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Sustainable valorisation of cigarette butts waste through pyrolysis: An insight into the pyrolytic products and subsequent aqueous heavy metals removal by pyrolytic char

In this study, cigarette butts (CB) waste was pyrolyzed over a wide temperature range (400–700 °C) using Pyro/GC–MS and slow pyrolysis experiments. The feedstock and char products were extensively investigated using TGA, elemental analysis, surface area and porosity analysis, SEM-EDS, XRD, and FT-IR, and subsequently tested for their ability to remove Ni (II) and Cu (II) from aqueous solutions. The Pyro/GC–MS analysis revealed the presence of several useful compounds including acids, esters a...

Room-Temperature Micron-Scale Exciton Migration in a Stabilized Emissive Molecular Aggregate

We report 1.6 ± 1 μm exciton transport in self-assembled supramolecular light-harvesting nanotubes (LHNs) assembled from amphiphillic cyanine dyes. We stabilize LHNs in a sucrose glass matrix, greatly reducing light and oxidative damage and allowing the observation of exciton–exciton annihilation signatures under weak excitation flux. Fitting to a one-dimensional diffusion model, we find an average exciton diffusion constant of 55 ± 20 cm2/s, among the highest measured for an organic system. ...

Pressure weakens coupling strength in In and Sn elemental superconductors

The pressure dependence of the thermodynamic critical field Bc in elemental indium (In) and tin (Sn) superconductors was studied by means of muon-spin rotation/relaxation. Pressure enhances the deviation of Bc(T) from the parabolic behavior expected for a typical type-I superconductor, suggesting a weakening of the coupling strength α = kbTc ( is the average value of the superconducting energy gap, Tc is the transition temperature, and kB is the Boltzmann constant). As pressure increases ...

Tensile behavior of flax textile reinforced lime-mortar: Influence of reinforcement amount and textile impregnation

Companies and practitioners working in the civil construction sector are more and more aware and motivated to develop and adopt sustainable building materials, possibly obtained from renewable and locally available resources. As part of this common effort, special attention is being paid to an emerging class of materials generally referred to as bio-based composite systems. In this context, this paper investigates the mechanical properties of a Textile-Reinforced Mortar (TRM) system produced ...

Adsorptive decontamination of antibiotic-spiked water and milk using commercial and modified activated carbons

This study deals with the removal of antibiotics from contaminated water and milk using pristine and modified activated carbons (ACs) from various biomass sources. Pristine ACs exhibited good removal efficiency (RE) for various antibiotics from aqueous solutions and milk. To further enhance adsorption performance, a wood powdered activated carbon (WPAC) was modified by oxidation with H2O2under shaking (SK), ultrasonication (US) and microwave (MW) heating, as well as MW calcination. As a resul...

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