Removal of heavy metal ions from water by an combined sorption–crystallization process using activated clays

Myasnikov, S. K.; Tikhonov, A. Yu.; Chipryakova, A. P.; Кулов, Н. Н.

doi:10.1134/s0040579516040436

Cited by 11 publications

(3 citation statements)

References 31 publications

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“…Natural clay is a safe and low-cost material, making it a suitable alternative to nano-sorbents if it has an adequate adsorption capacity. a natural clay NC was collected from the Eldoushain area, Nile river state, Sudan (16°45′43.1″N 33°35′25.0″E) 40 – 43 . To improve the adsorption capacity, water treated clay (WTC) and an acid-treated clay ATC were employed for the removal of MF and PA from real water samples.…”

Section: Introductionmentioning

confidence: 99%

Linear and nonlinear investigations for the adsorption of paracetamol and metformin from water on acid-treated clay

Elamin

Abdulkhair

Algethami

et al. 2021

Sci Rep

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Natural clays are considered a safe, low-cost, and sound sorbent for some pharmaceutical and body care products from water. Metformin (MF) and paracetamol (PA) are of the most consumable drugs worldwide. A portion of natural clay was treated with distilled water, and another part was treated with hydrochloric acid. The water-treated clay (WTC) and the acid-treated clay (ATC) were characterized by scanning electron microscopy-energy dispersive spectroscopy, X-ray diffraction, Fourier transforms infrared spectroscopy, and nitrogen adsorption isotherm. Batch experiments were employed to investigate the influence of contact time and solution parameters on the adsorption of PA and MF on WTC and ATC. 30 min attained the equilibrium for all sorbent-sorbate systems. Both sorbents fitted the pseudo-second-order kinetic model with a preference to the nonlinear fitting, and the mechanism of adsorption partially fitted the liquid-film diffusion model. The PA and MF adsorption on WTC and ATC fitted the Freundlich model in preference to nonlinear fitting. The adsorption of pollutants on both sorbents was spontaneous, exothermic, and physisorption in nature. Even at low concentrations, both WTC and ATC showed efficiency above 80% in removing PA and MF from tab water, groundwater, and Red seawater. These findings nominated natural clay as an alternative to the costly nanomaterials as sorbents for removing pharmaceutical contaminants from water.

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Section: Introductionmentioning

confidence: 99%

Linear and nonlinear investigations for the adsorption of paracetamol and metformin from water on acid-treated clay

Elamin

Abdulkhair

Algethami

et al. 2021

Sci Rep

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show abstract

“…Most heavy metal ions are toxic and constitute a serious health threat for humans and other species when existing in water, even at very low concentrations. A wide variety of materials such as zeolites, [22][23][24][25] clay, 26,27 resins, 28,29 metal-organic frameworks, 20,30,31 and covalent organic frameworks 32,33 have been explored. Among these approaches, adsorption is known to be most promising because of its convenience of operation, low cost, and availability of a diversity of adsorbent materials.…”

Section: Introductionmentioning

confidence: 99%

“…[19][20][21] The key to the success of the adsorption approach is to develop efficient adsorbent materials. A wide variety of materials such as zeolites, [22][23][24][25] clay, 26,27 resins, 28,29 metal-organic frameworks, 20,30,31 and covalent organic frameworks 32,33 have been explored. Most of these materials suffer from low efficiency or poor stability in water, limiting their practical applications in water treatment.…”

Section: Introductionmentioning

confidence: 99%

Polymer brushes on graphene oxide for efficient adsorption of heavy metal ions from water

Liu

Ding

Chi

et al. 2019

J of Applied Polymer Sci

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The pollution of heavy metal ions in water poses a serious threat to human being and ecosystems. Here, we report polyamidoxime (PAO) brush grafted graphene oxide (GO) as a highly efficient adsorbent for extraction of toxic metal cations from water. Surface-initiated atom transfer radical polymerization was used to grow polyacrylonitrile (PAN) brushes on GO, followed by conversion of the nitrile groups in PAN into amidoxime groups, which had high binding affinity toward heavy metal cations. The PAO brush grafted GO demonstrated significantly fast adsorption kinetics and large adsorption capacity. At optimal pH 5, the PAO brush grafted GO can achieve maximum adsorption capacities of 116.7 mg g −1 for Pb(II), 258.6 mg g −1 for Ag(I), 192.2 mg g −1 for Cu(II), and 167.9 mg g −1 for Fe(III), which were significantly larger than those of small molecule functionalized GO. Mechanism analysis suggested that the enhanced adsorption performance was due to the myriads of functional groups in PAO brushes that were easily accessible to metal ions because of the swelling of the polymer brushes in water.

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Carrier-Based Biofertilizers

Kaur,

Kaur

2023

Metabolomics, Proteomes and Gene Editing Approaches in Biofertilizer Industry

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Removal of heavy metal ions from water by an combined sorption–crystallization process using activated clays

Cited by 11 publications

References 31 publications

Linear and nonlinear investigations for the adsorption of paracetamol and metformin from water on acid-treated clay

Linear and nonlinear investigations for the adsorption of paracetamol and metformin from water on acid-treated clay

Polymer brushes on graphene oxide for efficient adsorption of heavy metal ions from water

Carrier-Based Biofertilizers

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