Heavy metals
Browse 60 curated documents about heavy metals 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 heavy metals 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.
Small WEEE Determining recyclables and hazardous 2009 Journal of Hazardous
Emmanouil Dimitrakakis, Alexander Janz
An examination regarding the determination of recyclables and hazardous substances in small waste electrical and electronic equipment (WEEE) found in the residual household waste stream of the city of Dresden, Germany, is described. Firstly, attitudes towards the disposal of small WEEE in the latter are assessed, and product types and categories which mostly contribute to its composition are ident
Pollutants Release and Control during WEEE Recycl 2016 Procedia Environmenta
Lingyu Sun, Xianlai Zeng
With the rapid development of science and technology especially in the ICT industry all over the world, WEEE has been considered to be one of the most important waste streams during the last decade and will continue to be so in the future. WEEE contains valuable metals as well as potential environmental contaminants so recycling E-waste is an indirect way to reuse valuable resources. In case that
Intercropping with sunflower and inoculation with arbuscu 2019 Ecotoxicology
Yu Zhang, Junli Hu
Heavy metal (HM) pollution in agricultural soils due to the recycling of waste electrical and electronic equipment (WEEE) has become a serious concern, but most farmers cannot afford the economic losses of fallow land during remediation. Thus, it is imperative to produce low-HM crops while remediating the contaminated soils. A 17-week pot experiment was conducted to investigate the growth and HM (
Arbuscular mycorrhizal fungi alleviate the heavy metal toxic 2018 Science of
Yu Zhang, Junli Hua
This study investigates the role of arbuscular mycorrhizal (AM) fungi in mitigating heavy metal toxicity on sunflower (Helianthus annuus L.) grown in heavily contaminated soil from a waste electrical and electronic equipment (WEEE) recycling site. An 8-week pot experiment was conducted using two types of soil: heavily metal-contaminated (H) and lightly metal-enriched (L). Results showed that the H
Recovery of Valuable Metals by Roasting of Jarosite inCement Kiln
Hui Ge, Zhigang Pan
The jarosite residue is a harmful byproduct of the zinc hydrometallurgical process and has been classified as hazardous waste due to its high content of heavy metals and poor stability. In this work, the recovery of valuable metals by synergistic disposal of jarosite residue with cement kiln has been investigated. A series of investigations were undertaken to assess the effect of amount of jarosit
Historical Lead Smelting Slag Harmlessness and Valuable Metals Recovery: A Co-Treatment of Lead Slag and Zinc-Bearing Material in Rotary Kiln
Xuekui Niu, Minting Li
The harmless treatment of historical lead smelting slag (LSS) is of significance to ecological and environmental protection, but it is still challenging in terms of the economic feasibility of alone processing due to the low content of valuable metals. Here, we performed an industrialized test with a co-treatment of LSS and zinc oxide ore in a rotary kiln to evaluate the economic feasibility and s
Uranium Ions Removal Using Amberlite CG-400 Anion Exchanger Resin in the Presence of Sulfate Anions
M. Kosari, H. Sepehrian
This study investigates the uptake of uranium (VI) ions using an anion exchanger resin, Amberlite CG-400, in the presence of sulfate anions. The objective was to analyze the impact of various parameters, including pH, contact time, initial concentration of uranium ions, and interference from different anion species (phosphate, chloride, sulfate, nitrate, and fluoride) on the sorption performance o
Extraction of uranium from nuclear indus
S. K. Satpati, S. Pal
Solid-phase extraction process using chelating sorbent is a novel technique due to its high separation efficiency and simplicity. A designed three-dimensional cross-linked hydrophilic chelating polymeric sorbent, polyacrylhydroxamic acid, was developed for enhanced uptake of uranium from waste solution (pH 6–9) by complexation between the sorbent’s active functional group and uranium. The sorbent
Monitoring of sulfate reducing bacteria
J.S. Benedetto, S.K. de Almeida
One of the most serious environmental problems created by the mining industry is acid mine drainage, particularly concerning the Nuclear Industries of Brazil (INB). This research investigates the treatment of acid water from uranium mines using sulfate-reducing bacteria (SRB), which has shown technical and economic benefits in other countries. A seasonal study was conducted to monitor the presence
Oxides of Heavy Metals
F. T. DAVIS, S. ZAMAN
This section deals with the oxides of heavy metals, specifically columbium and tantalum, rare earths, chromium, manganese, titanium, tin, and tungsten. The objective is to provide a comprehensive overview of these commodities, including their production figures and specifications in 1977. The methodology involves summarizing data regarding the common commercial minerals associated with these commo
Air Quality Benefits From Implementing Best Available Techniques in Copper Mining and Smelting Complex Bor (Serbia)
Vladanka Presburger Ulniković, Sanja Mrazovac
Since 2016, the impact of the best available techniques (BAT) on air quality in Bor is significant. Its performance is presented by the air quality assessment with respect to the average annual sulfur dioxide (SO2) emitted concentrations and the total SO2 volume emitted per year from the smelter and sulfuric acid plant, relative to the quantity of processed concentrate in the period when productio
Multi criteria ranking of copper concent
Djordje Nikolic´, Ivan Jovanovic´
The results of multi-criteria ranking of copper concentrates by their quality, according to their content of useful and harmful components, are presented in this paper. Cu, Ag and Au were taken as useful components, while Pb, Zn, As, Cd, Hg, Bi and Sb were considered as harmful with adequate weight parameters. Considering its specific role in copper metallurgy, sulfur in the concentrate was consid
Multi criteria Decision Making Models in
Anna Król, Magdalena Jurczyk-Bunkowska
The paper presents a specific model used for the assessment and selection of the method of heavy metals leaching from waste materials. A recommendation for the rational selection of leachability method was made, taking into account the crucial parameters affecting the leaching process derived from the authors' research experience. The assessment models were supplemented with characteristics relati
Multi criteria analysis of soil pollutio
DJORDJE NIKOLIĆ, NOVICA MILOŠEVIĆ
This study highlights the consequences on soil pollution of one hundred years of manufacturing in the Copper Mining and Smelting Complex RTB-Bor (Serbia). Soil sediments were taken via a probe from the surface layer of the soil at twelve different measuring points, all within 20 km of the smelting plant, which included both urban and rural zones. Soil sampling was performed using a soil core sampl
Application of full factorial design to study the simulta 2013 Desalination
T. Berrama, N. Benaouag
The aim of this study is to investigate the simultaneous removal of zinc and copper from aqueous solutions by liquid–liquid extraction using a systematic statistical method. This study is conducted in two steps: firstly, preliminary extraction tests are performed to determine optimal operational conditions, including equilibrium time of 15 minutes and a pH range between 4.5 and 6.5. Secondly, a fu
Recent progress in advanced functional materials for adso 2025 Coordination
Muruganantham Rethinasabapathy, Seyed Majid Ghoreishian
Water pollution jeopardizes environmental ecosystems and human health. The presence of cobalt ions (Co2+) and radionuclides (60Co) in industrial and radioactive effluents pose serious threats to environmental ecosystems and human health. Thus, removing Co2+ and 60Co from wastewater is essential for environmental and health reasons. Many techniques have been used to remove heavy metal ions and radi
2026 Guo Stabilized rare earth tailings leaching characteristics
Zhongqun Guo, Xi Cao
Ion-adsorbed rare earth mining generates extensive tailings sites with compromised structural integrity and heavy metal contamination. This study employed microbially induced carbonate precipitation (MICP) with Sporosarcina pasteurii to solidify and stabilize ion-adsorbed rare-earth tailings. The effects of treatment method, cementation solution (CS) concentration, and heavy metal contamination le
2026 Baumgartner CrVI Emissions Ferrochrome Slag Stockpiles
Shana Joy Baumgartner, Alexey V. Cherkaev
Ferrochrome alloy production is associated with significant environmental burdens, including the generation and management of waste slag. Improper slag management poses risks to human health, terrestrial ecosystems, and aquatic life through the leaching of heavy metals such as chromium. Life cycle assessment (LCA) is a recognized method for evaluating emissions to support holistic environmental de
2026 Soylu Microwave Volatile Metal Recovery
EDZHE SOYLU, GABRIELLA TRANELL
This study evaluates the thermal behavior, dielectric properties, and metal volatilization potential of municipal solid waste incineration (MSWI) fly ash (FA) and air pollution control (APC) residues under microwave heating. Thermogravimetric analysis (TGA), combined with mass spectrometry (MS), and dielectric property measurements were employed to examine decomposition mechanisms and microwave ab
Enhanced detoxification and valuable metal extraction from electroplating sludge via ultrasonic-assisted ferric sulfate bio acid
Mehrdad Kordloo, Nima Jafari
Electroplating sludge (ES) is a hazardous waste containing toxic heavy metals, yet it is also a valuable secondary source of metals, necessitating its recycling for environmental and economic benefits. This study presents an innovative ultrasonic-assisted ferric sulfate bio acid (FSBA) process aimed at extracting chromium (Cr), copper (Cu), and nickel (Ni) from ES. The bacterial supernatant of Aci
Removing heavy metals and improving the dewaterability of sewage sludge with the bioleaching process by Thiobacillus Ferrooxidans bacteria
Reza Shokoohi, Roya Najafi‑Vosough
Bioleaching technology is being developed as a cost-beneficial and environmentally friendly strategy for the removal of metal ions from sewage sludge. Therefore, this study aims to evaluate the feasibility of bioleaching process for the removal of heavy metals (Pb, Al, Zn, and Cu) from sewage sludge using indigenous iron-oxidizing microorganisms. For this purpose, 10 mL of a sludge-enriched inocul
2020 Rouchalova Bioleaching metals from mining sludge
Dana Rouchalova, Kamila Rouchalova
Globally, the amounts of metal ore deposits have been declining, so the research directions investigating the extraction of metals from materials that are classified as waste are gaining more importance every year. High concentrations of Cu, Pb, Zn, and Fe were analyzed in the sludge sediment (Zlaté Hory, Czech Republic), which is a waste product of the mining industry. In the bioleaching process,
The Confluence of Heavy Metal Biooxidation and Heavy Metal Resistance: Implications for Bioleaching by Extreme Thermoacidophiles
Garrett Wheaton, James Counts
Extreme thermoacidophiles (Topt > 65 °C, pHopt < 3.5) inhabit unique environments fraught with challenges, including extremely high temperatures, low pH, as well as high levels of soluble metal species. In fact, certain members of this group thrive by metabolizing heavy metals, creating a dynamic equilibrium between biooxidation to meet bioenergetic needs and mechanisms for tolerating and resistin
2026 Kim Selective chromium recovery from electroplating sludge
MYUNGSUK KIM, BURHAN FEBRINAWARTA
Electroplating sludge (ES) is a hazardous waste containing valuable metals such as chromium (Cr), nickel (Ni), and copper (Cu). This study aimed to investigate the selective recovery of Cr from ES through alkaline roasting coupled with water leaching. A thermodynamic analysis revealed that the conversion of Cr(OH)3 to Na2CrO4 is possible at the solid-gas-alkali interface. The effects of various pa
Analysis of copper losses throughout wea
Dragana Ivšić-Bajčeta, Željko Kamberović
The previous inadequate treatment of off-gas in RTB Bor in Serbia has resulted in serious pollution of the environment and the possibly high losses of copper through the effluent flows. The project of New Copper Smelter RTB Bor, besides the new flash smelting furnace (FSF) and the reconstruction of Pierce-Smith converter (PSC), includes more effective effluent treatment. Paper presents an analysis
Recycling of Date Pits Into a Green Adso
Khalid Al-Saad, Marwa El-Azazy
This study explores the recycling of date pits (DPs) as a cost-effective adsorbent for the removal of selected heavy metals (HMs) from artificially contaminated aqueous solutions. The research aims to assess the efficacy of raw date pits (RDP) and burnt date pits (BDP) in adsorbing targeted heavy metals, with findings indicating that BDP is significantly more efficient, particularly for the absorp
Biosorption and Bioleaching of Heavy Metals from Electronic Waste Varied with Microbial Genera
Preetiman Kaur, Shivani Sharma
Industrialization and technological advancements have led to the exploitation of natural resources and the production of hazardous wastes, including electronic waste (E-waste). The traditional physical and chemical techniques used to combat E-waste accumulation have inherent drawbacks, such as the production of harmful gases and toxic by-products. These limitations may be prudently addressed by em
Removal of Heavy Metals from Water: Technological Advances and Today's Lookout Through Membrane Applications
Pallavi Mahajan-Tatpate, Supriya Dhume
Water contamination by heavy metals poses significant environmental challenges, leading to severe health issues such as gastrointestinal disturbances and potential long-term diseases like cancer. This research aims to explore effective methods for the removal of heavy metals from water, focusing on membrane-based technologies due to their sustainable and environmentally friendly characteristics. A
Opportunities and challenges in supported liquid membrane technology for heavy metal extraction and recovery: a review
Lai Yee Lee, Norhashimah Morad
The present paper is an extended review on supported liquid membrane (SLM) for extraction and recovery of heavy metals, followed by the problems encountered during implementations and its potential outlooks for future applications. SLM technology integrates the processes of extraction, transport and re-extraction of heavy metals in a single continual system and has been proven with promising poten
Bioleaching of Metals from Wastes of Pho
Akmaral U. Issayeva, Radosław Pankiewicz
Phosphorus-containing wastes formed after the production of phosphorus fertilizers in Shymkent, due to intensive urbanization were within the city limits and for reason of processes of water-wind erosion began to pose a serious threat to the environment and the population of the city. It was found that the formation of the fractional composition of wastes was influenced by the conditions of proces
Bio Precipitation of Zn II from Municipa
Kamal Sherina, Azhari Nik-Nuraini
This work was conducted to investigate the potential of using municipal wastewater as the source of sulphide and to evaluate the removal efficiency of zinc from municipal wastewater spiked with zinc. A two-stage experiment was carried out in a single 1 L anaerobic reactor operated for 13 days. In stage I, municipal wastewater containing sulphate was left under anaerobic condition for eight days fo
Wastewater Treatment for Lead Removal A
Sunil Jayant Kulkarni
Lead is a major cause of environmental concern for industries such as paint, pesticides, battery, and mining due to its potential to cause kidney, liver, brain, and nervous system diseases. This review explores various methods for lead removal in wastewater treatment, focusing particularly on techniques such as electro-coagulation, ion exchange, membrane separation, and biological approaches invol
Siloxane Crown Ether Polyamide Based Ele
Ioana-Maria Simionca, Adina Arvinte
A siloxane-crown ether polyamide copolymer (PDMS-PA-DB18C6) was electrochemically investigated for fabrication of lead-sensitive electrodes for trace analysis in aqueous solutions. The PDMS-PA-DB18C6 electrodes were successfully evaluated for anodic stripping voltammetric determination of lead(II) as a promising alternative for the detection of lead at ppb levels. By a judicious choice of the depo
Removal of lead ions from industrial was
S.H. Abdel-Halim, A.M.A. Shehata
The adsorption capacity of various natural materials for lead ions was investigated, focusing on animal bone powder, active carbon, Nile rose plant powder, commercial carbon, and ceramics. A standardized volume-to-mass ratio of 500 ml/g was employed for the adsorption tests. The study assessed the effects of various parameters, including contact time, pH, and lead concentration on the lead uptake
Removal of lead ions from industrial was (1)
Mohsen Arbabi, Sara Hemati
The removal of (potential) toxic heavy metal ions from sewage, especially in industrial and mining waste effluents, has been widely studied in recent years. The aim of the present study was to investigate the various methods for lead removal from industrial wastewater. This study was a review research, where data were collected through different databases in various articles. The various methods f
Removal of lead II from aqueous solution (1)
Manish Singh Rajput, Ashok K Sharma
Lead is known to be venomous for human body systems including the nervous, digestive, and skeletal systems, even at low levels. The growing demand for safe, eco-friendly, and low-cost adsorbents for lead removal from contaminated water has spurred research into the development of affordable alternatives. This review outlines the fundamental principles of adsorption and discusses various adsorption
Removal of Lead from Industrial Wastewat
Omar E. Abdel-Salam, Ibrahim M. Ismail
Lead present in several industrial wastes has serious effects on water quality. The objective of this study was to evaluate cathodic deposition as a method for lead removal from industrial wastewater. A lab-scale electrochemical cell incorporating flow-by porous graphite electrodes was employed under steady-state conditions. Various parameters, including flow rate, current density, lead influent c
Removal of lead from aqueous solutions u
Ahmed A. El-Refaey, Somaia G. Mohammad
This study compared the removal of lead from aqueous solutions by cantaloupe peels (CP) as biosorbent against cement kiln dust (CKD) as an industrial byproduct. CP and CKD were characterized by pH, total carbon, nitrogen, and hydrogen content, thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), Fourier transform infrared (FTIR), surface area
Removal of lead from contaminated water
Robert M. Brooks, Mozhgan Bahadory
Over the past 25 years, about 750,000 sites with potential contamination have been reported to federal or state authorities. Heavy metals are the largest class of contaminants and also the most difficult to treat. This work focuses on the removal of lead from aqueous solution. Lead pollution impacts all systems of the human body. Many methods utilized to remove lead from wastewater have shortcomin
Qualitative lead extraction from recycle
Alessandra Smaniotto, Angela Antunes
The pyrometallurgic process that the exhausted batteries are submitted for the recovery of metallic lead generates great amount of a by-product called slag. The slag is composed mainly of iron (≈60%) and lead (≈6%), and this residue cannot be disposed in conventional landfill due to the high lead content. This work presents a new methodology for the extraction of lead from slag, based on the compl
Organic acid enhanced electrodialytic ex
Pernille E Jensen, Birgitte K Ahring
Implementation of the soil washing technology for the treatment of heavy metal contaminated soils is limited by the toxicity and unwieldiness of the remaining heavy metal contaminated sludge. In this work, we investigated the feasibility of combining electrodialytic remediation with heterotrophic leaching for decontamination of the sludge. The ability of 11 organic acids to extract Pb from the fin
LEAD Removal from Industrial Wastewater
Ibtehal K. Shakir, Besma I. Husein
This investigation was carried out to study the treatment and recycling of wastewater in the Battery industry for an effluent containing lead ion. The reuse of such effluent can only be made possible by appropriate treatment method such as electro coagulation. The electrochemical process, which uses a cell comprised aluminum electrode as anode and stainless steel electrode as cathode was applied t
Lead Ion removal from Industrial effluen
Sachin M. Kanawade, R.W. Gaikwad
The growing concern over water pollution caused by industrial effluents necessitates the development of effective remediation strategies. This study investigates a cost-effective and eco-friendly method for the removal of lead ions from wastewater using the biomaterial Tridax procumbens, a medicinal plant. A systematic methodology was employed to evaluate the bioadsorption capacity of the material
Lead II Removal from Contaminated Soils
André Ribeiro, André Mota
Electrokinetic remediation deserves particular attention in soil treatment due to its peculiar advantages, including the capability of treating fine and low permeability materials, and achieving consolidation, dewatering and removal of salts and inorganic contaminants like heavy metals in a single stage. In this study, the remediation of artificially lead (II) contaminated soil by electrokinetic p
Electrochemical detection and removal of
Thabile Ndlovu, Omotayo A. Arotiba
Modification of exfoliated graphite (EG) electrode with generation 2 poly(propylene imine) dendrimer by electrodeposition resulted in an electrochemical sensor which was used to detect lead ions in water to a limit of 1 ppb and a linear response between 2.5 and 40 ppb using square wave anodic stripping voltammetry (SW-ASV). Pb(II) was also removed from spiked water sample using a 40-mm diameter un
Differential Pulse Anodic Stripping Volt
John Doe, Jane Smith
Recent advancements in machine learning have led to significant improvements in classification tasks, particularly when dealing with large datasets. This study aims to evaluate the impact of various machine learning algorithms on classification performance, focusing on accuracy, speed, and scalability. We conducted a series of experiments using multiple algorithms, including decision trees, suppor
Bioaccumulation and determination of lea
Winai Ouangpipat, Tapparath Lelasattarathkul
The present work describes the development and application of a carbon paste electrode modified by treated-Pennisetum setosum for the determination of lead(II) by anodic stripping differential pulse voltammetry. Most experiments were performed using the preconcentration/voltammetry/regeneration scheme. The resulting modified electrode offers a preferential uptake of lead(II) from solutions. Operat
A Novel Green Approach for Lead Adsorpti
M. Dharsana, J. Prakash Arul Jose
Environmental damage due to the discharge of organic pollutants and heavy metal toxins has become a major topic of concern for the past couple of years. Using just a natural adsorbent to solve wastewater concerns has lately gained popularity as an ecologically acceptable solution that encourages long-term growth. A range of approaches, including adsorption to the surface of agricultural leftovers,
Adsorption of Cd and Pb metal ions onto
Abdelhamid Addala, Noureddine Belattar
Lead is one of the most used metals in various factory activities, leading to significant environmental and public health concerns due to soil and water contamination. This study aims to evaluate the adsorption properties of a chelating ion exchange resin functionalized with an iminodiacetic acid group for the removal of Pb and Cd from wastewater. A batch procedure was employed to investigate the
A Review on Nanomaterialsas Solid Phase
Reena Saxena, Kajal Madaan
Nanotechnology is an advanced technology that has gained much attention due to their considerably small size and remarkable properties. Nanomaterials with their unique structural properties offer many advantages such as greater surface area, excellent adsorption capability, and high selectivity. These exceptional properties make them preferable to be used as solid phase extractants for the removal
Co intensification of gold leaching with
YANG Yong-bin, LI Qian
Co-intensification was researched to accelerate gold leaching with regards to its electrochemical nature by using anodic intensifiers of heavy metal ions (Pb2+, Bi3+, Tl+, Hg2+ and Ag+) on the basis of hydrogen peroxide assistant leaching on three different types of materials which were classified as a refractory sulphide gold concentrate, an easily leachable sulphide gold concentrate, and a low g
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),
Assessment of kinetics behavior of electrocoagulation process for the removal of suspended solids and metals from synthetic water
Hariraj Singh, Brijesh Kumar Mishra
This study investigates the kinetics behavior of the electrocoagulation process as an efficient and cost-effective technique for removing suspended solids and toxic metals from synthetic water. With the rise of industrial activities and urbanization leading to pollution of water resources, particularly heavy metal contamination, there is an urgent need for effective treatment methods. Electrocoagu
Efficiency of Aluminum and Iron Electrodes for the Removal of Heavy Metals [(Ni (II), Pb (II), Cd (II)] by Electrocoagulation Method
Muhammad Kaleem Khosa, Muhammad Asghar Jamal
Electrocoagulation (EC) technique is applied for the treatment of wastewater containing heavy metals ions such as nickel (Ni), lead (Pb) and cadmium (Cd) by using sacrificial anodes that corrode to release active coagulant flocs usually aluminum or iron cations into the solution. During electrolytic reactions, hydrogen gas evolves at the cathode. All the experiments were carried out in batch mode.
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
Chemical partitioning of sediment contamination by heavy metals in the San Pedro River, Sonora, Mexico
Agustín Gómez-Álvarez, Jesús L. Valenzuela-García
The present work describes the chemical forms of six heavy metals (Cd, Cu, Fe, Mn, Pb and Zn) and their space distribution on the San Pedro River sediments, by using a sequential extraction method. Obtained results indicate a metal increase for the nearest stations to the contamination sources (mining exploitation and urban areas). Both fractions, residual and the Fe and Mn oxides, were the most i
Thermodynamic Study for Arsenic Removal from Freshwater by Using Electrocoagulation Process
Parga, J.R., Valenzuela, J.L.
Industrial treatment of mineral-processing and non-ferrous metal-smelting acid wastewater effluents is becoming an enormous worldwide problem. In Mexico, heavy metals contaminated natural waters, including freshwater, surface water and ground water, are a significant problem as some of these compounds are known to be toxic, mutagenic, and carcinogenic. A very promising electrochemical treatment te
Recovery of Gold and Silver and Removal of Copper, Zinc and Lead Ions in Pregnant and Barren Cyanide Solutions
Gabriela Figueroa, Jesus L. Valenzuela
Over the past decade, the concern about toxic metals in freshwater has increased, leading to the implementation of environmental laws that require industries producing metal-containing wastewater to treat their discharges. This study aimed to investigate a novel method for minimizing heavy metals in mining industry wastewater by utilizing an innovative electrochemical treatment technique known as
Evaluating top soil trace element pollution in the vicinity of a cement plant and a former open-cast uranium mine in central Argentina
Gonzalo M. A. Bermudez, Mónica Moreno
Heavy metals are especially dangerous due to their persistence and toxicity, with soils acting as sinks for these toxic elements. This study aims to identify the levels and sources of heavy metal contamination in agricultural and residential areas around Córdoba, Argentina, and to evaluate the enrichment of total and HCl-extracted heavy metals. We collected ninety-four topsoil samples from the reg
Performance Evaluation of Waste Materials for the Treatment of Acid Mine Drainage to Remove Heavy Metals and Sulfate
Satish Chandra Bhuyan, Subrat Kumar Bhuyan
Acid Mine Drainage (AMD) poses a significant environmental challenge in the mining sector, characterized by low pH and high concentrations of pollutants, particularly sulphate and heavy metals. This research evaluates the effectiveness of various low-cost waste materials, such as fly ash, metallurgical slag, zero-valent iron (ZVI), cement kiln dust (CKD), and organic waste, in treating AMD. The co