Economía Circular

Economía Circular

Study on macro-meso mechanical properties of cemented tailings backfill with high fly ash content
08/08/2022 - The use of cement and fly ash (FA) to prepare cemented tailings backfill (CTB) lowers backfill mining costs while also reducing pollution caused by the accumulation of waste materials like...
Magic extraction: solid-phase extraction and analytical pyrolysis to study polycyclic aromatic hydrocarbon and polychlorinated biphenyls in freshwater
08/08/2022 - Polycyclic aromatic hydrocarbons and polychlorinated biphenyls are commonly categorized as persistent organic pollutants. In order to analyze these pollutants, customized stationary phases are...
Photo–degradable and recyclable starch/Fe3O4/TiO2 nanocomposites: feasibility of an approach to reduce the recycling labor cost in plastic waste management
08/08/2022 - In this research, a biodegradable starch/Fe3O4/TiO2 bio-nanocomposites (SFT) were produced using different nano Fe3O4/TiO2 (FT) (3, 5, and 10 (wt% dry based)) contents. Mechanical properties,...
Calcined Coal Gangue Fines as the Substitute for Slag in the Production of Alkali-Activated Cements and Its Mechanism
08/08/2022 - Nowadays, upcycling coal gangue into aggregates has become a popular method; nevertheless, the utilization of coal gangue fines (CGFs), a secondary waste generated during the production of coal...
OSDA-free synthesis of zeolite beta: Broadening the methodology for a successful use of the product as a seed
- The synthesis of zeolite beta without any organic structure directing agents (OSDAs) is achieved by the addition of seed crystals. Applying the obtained OSDA-free synthesized zeolite beta as seed...
Design of macrostructured bimetallic MWCNT catalysts for multi-phasic hydrogenation in water treatment with pre- and post-coating metal phase impregnation
- The development of macrostructured catalysts for remediation processes is a key step towards the sustainability of multi-phase environmental systems, such as the catalytic reduction of inorganic...
Palladium catalysts based on porous aromatic frameworks for vanillin hydrogenation: Tuning the activity and selectivity by introducing functional groups
01/10/2022 - The aim of the current work was to study the activity of supported palladium catalysts based on porous aromatic frameworks (PAF) in vanillin hydrogenation, and to develop the methods for...
MOF-derived In2O3 nanotubes/Cr2O3 nanoparticles composites for superior ethanol gas-sensing performance at room temperature
- Semiconductor metal oxide gas sensors have been frequently used for real-time monitoring of various gases in different applications. However, the working temperature is usually high (>150 °C),...
Key role of interphase in continuous fiber 3D printed ceramic matrix composites
- During the continuous fiber (CF) 3D printing process, the high viscosity of the printing materials makes it difficult to penetrate into the fiber bundles, resulting in the lack of matrix and poor...
Ultra-tough, photothermal healing and fire safety polystyrene/hydroxylated black phosphorus-triazine COF composites
- Devoting to coping with safety risk spreading with polymers, this work achieves dramatic synergistic improvements in composite toughness, photothermal healing, and fire safety through a novel...
Mechanical test and constitutive model of recycled plastic fiber reinforced recycled concrete
19/09/2022 - The use of the Recycled Plastic Fiber Reinforced Recycled Concrete (RPFRRC) can not only improve the mechanical properties of concrete, but it also can reuse the waste. The uniaxial compression...
Chemical corrosion behavior of chrome-free SiC-MgAl2O4 composites under simulated coal-water gasification conditions
- The degradation behavior of SiC-MgAl2O4 materials contacting with coal gasifying slag was studied via rotary kiln testing at 1500 °C, to assess the viability of this material type as...
Livestock manure availability and syngas production: A case of Sudan
15/11/2022 - Sudan is facing an energy crisis caused by a large deficit in electric power supply and transportation fuels such as gasoline and diesel. Only about 32% of the population have access to...
Hydrogen and power co-production from autothermal biomass sorption enhanced chemical looping gasification: Thermodynamic modeling and comparative study
01/10/2022 - Calcium looping and chemical looping technologies envisage advanced solutions for H2 production. This study compared the H2 and power co-production from biomass sorption enhanced gasification...
Synthesis of Cocos nucifera derived surfactant and its application in growth kinetics of methane gas hydrates for energy storage and transportation
01/10/2022 - The impact of surfactants on the formation kinetics and storage of gaseous fuels such as methane, propane, and hydrogen in the form of gas hydrates is well known. However, the excess generation of...
Quantifying textile streams and recycling prospects in Europe by material flow analysis
01/11/2022 - Textiles represent the fourth highest pressure commodity on a global scale and cause significant environmental, climate and social impacts under resources and waste perspectives. Considering the...
Comprehensive characterization of halogenated flame retardants and organophosphate esters in settled dust from informal e-waste and end-of-life vehicle processing sites in Vietnam: Occurrence, source estimation, and risk assessment
- Information about the co-occurrence of halogenated flame retardants (HFRs) and organophosphate esters (OPEs) in the environment of informal waste processing areas is still limited, especially in...
Valorization of wastewater to recover value-added products: A comprehensive insight and perspective on different technologies
01/11/2022 - In recent years, due to rapid globalization and urbanization, the demand for fuels, energy, water and nutrients has been continuously increasing. To meet the future need of the society, wastewater is...
Inhibition on Chloroaromatics during thermal conversion processes of Municipal Solid Waste by oxygen-induced low-temperature pre-dechlorination and hydrogen-assisted in-situ Cl capture
01/12/2022 - In thermal treatment of Municipal Solid Waste (MSW), oxygen-induced low-temperature pre-dechlorination coupled with hydrogen-assisted Cl capture in subsequent pyrolysis was proposed as an...
Catalytic depolymerization of lignin via transfer hydrogenation strategy over skeletal CuZnAl catalyst
01/12/2022 - Selective cleavage of the aromatic CO bonds in lignin is a crucial step for lignin valorization to produce value-added chemicals, however, the development of efficient catalysts for mild...
Boosting sunlight-powered photocatalytic fuel cell with S-scheme Bi2WO6/ZnO nanorod array composite photoanode
- The construction of intimate contact and effective segregation of charge carrier is a prominent approach to ameliorate the photoactivity of heterojunction catalyst. Herein, a S-scheme flake...