Assessment of usability of industrial waste in construction of geochemical barriers

Antoninova, N.Yu.; Sobenin, Artem; Shubina, L. A.

doi:10.25018/0236-1493-2020-12-0-78-88

Cited by 4 publications

(2 citation statements)

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“…In addition, industrial waste can be used as natural geochemical barriers. Their repeated use as natural geochemical barriers to weaken the migration of heavy metals has a high potential for protecting soil and groundwater and is becoming a promising research area and method for protecting the ecosystem [13,14,15]. To protect the environment, it is possible to use specially created barriers, which are called artificial barriers.…”

Section: Methodsmentioning

confidence: 99%

With regard to the question about the use of artificial barriers in areas with man-made influence

Tsurik¹,

Kolomanich²

2021

J Appl Eng Science

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One of the ways to improve the environmental situation in various regions of the world has become the improvement of technologies for protection against hazardous pollution in soil, atmosphere, groundwater. The article is devoted to the analysis of the conceptual proposal within the framework of participation in the competition “Students reinventing cities. The promising methods of elimination and localization of environmental pollution using geochemical barriers are outlined. Examples of natural and artificial geochemical barriers are considered. Attention is drawn to the possibility of using anti-filtration screens as artificial barriers in areas with passive technogenic impact. The potential of using artificial barriers for the safe cultivation of plant crops at the former Payatas controlled waste disposal facility in Quezon City, Philippines is being identified. The importance of creating green spaces in the territory with limited opportunities for economic use is justified.

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Section: Methodsmentioning

confidence: 99%

With regard to the question about the use of artificial barriers in areas with man-made influence

Tsurik¹,

Kolomanich²

2021

J Appl Eng Science

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“…Continue research on the quality of the hydrogeological environment in the zone of influence of the UBL based on the data of hydrogeological monitoring of groundwater pollution [38]. The authors consider it expedient to construct semi-active water-permeable chemically active barriers (WPAB) and biological technologies for UBL by silting the bottom of the chamber for collecting productive solutions with clay solution [39,40].…”

Section: 3mentioning

confidence: 99%

Evaluation of efficiency and environmental safety of leaching metals from ore: ways of development and prospects

Lyashenko¹,

Khomenko

Chekushina

et al. 2021

TAPR

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The object of research is traditional mining technologies and technical means in combination with underground block leaching (UBL) of metals from rock ores with their preliminary crushing with explosives in installations mounted in mine workings. One of the most problematic areas is the difficulty of achieving a given crushing quality, as well as the required height of ore storage in the chamber for the subsequent leaching of metals and a loosening factor, taking into account the control of the energy of explosive destruction of rock ores. The study used: – data from literary sources and patent documentation in the field of technologies and technical means for UBL of metals from ores in energy disturbed massifs, substantiation of technological parameters of operational blocks; – laboratory and production experiments; – physical modeling of metal extraction from ores from the average linear size of a piece of blasted ore. Analytical studies, comparative analysis of theoretical and practical results using standard and new methods were carried out with the participation of the authors. It was found that the most intensive infiltration leaching occurs when the size class of ore lumps is –100+0 mm. Metals are extracted from fractions –200+100 mm less intensively and for a longer time. To neutralize and flush the spent ore mass, it is recommended to treat it with lime solution and mine water through wells for supplying leaching solutions (irrigation system). The protection of the hydrogeological environment is carried out by silting the bottom of the chamber for collecting productive solutions with clay solution and by constant monitoring of mine water pollution in the zone of UBL influence. On the basis of the positive results obtained from the study and implementation of technologies for UBL of metals from rock ores during the development of block 5–86, in accordance with the recommendations issued, the same approach was used for blocks 5–84–86 and 5–88–90, as well as industrial experimental block 1–75–79. Due to the involvement in the production of substandard ores, the raw material base for the extraction of metals, at the operating mines, can be increased by 1.4–1.6 times. The research results can be used in underground mining of ore deposits of complex structure in Ukraine, the Russian Federation, the Republic of Kazakhstan and other developed mining countries of the world.

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Evaluation of the efficiency and environmental impact (on subsoil and groundwater) of underground block leaching (UBL) of metals from ores

Lyashenko¹,

Голик

Klyuev

2022

Min.Sci.Technol. (RUS)

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One of the most problematic aspects of underground block leaching (UBL) of metals from ores is the possibility of pollution of water and air in the affected zone. Therefore, proving the possibility of mitigating environmental impact of metal leaching from ores by managing production processes with the implementation of nature- and resource-saving technologies is an important objective. The purpose of this study is to justify underground development effectiveness of ore deposits by traditional and integrated methods with leaching of metals from substandard and off-balance ores. This will allow the raw material base for extraction of metals from off-balance ores to be expanded and the environmental impact on subsoil and groundwater (hydrogeological systems) to be mitigated. A distinctive feature of a UBL (underground site for leaching of metals from shrunk ores) is that leaching solutions are supplied from sorption column placed in mining workings of the leaching level in the immediate vicinity of the extracting block. The pregnant solutions in the form of resin are discharged from the sorption column, placed in the leaching level mine workings, then winded in mine cars and further supplied to hydrometallurgical plant in tanks. A still rare attempt to justify the efﬁciency and environmental safety of underground metal leaching (UBL) from off-balance and substandard rock ores in installations mounted in mine workings, on the basis of monitoring and evaluation of subsoil and groundwater conditions was investigated. The average value of uranium concentration by level was established: 210 m – 3.6 mg/L; 225 m – 3.58 mg/L; 280 m – 0.91 mg/L. At the same time no contamination of underground mine waters was detected. Levels of sulfuric acid aerosols and radon decomposition products did not exceed the maximum allowable concentration (MAC) values. It is recommended that the hydrogeological environment be protected through silting the bottom of the stope for collection of pregnant solutions with clay mud and construct semi-active water-permeable chemically active barriers. The mentioned BIL process was implemented during the development of pilot block 5-86 and recommended for blocks 5-84-86 and 5-88-90 of Michurinskoye deposit of SE VostGOK, Ukraine, as well as during for development of ore deposits in Russia, Kazakhstan, and other developed mining countries.

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Assessment of usability of industrial waste in construction of geochemical barriers

Cited by 4 publications

References 0 publications

With regard to the question about the use of artificial barriers in areas with man-made influence

With regard to the question about the use of artificial barriers in areas with man-made influence

Evaluation of efficiency and environmental safety of leaching metals from ore: ways of development and prospects

Evaluation of the efficiency and environmental impact (on subsoil and groundwater) of underground block leaching (UBL) of metals from ores

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