Adsorption of Cr(VI) from aqueous solutions onto activated pomegranate peel waste

Abdel-Galil, E. A.; Hussin, L. M. S.; El-Kenany, Wafaa Mohamed

doi:10.5004/dwt.2021.26588

Cited by 15 publications

(12 citation statements)

References 84 publications

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“… Name of adsorbent pH Sorption capacity (mg/g) Reference Tamarind hull 1 81 Verma et al. (2006) H 2 SO 4 treated pomegranate peel 3 28.28 Abdel-Galil et al. (2021) Peanut shell 2 4.32 Ilyas et al.…”

Section: Resultsmentioning

confidence: 99%

Efficient biosorption of hexavalent chromium from water by modified arecanut leaf sheath

Pant

Neupane

Paudel

et al. 2022

Heliyon

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Section: Resultsmentioning

confidence: 99%

Efficient biosorption of hexavalent chromium from water by modified arecanut leaf sheath

Pant

Neupane

Paudel

et al. 2022

Heliyon

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“…They used the batch adsorption technique to study the infl uence of various operating factors such as pH, initial concentration, contact time, and biosorbent dose. The equilibrium data fi tted best to the Langmuir model, and the kinetics of the process better explained by the pseudo-second-order model [69].…”

Section: Biomass-based Adsorbentsmentioning

confidence: 96%

“…Most biomass-based adsorbents reported to follow Langmuir adsorption isotherm, and few of them reported to follow Freundlich Adsorption. Better fi t with the Langmuir isotherm model indicates that Cr(VI) ions from monolayer on a homogeneous surface of the adsorbents without interaction between adsorbed molecules and all the adsorption sites are energetically equivalent [68][69][70][71][79][80][81][82][83]. However, the Freundlich isotherm model considers multilayer adsorption of Cr(VI) on the heterogeneous surface of the adsorbents, and the adsorption energy exponentially decreases on completion of the adsorption sites of adsorbents [46,66,86].…”

Section: Biomass-based Adsorbentsmentioning

confidence: 99%

Recent Advances in Biomass-Based Waste Materials for the Removal of Chromium (VI) from Wastewater: A Review

et al. 2021

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Hexavalent chromium (Cr(VI)) is a critical pollutant with high toxicity, even at trace concentrations. Cr(VI) is possibly carcinogenic and mutagenic and can produce serious health issues. Hence, it is necessary to remove Cr(VI) from the water before releasing it into the environment. Currently, numerous removal techniques were used. Adsorption is the best method compared to others because it is simple, cheap, highly efficient, and can be used in water having trace concentrations of contaminants. Biomass-based waste materials (BMWs) are found as far better adsorbents than commercially and other available adsorbents. In this study, the existing Cr(VI) removal techniques are reviewed and, a broad range of current research studies of Cr(VI) removal from water by using BMWs are evaluated. This review can be helpful to develop a more efficient, cheap, reliable, and environmentally benign bio-adsorbent. It is obvious after the literature review given herein that BMWs exhibited potential adsorbents for the removal of Cr(VI). Also, the chemically modified adsorbents exhibited a higher adsorption capacity than unmodified adsorbents.

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“…We can see that the Langmuir isotherms model conformed to the Cr(VI) adsorption with R 2 = 0.9366, 0.9961, 0.9950, and 0.9997, respectively, and monolayer adsorption was carried out on the steady surface of ZIFs (Figure5d). And that ZIF-L-Co showed excellent adsorption capacity among these four adsorbents, which was higher than the part of reported inorganic/organic adsorbents[9] , such as ZIF-67 microcrystals[8] and Mesoporous TiO 2…”

mentioning

confidence: 72%

Convenient synthesis of Co-base metal-organic frameworks to effectively adsorb and remove Cr(VI) from aqueous

Xie,

Li,

Dong

2023

J. Phys.: Conf. Ser.

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Herein, we reported the synthesis of a series of well-defined regular cobalt-based metal-organic frameworks (MOFs) from 3D to 2D phases through a facile synthesis method and confirm their effective adsorption behavior for Cr(VI) in aqueous. The equilibrium adsorptive capacities of ZIF-67, ZIF-L-Co-H, ZIF-L-Co-L, and ZIF-L-Co were 27.7, 28, 28.2, and 32 mg/g, respectively. ZIF-L-Co nanosheet morphology exhibited excellent adsorption performance for Cr(VI) in water for the first time, and sharp adsorption speed was also presented at the relevant initial concentrations. The Cr(VI) adsorption process demonstrated that the result well fitted the Langmuir isotherm model of 32.5 mg g-1 with uniform monolayer adsorption. The findings provided a broader understanding of Co-MOFs application as the Cr(VI) removal of wastewater.

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Adsorption of Cr(VI) from aqueous solutions onto activated pomegranate peel waste

Cited by 15 publications

References 84 publications

Efficient biosorption of hexavalent chromium from water by modified arecanut leaf sheath

Efficient biosorption of hexavalent chromium from water by modified arecanut leaf sheath

Recent Advances in Biomass-Based Waste Materials for the Removal of Chromium (VI) from Wastewater: A Review

Convenient synthesis of Co-base metal-organic frameworks to effectively adsorb and remove Cr(VI) from aqueous

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