Waste management in the mining industry of metals ores, coal, oil and natural gas - A review

Kalisz, Szymon; Kibort, Katarzyna; Mioduska, Joanna; Lieder, Marek; Małachowska, Aleksandra

doi:10.1016/j.jenvman.2021.114239

Cited by 90 publications

(25 citation statements)

References 114 publications

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“…Oil can be produced from traditional coal pyrolysis and coal-to-liquid (CTL) technologies above the ground, such as coal carbonization, direct coal liquefaction, and indirect coal liquefaction, which have been extensively investigated in the past few decades. − These well-known aboveground technologies also bring about possible environmental pollution and excessive semi-coke production, ,, such as particle matter emission, gaseous emission, and coking wastewater, which do not fulfill the requirements of energy security and carbon neutrality nowadays. Consequently, the underground in situ pyrolysis technology of tar-rich coal has been proposed recently.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Pyrolysis and Mild Oxidation Characteristics of Tar-Rich Coal via Thermogravimetric Experiments

Mao

Wang

et al. 2022

ACS Omega

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Tar-rich coal has the potential to substitute the supply of oil-gas resources, which is abundant in China. The effective conversion of tar-rich coal into oil-gas products can promote coal utilization, reduce resource wastage, alleviate environmental pollution, and benefit carbon neutrality. Nevertheless, less work, if any, has been performed on the pyrolysis and mild oxidation behaviors of tar-rich coal in Northwestern China. The influences of limited oxygen addition and an extremely low heating rate on the micromorphology of the residual semi-coke are yet to be fully understood. Here, an experimental study on the pyrolysis and mild oxidation characteristics of tar-rich coal was conducted by the thermogravimetric analysis method, with further elucidation of the physical–chemical properties of the residual semi-coke. Experimental results show that an increase in the ultimate temperature of pyrolysis leads to a decline in the residue mass, while the mass loss from 500 to 550 °C presents the maximum elevation. Volatile matter is inclined to discharge from a certain direction, and the pores formed in various directions hold different possibilities. The organic components undergo both pyrolysis and slow oxidation with limited oxygen in the heating medium. Compared with an inert atmosphere, the mass loss under conditions of a small amount of O 2 is brought forward but prolonged. Compared with a N 2 atmosphere, the oxidation reactions of tar-rich coal are weakened in the presence of CO 2 . A large decrease in the heating rate exerts an unfavorable effect on the production of total volatiles. An extremely low heating rate possibly brings about a change in the mechanism of chemical bond cracking during pyrolysis. More pores can be yielded in tar-rich coal with an increase in the heating rate, and the morphology of the residual semi-coke after pyrolysis is susceptible to the heating rate. The present study offers an improved understanding of the pyrolysis characteristics of tar-rich coal as well as insights into the efficient utilization of tar-rich coal.

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Section: Introductionmentioning

confidence: 99%

Investigation of Pyrolysis and Mild Oxidation Characteristics of Tar-Rich Coal via Thermogravimetric Experiments

Mao

Wang

et al. 2022

ACS Omega

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“…However, during its activity and development, this sector produces a significant environmental effect on the environment [ 7 ]. This environmental impact is mainly due to the alteration of the landscape [ 8 ], the influence on the territory [ 9 ], the emission of noise [ 10 ] and most importantly, the production of waste [ 11 ] and the impact on surface water and groundwater [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Reutilisation of Water Contaminated by Mining Waste for the Encapsulation of Potentially Toxic Elements

et al. 2022

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Mining activities are essential for a population’s development; however, they also produce negative effects such as the production of waste, an impact on flora and water pollution. On the other hand, construction is one of the sectors which is most demanding of raw materials, with one of the main such materials being water. For this reason, this research evaluates the feasibility of incorporating water contaminated by mining waste into ceramic materials for bricks. In this way, the use of water is reduced and, on the other hand, the contaminating elements of the mining water are encapsulated in the ceramic matrix. To achieve this, the clay used and the contaminated water were first analysed, then different families of samples were conformed with different percentages of contaminated water. These samples were tested to determine their physical and mechanical properties. At the same time, leachate tests were carried out to determine that the ceramic material created did not cause environmental problems. The test results showed that the physical and mechanical properties of the ceramics were not influenced by the addition of contaminated water. On the other hand, the leachate tests showed that encapsulation of most of the potentially toxic elements occurred. However, the use of contaminated water as mixing water for ceramics could only be performed up to 60%, as higher percentages would leach impermissible arsenic concentrations. Accordingly, a new way of reusing water contaminated by mining activities is developed in this study, taking advantage of resources, avoiding environmental pollution and creating economic and environmentally friendly end products.

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“…e challenges toward ZWC in resource-based areas are emphasized by previous studies [40][41][42]. However, most empirical research studies on performance assessment in China focus on pilot cities [43][44][45], and the approach to evaluate the performances of ZWC in resource-based areas is still a pending issue.…”

Section: Introductionmentioning

confidence: 99%

Measuring Zero-Waste City Performance of a Coal Resource-Based Area in China with MCDM Approach

Zhao

Yang

Duan

2022

Mathematical Problems in Engineering

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The zero-waste city is one of the most visionary initiatives for solving waste problems by enhancing the life cycle solid waste management system. However, the development level of ZW city construction remains unclear. Resource-based areas tend to produce large amounts of industrial solid waste, and achieving a zero-waste city is difficult due to insufficient resource utilization capacity. This study proposed a practical integrated MCDM approach to assess the performance of the ZW city and applied the approach to a typical coal resource-based province in China. The spatiotemporal characteristics and factors influencing the performance of zero-waste cities in each city were further explored. The performance levels increased during the study period; however, the growth rate of most cities is slow. Spatially, the performance levels of zero-waste cities gradually decreased from south to north, showing a radiation pattern with Taiyuan at its core. Challenges toward zero-waste city development were further identified, including heavy industrial structure, widespread underutilization of industrial solid waste, inadequate management of hazardous solid waste, low rate of urban domestic waste classification, and ineffective treatment. The approach gives a holistic and broader picture of the zero-waste management performance, which enables us to identify the challenges in promoting zero-waste cities.

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Waste management in the mining industry of metals ores, coal, oil and natural gas - A review

Cited by 90 publications

References 114 publications

Investigation of Pyrolysis and Mild Oxidation Characteristics of Tar-Rich Coal via Thermogravimetric Experiments

Investigation of Pyrolysis and Mild Oxidation Characteristics of Tar-Rich Coal via Thermogravimetric Experiments

Reutilisation of Water Contaminated by Mining Waste for the Encapsulation of Potentially Toxic Elements

Measuring Zero-Waste City Performance of a Coal Resource-Based Area in China with MCDM Approach

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