Effect of limestone and dolomite tailings’ particle size on potentially toxic elements adsorption

Farmaki, Sofia; Vorrisi, E; Karakasi, Olga K.

doi:10.1515/geo-2018-0058

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…Good sorption properties of dolomite towards heavy metal cations, i.e., Pb, Cd, Zn, Cr, Cu, Sr, As, and Ba, have been confirmed by numerous studies [15,[17][18][19][20][21][22][23][24][25], including the author's study [3]. Examinations of the effect of dolomite grain size on the efficiency of the adsorption of heavy metal ions conducted by Farmaki et al [26] showed no significant relationship between their size and the level of sorption of pollutants. Therefore, when using fine-grained dolomite waste for the construction of physical and chemical barriers, it will not be necessary to grind or sieve it beforehand, which will greatly simplify the preparation of material for the construction of an isolation barrier and reduce the cost of technology.…”

Section: Introductionmentioning

confidence: 91%

The Effect of pH on Stability of an Isolation Barrier Made of Dolomite Post-Floatation Waste

Sobik-Szołtysek

2021

Minerals

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Dolomite post-floatation waste has been proposed as an alternative material for the construction of separation barriers. The aim of this study was to determine the effect of the pH of leaching solutions on the stability of such barriers. The present research included the determination of selected physical and chemical properties of waste, i.e., density, grain composition, and filtration coefficient. Column tests of leaching by solutions of different pH values modeling varying environmental conditions were performed. Selected ions were determined in the eluates. Grain analyses were carried out for the column material after leaching to determine the changes in grain composition of dolomite due to washing with leaching solutions. The determined value of the filtration coefficient is 6.52 × 10−9 m∙s−1, which confirms the impermeability of the waste. The material is fine-grained, with a grain diameter of d ≤ 200 µm. During leaching, a decrease in the content of the analyzed ions and the diameter of grains and their movement down the barrier, resulting in its sealing, was observed. The central part of all columns showed more grains with a diameter of 7 μm, which is probably due to secondary precipitation of CaSO4. Irrespective of the initial pH of the leaching solution, the reaction of all eluates obtained was slightly alkaline (pH 7.52–8.20). Dolomite post-floatation waste has properties that ensure the tightness and durability of the separation barrier, which, combined with its ability to alkalize solutions and the sealing process, ensures its effectiveness.

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Section: Introductionmentioning

confidence: 91%

The Effect of pH on Stability of an Isolation Barrier Made of Dolomite Post-Floatation Waste

Sobik-Szołtysek

2021

Minerals

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“…The hexagonal crystalline network of dolomite carbonate materials does not significantly affect the ecosystem due to its chemical composition. Farmaki et al (2018) highlighted that dolomite and carbonated materials pose no toxicity to marble and limestone. Thorough studies have demonstrated that dolomite powder contains Mono element solutions for surface complexation, ensuring its compatibility with these mineral resources.…”

Section: Possible Effects On Ecosystemsmentioning

confidence: 99%

Dolomite Beach as a Tourist Attraction in Manila as Perceived by Local Residents: Basis for Tourism Promotion

Perez,

Reynoso,

Salangsang

et al. 2024

IJMADIC

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Dolomite Beach, also known as Manila’s first man-made beach, is a fake sand beach formed through the process of nourishment on Manila Bay in Manila, Philippines. This is a new addition to Manila’s tourism industry. This study aims to make Dolomite Beach an effective tourist hotspot for Manila by increasing its significance and positioning it as a top attraction. It adopts a quantitative approach using Frequency Distributions, Weighted Means, and Standard Deviations through a descriptive study with 383 participants. Moreover, local residents had a high perception of Dolomite Beach as a tourist destination. The survey results show that, despite some initial controversy surrounding its construction, the majority of respondents favored of turning Dolomite Beach into a tourist attraction. The respondents felt excited when it was featured among the things to do in Manila for tourists. Many respondents expressed support for the establishment of an artificial white sandy beach in the city and looked forward to increased local and international tourism while providing more job opportunities for people who live in Manila. The benefits are many, not only for the residents of Manila but also for the overall community. The proactive involvement of residents, who are important players in the tourism industry, drives tourism growth. Therefore, this study shows that Dolomite Beach can be one of Manila’s leading tourist attractions.

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“…The leachate generated from red mud/bauxite tailings also contains high concentrations of inorganic cations along with sulfates, and chlorides [4]. Similarly, the leachate of dolomite tailings and limestone tailings contains high concentrations of calcium ions [5][6] and, potash mining leads to the generation of tailings having high concentrations of sodium and potassium ions [7]. Mining wastes are disposed in the form of slurry in engineered disposal facilities behind the dams [8][9].…”

Section: Introductionmentioning

confidence: 99%

Biopolymer-amended-kaolin as a Barrier for Tailing Disposal Facilities

Yadav

Venkata

2023

Preprint

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Mining waste in tailing storage facilities contains high ionic strength salts that pose a potential threat to the environment. Kaolin clays are receiving great interest recently for engineered barriers as minimal shrinkage cracks occur in these 1:1 clays. The present study evaluates the hydraulic, volume-change, diffusion, and retardation characteristics of kaolin clay and xanthan gum amended clay under the hydro-chemo-mechanical loading conditions pertinent to the mine storage applications. A biopolymer, Xanthan Gum, was explored to amend the kaolin for the application of barrier to address the environmental concern. The barrier design parameters for tailing disposal facilities such as diffusion and retardation characteristics, were evaluated using the through-diffusion experiment. Diffusion tests were conducted on the samples obtained from the hydraulic permeation tests under mechanical loading to simulate the field conditions. Theoretical concentration profiles for both kaolin and xanthan gum amended kaolin barriers were obtained by the numerical simulation of the advection-diffusion equation using the finite difference method. The xanthan gum improved the chemical compatibility, reduced the hydraulic infiltration rate, and reduced diffusion rates significantly. The results from the study suggested the suitability of xanthan gum amended kaolin barrier for attenuation of contaminants and as a sustainable alternative in tailing disposal facilities.

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Effect of limestone and dolomite tailings’ particle size on potentially toxic elements adsorption

Cited by 5 publications

References 21 publications

The Effect of pH on Stability of an Isolation Barrier Made of Dolomite Post-Floatation Waste

The Effect of pH on Stability of an Isolation Barrier Made of Dolomite Post-Floatation Waste

Dolomite Beach as a Tourist Attraction in Manila as Perceived by Local Residents: Basis for Tourism Promotion

Biopolymer-amended-kaolin as a Barrier for Tailing Disposal Facilities

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