Economía Circular

Economía Circular

Green and reusable Ag/AgCl-TiO2 nanocomposites for visible light-triggered dye degradation
- Ag/AgCl-TiO2 plasmonic nanocomposites (NCs) are endowed with excellent visible-light photocatalytic activity. However, only a few studies investigated environmentally friendly approaches to their...
Green preparation of nano-zero-valent iron-copper bimetals for nitrate removal: Characterization, reduction reaction pathway, and mechanisms
- In this study, green tea was used as a reducing agent to prepare GT-nZVI/Cu nano-zero-valent iron-copper bimetallic materials for nitrate degradation. Through single factor experiments, the...
Tuning the electronic structure and hydrophilicity of Prussian-blue type catalysts by incorporation of alklypyrazinium bromides, for enhanced activity
- Prussian blue (PB) type material, a historical metal coordination material, is widely used in batteries, catalyst, and for energy storage. However, the scarcity of active sites and its immutable...
Mechanistic and kinetic studies of benzyl alcohol photocatalytic oxidation by nanostructured titanium (hydro)oxides: Do we know the entire story?
- Selective upgrade of lignocellulosic biomass-derived aromatic compounds by photocatalytic oxidation is assumed as a prosperous, environmentally friendly, and cost-effective process. We present for...
Process development, techno-economic analysis and life-cycle assessment for laccase catalyzed synthesis of lignin hydrogel
- In this study, an effort has been undertaken to study process design, techno-economic analysis, and life-cycle assessment (LCA) of lignin hydrogel (LH) which has potential applications in...
Recent trends using natural polymeric nanofibers as supports for enzyme immobilization and catalysis
28/09/2022 - All the disciplines of science, especially biotechnology, have given continuous attention to the area of enzyme immobilization. However, the structural support made by material science intervention...
The design of multi-responsive nanohydrogel networks of chitosan for controlled drug delivery
- High swelling hydrogel networks (HSHNs) are materials with the ability to high swelling and outstanding candidates for sustained drug delivery systems (DDSs). The present paper demonstrates three...
Absorption, metabolism, and functions of hyaluronic acid and its therapeutic prospects in combination with microorganisms: A review
- Hyaluronic acid (HA) is key to the stability of the internal environment of tissues. HA content in tissues gradually decreases with age, causing age-related health problems. Exogenous HA...
Valorization of chitin biomass into N-containing chemical 3-acetamido-5-acetylfuran catalyzed by simple Lewis acid
- 3-Acetamido-5-acetylfuran(3A5AF) is a nitrogen-containing fine chemical and has broad application prospects and high research value. Herein, we report a mild and efficient method for the synthesis...
Fabrication of a waste cotton fabrics-based nanosystem for simultaneous removal of Cu(II) and Pb(II)
- Herein, a waste cotton fabrics-based nanosystem was fabricated to simultaneously remove copper (Cu(II)) and lead ions (Pb(II)) from water and soil. Therein, carboxyl-functionalized zinc oxide...
Bioaccumulation of PCDD/Fs and PCBs in free-range hens: Congener fingerprints and biotransfer factors
- The bioaccumulation of lipophilic environmental contaminants in farm animals is an important issue to control and prevent human exposure to toxic pollutants. Free-range hens were used as a model to...
Two-stage anaerobic membrane bioreactor for co-treatment of food waste and kitchen wastewater for biogas production and nutrients recovery
- Co-digestion of organic waste and wastewater is receiving increased attention as a plausible waste management approach toward energy recovery. However, traditional anaerobic processes for...
Self-assembly of colloidal lignin nanosphere particles blended with chitosan composite coated bagasse paper: An eco-friendly food packaging with antimicrobial properties
- Chitosan/lignin nanocomposites were coated on bagasse paper surface to improve antimicrobial packaging. A commercial softwood kraft lignin was selected and purified by fractionation process using...
Controllable depositing behaviors and deposited morphologies of inkjet droplets on high energy surface
- The high energy surface (HES) could realize a super-spreading process for droplet. In this work, a facile method was applied to fabricate HES by hydrothermally treating aluminum foil. The inkjet...
Multi-objective simulation–optimization via kriging surrogate models applied to natural gas liquefaction process design
01/01/2023 - A surrogate-based multi-objective optimization framework is employed in the design of natural gas liquefaction processes using reliable, black-box process simulation. The conflicting objectives...
Exploring lessons from five years of biochar-producing cookstoves in the Kagera region, Tanzania
- Biochar-producing cookstoves can supply fuel-efficient heat for cooking in developing countries. The produced biochar can be used as a soil amendment, providing a range of environmental and...
Crystal mud transparent slime as a glazing material for net-zero energy buildings: Enhanced energy savings, diurnal lighting, and CO2 mitigation
- Modern buildings are highly glazed and necessitate an enormous amount of energy to maintain thermal and visual comfort. To reduce the energy requirements of such buildings, conventional glazings...
Complex dynamics in sustaining clean cooking and food access through a pandemic: A COVID-19 impact study in peri-urban Cameroon
- Access to clean energy for cooking is central to achieving Sustainable Development Goal 7. Latest predictions suggest that this goal will not be met by 2030, with further setbacks due to the...
The screening of emerging micropollutants in wastewater in Sol Plaatje Municipality, Northern Cape, South Africa
- Although pollutants pose environmental and human health risks, the majority are not routinely monitored and regulated. Organic pollutants emanate from a variety of sources, and can be classified...
Multi-type emission factors quantification of black carbon from agricultural machinery based on the whole tillage processes in China
- Black carbon (BC), as one of the short-lived climate pollutants, is becoming more prominent contribution from non-road mobile source, especially for agricultural machinery (AM) in China. However, the...
Extraction and quantification of polystyrene nanoplastics from biological samples
- Accurate quantification of nanoplastics (NPs) in complex matrices remains a challenge, especially for biological samples containing high content of organic matters. Herein, a new method extracting...