Application And Prospect Of Talc As Heavy Metal Passivation Agent

Wang, Yian; Lin, Hua; Lin, Zhiyi; Yuan, Yuhang

doi:10.1088/1757-899x/392/3/032029

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…It is clear that surface adsorption has a significant effect. Furthermore, specific surface functional groups of talc, such as Si-O-Si and O-Si-O, can bind with heavy metal ions and aid in the removal of heavy metal ions from talc [26]. In the manufacturing of paints, lubricants, plastics, cosmetics, medicines, and ceramics, talc is extensively employed as a filler, coating, and dusting agent [27].…”

Section: Introductionmentioning

confidence: 99%

Removal of Uranium from Effluent Acidic Solution Using Manganese Oxide Coated Modified Talc (MOCMT)

Nagar,

Mahmoud,

Yousef

et al. 2023

austinchemeng

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In this study, the unique manganese dioxide coated modified talc (MOCMT) adsorbent was easily synthetic. (MOCMT) was evaluated as an adsorbent for the removal of U (VI) from effluent (=10 ppm) solution. To fit the adsorption results, the Langmuir and Freundlich isotherm models were applied, as well as the kinetic parameters of the adsorption process, which were measured and fitted. Five adsorption/desorption cycles with 0.3 M H2SO4 as an eluent were performed to test the reusability. The MOCMT was used to extract uranium from effluent solution produced after a four-cycle leaching/adsorption during the uranium milling process in the Gattar project.

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Section: Introductionmentioning

confidence: 99%

Removal of Uranium from Effluent Acidic Solution Using Manganese Oxide Coated Modified Talc (MOCMT)

Nagar,

Mahmoud,

Yousef

et al. 2023

austinchemeng

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“…Kalantari et al [30] integrated various amounts of talc into polysulfone polymer, with the goal of separating carbon dioxide from methane. T has been utilized as an adsorbent in water treatment to remove contaminants from water, either alone or in conjunction with other inorganic/organic materials [24,[26][27][28][29][31][32][33][34][35]. According to the research findings, T has high adsorption affinity for cationic dyes and positively charged metal ions because its structure contains a large number of functional groups such as Mg − O, − OH, Si − O − Si, and O-Si-O linkages [35].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Removal of Cationic Crystal Violet and Anionic Reactive Yellow Dyes using eco-friendly Chitosan Functionalized by Talc and Cloisite 30B

Kandil

Ali

2022

J Polym Environ

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Designing adsorbent materials that can effectively remove many types of organic dyes is crucial because of the wide diversity of synthetic dyes found in wastewater. Thus, this study presents the synthesis of economic and eco-friendly adsorbent composites composed of chitosan (Cs), talc (T), and Cloisite 30B clay (C) to remove both cationic crystal violet (CV) and anionic reactive yellow 145 (RY) dyes for the first time. Cs was functionalized with T and subsequently the CsTC1 and CsTC2 composites were prepared by sensitizing the obtained CsT with different weight ratios of Cloisite 30B (C). X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), N2 adsorption–desorption isotherm, and zeta potential analysis were employed to characterize the materials. The addition of T to Cs matrix improves the thermal stability, pore size, and pore volume with respect to pure Cs. The effect of C inclusion was examined by measuring the affinity of the prepared composites towards adsorption of cationic CV and anionic RY dyes in comparison to pure Cs and CsT composite. The adsorption results in a single dye solution revealed that the CsTC1 composite is the most effective adsorbent for removal of RY dye with 76.9 mg/g adsorption capacity, whereas the CsTC2 composite exhibited the highest adsorption activity for CV dye (37.03 mg/g). Furthermore, RY and CV co-adsorption on CsTC composites was tested from a mixed dye solution. The adsorption kinetics of RY and CV adsorption followed the pseudo second order model. Langmuir isotherm model described the experimental adsorption data better than the Freundlich, Dubinin–Radushkevich, and Temkin isotherm models, indicating a monolayer sorption process for both dyes. The proposed mechanism for RY and CV adsorption using CsTC composites was investigated.

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“…The reason for choosing it is due to its unique properties, which included high thermal stability and having a large number of functional groups in its structure as Mg-O, -OH, Si-O-Si and O-Si-O bonds. These groups have enabled T to be used as adsorbent to remove cationic dyes or positively charged metal ions from wastewater either by using it alone or in combination with other inorganic materials [23][24][25][26][27]. Only one example exists on the literature about the combination between T and Cs where polyvinyl alcohol was added to them to strengthen the Cs [22].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous removal of cationic crystal violet and anionic reactive yellow by using eco- friendly hybrid chitosan- talc-cloisite 30B composite

Kandil

Ali

2022

Preprint

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Due to the wide variety of synthetic dyes present in wastewater, there has been an urgent need to develop adsorbent materials to remove both cationic and anionic dyes. Since the development of such materials is still challenge, this paper is an attempt to prepare an economic and eco-friendly adsorbent material from chitosan to remove both cationic and anionic dyes from aqueous solution. Hence, hybrid composites from chitosan (Cs), talc powder (T) and cloisite 30B (C) with different weight ratios of 1: 2: 0, 1: 2: 1 and 1: 2: 2 were prepared. Chemical structure, thermal stability and surface morphology of the prepared composites were studied by using FTIR, TGA and SEM. The affinity of the prepared composites towards adsorption of cationic crystal violet (CV) and anionic reactive yellow 145 (RY) dyes was investigated. The adsorption results showed that the composite with a weight ratio of 1: 2: 1 is the most effective adsorbent for removal of RY dye with 76.9 mg/g adsorption capacity, whereas the composite with a weight ratio of 1: 2: 2 exhibited the highest adsorption activity for CV dye (37.03 mg/g). The adsorption of RY and CV on these composites followed the pseudo second order model. The langmuir isotherm model described the experimental adsorption data better than the Freundlich, Dubinin–Radushkevich, and Temkin isotherm models, indicating a monolayer sorption process for both dyes.

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Application And Prospect Of Talc As Heavy Metal Passivation Agent

Cited by 5 publications

References 11 publications

Removal of Uranium from Effluent Acidic Solution Using Manganese Oxide Coated Modified Talc (MOCMT)

Removal of Uranium from Effluent Acidic Solution Using Manganese Oxide Coated Modified Talc (MOCMT)

Simultaneous Removal of Cationic Crystal Violet and Anionic Reactive Yellow Dyes using eco-friendly Chitosan Functionalized by Talc and Cloisite 30B

Simultaneous removal of cationic crystal violet and anionic reactive yellow by using eco- friendly hybrid chitosan- talc-cloisite 30B composite

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