interface. Even with the only addition of 10 wt % ASF, these green composites become highly brittle. Nevertheless, for real applications, the WPC with 30 wt % ASF is the most attracting material since it contributes to lowering the overall cost of the WPC and can be manufactured by injection moulding, but its properties are really compromised due to the lack of compatibility between the hydrophobic PHBH matrix and the hydrophilic lignocellulosic filler. To minimize this phenomenon, 10 and 20 phr (weight parts of OLA-Oligomeric Lactic Acid per one hundred weight parts of PHBH) were added to PHBH/ASF (30 wt % ASF) composites. Differential scanning calorimetry (DSC) suggested poor plasticization effect of OLA on PHBH-ASF composites. Nevertheless, the most important property OLA can provide to PHBH/ASF composites is somewhat compatibilization since some mechanical ductile properties are improved with OLA addition. The study by thermomechanical analysis (TMA), confirmed the increase of the coefficient of linear thermal expansion (CLTE) with increasing OLA content. The dynamic mechanical characterization (DTMA), revealed higher storage modulus, E’, with increasing ASF. Moreover, DTMA results confirmed poor plasticization of OLA on PHBH-ASF (30 wt % ASF) composites, but interesting compatibilization effects.

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