Rare-Earth Elements Recovery on the Example of Europium (III) from Lean Technogenic Raw Materials

Lobacheva, O. L.; Dzhevaga, N. V.

doi:10.12911/22998993/76827

Cited by 16 publications

(17 citation statements)

References 11 publications

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“…In the work of [30] the dependence of the level of development of innovations on GDP (gross domestic product) per capita and labor productivity was studied, where, according to the results of correlation and regression analysis, their direct dependence was found, although for an indicator of social efficiency (using the Gini coefficient as an example) dependence is defined as significant only for countries lagging behind in innovative development. The assessment of the actual level of development of innovations was not made there [29].…”

Section: The Choice Of Results Indicators For Assessing the Level Of Innovationmentioning

confidence: 99%

Assessment of Industrial and Financial Applications of Innovation Development

Shamsutdinov*,

Bochkovskiy,

Lebedvev

et al. 2020

IJITEE

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The purpose of this study is to make an analysis of indicators and methods used to calculate the Global Innovation Index (GII), which assesses the level of innovation development in a country . Within this index the shortcomings lead to overestimation for the developing countries . These indicators predominantly reflect not the achieved innovation development level, but‎the‎country’s‎potential‎to‎achieve it. The GDP (less than the resource rent ), calculated using the purchasing power parity and normalized per the number of people employed in a country, was chosen as baseline. In calculating the integral indicator (Ri), the baseline was adjusted‎for‎the‎country’s‎ competitiveness level and the Gini coefficient. The integral indicator values were derived for the selected states of OECD and BRICS (total of 38 countries) and the countries were ranked respectively . To substantiate the validity of the suggested methodology and the objectiveness of the assessment, a comparison with the estimates using the GII was carried out. It is offered to estimate the achieved innovation level by the outcome indicators, namely, by the indicators reflecting the attained level of social and economic development on the premise that this level has been reached due to innovation and these indicators‎are‎invariant‎to‎the‎countries’‎development‎level. The suggested methodology can be considered either separately in the process of assessing the innovation development level of a country or as a complementary to the assessment using the GII , which allows to analyze the country’s‎ prospects‎ in‎ terms of innovation‎proceeding‎from‎the‎‘attained‎level’.

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Section: The Choice Of Results Indicators For Assessing the Level Of Innovationmentioning

confidence: 99%

Assessment of Industrial and Financial Applications of Innovation Development

Shamsutdinov*,

Bochkovskiy,

Lebedvev

et al. 2020

IJITEE

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“…Besides, this method can be used for removal from wastewaters of oil admixtures and petroleum contained in the system [23]. The removal ratio of ion flotation when removing metal cations from the solutions of lean technogenic raw materials processing reaches 100% [30][31][32][33].…”

Section: Ion Flotationmentioning

confidence: 99%

The Removal of Rare-Earth Metals from Water-Salt Systems – An Innovative Aspect of the Modern Industry

Lobacheva¹

2021

Preprint

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Considering the ever-increasing role of rare-earth elements (REE) in the modern hi-tech field, their effective use has a tremendous significance, although the production process is inevitably linked to the large volumes of industrial ammonia effluents and heavy metal wastes. In the process of metallurgical separation of metals, the emission of large volumes of noxious gases and radioactive substances is inevitable. Lean technogenic raw material processing is sensible under the condition of the development of non-waste technology. The lack of competent regulations governing the disposal of waste containing REE has an impact on adjacent territories, accumulating in water bodies and, as a result, in the human body. Such an impact cannot pass without a trace, however, the ambiguity of opinions in the scientific community regarding the toxic effects of REE on living organisms determines the relevance of a more detailed study of this issue. The paper presents experimental and theoretical results of studies of ion flotation in the aqueous solutions containing ytterbium cations and a surfactant as a collector - sodium dodecyl sulphate (NaDS).

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“…Mineral deposits are generally the most important natural geological and geochemical stressors. However, in the vast majority of cases, data on the response of biogeochemical reaction of plants are obtained after geological exploration, or after mining has commenced [45][46][47][48]. In this section, we discuss information about the overall reaction of plants to the deposits themselves, and man-made changes associated with exploration and mining [49][50][51][52][53][54][55][56].…”

Section: Plants Of Explored and Mined Depositsmentioning

confidence: 99%

Element Accumulation Patterns of Native Plant Species under the Natural Geochemical Stress

Alekseenko

Shvydkaya

Alekseenko

et al. 2020

Plants

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A biogeochemical study of more than 20,000 soil and plant samples from the North Caucasus, Dzungarian Alatau, Kazakh Uplands, and Karatau Mountains revealed features of the chemical element uptake by the local flora. Adaptation of ore prospecting techniques alongside environmental approaches allowed the detection of geochemical changes in ecosystems, and the lessons learned can be embraced for soil phytoremediation. The data on the influence of phytogeochemical stress on the accumulation of more than 20 chemical elements by plants are considered in geochemical provinces, secondary fields of deposits, halos surrounding ore and nonmetallic deposits, zones of regional faults and schist formation, and over lithological contact lines of chemically contrasting rocks overlain by 5–20 m thick soils and unconsolidated cover. We have corroborated the postulate that the element accumulation patterns of native plants under the natural geochemical stress depend not only on the element content in soils and the characteristics of a particular species but also on the values of ionic radii and valences; with an increase in the energy coefficients of a chemical element, its plant accumulation decreases sharply. The contribution of internal factors to element uptake from solutions gives the way to soil phytoremediation over vast contaminated areas. The use of hyperaccumulating species for mining site soil treatment depends on several external factors that can strengthen or weaken the stressful situation, viz., the amount of bedrock exposure and thickness of unconsolidated rocks over ores, the chemical composition of ores and primary halos in ore-containing strata, the landscape and geochemical features of sites, and chemical element migration patterns in the supergene zone.

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Rare-Earth Elements Recovery on the Example of Europium (III) from Lean Technogenic Raw Materials

Cited by 16 publications

References 11 publications

Assessment of Industrial and Financial Applications of Innovation Development

Assessment of Industrial and Financial Applications of Innovation Development

The Removal of Rare-Earth Metals from Water-Salt Systems – An Innovative Aspect of the Modern Industry

Element Accumulation Patterns of Native Plant Species under the Natural Geochemical Stress

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