Assessment of emissions of trace elements and sulfur gases from sulfide tailings

Бортникова, С Б; Yurkevich, Nataliya; Abrosimova, Natalya; Devyatova, Anna; Edelev, Alexei; Makas, A. L.; Troshkov, M. L.

doi:10.1016/j.gexplo.2017.12.008

Cited by 19 publications

(12 citation statements)

References 56 publications

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“…A key source of information for the assessment of AMD potential is the estimation of the emissions of trace elements and sulfur gases from sulfide tailings, typically by using geochemical, mineralogical, and geophysical (electrical resistivity tomography) techniques [14][15][16]. It has been established that air streams over the sulfide tailings of the Komsomolsk gold extracting plant (tailings substance breathing) contain complex mixtures of sulfur-containing gases, which are capable of carrying many chemical elements.…”

Section: Introductionmentioning

confidence: 99%

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Gas Transfer of Metals during the Destruction of Efflorescent Sulfates from the Belovo Plant Sulfide Slag, Russia

et al. 2019

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This paper demonstrates the results of experiments for the determination of the composition of gases during the dehydration of sulfates (Na-jarosite, melanterite, and chalcanthite) collected at the surface of pyrometallurgical waste heaps. The volatilization of various elements, and vapor–gas phase transport from three sulfate groups were investigated by stepwise laboratory heating at 45, 55, and 65 °C. The sample of yellow efflorescence mainly consisted of Na-jarosite, the white efflorescence contained melanterite as the major mineral, and the blue efflorescence sample consisted of chalcanthite. These all contained a few impurities up to 5 %. The highest total dissolved solids (TDS) was found in the gas condensates from melanterite (59 mg/L), followed by chalcanthite (29 mg/L) and Na-jarosite (17 mg/L). It was determined that major and trace elements in the condensate can be trapped by water vapor and can migrate with the vapor phase during the desorption and dehydration of hydrous sulfates. X-ray diffractograms showed that Na-jarosite remained stable throughout the temperature range, whilst the separation of melanterite’s structural water occurred at 40 °C, and chalcanthite completely lost two water molecules at 50 °C. The gas condensates contained acetates and formates, which could be the fermentation products of bacterial communities. Some of the strains—Micrococcaceae sp., Bacillus sp., and Microbacteriaceae sp.—were cultivated.

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Section: Introductionmentioning

confidence: 99%

“…It was established that air streams over sulfide tailings are complex mixtures of sulfur-containing gases, which are capable of carrying many chemical elements [14][15][16]. The mechanism of element migration in ambient conditions was proposed [16].…”

Section: Introductionmentioning

confidence: 99%

Gas Transfer of Metals during the Destruction of Efflorescent Sulfates from the Belovo Plant Sulfide Slag, Russia

et al. 2019

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“…However, the concentration of Fe is much lower than we would expect. Low mobility of Fe in comparison with other metals was noted previously [8][9]. Trace elements such as Ba, Sr, Al, As, and others are determined in condensates in measurable concentrations.…”

Section: Resultsmentioning

confidence: 80%

“…Recently, there has been increasing interest in the use of salt hydrates as thermochemical heat storage materials [5][6]. Another important direction in the research of secondary mineral dehydration is chemical element transport in the vapor streams [7][8][9]. The purpose of this work was to deter-mine the composition of the vapor-gas mixture separated from sulphate minerals during heating.…”

Section: Introductionmentioning

confidence: 99%

Transfer of chemical elements in vapor-gas streams at the dehydration of secondary sulfates

et al. 2019

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The elemental composition of vapor-gas streams obtained during heating of secondary hydrous sulfates are presented. Samples of abundant sulfate intergrowth were collected at the Belovo waste heaps and heated at 60ºC in experiments to collect condensates of the releasing vapor-gas streams. A wide spectrum of major and trace elements was determined in the condensate. Chemical elements can be absorbed by the water vapor and migrate with this phase during the dehydration of hydrous sulfates. To determine the mechanisms of migration and the sources of elements in vapor-gas streams, a study of the features of certain hydrous sulphates (antlerite, goslarite, starkeyite, gunningite, siderotile, sideronatrite) by stepwise heating up to 60ºC was conducted. Alteration in the phase composition is controlled by powder X-ray diffractometry. It was determined, that antlerite and starkeite remain stable throughout the temperature range. The beginning of the separation of structural water in goslarite and siderotile occurs at 40°C. Goslarite and sideronatrite at 40°C lost water molecules and transformed to gunningite and Na-jarosite, correspondingly. Structure of siderotile was loosened. The modes of occurrence of the chemical elements in sulfates and pore solution determine the concentrations of elements in the condensates.

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“…Обнаружение измеряемых количеств элементов поглотителях, куда элементы поступают из воздуха, ставят вопрос об источниках элементов в эмиссионных потоках. Предположительно, ими могут быть как межпоровые растворы верхних горизонтов отвалов, так и вторичные неустойчивые соединения -водные сульфаты разных элементов (кристаллогидраты), способные разрушаться при невысоких температурах [14].…”

Section: результатыunclassified

Composition of Gas Streams Over the Sulfide Mining Tailings

Бортникова¹,

Yurkevich²,

Devyatova³

et al. 2018

The Geological Evolution of the Water-Rock Interaction

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АННОТАЦИЯ: В статье рассматривается возможность переноса широкого круга химических элементов низкотемпературными газовыми потоками от складированных сульфидных отходов обогащения руд. На основе полевых экспериментов по прокачкам воздуха через поглотитель и сбору конденсатов показана разница между составом воздуха в фоновой точке и на хранилище. Предполагается, что источниками элементов в воздухе могут быть межпоровые растворы верхних частей хранилищ и неустойчивые вторичные сульфаты при их дегидратации. Проведённые лабораторные эксперименты по сбору конденсатов от растворов (водных вытяжек) и сухого твёрдого вещества отвалов свидетельствуют, что каждый из этих источников вносит свой вклад в состав воздушной среды. Соотношения концентраций элементов в водных вытяжках и конденсатах имеют высокий коэффициент корреляции, что определятся связью с двумя основными источниками: поровыми растворами и вторичными сульфатами.

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Assessment of emissions of trace elements and sulfur gases from sulfide tailings

Cited by 19 publications

References 56 publications

Gas Transfer of Metals during the Destruction of Efflorescent Sulfates from the Belovo Plant Sulfide Slag, Russia

Gas Transfer of Metals during the Destruction of Efflorescent Sulfates from the Belovo Plant Sulfide Slag, Russia

Transfer of chemical elements in vapor-gas streams at the dehydration of secondary sulfates

Composition of Gas Streams Over the Sulfide Mining Tailings

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