Surface and structure characteristics of commercial K-Feldspar powders: Effects of temperature and leaching media

Salimkhani, Hamed; Joodi, Tohid; Bordbar‐Khiabani, Aidin; Dizaji, Ali Motei; Abdolalipour, Behnam; Azizi, Ali

doi:10.1016/j.cjche.2018.11.016

Cited by 22 publications

(3 citation statements)

References 43 publications

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“…Sustainability 2023, 15, x FOR PEER REVIEW 4 of 20 main operation when processing dust via hydrometallurgical methods is through leaching using acidic solutions (H2SO4, HNO3, HCl), alkalis (NaOH, NH4OH) or acidified salts (FeCl3, Fe2(SO4)3). All of the above methods are described in sufficient detail in the technical literature [29][30][31][32][33][34][35][36] and do not require special comment. Hydrometallurgical methods of dust processing have a number of technological and environmental advantages over pyrometallurgical methods.…”

Section: Experimental Section 21 Experimental Proceduresmentioning

confidence: 99%

Extraction of Pb, Cu, Zn and As from Fine Dust of Copper Smelting Industry via Leaching with Sulfuric Acid

Dosmukhamedov,

Zholdasbay,

Argyn

2023

Sustainability

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Fine dust from copper smelting plants is an important source of raw materials for the extraction of various valuable metals. A specific feature of dust from copper smelting plants in Kazakhstan is their high arsenic content of up to 15%. This work shows the possibility of hydrometallurgical processing of fine dust from copper smelters, obtained during the converting of copper mattes through the Vanyukov process, via direct leaching with sulfuric acid. The influence of temperature, process time and the S:L (solid/liquid) ratio on the selective extraction of Pb, Zn, Cu and As into targeted products under leaching conditions is studied. The results of the test work show that with the optimal process parameters of S:L = 1.5, t = 60 °C, τ = 60 min, the extraction of copper and zinc into solution is achieved as 89% and 96%, respectively, and lead into cake by up to 97%. The relatively low extraction of copper and zinc into the solution is explained by the transition of copper and zinc ferrites that are insoluble in sulfuric acid into the lead cake. The redistribution of arsenic between the leaching products established in this case also affects the reduction in copper and zinc in the solution. The extraction of arsenic into the solution is 49.32%. More than half of the arsenic from the dust is left in the lead cake. The concentration of arsenic in lead cake will lead to its transition into circulating dust during smelting. This will increase the accumulation of arsenic in the overall process flow. Therefore, when organizing dust-processing technology, it is necessary to provide measures for the preliminary removal of arsenic.

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Section: Experimental Section 21 Experimental Proceduresmentioning

confidence: 99%

Extraction of Pb, Cu, Zn and As from Fine Dust of Copper Smelting Industry via Leaching with Sulfuric Acid

Dosmukhamedov,

Zholdasbay,

Argyn

2023

Sustainability

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“…Fluoride has been known for its bactericidal effect by the disruption in metabolism because of the inhibition of bacterial enzymes and membrane function [55,56]. Recently, silicon and fluoride ions have been reported to enhance the incorporation of newly formed collagen into the bone matrix and increase the rate of seeding of apatite crystals [57,58]. Nurhaerani et al [55] found that plasma-based fluorine ion implantation into stainless steel provided surface anti-bacterial and antiinfection activities and reduced the attachment of S. mutans bacterium.…”

Section: Microbiological Studiesmentioning

confidence: 99%

Advanced surface treatment techniques counteract biofilm-associated infections on dental implants

Koopaie

Bordbar‐Khiabani

Kolahdooz

et al. 2020

Mater. Res. Express

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Topography and surface chemistry can significantly affect biofilm formation on dental implants. Recently, the γ-TiAl alloy was considered as the most reliable candidates for the preparation of dental implants because of its excellent mechanical strength, chemical stability and biocompatibility. The emphasis of this study lies in the effects of high-speed milling assisted the minimum quantity of lubrication (HSM-MQL), micro-current wire electrical discharge machining (mWEDM), Er,Cr:YSGG laser and sandblasting/largegrit/acid-etching (SLA) treatments on surface morphology, topography, chemical composition, wettability and biofilm-associated infections on the surface of each group. The surface-treated samples were analyzed using a scanning electron microscope (SEM), SEM surface reconstruction, energy dispersive x-ray spectroscopy (EDS) and water contact angle measuring system. SEM and topography images of mWEDM and laser-treated surfaces showed more irregular surfaces compared to SLA and HSM-MQL surfaces. Results showed that mWEDM and laser-treated surfaces revealed hydrophobic behavior. A significant decrease of biofilm formation was observed on mWEDM treated surface due to the hydrophobicity and existence of the copper element in the recast layer chemical composition. Moreover, EDS confirmed that the zirconium, silicon, and fluorine elements were decorated onto the SLA treated γ-TiAl surface that can have a direct effect on the anti-bacterial activity.

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“…It is ground and purified using strong magnets to remove residual iron compounds, then milled into a fine powder. It could also contain varying quantities of K, Ca and Na [13]. Feldspars are often modified and combined with other materials to create the glassy restorative materials used in dentistry [14].…”

Section: Introductionmentioning

confidence: 99%

Montmorillonite in dentistry: a review of advances in research and potential clinical applications

Prasad Kumara,

Deng,

Cooper

et al. 2024

Mater. Res. Express

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Montmorillonite (MMT) is a biocompatible, cost-effective phyllosilicate mineral clay material with a nanolayered structure belonging to the smectite group. MMT is frequently used as an adsorbent catalyst in organic synthesis, food additives, cosmetics, medical applications and many other applications in varying industries. MMT has been incorporated into numerous experimental dental restorative materials as a reinforcing filler due to its high aspect ratio, forming interfacial solid bonds with the polymer matrix. The relatively high cation exchange capacity and layered structure of MMT pave the way as a medium for drug delivery systems. Furthermore, the incorporation of ions such as calcium, fluoride, silver, and zinc potentially increase the remineralization properties and antibacterial properties of MMT-based dental materials. Despite modern dental restorative materials having advanced significantly with innovations in material nanoscience, challenges such as biocompatibility, inadequate mechanical properties, marginal leakage, polymerization shrinkage, aesthetic concerns, and overall costs remain to be addressed. This review investigates the potential of montmorillonite (MMT) in dentistry, emphasizing its distinctive properties, composite formulations, and applications. It assesses the current state of research in these areas, aiming to highlight existing gaps in knowledge, emerging trends, and lesser-known applications of MMT-based materials. The review underscores MMT's promise as an alternative material across various dental applications while noting the scarcity of research on completed products and in vivo clinical studies.

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Surface and structure characteristics of commercial K-Feldspar powders: Effects of temperature and leaching media

Cited by 22 publications

References 43 publications

Extraction of Pb, Cu, Zn and As from Fine Dust of Copper Smelting Industry via Leaching with Sulfuric Acid

Extraction of Pb, Cu, Zn and As from Fine Dust of Copper Smelting Industry via Leaching with Sulfuric Acid

Advanced surface treatment techniques counteract biofilm-associated infections on dental implants

Montmorillonite in dentistry: a review of advances in research and potential clinical applications

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