Removal of chromium (VI) from aqueous medium using chemically modified banana peels as efficient low-cost adsorbent

Ali, Arshad; Saeed, Khalid; Mabood, Fazal

doi:10.1016/j.aej.2016.05.011

Cited by 188 publications

(97 citation statements)

References 38 publications

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“…The adsorption thermodynamic parameters are shown in Table S5. The Gibbs free energy (∆G 0 ) was negative at different temperatures, suggesting that the adsorption process was spontaneous and feasible [7,[38][39][40]. In the actual environment, wastewater does not contain only Cr(VI).…”

Section: Resultsmentioning

confidence: 99%

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Removal of Cr(VI) from Aqueous Solution by Polypyrrole/Hollow Mesoporous Silica Particles

Gao

Liu

et al. 2020

Nanomaterials

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The removal of Cr(VI) in wastewater plays an important role in human health and environment. In this work, polypyrrole/hollow mesoporous silica particle (PPy/HMSNs) adsorbents have been newly synthesized by in-situ polymerization, which prevent the aggregation of pyrrole in the process of polymerization and exhibit highly selective and powerful adsorption ability for Cr(VI). The adsorption process was in good agreement with the quasi-second-order kinetic model and the Langmuir isotherm model. And the maximum adsorption capacity of Cr(VI) was 322 mg/g at 25 °C. Moreover, the removal rate of Cr(VI) by PPy/HMSNs was ~100% in a number of binary systems, such as Cl−/Cr(VI), NO3−/Cr(VI), SO42−/Cr(VI), Zn2+/Cr(VI), Fe3+/Cr(VI), Sn4+/Cr(VI), and Cu2+/Cr(VI). Thus, the PPy/HMSNs adsorbents have great potential for the removal of Cr(VI) in wastewater.

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Section: Resultsmentioning

confidence: 99%

“…The adsorption method possesses the advantages of having no secondary pollution, low cost, and simple preparation as a removal method for Cr(VI), and has gained much attention [6][7][8]. However, the type of adsorbent is very important when considering adsorption effects.…”

Section: Introductionmentioning

confidence: 99%

Removal of Cr(VI) from Aqueous Solution by Polypyrrole/Hollow Mesoporous Silica Particles

Gao

Liu

et al. 2020

Nanomaterials

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“…Chemically modified banana peels [25] 0.12 depends on concentration of chromium and pH of chromium solution. The chromium adsorption of IDA-GMA-PE adsorbent reached to 83.75 mg/g.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Iminodiacetate Group Containing Nonwoven Polyethylene Fabrics and Its Application in Chromium Adsorption

et al. 2017

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“…Acrylonitrile grafted banana peels greatly improve the adsorption capacity at 96%. The optimum conditions for adsorption of Cr(VI) was pH 3, adsorbent dose 4 g/L, concentration 400 mg/L and contact time of 120 min [32] . Results also showed that removing of peptic and viscous compounds, and the incorporation of a side chain (-CH2-CH-C=N) play crucial role in the enhancement of removal capacity [32] .…”

Section: Adsorptionmentioning

confidence: 99%

“…The optimum conditions for adsorption of Cr(VI) was pH 3, adsorbent dose 4 g/L, concentration 400 mg/L and contact time of 120 min [32] . Results also showed that removing of peptic and viscous compounds, and the incorporation of a side chain (-CH2-CH-C=N) play crucial role in the enhancement of removal capacity [32] . Groundnut hull was also considered as potential biosorbent in Owalude's study [33] .…”

Section: Adsorptionmentioning

confidence: 99%

Physio-chemical treatment technologies for chromium removal

Zhang¹,

Li²

2017

Proceedings of the 2016 4th International Conference on Renewable Energy and Environmental Technology (ICREET 2016)

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Abstract. The article reviews the technical applicability of various physio-chemical treatments for the removal of hexavalent chromium (Cr(VI)) from aqueous solution. A particular focus is given to membrane electrolysis, photocatalytic reduction, adsorption and the application of nanotechnology in Cr(VI) removal. About 50 published studies (2011)(2012)(2013)(2014)(2015)(2016)(2017) are reviewed. Liquid membrane and electrodialysis were combined. Metal-organic frameworks (MOFs) emerged to enhance photocatalytic reduction. It is evident that adsorption is the most frequently studied and widely applied for the treatment of Cr(VI). And nanotechnology is mainly applied to nanoadsorbent which exhibited both reduction and adsorption capabilities. In general, further researches on methods with cost-effectiveness, technical-applicability, and plant-simplicity are vital for heavy metal removal such as chromium.

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Removal of chromium (VI) from aqueous medium using chemically modified banana peels as efficient low-cost adsorbent

Cited by 188 publications

References 38 publications

Removal of Cr(VI) from Aqueous Solution by Polypyrrole/Hollow Mesoporous Silica Particles

Removal of Cr(VI) from Aqueous Solution by Polypyrrole/Hollow Mesoporous Silica Particles

Preparation and Characterization of Iminodiacetate Group Containing Nonwoven Polyethylene Fabrics and Its Application in Chromium Adsorption

Physio-chemical treatment technologies for chromium removal

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