Development of technology for obtaining sorbents from production waste

The article is devoted to the development and implementation of composite adsorbents based on industrial waste from the aluminum industry and anodic graphite material for wastewater treatment from toxic compounds, in particular, heavy metals. The existing problems of wastewater treatment related to the insufficient effectiveness of traditional methods, as well as the need to use innovative approaches, are considered. A process for obtaining adsorbents without binders is proposed, which allows changing their density and properties, adapting materials for various purposes such as sorption, thermal insulation and flocculation. The conditions of carbonization, volumetric and morphological characteristics of sorbents, their foaming and sorption properties are considered. Experimental studies have confirmed that by increasing the carbonation time, it is possible to increase the porosity and, consequently, the sorption capacity of adsorbents. Based on the data obtained, a scheme for wastewater treatment contaminated with petroleum products has been developed using a floating sorbent layer in pressure-bulk filters, which ensures compactness and efficiency. The ecological and economic importance of the technology is emphasized, which consists in reducing the cost of cleaning, reducing waste and minimizing the negative impact on the environment