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- Article name
- Bottom sediments of wastewater treatment settling ponds system as a promising complex raw material
- Authors
- KRASAVTSEVA E. A., , Vandeleur2012@yandex.ru ; e.krasavtseva@ksc.ru, Laboratory of Nature-Inspired Technologies and Environmental Safety of the Arctic of the Federal Research Centre "Kola Science Centre of the RAS"; Institute of North Industrial Ecology Problems of the Federal Research Centre "Kola Science Centre of the RAS", Apatity, Murmansk region, Russia
SVETLOV А. V., , antonsvetlov@mail.ru, Institute of North Industrial Ecology Problems of the Federal Research Centre "Kola Science Centre of the RAS", Apatity, Murmansk region, Russia
MAKAROV D. V., , mdv_2008@mail.ru, Institute of North Industrial Ecology Problems of the Federal Research Centre "Kola Science Centre of the RAS", Apatity, Murmansk region, Russia
- Keywords
- suspended solids / sorbent / heap leaching / waste water treatment / copper / nickel
- Year
- 2021 Issue 1 Pages 12 - 16
- Code EDN
- Code DOI
- 10.52190/2073-2589_2021_1_12
- Abstract
- The results of a study of the chemical, mineralogical, granulometric composition of sediments formed by settled suspended solids from settling ponds of the wastewater treatment system and considers the potential use of the material as a complex raw material are presented. Leaching of pre-agglomerated suspensions with 2 % sulfuric acid using 30 % sulfuric acid as a binder in 90 days made it possible to extract 36 % of copper and 55.7 % of nickel. The sorption properties of fired granules made with the use of sulfite alcohol stillage (SSB) as a binder were also demonstrated in relation to copper and nickel ions. In the first few days of the experiment, it was possible to adsorb 68-73 % nickel and 90-92 % copper from the model solution supplied to the percolator. The possibility of obtaining a brucite-containing sorbent by hydrochloric acid opening of the initial material of suspensions and its use for purifying model solutions from fluorine ions with an efficiency of up to 62 % is shown.
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