Environment
Browse 60 curated documents about environment in The Archive — the 2RA-Edition digital library for engineering and scientific research. This collection of books, journal articles, theses, reports, and technical documents on environment spans extractive metallurgy, mining engineering, chemistry, and applied science. Every document is searchable in full text; sign in to read, download, ask AI questions about any document, or generate cited research drafts with the AI Researcher.
CLEAN AND EFFICIENT ROASTING SOLUTIONS WITH OUTOTEC’S CUTTING-EDGE TECHNOLOGY
A. Charitos, J. Hammerschmidt
A significant area of Outotec’s business involves fluidized bed roasting. With several decades of experience, more than 300 reference plants, and strong R&D capabilities, the company provides several industries with optimum processing solutions. Applications include oxidation and sulfation of sulfides found in copper, pyrite, and zinc concentrates. Gold production and de-arsenifying roasting are a
Design and Fabricate a Continuous Pork Roaster using Infrared Heating
Teerapot Wessapan, Theerapong Borirak
Roasted pork is a beloved dish across various cultures, yet the traditional roasting process can contribute significantly to environmental pollution through carbon dioxide and particulate emissions. This research aims to design and fabricate a continuous pork roaster employing infrared heating technology, intended for community enterprises, while ensuring efficiency and capacity within acceptable
HYDROCOPPER® FOR TREATING VARIABLE COPPER CONCENTRATES
L. Haavanlammi, K. Hietala
The Outokumpu HydroCopper® process is a chloride based atmospheric leaching process alternative that can treat a variety of different concentrates. Chalcopyrite and other copper sulfides can effectively be leached under atmospheric pressure in strong, aggressive chloride solution using copper (II) ions as oxidant. Impurities are removed from the solution as carbonates and ion exchange. Copper is p
Solution Mining A review
D. D. Rabb
This paper discusses solution mining, a method originally defined for the dissolution of soluble salts, which has evolved to encompass various techniques including heap leaching and in-place leaching. The objective is to review the expanded definition and application of solution mining, particularly for low-grade minerals and waste recovery. The methodology involves analyzing the chemical processe
Recovery and Utilization of Metallurgical Solid Waste
Yingyi Zhang
At present, a lot of metallurgical solid wastes have not been timely and effectively recycled, resulting in serious problems of environmental pollution and waste of resources. This book aims to address this issue by providing a comprehensive overview of comprehensive utilization technologies for metallurgical solid waste, including slag dry granulation, steel slag cement production, slag wool tech
Powering battery sustainability: a review of the recent progress and evolving challenges in recycling lithium-ion batteries
Panni Zheng, David Young
The global consumption of lithium-ion batteries (LIBs) has surged, presenting significant sustainability challenges related to their recycling and disposal. This review aims to synthesize recent progress in recycling technologies and to address the evolving challenges associated with lithium-ion battery waste. A comprehensive analysis of current recycling methods is conducted, highlighting advance
Extraction and Recovery of Metals from Spent HDS Catalysts: Lab- and Pilot-Scale Results of the Overall Process
Nertil Xhaferaj, Francesco Ferella
The present study proposes an overall recycling process for spent hydrodesulfurization (HDS) catalysts. The process put together stages already known in the technical literature, tested again with samples coming from the roasting stage in a pilot kiln, which is the most limiting stage of metal recovery from spent catalysts. These catalysts contain valuable metals such as cobalt (Co), molybdenum (M
Industrial Application of Large Rotary Kiln for Recovery of Vanadium from Vanadium Slag Added MnVO4 in Calcium Roasting Process
Jin WANG, Shaodong WANG
Calcification roasting has emerged as an effective and environmentally friendly method for extracting vanadium from vanadium slag. This study aims to examine the industrial application of a calcium roasting process in a large rotary kiln, emphasizing the role of manganese vanadate (MnVO4) in enhancing vanadium recovery. Methodologically, the research outlines the optimal conditions that enable rec
Effect of White Mud Addition on Desulfurization Rate of Molten Steel
TAE SU JEONG, MIN KYO OH
Fluorspar (CaF2) is commonly used to control the fluidity of slag in ladle-refining of steel. However, because it is desirable to reduce CaF2 consumption due to its environmental impacts, the industrial waste material such as white mud (WM) was investigated as a potential substitute for fluorspar. Steel samples were melted in a high-frequency induction furnace, followed by additions of ladle slag
End-of-Life Vehicle (ELV) Recycling: An international comparative study of end-of-life vehicle (ELV) recycling systems
Shin-ichi Sakai, Hideto Yoshida
End-of-life vehicles (ELV) have become a global concern as automobiles have become popular worldwide. An international workshop was held to gather data and to discuss 3R policies and ELV recycling systems, their background and present situation, outcomes of related policies and programs, the framework of recycling and waste management, and case studies on related topics in several countries and re
Unveiling the Bioleaching Versatility of Acidithiobacillus ferrooxidans
Luca Tonietti, Mattia Esposito
This study explores the bioleaching capabilities of Acidithiobacillus ferrooxidans, a bacterium known for its role in biohydrometallurgy. The objective was to investigate its versatility in metal recovery from various substrates. Utilizing a series of experimental setups, isolated strains of Acidithiobacillus ferrooxidans were subjected to different environmental conditions to assess their efficie
Advances in bioleaching of waste lithium batteries under metal ion stress
Xu Zhang, Hongjie Shi
In modern societies, the accumulation of vast amounts of waste Li-ion batteries (WLIBs) is a grave concern. Bioleaching has great potential for the economic recovery of valuable metals from various electronic wastes and has been successfully applied in mining on commercial scales. This review summarizes the advances in bioleaching of WLIBs, focusing on the effects of high concentrations of heavy m
Bioleaching Techniques for Sustainable Recovery of Metals from Solid Matrices
Leidy Rendón-Castrillón, Margarita Ramírez-Carmona
This review paper explores the potential of bioleaching as a sustainable alternative for recovering metals from solid matrices. With over 12 billion tons of solid waste annually worldwide, bioleaching provides a promising opportunity to extract metals from solid waste, avoiding harmful chemical processes. It explains bacterial and fungal bioleaching techniques that extract copper, gold, zinc, and
Review on Hydrometallurgical Recovery of Metals with Deep Eutectic Solvents
Guillaume Zante, Maria Boltoeva
Deep eutectic solvents (DESs) appeared recently as a new class of green designer solvents. The recovery of metals using hydrometallurgy is of major importance with the growth in metal demand. Several authors used these solvents for the hydrometallurgical recovery of metals from primary and secondary resources, and these studies are reviewed in the present work. Hydrophilic DESs can be used for the
A Brief Note on the Heap Leaching Technologies for the Recovery of Valuable Metals
Thriveni Thenepalli, Ramakrishna Chilakala
Heap leaching is a low-cost technology used in industrial mining to recover precious metals such as gold and uranium, along with several other highly sought after metals like copper, from their primary resources (ores and minerals). For many decades, there has been a growing demand for heap leaching due to its environmental benefits. Heap leaching provides mining operators with a benign, effective
Progress in bioleaching and its mechanism: a short review
Jyotilagna Dash, Ritesh Ojha
Bioleaching is an environmentally friendly and cost-effective technique for extracting metals from low-grade ores and waste materials. It uses microorganisms to dissolve metals through acidolysis, complexolysis, and redoxolysis, either directly or indirectly. While small-scale studies are conducted in shake flasks, larger applications include heap, vat, and tank systems. Bioleaching is promising f
Biosurfactants: An Overview of Their Properties, Production, and Application in Mineral Flotation
Carolina Rossini Simões, Matheus Willian Pereira da Silva
The quest for sustainable mining processes has directed research towards environmentally friendly alternatives to conventional beneficiation practices, with biosurfactants emerging as a viable option due to their lower environmental impact. This study reviews the application of biosurfactants as bioreagents in mineral flotation, exploring their production, their mechanisms of action, and the susta
Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes
Bernd Weber, Alma Chávez
Water treatment systems are essential for reducing environmental impacts and providing potable water to meet quality standards. This study aims to evaluate the effectiveness of a low-cost Cu-Sn6 catalyst compared to a noble Cu-Pd catalyst for the electrocatalytic removal of nitrates from contaminated water in both laboratory and continuous pilot settings. Utilizing saturated carbonic acid as the a
Effect of operational parameters and Pd/In catalyst in the reduction of nitrate using copper electrode
Thiago Favarini Beltrame, Vanessa Coelho
Water with high concentration of nitrate may cause damage to health and to the environment. This study investigated how concentration, current density, flow, pH, the use of Pd/In catalyst and operating mode (constant current density and constant cell potential) have an influence in the electrochemical reduction of nitrate and in the formation of gaseous compounds using copper electrode. Experiment
Replacement of Natural Sand in Concrete by Polyethylene Bottles
Sahil Verma, Sahil Arora
Presently a lot of attention has been taken on waste plastic materials which are generated in huge amounts all over the world. The main problem is the disposal of waste plastic material. In this research paper, an effort is made to use waste plastic crushed bottles of appropriate size in concrete with partial replacement of fine aggregates, which has the potential to dispose of large quantities of
Solvometallurgy: An Emerging Branch of Extractive Metallurgy
Koen Binnemans, Peter Tom Jones
This position paper introduces the reader to the concept of solvometallurgy, the term used to describe the extraction of metals from ores, industrial process residues, production scrap, and urban waste using non-aqueous solutions. The paper discusses the key unit operations involved in solvometallurgy, including solvent leaching, residue separation, leach solution purification using non-aqueous me
LOMINGO KAVULA HAGGITH 7
LOMINGO KAVULA HAGGITH
Cet article examine les impacts environnementaux du cycle de vie des batteries, en adoptant une approche Cradle-to-Grave et Cradle-to-Cradle. L'objectif est d'évaluer les effets écologiques à chaque étape du cycle de vie, y compris l'extraction des ressources, la fabrication, l'usage et la fin de vie. La méthodologie repose sur une revue des pratiques industrielles et des impacts environnementaux
Sustainability and Green Polymer Chemistry—An Overview
H. N. Cheng, Richard A. Gross
With increasing public awareness of climate change, environmental pollution, and earth’s declining resources, the concepts of sustainability and green chemistry have gained significant attention. This chapter provides an overview of selected polymer research areas that align with sustainability goals, particularly in the context of the 17 Sustainable Development Goals (SDGs) adopted by the United
Deep Eutectic Solvents in The Synthesis of Polymers
Masoud Mokhtary
This research focuses on the utilization of deep eutectic solvents (DESs) in the synthesis of polymers, addressing significant environmental concerns associated with solvent use in the polymer industry. The objective is to explore alternative reaction media that could minimize or eliminate organic solvents in polymer synthesis processes. The methodology involves analyzing the properties and format
Sustainable Solutions for Modern Economies
Rainer Höfer, Paul Anastas
This document presents a comprehensive overview of sustainable solutions for modern economies, highlighting the significance of integrating green chemistry principles into economic practices. The objective is to explore the innovative applications of sustainable methods in various industries, promoting ecological balance while achieving economic efficiency. Through a multidisciplinary approach, th
Sustainable development by new additives and resin systems
Rainer Höfer, Thorsten Roloff
Public construction and private housing have a significant impact on the landscape and environment, creating a notable responsibility for the paint and construction industries to preserve air and water quality. This article explores various additives and specialty resin systems that facilitate sustainable development within decorative architectural coatings and the construction sector. The objecti
Biomass-based Green Chemistry – sustainable solutions for modern economies
Joaquím Bigorra, Rainer Höfer
Renewable raw materials, specifically biomass, serve as a foundation for advancing industry towards the principles of green chemistry and sustainability. This paper aims to explore the potential of biomass as a viable alternative to fossil resources for energy generation and as a feedstock for industrial chemistry. Various forms of biomass, while essential for human nutrition and animal feed, can
Green chemistry—a sustainable solution for industrial specialties applications
Rainer Hofer, Joaquım Bigorra
This paper discusses the impact of wellness and sustainability mega-trends on consumer behavior and the manufacturing sector. The objective is to highlight the critical importance of sustainable practices in industrial applications, particularly through the lens of green chemistry. The methodology includes a review of historical consumption patterns and environmental impacts, emphasizing the signi
UTILISATION OF OIL PALM EMPTY FRUIT BUNCH ASH AS POTENTIAL NATURAL COAGULANT FOR PALM OIL MILL EFFLUENT TREATMENT
Nur Syahira Hisham, Zadariana Jamil
The palm oil mill industry generates massive wastes in solid and liquid forms such as Empty fruit bunches (EFB) and palm oil mill effluent (POME). These two wastes are high in fibre and organic content that may affect the environment and health without proper management. Thus, the recovery of these valuable resources from wastes is vital in order to reduce pollutions generated from palm oil produc
Toward N-nitrosamines free water: Formation, prevention, and removal
Peter Adeniyi Alaba, Yahaya Muhammad Sani
This study elucidates the recent trends in the formation, prevention, and removal of N-nitrosamines such as N-nitrosodimethylamine (NDMA) from wastewater or drinking water. Reports are rife on the occurrence of NDMA in areas such as amine degradation during postcombustion CO2 capture (PCC), chlorinated/chloraminated and ozonated drinking water, smoked or cooked foods, personal care, tobacco, and p
Preparation of the First Shipments of Transuranic Waste by the Los Alamos National Laboratory: A Rest Stop on the Road to the WIPP
Wander, S.G., Triay, I.R.
The Los Alamos National Laboratory (LANL) achieved a national milestone on the road to shipping transuranic (TRU) waste to the Waste Isolation Pilot Plant (WIPP) when it received certification authority on September 12, 1997. This paper describes the characterization of a non-mixed TRU waste stream, identified as waste stream TA-55-43 Lot No. 01, and the methods employed to ensure it does not cont
Optimizing High Level Waste Disposal
Dirk Gombert, Jay Roach
If society is ever to reap the potential benefits of nuclear energy, technologists must close the fuel-cycle completely. A closed cycle equates to a continued supply of fuel and safe reactors, but also reliable and comprehensive closure of waste issues. High level waste (HLW) disposal in borosilicate glass (BSG) is based on 1970s era evaluations. This host matrix is very adaptable to sequestering
NUCLEAR WASTE PROGRAMS SEMIANNUAL PROGRESS REPORT April---September
J. K. Bates, C. R. Bradley
This semiannual progress report summarizes activities carried out between April and September 1992 in the context of high-level radioactive waste management. The objective of the report is to outline the ongoing research and testing programs related to unsaturated glass behavior under radioactive conditions. Methodologically, the report details a range of tests and analytical studies, including cr
Research of the treatment of depleted nickel-plating electrolytes by the ferritization method
G. Kochetov, T. Prikhna
The research addresses the critical issue of protecting water resources from depletion and pollution, particularly regarding the toxic wastewater produced in galvanic industries. This study aims to evaluate the efficacy of the ferritization method for treating depleted nickel-plating electrolytes, which contain high concentrations of hazardous nickel compounds. A comprehensive methodology was empl
Enhancing the electrochemical Cr(VI) reduction in aqueous solution
Carlos Barrera-Díaz, Violeta Lugo-Lugo
In this study we present the cathodic Cr(VI) reduction using electrodissolution of iron anode. In batch experiments we tested four different cathodic materials; the best conditions were found when copper was used. It is observed that when more current is applied into the electrochemical cell faster reduction rates are achieved. Continuous experiments also reveal that Cr(VI) reduction could be done
Nickel recovery from the rinse waters of plating baths
G. Orhan, C. Arslan
An electrolytic process is applied to the de-metalization of rinse waters emerging from nickel-plating baths. The objective of this study was to investigate the optimum conditions for nickel recovery from these solutions. A series of experiments were conducted in a rotating packed cell (RollschichtzelleR), examining the effects of various parameters including the temperature and pH of the electrol
Nanofiltration of Acid Mine Drainage
H. Al-Zoubi, A. Rieger
Acid mine drainage (AMD) is recognized as one of the more critical environmental problems in the mining industry, with the potential of severe contamination of surface and groundwater, as well as soils. Different conventional methods are used to treat AMD such as lime neutralization, in which lime is added to AMD to raise pH and then precipitate the dissolved toxic heavy metals. In addition to a h
Membrane processes for the efficient recovery of anionic pollutants
Inmaculada Ortiz, Eugenio Bringas
The development of new “zero discharge” technologies which also permit the recovery of pollutant anions from industrial waste waters is a way of minimizing the cost of the processes and the impact on the environment. The kinetic behaviour of the removal and recovery of two different anionic pollutants is reported using membrane-based solvent extraction technologies: (1) recovery of hexavalent chro
Membrane engineering for environmental protection and sustainable industrial growth: Options for water and gas treatment
Adele Brunetti, Francesca Macedonio
The increasing demand for materials, energy and products drives chemical engineers to propose new solutions every day able to promote development while supporting sustainable industrial growth. Membrane engineering can offer significant assets to this development. Here, the most interesting aspects of membrane engineering in strategic industrial sectors such as water treatment, energy production,
Effectiveness of different biochar in aqueous zinc removal: Correlation with physicochemical characteristics
Nguyen Van Hien, Eugenia Valsami-Jones
Bochar from typical Vietnamese biomass residues (acacia wood chip, rice husk, bamboo) were assessed for application in remediation of metal-contaminated water. The biochar physical (e.g., surface area, morphology) and chemical (e.g. surface functional groups, proximate and elemental analysis) characteristics were correlated with their effectiveness in removing zinc (Zn2+). The impact of biochar do
A Comprehensive Study on the Effects of Noise Pollution
John Doe, Jane Smith
This study investigates the process of extracting metadata from academic documents, focusing on the development of a framework that can systematically identify and categorize various metadata elements. The objective was to enhance the efficiency and accuracy of metadata extraction to support scholarly communication and research discovery. Utilizing a combination of natural language processing tech
Chelation-Assisted Ion-Exchange Leaching of Rare Earths from Clay Minerals
Georgiana Moldoveanu, Vladimiros Papangelakis
The effect of biodegradable chelating agents on the recovery of rare earth elements (REE) from clay minerals via ion-exchange leaching was investigated, with the aim of proposing a cost-effective, enhanced procedure that is environmentally benign and allows high REE recovery while reducing/eliminating ammonium sulfate usage. A processing route employing a lixiviant system consisting of simulated s
LEACHING BEHAVIOUR OF THE RESIDUE FROM THE THERMO-MECHANICAL TREATMENT OF ALUMINIUM MELTING DROSS
Balázs Hegedüs, Tamás Kékesi
A large amount of currently useless basically oxide residue is produced by the treatment of dross obtained from the melting of alloyed aluminium scrap. Its negligible residual metallic component does not make it feasible for any further metallurgical processing. However, it may have a high content of chloride salts, which need to be removed not only for recycling purposes but also to make this res
Removal of nickel, copper, zinc and chromium from synthetic and industrial wastewater by electrocoagulation
Konstantinos Dermentzis, Achilleas Christoforidis
This research investigates the efficacy of electrocoagulation using aluminum electrodes for the simultaneous removal of nickel, copper, zinc, and chromium from synthetic aqueous solutions and actual electroplating wastewater. The study examines various parameters affecting the electrocoagulation process, including initial pH, current density, metal ion concentration, chemical oxygen demand (COD),
Study of the Use of Aluminum (Al) Electrodes in the Electrocoagulation Method for Reducing COD and BOD in Leachate Water
Meutia Nurfahasdi, Amir Husin
Electrocoagulation is an electrochemical method that uses sacrificial electrodes to remove wastewater. The most common electrode material is aluminum, which serves as both the cathode and the anode. The electrodes are connected in bipolar mode, and a power source is used to provide alternating current. Various operating parameters that can influence removal efficiency were investigated, including
STUDIES ON REMOVAL OF CYANIDE FROM AQUEOUS ENVIRONMENTS USING ALUMINUM ELECTRODES
Mohammad Reza Samarghandi, Mohammad Ahmadian
One of the most toxic compounds, cyanide, threatens human health and can enter the environment in different forms. Owing to its high ability to remove various contaminants from aqueous environments, the electrocoagulation process (ECP) is now considered an effective process. The aim of this study was to determine magnesium oxide nanoparticles (MgO) as a coagulant aid in ECP on the removal of cyani
Efficacy of Electrocoagulation Treatment for the Abatement of Heavy Metals: An Overview of Critical Processing Factors, Kinetic Models and Cost Analysis
Saif Ullah Khan, Mohammad Khalid
The electrocoagulation (EC) process introduces coagulants by electrochemical means and is widely adopted for removing heavy metals, alongside other contaminants, such as organic pollutants, suspended and dissolved solids, and colloidal materials. However, its efficacy can significantly vary depending on the operating conditions. This paper aims to provide an overview of the critical processing fac
Adsorption of arsenic on pre-treated zeolite at different pH levels
Flerida Mejia-Zamudio, Jesus Valenzuela-Garcia
Natural zeolites are widely utilized to mitigate the impact of pollutants, particularly in water sources affected by metals from mining and metallurgical processes. This study investigates the adsorption of arsenic on pre-treated zeolite at varying pH levels, with the objective of identifying optimal conditions for enhanced arsenic removal. Different samples of zeolite were subjected to treatment
ERD BioGaz
M. M.
This report discusses the data collected regarding the energy outputs of various stations in France over a specified period. The objective was to analyze the electrical output (in MW) and its percentage contribution to the regional energy grid. A comprehensive dataset was compiled, showcasing the energy input and output from different locations, including GRAND CENTRE, SUD OUEST, and IDF, between
In Suspicion of Thresholds
Tairan An, Pinar Kutluay
This article represents the third installment of a series that critically evaluates the intersections between legal frameworks and the built environment, derived from the 2021 Toolkit for Today seminar. The primary objective is to unravel the complexities of how legalities influence urban spaces and ecosystems. The methodology involves a multi-faceted analysis where Tairan An focuses on the hidden
Integrated Environmental Modelling: human decisions, human challenges
PIERRE D. GLYNN
Integrated Environmental Modelling (IEM) serves as a crucial mechanism for comprehending the intricate and dynamic ecosystems that sustain our natural resources and influence our environments. This paper aims to explore the impact of human behavior on the assembly and application of IEM in addressing societal challenges. The methodology includes identifying twelve cognitive biases that hinder the
Rare-earth elements in uranium deposits in the municipality of Pedra, Pernambuco, Brazil
Kennedy Francys Rodrigues Damascena, Romilton dos Santos Amaral
In the present study, soil and rock samples were collected from uranium deposits in the city of Pedra, Pernambuco, Brazil. These samples were analyzed using neutron activation analysis to identify the occurrence of rare-earth elements (REE). The most abundant elements found were Ce, Nd and La, with concentrations 12 times higher than the average in the earth's crust and 4.6 times higher than value
Release of Uranium by an Ore Treatment Unit at Caldas, MG, Brazil
Wagner de S. Pereira, Alphonse Kelecom
This study aims to assess the behavior of the release of Unat (i.e. uranium isotopes in natural relative abundance) from the release of water treated by the Ore Treatment Unit (UTM) in Caldas, state of Minas Gerais, Brazil, during the years 1999 to 2009. During this period, the unit showed no industrial activity, except between 2004 and 2005, when UTM operated 400 tons of monazite in a process to
Preliminary assessment of uranium mining legacy and environmental radioactivity levels in Sabugal region, Portugal
Fernando P. Carvalho, João M. Oliveira
An environmental radioactivity survey carried out in the Sabugal region, Portugal, showed enhanced radioactivity levels in surface water streams related to water discharges from old uranium mines. Water from irrigation wells in this region displayed variable radionuclide levels due to natural occurrence of radionuclides and to contamination by mine water drainage. Horticulture products grown near
Historical assessment of uranium release by the ore treatment unit – at Caldas, Minas Gerais, Brazil from 1999 to 2011
W. S. Pereira, A. Kelecom
The Ore Treatment Unit (OTU) located at the source of three rivers: Ribeirão das Antas, Ribeirão do Soberbo, and Córrego da Consulta, has been monitored for radionuclide release into the environment. This study aims to analyze the average annual uranium releases from the OTU over a historical period from 1999 to 2011. Weekly sampling was conducted at two points, 014 and 025, while point 076 underw
Epidemiological Study of the Effects of Uranium Mining Residues
F.P. Carvalho, M.J. Madruga
This study, part of the MinUrar project, investigates the radioactive contamination and exposure levels in areas affected by uranium mining and milling, focusing on implications for public health. The objective was to assess the presence of radioactive materials and their impact on local populations. Methodologically, the study involved multiple field sampling campaigns conducted in select countie
Environmental Impact of Uranium Mining and Ore Processing in the Lagoa Real District, Bahia, Brazil
ILSON G. CARVALHO, ROSA CIDU
Uranium mining and processing at Lagoa Real (Bahia, Brazil) initiated in 2000, prompting an investigation into its environmental repercussions. This study aimed to assess the hydrogeochemical quality of water resources in the area. Hydrogeochemical monitoring was conducted from 1999 to 2001, revealing generally satisfactory water quality inside and outside the mineralized zone, with no observed ch
ENVIRONMENTAL IMPACT ASSESSMENT OF A RADIOLOGICAL UNIT OF ORE PROCESSING, AT CALDAS, MG, BRAZIL
Wagner de S. Pereira, Delcy de A. Py Júnior
This study aims to estimate the radiological impact on the environment (RIE) from the release of water treated by the ore processing unit (UTM) at Caldas, MG, during the years 2005 and 2006. In 2005, the UMT operated 400 tons of monazite in a process to obtain rare earths; during the following year there was no industrial process. The effluent waters were tested once a week for points 014 and 025,
A code of practice to control TENORM impact of the non-uranium mining industry
Horst Monken Fernanndes, Elaine R.R. Rochedo
It is recognized that non-uranium mining and milling activities have the potential to cause undesired environmental impacts. These impacts can be observed during the operational and post-operational scenarios. A survey effort was developed to assess these impacts in several mining industries in Brazil. In each industry, the operational process was examined in detail, samples were collected at each
Application of the fundamental parameter method to the assessment of major and trace elements in soil and sediments from Osamu Utsumi uranium mine by WDXRF
Sabine Neusatz Guilhen, Marycel Elena Barboza Cotrim
Wavelength dispersive X-ray fluorescence spectrometry (WDXRF) is a suitable technique for the characterization of contaminated mining sites, providing a quick and reliable screening for areas of significant contamination. This study established and validated a non-destructive methodology for quantitative simultaneous determination of major and minor constituents in soil and sediments by WDXRF, whi