In the present study, different activated carbons were prepared from carbonized African beech wood sawdust by potassium hydroxide activation. The activated carbons were characterized by brunauer–emmett–teller, scanning electron microscope, fourier transform infrared spectroscopy, and thermogravimetric analyzer. The phenol adsorption capacity of the prepared carbons was evaluated. The d...

This paper aims to explore the production of porous Nb2O5 pellets by pressing and adding anaerobic biomass (sludge) in order evaluate microstructure porosity. The thermal treatment temperature varied between 300 ºC 900 ºC. Their structural, morphological, physical properties were measured, adsorption potential Mn2+ their reuse evaluated. All samples had a monoclinic phase. Density average value...

Simultaneous TG/DSC measurements performed on mixtures 2Li2CO3-5TiO2 (anatase) subjected to high-energy milling showed that both the temperature and the enthalpy of Li2CO3 decomposition are much lower than in the case of TG/DSC runs performed on a sample of a physical mixture. On the basis of the thermoanalytical evidence a solid-state synthesis of the spinel compound Li4Ti5O12 has been propose...

We investigate a system related to a particular isothermal gas-solid chromatography process, called “Pressure Swing Adsorption”, with two species and instantaneous exchange kinetics. This system presents the particularity to have a linearly degenerate eigenvalue: this allows the velocity of the gaseous mixture to propagate high frequency waves. In case of smooth concentrations with a general is...

Abstract Cellulose membrane (CM) was successfully prepared by phase conversion (L–S). The adsorption performance of CM for Pb( ii ) under different conditions investigated, and the isothermal models kinetic were established. Additionally, desorption also investigated. Scanning electron microscope (SEM), energy dispersion spectroscopy (EDS), Fourier transform infrared (FT-IR) methods used to eva...

Carbon emission is one of the main causes global climate change, thus it necessary to choose a low-carbon method in contaminated soil remediation. This paper studies adsorption ability ZVI on Pb(II) soils under different working conditions. The removal efficiency was 98% because suitable dosage, log reaction time and low initial solution concentration. whole balancing process much fast accordin...