H2020Индивидуална стипендия2017–2019

GOSSAN · GOethite in Supergene Systems: ANalysing trace element substitution goethite and related iron oxides and oxyhydroxides.

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2017-10-01 → 2019-09-30
Финансиране от ЕС: 183 455 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Железните оксиди, като минерала гетит, се анализират за съдържание на примеси от ценни или токсични елементи като никел и живак. Това помага за определяне на икономическия потенциал на суровините и влиянието им върху околната среда и здравето.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

GOethite in Supergene Systems: ANalysing trace element substitution goethite and related iron oxides and oxyhydroxides.

The two years GOSSAN project (GOethite in Supergene Systems: ANalysing trace element substitution goethite and related iron oxides and oxyhydroxides) was aimed to the study of geochemical, morphological and structural composition of natural of iron oxides and oxyhydroxide in different types of Supergene Ore deposits (SOD). The main objective was the investigation of the behaviour of a range of economic metals commonly occurring in the primary ore deposits subjected to re-mobilization processes taking place during the weathering followed by their quantification within the natural oxides and oxyhydroxide, with major attention to the goethite. The main motivation for studying goethite as main mineral, is ascribable to several reasons: i) it is the most stable mineral among the Fe-oxi-hydroxides; ii) it is always present in the oxide zones of supergene ore deposits; iii) it is rarely pure: in fact, conspicuous amounts of cations isovalent or heterovalent to Fe3+ i.e. Ni, Zn, Co, REE, Sc, Ga, Ge, In, Pb, Hg, Mn, Cd, Si, Al etc. can substitute the Iron or be incorporated in the goethite structure (α-FeOOH). Some of the above mentioned metals were defined as “Critical Elements” by EU (https://ec.europa.eu/growth/sectors/raw-materials/eip_en/en/content/strategic-implementation-plan-sip-0), which remarked their importance in the new generation technologies and industrial development; on the contrary, other (i.e. Hg, Pb, Cd..) are considered as “problematic elements” in term of environmental and human health. Hence, an accurate knowledge of their behaviour, distribution and a systematically investigation on their occurrence in the mineral phases commonly present in SOD soils in addition to the definition of their economic potential is crucial for the modern and future society.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The GOSSAN project will provide a full and accurate study on the geochemical, morphological and structural composition of iron oxides and oxyhydroxide compounds, The attention will be focalized on goethite in different types of Supergene Ore deposits (SOD). More precisely, it is aimed to investigate the concentration, structural position and cationic exchange and economic potential of goethite as an unconventional source of “Critical Elements” (CE).Furthermore, the behaviour of the the goethite precursor phase (ferrihydrite) will be documented by assessment of the ions behaviour during maturation and transformation to goethite and finally hematite. The project will be developed in two years in which the reseacher will examine the mineralogy and geochemistry of many supergene samples of the NHM collections by the useof the analytical facilities provided by NHM. Ion exchange reactions will be assessed by experimental tests while the geochemical uptake of metallic trace elements will be studied by the use of TEM and Synchrotone XAS techniques. Furthermore, metallurgical treatments will be carried out on selected natural metal-bearing goethite specimens from different SOD in order to study the potential recovery of the metals trapped in the structure to assess the economic potential of iron oxides and oxyhdroxidesThe project also comprises a well-defined plan of training activities for the researcher in order to enhance its skills and help him to develop its future career as researcher.

Оригинален текст от CORDIS (на английски).

Участници

NATURAL HISTORY MUSEUM · LondonКоординаторОбединеното кралство