Arsenic(V) sorption using chitosan/Cu(OH) 2 and chitosan/CuO composite sorbents

Elwakeel, Khalid Z.; Guibal, Eric

doi:10.1016/j.carbpol.2015.07.012

Cited by 121 publications

(52 citation statements)

References 58 publications

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“…Figure represents the FTIR spectra of NZCO, As(V) adsorbed NZCO and As(III) adsorbed NZCO. In spectrum of NZCO, the peaks at 436 cm −1 and 524 cm −1 represent the symmetric and asymmetric stretching vibration of Cu−O bonding ,. Similarly, peaks located near 422 cm −1 gives an indication of Zr−O stretching bond .…”

Section: Resultsmentioning

confidence: 99%

Exploring Nanostructured Zr/Cu Composite Oxide (NZCO) as an Efficient Adsorbent for Removal of As(III) and As(V) from Aqueous Solution

et al. 2019

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Consumption of arsenic contaminated water induces and aggravates major health problems in humans. In this report, we have successfully synthesized nanostructured Zr/Cu composite oxide (NZCO) by ultrasonically assisted hydrothermal process for total arsenic sequestration. Various batch experiments were performed with NZCO to determine its adsorption efficacy for As(III) and As(V) species. NZCO demonstrated outstanding performance in removing arsenic species from water with maximum adsorption capacities of 72.25 mg g−1 and 107.5 mg g−1 for As (III) and As (V) respectively under optimized conditions. The adsorption kinetics was closely fitted to pseudo‐second order model and adsorption isotherms were well described by D−R isotherms model. Meanwhile, the adsorption tests performed on naturally occurring ground water samples confirmed the effectiveness of NZCO in remediating total arsenic level below the prescribed limit of WHO‐MCL (0.01 mg L−1). The adsorption mechanisms study exhibits a single‐step arsenic treatment option involving electrostatic interaction and ligand exchange reactions. Various analytical techniques were used to characterize the material. Facile synthesis route combined with excellent performance make NZCO a novel adsorbent in total arsenic removal from drinking water.

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Section: Resultsmentioning

confidence: 99%

Exploring Nanostructured Zr/Cu Composite Oxide (NZCO) as an Efficient Adsorbent for Removal of As(III) and As(V) from Aqueous Solution

et al. 2019

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“…However, at pH above pH PZC , the surface of adsorbent is considered to be negatively charged and attracts cations. In these documents (Hanh et al 2015;Sharma et al 2014;Sabarudin et al 2005;Boyacı et al 2010;Liu et al 2011a, b;Elwakeel and Guibal 2015), the most appropriate pH is between 4-9 for the As(III) and 3-7 for the As(V).…”

Section: Chitosan With Othersmentioning

confidence: 98%

“…Chitosan-based ultrafiltration ceramic membrane uses the ceramic as supports, the ceramic membrane has the smallest pore diameter, and it will increase the capacity of the adsorbent by offering a certain site (Jana et al 2011). The Cu(OH) 2 /CuO with chitosan had a high efficiency for arsenic, which was contributed to two different sorption sites: (1) a strong affinity for As(V) (probably Cu(OH) 2 or CuO) and (2) a lower affinity (probably the encapsulating material) (Elwakeel and Guibal 2015). As can be noted, pH PZC is a key index, and it is closely related to the pH.…”

Section: Chitosan With Othersmentioning

confidence: 99%

“…In this part, chitosan is mainly modified by acrylonitrile (Hanh et al 2015), cerium (Sharma et al 2014), sodium silicate (Boyacı et al 2010), montmorillonite (An and Dultz 2008), pumice (Turan et al 2014), mixed material (Kartal and Imamura 2005;Sabarudin et al 2005;Shinde et al 2013;Lin et al 2008;Liu et al 2012;Dhoble et al 2011;Dhanapala and Subramanianb 2015), film forming (Jana et al 2011), and Cu(OH) 2 /CuO (Elwakeel and Guibal 2015) (Table 6). Acrylonitrile has the cyano groups (-CN), which can be converted into amidoxime groups (-C(NH 2 ) = N-OH) by treating with hydroxyl amine (NH 2 OH) to improve the sorption capacity (Hanh et al 2015).…”

Section: Chitosan With Othersmentioning

confidence: 99%

“…The most frequently used isotherm model for sorption experimental data correlations is the Langmuir sorption model (Hanh et al 2015;Turan et al 2014;Boyacı et al 2010;An and Dultz 2008;Liu et al 2011a, b;Dhoble et al 2011;Dhanapala and Subramanianb 2015;Elwakeel and Guibal 2015) because of its simplicity, which is expressed by Eq. (28).…”

Section: Sorption Isotherm Modelmentioning

confidence: 99%

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Removal of As(III) and As(V) from water by chitosan and chitosan derivatives: a review

Wang

Liu

Zheng

2016

Environ Sci Pollut Res

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As arsenic removal becomes a global concern, the development of removal processes for arsenic treatment is still a major challenge. With regard to environmental compatibility and cheapness, chitosan and chitosan derivatives are considered as a promising removal technology for arsenic. Chitosan and chitosan derivatives possess the properties of low cost and good sorption on the arsenic removal. The present review is concerned about the present understanding of the mechanisms involved in sorption processes. Further on, detailed discussions are given of the effects of various factors on the performance of chitosan and chitosan derivatives in arsenic treatment processes. Finally, special attention is paid to the future challenges of chitosan and chitosan derivatives utilized for industrial arsenic treatment.

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Giri

2021

Functionalized Nanomaterials for Catalytic Application

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Arsenic(V) sorption using chitosan/Cu(OH) 2 and chitosan/CuO composite sorbents

Cited by 121 publications

References 58 publications

Exploring Nanostructured Zr/Cu Composite Oxide (NZCO) as an Efficient Adsorbent for Removal of As(III) and As(V) from Aqueous Solution

Exploring Nanostructured Zr/Cu Composite Oxide (NZCO) as an Efficient Adsorbent for Removal of As(III) and As(V) from Aqueous Solution

Removal of As(III) and As(V) from water by chitosan and chitosan derivatives: a review

Nanotechnology for Detection and Removal of Heavy Metals From Contaminated Water

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