Features of phytoextraction of rare earth elements by a complex of plants and microorganisms from technogenically polluted wastewater of mining enterprises

¹ SEC “Botanical Garden of National Research University “BelSU”, 85, st. Pobeda, Belgorod, 308015, Russia
² Laboratory of physical and chemical methods for plant research, 85, st. Pobeda, Belgorod, 308015, Russia
³ IFHE im. A.N. Frumkin RAS, 31, bldg. 4, Leninsky Prospekt, Moscow, 119071, Russia

^* Corresponding author: tretyakovmiy@gmail.com

Abstract

Rare earth elements are not always rare in their total mass, but their concentration in ores is usually so low that this limits the possibility of cost-effective extraction and enrichment for processing and use. At the same time, some rare earth elements accumulate as a by-product of mining ores containing, for example, copper, phosphates and iron. The article presents for the first time data on the accumulation of some rare earth elements in the tissues of phytoremediant plants Phragmites australis (Cav.) Trin. ex Steud., Typha angustifolia L., Typha latifolia L., used for the treatment of technogenically polluted wastewater from mining enterprises. The influence of the symbionts Bacillus subtilis strain DSM 32424, Bacillus amyloliquefaciens strain VKPM V-10642 (DSM 24614), Bacillus amyloliquefaciens strain VKPM V-10643 (DSM 24615), Bacillus subtilis 26D and Azotobacter vinelandii IB-4 on the efficiency of phytoextraction in different species of plants is considered. toremediants. The most effective symbiotic complexes of plants and microorganisms with a high phytoextractive ability to extract some rare earth elements have been identified.