Abstract
In this work, the specific features of formation of a composite material consisting of a mixture of low-melting ground glass and waste active sludge, which is used for sewage purification, have been considered. It has been established that, after low-temperature (600-700?C) short-term (30-60 min) treatment, specimens consist of a porous glass shell and a core saturated by carbon form. With change in temperature treatment conditions, the thickness and porosity of the shell and the size of the carbonized core change, leading to different absorption and adsorption properties. Due to the presence of a carbon-containing core, specimens absorb efficiently methylene blue (MB) from aqueous solution.
Highlights
Waste glass and waste active sludge are classified as large-scale anthropogenic waste, which are processed into a new type of materials in insufficient volumes
The temperature treatment of biowaste in air is accompanied by mass loss (Fig. 1) and a change in the color of the material from gray to brown, which is typical of red clay at the corresponding sintering temperatures
The shape of the wide electron paramagnetic resonance spectroscopy (EPR) signal somewhat changes, which indicates a certain reconstruction in the inorganic component of the biowaste–glass system
Summary
Waste glass and waste active sludge are classified as large-scale anthropogenic waste, which are processed into a new type of materials in insufficient volumes. Taking into account that, during thermodestruction of organic compounds under conditions of oxygen deficiency, the release of CO and CO2, and the formation of carbon occurs [22,23,24], the aim of the present investigation is to investigate the process of formation of a composite material based on porous glass and active carbon possessing sorption properties. It was assumed that the use of low-melting glass will help to find regimes of temperature treatment in air in which the appearance of glass melt will prevent the active interaction of formed carbon with oxygen of air. The formulation of this problem differs significantly from the problem of synthesis of only porous glass and is reduced to the development of the synthesis of samples consisting of a porous glass shell and carbonized core
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