Economía Circular
Economía Circular
Sustainable cannabinoids purification through twin-column recycling chromatography and green solvents
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In the present study, twin-column recycling chromatography has been employed for the purification of a Cannabis extract by using a green solvent, ethanol, as the mobile phase. In particular, the...
Recyclability of Paper?Based Composites for Packaging Applications – The Role of Evaluation Methods
14/05/2024 -
This inaugural review addresses paper and paper?composite recyclability assessments amid circular and bioeconomy trends. Evolving alternative packaging options demand adaptable recycling methods....
Synthesis of diesel?like fuels using waste cooking oil and waste polyethylene via Co?pyrolysis process
14/05/2024 -
This study investigated the effects of different proportions of waste polyethylene (WP) and waste cooking oil (WCO) on the chemical and physical properties of the resulting co?pyrolysis oil produced...
Hydrogen-rich syngas upgrading via CO2 adsorption by amine-functionalized Cu-BTC: the effect of different amines
15/05/2024 -
Syngas produced from supercritical water gasification typically contain a high amount of CO2 along with H2. In order to improve the quality of syngas, amine-functionalized copper...
Seeking the adsorption of tetracycline in water by Fe-modified sludge biochar at different pyrolysis temperatures
16/05/2024 -
The composite material SBC-Fe-x with sludge and Fe3+ was developed by different calcination temperatures (600, 700, and 800 °C) for the removal of tetracycline (TC). The adsorption rates of...
Thermoplastic polyimide with low dielectric properties enabled by the 2,2??spirobifluorene group
15/05/2024 -
This work investigates the feasibility of producing low melt flow rate recycled polypropylene (PP). For this purpose, recyclates are produced from extrusion blow molded PP packaging waste and...
Zn promoted GaZrOx ternary solid solution oxide combined with SAPO?34 effectively converts CO2 to light olefins with low CO selectivity
10/05/2024 -
We proposed a new strategy for CO2 hydrogenation to prepare light olefins by introducing Zn into GaZrOx to construct ZnGaZrOx ternary oxides, which was combined with SAPO?34 to prepare a...
Technological advances and challenges of reclaimed asphalt pavement (RAP) application in road engineering—a bibliometric analysis from 2000 to 2022
11/05/2024 -
Reclaimed asphalt pavement (RAP) is a valuable material that can be recycled and reused in road engineering to reduce environmental impact, resource utilization, and economic costs. However, the...
Continuous Carbon Fiber Reinforced SiC Ceramic Matrix Composites by Vertical Fiber Laying Combined with Material Extrusion 3D Printing
09/05/2024 -
This research proposes an innovative vertical fiber laying method, combined with material extrusion (ME) 3D printing technology and precursor infiltration and pyrolysis (PIP) to densification,...
Biochar from co-pyrolysis of biological sludge and woody waste followed by chemical and thermal activation: end-of-waste procedure for sludge management and biochar sorption efficiency for anionic and cationic dyes
09/05/2024 -
Nine biochars were produced by co-pyrolysis of sawdust and biological sludge following the “design of experiment” approach. Two kinds of sludge (both deriving from the treatment of mixed...
Halloysite nanotubes immobilized by copper itaconic acid complexes as smoke suppressant for soft polyvinyl chloride
09/05/2024 -
A solvent?free and continuous approach was used to produce high?density polyethylene (HDPE)?based vitrimers where maleic anhydride (MA) acted as a reactive grafting agent while DM helped to lower the...
Reprocessability in Engineering Thermosets Achieved Through Frontal RingOpening Metathesis Polymerization
03/05/2024 -
Here, frontal ring?opening metathesis polymerization (FROMP) is shown to be an effective technique to manufacture high?performance poly(dicyclopentadiene) (pDCPD) thermosets with regenerative...
Ein Überblick zum Recycling und zur Verwertung glasfaserverstärkter KunststoffeA Review on Recycling and Reuse of Glass Fiber?Reinforced Plastics
02/05/2024 -
Für glasfaserverstärkte Kunststoffe existieren mechanische, thermische und chemische Recyclingverfahren. Daneben gibt es noch zahlreiche Konzepte für eine Weiterverwertung. Nach einem...
Introduction of Organic Dyes into Cadmium(II) MOF for Tunable Light Emission and Highly Sensitive Probing Antibiotics
02/05/2024 -
A honeycomb porous cadmium(II) metal–organic framework {[Cd(L)(H2O)]·NMP·5H2O}n (1, H2L = 1?(4?carboxyphenyl)?1H?pyrazole?3?carboxylic acid and NMP = 1?methyl?2?pyrrolidinone) was obtained using...
Synthesis of new sustainable polyester?type hydrogels from chemical recycled poly(ethylene terephthalate) products applied on the removal of indigo carmine dye
05/05/2024 -
The synthesis route and properties of Bio?WPUA emulsions.AbstractThe bio?based hydrophilic monoglycerol succinate was synthesized and reacted with bio?based raw materials including polyols,...
Optimization of Enzymatic Transesterification of Acid Oil for Biodiesel Production Using a Low-Cost Lipase: The Effect of Transesterification Conditions and the Synergy of Lipases with Different Regioselectivity
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Abstract This study describes the enzymatic production of second-generation biodiesel using low-quality acid oil as a substrate. Biolipasa-R, a commercially available and low-cost...
Approaches to Recycling of Engine Air Filters
29/04/2024 -
The recycling of air engine filters is another step towards the closed?loop concept for automobiles. First approaches for the mechanical recycling of engine air filters are described. The feasibility...
Tetracycline (TC) removal from wastewater with activated carbon (AC) obtained from waste grape marc: activated carbon characterization and adsorption mechanism
01/05/2024 -
In this study, activated carbons were obtained from grape marc for tetracycline removal from wastewater. Activated carbons were obtained by subjecting them to pyrolysis at 300, 500, and 700 °C,...
Application of chemically modified waste tucumã (Astrocaryum aculeatum) seeds in the biosorption of methylene blue: kinetic and thermodynamic parameters
02/05/2024 -
Dye effluents cause diverse environmental problems. Methylene blue (MB) dye stands out since it is widely used in the textile industry. To reduce the pollution caused by the MB, we developed...
Tuning Structural Characteristics of Corn Stover Through Ammonium and Sodium Sulfite (ASS) Pretreatment for Enhanced Enzymatic Hydrolysis
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Abstract The ammonia fiber expansion (AFEX) pretreatment of lignocellulosic biomass offers a significant advantage in terms of obtaining high glucan conversion, with the added...
Sustainable strategies towards better utilization of synthetic polymers
26/04/2024 -
The abstract provides an overview of a study focused on analyzing diverse strategies to achieve sustainable utilization of synthetic polymers through effective waste management. The escalating global...
