E3S Web Conf.
Volume 247, 2021International Conference on Efficient Production and Processing (ICEPP-2021)
|Number of page(s)||4|
|Published online||05 April 2021|
Applicability of the modified diatomite for treatment of wastewater containing heavy metals
1 Penza State Technological University, 440039 Penza, Russian Federation
2 Yuri Gagarin State Technical University of Saratov, 410054 Saratov, Russian Federation
The paper studies various modifications of diatomite, aiming at creating sorbents for wastewater purification from heavy metal ions. Diatomite of the Akhmatovskoe deposit of the Penza region was considered as a raw material. The processes of physical and chemical modification of diatomite were investigated. Adsorption isotherms were constructed, quantitative characteristics of adsorption of copper ions on the surface of modified sorbents were obtained. A chemical modification (acidic and alkaline) is proposed, which results in an increased adsorption capacity for heavy metal ions. The applicability of diatomite for the purification of highly concentrated wastewater containing heavy metals is shown.
© The Authors, published by EDP Sciences, 2021
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