The presence of micro and nanoplastics in the food chain constitutes an emergent multifactorial safety physiological stress problem, which must be approached with a strategic perspective since it affects public health when consuming products that have this pollutant, such as fish crustaceans, fruits, vegetables. In review, authors present results by scientists from different disciplines who are dedicated to discovering their chemical constitution origin, contents these microparticles edible...

The average lithium content in the Earth’s crust is estimated at about 0.007%. Despite this, considered abundant and widely distributed, with significant extraction from various sources. Notably, brines Salar de Atacama are highlighted for their high concentration ~1800 mg/L. Lithium currently recovered these through a solar evaporation process. brine transferred series of ponds, increasing 0.2% to 6% over 18 months, while decanting other minerals like potassium, magnesium, boron. This...

Due to the scarcity of high-grade minerals on Earth’s surface and ever-increasing demand for critical metals required in production clean energy, search alternative sources has become essential. Ferromanganese crusts, a mineral resource located depths ocean, contain high concentrations valuable metals, particularly cobalt (Co) manganese (Mn). A leaching process using sulfuric acid, with addition steel scrap, been proposed processing this resource. The study investigated extraction (Mn) under...

The fast-paced depletion of fossil fuels and environmental concerns have intensified interest in renewable energies, with dispatchable solar energy emerging as a key alternative. Concentrated power (CSP) technology, utilizing thermal storage (TES) systems molten salts at 560 °C, offers significant potential for large-scale generation. However, these extreme conditions pose challenges related to material corrosion, which is critical maintaining the efficiency lifespan CSP. This research...

This study presents the development and application of a batch-type photoelectrochemical reactor employing advanced oxidation processes (AOPs) with in situ generated TiO2 particles for efficient degradation azo dyes. The uses titanium sheets as electrodes, facilitating electrochemical generation TiO2, which acts photocatalyst under UV light. specifically targets dyes frequently encountered industrial wastewater, focusing on Brilliant Blue, Erythrosine, Tartrazine, together form Navy Blue dye...

Two new Cu(II) (CP1) and Co(II) (CP2) coordination polymers (CPs) with the triazole ligand 5-methyl-1-(pyridin-4-yl-methyl)-1H-1,2,3-triazole-4-carboxylate (L1) have been synthesized structurally characterized by SCXRD (Single Crystal X-Ray Difraccion), PXRD (Power Difracction), FT-IR (Fourier Transform Infrared), TG (Theermo Gravimetric), electrochemical techniques. Both CPs were obtained at water/n-butanol interface reacting nitrate salts of each metal NaL1 ligand. analysis revealed that...

Lithium is a metal with highly promising outlook for future global demand. Its industrial processing relies on two primary methods: production from brines through solar evaporation ponds and rock sources via flotation, roasting, subsequent leaching. Chile currently the world’s second-largest producer of lithium, surpassed only by Australia. However, Chile’s lithium process significantly advantaged exceptionally high concentration in Salar de Atacama—the highest world—and region’s radiation,...

Ferromanganese crusts are mineral resources distributed in the planet’s oceans. These deep-sea minerals stand out for their abundance and diversity of metals, with Mn Co being most abundant elements. a good alternative to diversify extraction elements, which today found at low grades on Earth’s surface. For co-processing ferromanganese recover Mn, there few studies. generally worked use reducing agent, many cases previous roasting processes. In present investigation, two that were collected...

The solar electroflotation (EF) processes using saline electrolytes are today one of the great challenges for development electrochemical devices, due to corrosion problems that generated during operation by being in permanent contact with Cl- ions. This manuscript discloses behavior titanium electrodes a superposition model based on mixed potential theory and evaluation superficial performance Ti operated 4 V/SHE solution 0.5 M NaCl. Additionally provided is an analysis regarding HER, ORR,...

The deterioration of reinforced concrete structures in marine environments presents multiple problems due to the premature degradation steel. This work aimed study corrosion A630-420H steel when exposed a 0.5 M NaCl solution. Although this carbon is most widely used material for Chile, there limited research on its resistance contact with saline solutions. electrochemical reactions and their roles rate were studied using linear sweep voltammetry, weight loss, scanning electron microscopy,...

The implementation of corrosion engineering control methods and techniques is crucial to extend the life urban industrial infrastructure assets equipment affected by natural corrosion. Then, search stable environmentally friendly inhibitors an important pending task. Here, we provide experimental evidence on inhibitory activity aqueous extracts Skytanthus acutus Meyen leaf, a native plant from Atacama Desert in northern Chile. as powder should be prepared at 55 °C avoid thermal decomposition...

The presence of ultrafine clay particles that are difficult to remove by conventional filtration creates many operational problems in mining processing systems. In this work, the removal suspensions has been investigated using an electroflotation (EF) process with titanium electrodes. results show EF is a viable and novel alternative for removing kaolinite-type present sedimentation tank overflows low salt concentrations (<0.1 mol/L) copper facilities based on saline water splitting concept....

In Northern Chile, large amounts of highly corrosive solutions are currently generated in the process cathode washing after completing electrowinning or electrorefining copper. This study investigates electrochemical behavior ASTM A36 carbon steel pregnant-leach-solution (PLS) wash water. Measurements impedance spectroscopy and linear sweep voltammetry, complemented with weight loss measurements, were performed. Four ratios PLS containing reverse osmosis (RO) water evaluated, considering...

Hydrogen has emerged as a promising energy carrier, offering viable solution to address our current global demands. Solar stands out primary source of renewable power and the potential produce hydrogen through utilization solar cells. The quest for efficient, durable, cost-effective photocatalysts is imperative advancement solar-driven generation. Copper slag, by-product stemming from copper smelting refining processes, primarily consists metal oxides like hematite, silica, alumina. This...

Solar saline water splitting is a promising approach for sustainable hydrogen production, harnessing abundant solar energy and the availability of brine resources, especially in Atacama Desert. Bischofite (MgCl2&amp;middot;6H2O), naturally occurring salt, has garnered significant attention due to its wide range industrial applications challenges associated with efficient production arid or hyper locations. This work discloses electrochemical performance Mn2O3 electrodes using superposition...

The presence of clays in copper minerals has a significant negative impact during their processing, leading to low recoveries the flotation process. In saline environments such as seawater, contribute an increase operational problems caused by salinity, decrease grade concentrate, alteration rheology mineral pulp, selectivity process, reduction quality clarified water, and excessive corrosion metallic components. This study explores electroflotation kaolinite montmorillonite NaCl solutions...

Solar thermal plants typically undergo trough operational cycles spanning between 20 and 25 years, highlighting the critical need for accurate assessments of long-term component evolution. Among these components, heat storage media (molten salt) is crucial in plant design, as it significantly influences both thermophysical properties working fluid corrosion steel components systems. Our research focused on evaluating effects operating a low-melting-point ternary mixture consisting 30 wt%...

Cobalt, like other critical elements, is gaining in importance today. The great technological advances and the deep knowledge of physical chemical properties this element have allowed to enhance its applications various fields, such as: catalysts, paints, alloys for mechanical aerospace industries, as well medical sector recent times, use within rechargeable battery industry. main exploitable deposits are Democratic Republic Congo, which economic potential due a strong influence on their...

Cellular automata (CA) models have emerged as a valuable tool in corrosion management. This manuscript provides an overview of the application cellular research, highlighting their benefits and contributions to understanding complex nature processes. offer computational approach simulate behavior at microscale, capturing intricate interactions between electrochemical reactions, material properties, environmental factors generating new vision predictive maintenance. It discusses key features...

Concentrated solar power (CSP) plants, in the context of thermal energy storage (TES) upgrades, need to provide a timely and effective response corrosion process that occurs due effect high temperatures, where one main challenges is control its effect, thus costs related materials used. Electrochemical impedance spectroscopy (EIS) linear polarization resistance (LPR) were applied this study as monitoring technique. The electrochemical tests carried out on AISI304, AISI430, HR-224 immersed...