Biowaste-derived substances as a tool for obtaining magnet-sensitive materials for environmental applications in wastewater treatments

Abstract

h i g h l i g h t sBiowaste substances (BBS) were used as stabilizers for the production of magnetic NPs. TGA-FTIR analysis of evolved gas was performed to evaluate materials composition. Photo-activity of BBS-stabilized NPs was tested under (photo-)Fenton conditions. Good performances in caffeine abatement were obtained at circumneutral pH. Results clearly highlight the BBS capacity as enhancing agent in AOP treatments.

Liquid phase oxidation of cinnamyl alcohol to cinnamaldehyde using multiwall carbon nanotubes decorated with zinc-manganese oxide nanoparticles

“…This data was comparable with the SEM (Figure 1a and b). Previously similar results were obtained [32,33], when MWCNTs was decorated with MnZnFe2O4, the crystallite size 39.5 and 19.9 nm before and after loading respectively, This decrease in size was attributed to the adsorption of entire ions on the surface of CNTs, and the spreading on the prevented the accumulation of particles [33]. These results suggest that the decoration of FMWCNTs with ZnMn oxide nanoparticles was successful.…”

The Innovation Comes from the Sea: Chitosan and Alginate Hybrid Gels and Films as Sustainable Materials for Wastewater Remediation

“…Despite the wide number of studies performed on alginate and chitosan hydrogels, the preparation of new materials with improved features and performances is a cutting-edge theme. Herein, the additive chosen and tested for enhancing the adsorption capacity of the hydrogels is named BBS-GC, with the acronym corresponding to bio-based substances isolated from green composted biowaste [29]. It is made of water soluble macromolecules with a complex lignin-derived structure containing acid (i.e., carboxylic groups) and basic functional groups (i.e., amino group) bonded to aromatic and aliphatic chains, plus a portion of ashes (a similar structure found in a previous work [30] is reported in Scheme 1C) [29,31].…”

“…Herein, the additive chosen and tested for enhancing the adsorption capacity of the hydrogels is named BBS-GC, with the acronym corresponding to bio-based substances isolated from green composted biowaste [29]. It is made of water soluble macromolecules with a complex lignin-derived structure containing acid (i.e., carboxylic groups) and basic functional groups (i.e., amino group) bonded to aromatic and aliphatic chains, plus a portion of ashes (a similar structure found in a previous work [30] is reported in Scheme 1C) [29,31]. The large amount of freely available functionalities makes BBS-GC an interesting adsorption promoter, as already demonstrated in previous studies on other systems [32,33].…”

Design, Realization, and Characterization of Advanced Adhesives for Joining Ultra‐Stable C/C Based Components

“…[21][22][23] In order to investigate the chemical nature of the gaseous species that evolved during the heating, a well-established TGA-EGA approach was employed. [24,25] The analysis was carried out on both of the cured adhesives (Figures 6a,b).…”