Results 51 to 60 of about 2,318,568 (392)

Rehabilitation of waste rock piles: Impact of acid drainage on potential toxicity by trace elements in plants and soil.

Journal of Environmental Management, 2020
The restoration of mining areas, in particular if they are located near towns or villages, is essential to reduce their potential risks for human health and to minimize their visual impacts.
P. Madejón, David Caro-Moreno, C. M. Navarro-Fernández, S. Rossini-Oliva, T. Marañón   +4 more
semanticscholar   +1 more source

Localized Sulfide Oxidation Limited by Oxygen Supply in a Full-Scale Waste-Rock Pile

Vadose Zone Journal, 2018
Open-pit mines produce large amounts of waste rock that is placed on-site, often in tall, mixed-composition piles. These waste-rock piles pose environmental risks because their weathering (i.e., sulfide oxidation) may generate acidic and metal-laden ...
Bas Vriens, Mélanie St. Arnault, Laura Laurenzi, Leslie Smith, K. Ulrich Mayer, Roger D. Beckie   +5 more
doaj   +1 more source

X-ray fluorescent study of the chemical composition of samples of rock dump

Технічна інженерія, 2020
The article provided an X-ray fluorescence study of the chemical composition of 2 rock samples taken from a rock dump using a bench-top X-ray fluorescence analyzer (XFA) – ElvaX Plus spectrometer.
I.I. Chobotko, S.V. Tynyna
doaj   +1 more source

Reactive transport modelling to investigate multi-scale waste rock weathering processes.

Journal of Contaminant Hydrology, 2020
Prediction of drainage quantity and quality is critical to reduce the environmental risks associated with weathering mine waste rock. Reactive transport models can be effective tools to understand and disentangle the processes underlying waste-rock ...
N. Seigneur, B. Vriens, R. Beckie, K. Mayer   +3 more
semanticscholar   +1 more source

Caracterização e classificação de resíduo sólido "pó de rocha granítica" gerado na indústria de rochas ornamentais Characterization and classification of granitic rock powder solid waste produced by ornamental rock industry

Química Nova, 2008
The ornamental rock industry generates huge amounts of wastes during the process of extraction and sawing of rock blocks. The ornamental rock powder waste is a non-biodegradable material, which represents the increase in environmental problem.
João Paulo Vargas Tavares Manhães, José Nilson França de Holanda   +1 more
doaj   +1 more source

Muti-scale analysis of solidification/stabilization (S/S) of Pb-contaminated dredged sediment using nano-SiO2 modified cement

Journal of Rock Mechanics and Geotechnical Engineering
The remediation of lead-contaminated dredged sediments (LDS) presents significant environmental challenges. This study investigates the solidification/stabilization (S/S) mechanisms of ordinary Portland cement (OPC) modified with nano-silica (NS) across ...
Wei Zhang, Lei Lang, Zhen Qi, Yao-Yi Wang, Qiang Xue, Jiang-Shan Li   +5 more
doaj   +1 more source

Anisotropic thermal properties of an argillaceous rock under elevated temperatures and external load conditions

Case Studies in Thermal Engineering, 2023
The design and long-term safety of geological repositories for high-level radioactive waste (HLW) are dependent on the precise determination of the thermophysical parameters of mudstone.
Hongdan Yu, Chen Lu, Wei Liu, Weizhong Chen, Honghui Li, Jiawei Huang   +5 more
doaj   +1 more source

Ceramic products obtained from rock wastes [PDF]

Journal of Materials Processing Technology, 2003
Abstract Residue powders resulting from cutting and machining operations in slate quarries were processed by a press and sintering route to manufacture ceramic products such as flooring and roofing tiles. The first part of this work consisted of a laboratory study carried out by uniaxially pressing the powders to shape and sintering in air using a ...
Catarino, L., Sousa, J., Martins, I. M., Vieira, M. T., Oliveira, M. M.   +4 more
openaire   +2 more sources

Energy Efficiency and Economic Aspects of Mining Wastes Utilization within the Closed Cycle of Underground Gas Generator [PDF]

, 2017
Energy efficiency of coal gasification with possible utilization of mining wastes within ecologically closed gas generator cycle has been considered.
CABANA, Edgar Cáceres, DYCHKOVSKYI, Roman, FALSHTYNSKYI, Volodymyr, PIVNYAK, Gennadiy   +3 more
core   +1 more source

Multi-scale interfacial mechanisms of Pb immobilization in contaminated soil using phosphoric acid-activated coal gangue-electrolytic manganese residue geopolymers

Journal of Rock Mechanics and Geotechnical Engineering
The accumulation of contaminated soils and solid waste stockpiles has led to significant resource wastage and environmental pollution. This study investigates a novel solidification/stabilization (S/S) curing agent, named ECPG, synthesized from ...
Wei Zhang, Lei Lang, Zhen Qi, Ping Wang, Qiang Xue, Fangqin Cheng, Jiangshan Li   +6 more
doaj   +1 more source