Environmental hazard assessment of coal fly ashes using leaching and ecotoxicity tests

Tsiridis, V.; Petala, Maria; Samaras, P.; Κungolos, Α.; Sakellaropoulos, G.P.

doi:10.1016/j.ecoenv.2012.07.011

Cited by 57 publications

(40 citation statements)

References 36 publications

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“…As may be seen, constituents such as Zn, S, and Mn presented high mobility. As many studies have shown, the release potential of constituents from jarosite waste materials may vary depending on various physicochemical factors, such as pH, L/S (liquid/solid) ratio, the matrix of solid waste and the leaching type 16 . According to the results shown in , respectively.…”

Section: Leaching Tests Of Jarosite Samples With Deionized Water and mentioning

confidence: 99%

Environmental Hazard Assessment of Jarosite Waste Using Batch Leaching Tests

Ćurković

Bošnjak

Rezić

2018

Chem.Biochem.Eng.Q.

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Jarosite waste samples from Trepça Zinc Industry in Kosovo were subjected to two batch leaching tests as an attempt to characterize the leaching behavior and mobility of minor and major elements of jarosite waste. To achieve this, deionized water and synthetic acidic rain leaching tests were employed. A two-step acidic treatment in microwave digestion system were used to dissolve jarosite waste samples, followed by determination of Al, Ag, As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, P, Pb, S, Si, Sr, and Zn by inductively coupled plasma optical emission spectrometry (ICP-OES). The validation of the procedure was performed by the analysis of two geochemical reference materials, S JR-3 and S Jsy-1. Two toxicity leaching tests revealed a high metal releasing of Cd, Cu, Ni, Mn, Pb, Zn, and As, and the metal release risk for these elements is still very high due the low pH and acid rain. The statistical analysis showed useful data information on the relationship between elements in jarosite samples in two different extraction conditions (deionized water and synthetic acid rain).

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Section: Leaching Tests Of Jarosite Samples With Deionized Water and mentioning

confidence: 99%

Environmental Hazard Assessment of Jarosite Waste Using Batch Leaching Tests

Ćurković

Bošnjak

Rezić

2018

Chem.Biochem.Eng.Q.

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“…Plates are used to assess mortality and immobilization of crustaceans in solutions containing toxic substances. Daphtoxkit F magna test allows us to determine 24-and 48-hour acute toxicity in direct contact of test organisms with a tested sample [40][41][42][43][44].…”

Section: Steliga T Et Almentioning

confidence: 99%

“…Calculations of toxic effect (EC 50 ) can be done with a graphic method with the use of the enclosed sheet [40][41][42][43][44].…”

Section: Steliga T Et Almentioning

confidence: 99%

Analysis of Chemical and Toxicological Properties of Fluids for Shale Hydraulic Fracturing and Flowback Water

Steliga

Kluk

Jakubowicz

2015

Pol. J. Environ. Stud.

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Hydraulic fracturing of non-conventional (tight and shale) deposits is a controlled process of technological fluid injection into a deposit. The fluid consists mainly of water and chemical components ( Fig. 1) and the injection is done with high effectiveness (6-20 m 3 /min) with high pressureup to 100 MPa, which cracks rocks in a deposit and creates chains of cracks, or clefts.Further injecting the fluid results in propagation of cracks to a size determined in a technological project. After opening the crack, a proppant material (sand of proper granulation and mechanical strength) is added to the technological fluid and gets into the cracks and stops their closure. Simultaneously, it creates access for gas flowing to an excavation slot [1][2][3][4].Compositions of technological fluids used in hydraulic fracturing depend on the geological formation of a deposit and on the type of well (vertical or horizontal).During development of a fracturing fluid and selection of additives, the following factors should be taken into account: Pol. J. Environ. Stud. Vol. 24, No. 5 (2015), [2185][2186][2187][2188][2189][2190][2191][2192][2193][2194][2195][2196] AbstractAn analysis of environmental threats showed that the complete influence of shale gas production on the environment is bigger than in the case of gas production from a traditional oilfield. Hydraulic fracturing of shale, done on a much larger scale, results in huge amounts of liquid waste that must be managed in a rational way. An optimum solution to this problem is reusing flowback water to develop fluids for later fracturing. This article discusses the composition of the fluids used in hydraulic fracturing of non-conventional deposits as well as the flowback water. In the case of the examined liquids, toxicological tests have been carried out using microbiotests of ToxKit types Microtox, MARA, Daphtoxkit F magna, and Thamnotoxkit F. The research was done on a sample of fluids for hydraulic fracturing, and on flowback water obtained in hydraulic fracturing of shale formations in Poland. The tests are essential for correctly managing flowback waters after fracturing.

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“…In terms of energy production and energy consumption, China has formed a highly energy structure dependent on coal resources (Tsiridis et al, 2012). Before the 1960s, the proportion of coal in China's energy production and consumption structure remained above 90%.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Evaluation Model of Coal Safety Risk based on Entropy Weight Theory

2017

Revista de la Facultad de Ingeniería

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Coal is an important basic energy in China, and has an important strategic position in the national economy. Under the guidance of system theory, together with the comprehensive using of the principle and method of system engineering, this paper systematically analyzes the structural characteristics, influence factors, mechanism of the safety risk system of coal enterprise. At the same time, this paper establishes a comprehensive evaluation index system of coal mine safety and risk, and constructs comprehensive evaluation model of coal mine risk based on safety and risk index, as well as comprehensive evaluation model of coal mine safety based on entropy weight method and grey relational analysis; Besides, the practical research has performed on four coal mines in Su county Mine Area, Huabei Mining Group. The research results are of great theoretical and practical significance for the scientific countermeasures to improve the safety production of coal enterprises and to promote the fundamental improvement of the coal industry safety production situation.

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Environmental hazard assessment of coal fly ashes using leaching and ecotoxicity tests

Cited by 57 publications

References 36 publications

Environmental Hazard Assessment of Jarosite Waste Using Batch Leaching Tests

Environmental Hazard Assessment of Jarosite Waste Using Batch Leaching Tests

Analysis of Chemical and Toxicological Properties of Fluids for Shale Hydraulic Fracturing and Flowback Water

Comprehensive Evaluation Model of Coal Safety Risk based on Entropy Weight Theory

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