Economía Circular

Economía Circular

Rational design of metal/N-doped carbon nanocatalysts via sol-gel method for obtaining high catalytic activity toward reduction reactions of 4-nitrophenol and Rhodamine B
- This work reports main principles for designing metal/N-doped carbon (metal/NC) nanocatalysts via sol-gel method with high catalysis performances toward hydrogenation reduction reactions of...
Addition of walnut shells biochar to alkaline arable soil caused contradictory effects on CO2 and N2O emissions, nutrients availability, and enzymes activity
- Mitigation of greenhouse gas (GHGs) emissions and improving soil health using biochar (BC) shall help achieving the UN-Sustainable Development Goals. The impacts of walnut shells biochar (WSB)...
Litter ingestion and entanglement in green turtles: An analysis of two decades of stranding events in the NE Atlantic
- Survivorship of early life stages is key for the well-being of sea turtle populations, yet studies on animals that distribute around oceanic areas are very challenging. So far, the information on...
Energy-efficient glucose recovery from chestnut shell by optimization of NaOH pretreatment at room temperature and application to bioethanol production
- Biofuel policies are currently being implemented globally to reduce greenhouse gas emissions. The recent European regulation, Renewable Energy Directive (RED) II, states that renewable resources...
Exploring the potential of vermicompost as a sustainable strategy in circular economy: improving plants’ bioactive properties and boosting agricultural yield and quality
16/01/2022 - Consumption of natural resources and waste generation continues to rise as the human population increases. Ever since the industrial revolution, consumers have been adopting a linear economy model...
Recycling of synthetic waste wig fiber in the production of cement-adobe for building envelope: physio-hydric properties
16/01/2022 - Waste wigs are often disposed off in their volume on landfills, thus constituting a nuisance to the environment. Recycling these wigs in masonry bricks is a way via which they can be recycled and...
Pd on imidazolium ionic liquid modified halloysite: A potent catalyst for the hydrogenation of nitro-compounds under mild reaction condition
- Cl-functionalized halloysite nanoclay was modified by multi imidazolium ionic liquids through successive reactions with imidazole, epichlorohydrin, tris(2-aminoethyl)amine and the as-prepared...
Flame retardant treatment of jute fabric with chitosan and sodium alginate
01/02/2022 - Jute is a low-cost lignocellulosic fiber, and can be applied as upholstery fabrics and composites in automotive, transport and architecture industries. Such applications have flame retardant...
Efficient thermo-oxidative reclamation of green tire rubber and silanized-silica/rubber interface characterization
01/02/2022 - A stepwise separation of reclaimed silanized silica (r-SS) from waste green tire rubbers was achieved using a thermo-oxidative reclamation process, and the interfacial interaction between...
Polymer-supported first-row transition metal schiff base complexes: Efficient catalysts for epoxidation of alkenes
01/02/2022 - This review recapitulates current progress in the synthesis of unsupported (US) and polymer-supported (PS) first row transition metal (Tm) Schiff base complexes and their catalytic activities for...
Efficient adsorptive removal of fluoroquinolone antibiotics from water by alkali and bimetallic salts co-hydrothermally modified sludge biochar
- Fluoroquinolones are one of most commonly used antibiotics for preventing and treating bacterial infections and their unsatisfactory removal by conventional wastewater treatment technology have...
Effect of Ni/Al2O3 mixing on the coking behavior of bio-oil during its pyrolysis: Further understanding based on the interaction between its components
01/05/2022 - Bio-oil can be converted to chemicals, carbon material, or syngas by various thermochemical processes which are always preceded with the pyrolysis step. In bio-oil pyrolysis, coke formation is...
A density functional theory study on the effect of acetylene on vinyl acetate synthesis from acetoxylation of ethylene over Pd-Au catalysts
- In this work, the reaction network of acetylene on Pd-Au catalyst was constructed firstly, and the single adsorption configurations and adsorption energies and electronic properties of key species...
A biodegradable chitosan-based composite film reinforced by ramie fibre and lignin for food packaging
- To solve the problem of environmental pollution caused by plastic food packaging films, a biodegradable chitosan-based film containing micro ramie fibre and lignin was prepared by the casting...
Effects of carbon nanotube dosage and aggregate size distribution on mechanical property and microstructure of cemented rockfill
- The mechanical and structural properties of cemented rockfill produced by mineral wastes as recycled aggregates limit its application. In this paper, the macroscopic mechanical and microscopic...
Valorization of Biomass to Furfural by Chestnut Shell-based Solid Acid in Methyl Isobutyl Ketoneâ??Waterâ??Sodium Chloride System
- Abstract Recently, highly efficient production of furfural from available, abundant, inexpensive, and renewable lignocellulosic biomass has gained much attention by using...
Catalytic preparation of carbon nanotube/SiC whisker bonded low carbon MgO–C refractories and their high-temperature mechanical properties
- The effects of Co, Fe and Ni catalysts generated from their nitrate precursors on the formation of carbon nanotubes (CNTs) from pyrolysis of phenolic resin were investigated, and the former two...
Preparation and textural evolution: From organosilane aerogel to SiOC aerogels
- Generally, SiOC aerogels are prepared utilizing the high-temperature pyrolysis of polyorganosiloxanes or polycarboorganosilanes in an inert gas atmosphere. However, the crosslinking and drying of...
Integrated biorefinery approach to valorize citrus waste: A sustainable solution for resource recovery and environmental management
- Citrus fruits are extensively cultivated, consumed and major processed horticulture crops around the globe. High processing and consumption generate huge quantities of solid organic wastes. Citrus...
Synthesis of a novel cationic hydrophobic shale inhibitor with preferable wellbore stability
- To solve the problems of wellbore instability and collapse caused by clay hydration during the horizontal drilling process of shale gas, a novel cationic hydrophobic shale inhibitor ADD was...
Characterization of a coating for radioprotection, by X-ray diffraction, scanning electron microscopy, and dispersive energy spectroscopy
28/02/2022 - This article refers to the study of the characterization of the mixture of barite powder (BaSO4) and recycled lead powder (Pb). The proposed methodology consists of a mixture of powders,...