Results 61 to 70 of about 405,346 (229)
Sustainable Environment Research, 2022 Recycling of waste printed circuit boards (PCBs) has attracted increasing attention because of its high annually produced amount and high content of gold.
Yu-Fong Huang +2 more
doaj +1 more source
Metals, 2021 A nitrate leachate containing Cu(II), Ag(I), Ni(II), Mg(II), and Al(III) was obtained during the leaching of industrial dust, which arises during the pyrometallurgy of spent camera modules.
Pan-Pan Sun +3 more
doaj +1 more source
Food Safety and Health, EarlyView.ABSTRACT Rising global demand for safe and unadulterated foods has accelerated the need for rapid, low‐cost, and portable analytical technologies. Traditional laboratory methods, although accurate, are often labor‐intensive and unsuitable for decentralized, real‐time monitoring. In response, nanomaterial‐assisted electrochemical sensors have emerged as
Toleshi Teshome
wiley +1 more source
Environmental Challenges, 2021 The modernization of technologies has led to the escalation of the demand for silver in the electrical and electronics manufacturing sectors. Conventional lean grade ores of silver are insufficient to account for silver consumption.
Gautam Mishra +4 more
doaj +1 more source
Food Science &Nutrition, Volume 14, Issue 11, November 2026.ZnO and g‐C3N4/ZnO S‐scheme heterojunctions are synthesized via conventional, green, and biogenic routes. They combat foodborne pathogens and degrade mycotoxins through ROS generation, Zn2+ release, and membrane disruption, enabling antimicrobial packaging, photocatalytic decontamination, and nanobiosensing. However, migration, toxicity, and regulatory
David Adeiza Zakari +7 more
wiley +1 more source
Application of alternative lixiviants for secondary heap leaching of gold [PDF]
, 2000 Some preliminary results on the secondary leaching of previously heap leached gold ore are presented. Alternative lixiviants for gold comprising chlorine, thiourea and thiosulphate were compared with cyanide using bottle roll tests.
Nikoloski, A., Stockton, B.
core
Recovery of Gold from Pregnant Thiourea Leaching Solution by Synergistic Extraction
, 2020 Aim of this research is to investigate the ability of synergist system of D2EHPA-isodecanol to recover gold from thiourea leaching solution. Synergistic extraction was introduced to replace single extraction due to enhance the extraction efficiency of ...
Mohd Jumain Jalil +5 more
semanticscholar +2 more sources
Leaching of gold from a mechanically and mechanochemically activated waste [PDF]
Acta Montanistica Slovaca, 2010 The intensification of leaching of gold from a waste using mechanical activation (milling in water) and mechanochemical activation(milling in thiourea solution) were studied as the pretreatment steps.
Jana Ficeriová, Peter Baláž
doaj
Investigation on Gold–Ligand Interaction for Complexes from Gold Leaching: A DFT Study
Molecules, 2023 Gold leaching is an important process to extract gold from ore. Conventional alkaline cyanide process and alternative nontoxic lixiviants including thiosulfate, thiourea, thiocyanate, and halogen have been widely investigated. However, density functional
Na Zhang, Jue Kou, Chunbao Sun
doaj +1 more source
Electrolysis of Gold from Filtration Waste by Means of Mechanical Activation [PDF]
Acta Montanistica Slovaca, 2012 The intensification of the gold thiourea leaching from a filtration waste (Košice, Slovakia) using mechanical activationas the pretreatment step has been studied.
Jana Ficeriová, Peter Baláž
doaj