Application of four novel fungal strains to remove arsenic from contaminated water in batch and column modes

Jaiswal, Virendra; Saxena, Sangeeta; Kaur, Ispreet; Dubey, Priya; Nand, Sampurna; Naseem, Mariya; Singh, Suman; Srivastava, Pankaj; Barik, Saroj Kanta

doi:10.1016/j.jhazmat.2018.04.053

Cited by 31 publications

(11 citation statements)

References 36 publications

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“…Desorption experiments were carried out using HCl as a desorption agent. [27] In a beaker, containing 0.1 M HCl (250 ml) and the consumed GO-BDs was kept for 24 h. To test the reusability of the adsorbent using de-ionized water, the same adsorbent was washed, and desorption process was recapitulated thrice. The amount of As(III) ion renounced from GO-BDs after the washing process, again examined.…”

Section: Adsorption and Desorption Experiments Using The Batch Methodsmentioning

confidence: 99%

Facile synthesis of reusable graphene oxide composite magnetic beads for removal of arsenic (III)

2021

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Consumption of As(III) in drinking water is a severe problem, and more than 180 million people are suffering worldwide. Therefore, developing an affordable technique to remove As(III) from drinking water is essential to protect human health. In this work, we report chitosan-iron oxide-graphene oxide composite beads (GO-BDs) for the removal of As(III) from the drinking water. The incorporation of chitosan and graphene oxide (GO) provides better physical strength and stability to the GO-BDs. Prepared GO-BDs were characterized using different characterization techniques. X-Ray diffraction (XRD) spectra show the iron oxide nanoparticles were successfully linked with graphene oxide. The size of the beads confirmed by scanning electron microscopy (SEM) and found to be 1 mm. Elemental mapping of beads show the uniform dispersion of GO/iron oxide on the surface of the beads. The adsorption of As(III) occurs rapidly and attain equilibrium condition in <6 h after removing As(III) from the water within the permissible limit. Effect of water pH, time, temperature, adsorbent dosage, and concentration of the dose have been studied in detail for arsenic removal. Coexisting ions show negligible influence on As(III) removal. Langmuir and Freundlich isotherms were also examined. This study provides the application of GO-BDs for As(III) removal from contaminated drinking water.

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Section: Adsorption and Desorption Experiments Using The Batch Methodsmentioning

confidence: 99%

Facile synthesis of reusable graphene oxide composite magnetic beads for removal of arsenic (III)

2021

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“…This behaviour can be attributed to the raise in the driving force of As (V) ions concentration between the MPP-AC and the aqueous medium that overcomes the mass transfer resistances (Bhatnagar et al, 2009). Previous studies have been reported that adsorption of arsenic in aqueous medium using different adsorbents is affected by initial concentration, when the latter is increasing the adsorption capacity increased (Jaiswal et al, 2018;Saadon et al, 2018). Figure 2.…”

Section: Fitting Of Process Models and Statistical Analysismentioning

confidence: 97%

Optimization of Arsenic Adsorption onto Cativated Carbon Dreived from Potato Peel Using Response Surfase Methodology

Haji

Mohammed

2019

SJUOZ

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The present study was designed to optimizing the adsorption of As (V) onto potato peel derived activated carbon (MPP-AC) by employing response surface method and central composite design. Adsorbent of cheap and locally available potato residue was produced based on chemical activation with H3PO4 subsequently carbonization to produce the porous activated carbon. The individual and interactive effects of five variables including initial arsenic concentration, temperature, time, dosage amount and pH of the medium were investigated. Based on the statistic analysis (ANOVA), the quadratic model was developed associating the adsorption capacity (qe). The optimum conditions were obtained of 9.98 mg L-1 of initial As (V) concentration, 28 °C of temperature, 39.7 min of time, 0.97 g of adsorbent dose and 7.3 of pH. The maximum adsorption capacity was 0.27 mg g-1 and 76.5% removal efficiency. The equilibrium isotherms and kinetic studies for estimating the mechanism of process demonstrated a good fit to Langmuir model and the pseudo-second order, respectively. The results of this study showed that the feasibility of central composite design for control adsorption process and indicated the use of activated carbon of potato residue have important implications for As (V) removal.

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“…The FT-IR analysis allows identifying the chemical groups present on the membrane ( Figure AM4, see AMS). For raw membrane, the main bands are identified: the strong and wide band at 3200-3500 cm −1 is assigned to the overlapping of O\ \H and N\ \H stretching vibrations [26]; the weak band around 2927 cm −1 is attributed to the stretching vibration of C\ \H [27]. Strong absorption band at 1596 cm −1 and medium absorption band at 1317 cm −1 are characteristic peaks of overlapping of C_N and N\ \H vibration and C\ \N stretching vibration, respectively.…”

Section: Properties Of Membranementioning

confidence: 99%

Se(VI) sorption from aqueous solution using alginate/polyethylenimine membranes: Sorption performance and mechanism

Mo¹,

Vincent²,

Faur

et al. 2020

International Journal of Biological Macromolecules

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New high percolating alginate membranes are designed without using sophisticated drying methods: negatively charged alginate reacts with positively charged polyethylenimine (PEI), prior to be crosslinked with glutaraldehyde and air-dried. This is sufficient to obtain a highly macroporous structured membrane. Highly percolating properties of these new A-PEI membranes make the material applicable in natural drainage systems. The high density of amine groups in composite membranes explain their high affinity for anions in acidic solutions. FTIR, SEM-EDX and XPS analysis are used to explore the sorption mechanism. Se(VI) is sorbed through electrostatic attraction between positive amine groups and negative selenium anions; in a second step, bound Se(VI) is reduced by amine and hydroxyl groups in acidic conditions. A-PEI membranes are successfully used for recovering Se(VI) anions at pH 2. The maximum sorption capacity is close to 83 mg Se g −1 ; the sorption isotherm is described by the Sips and Langmuir equations. The membranes are poorly sensitive to flow rate in the range 15-50 mL min −1. The kinetic profiles are fitted by the pseudo-first order rate equation. Solute desorption is operated using NaOH solutions; the sorbent shows a remarkable stability in sorption and desorption properties for a minimum of 4 cycles.

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Application of four novel fungal strains to remove arsenic from contaminated water in batch and column modes

Cited by 31 publications

References 36 publications

Facile synthesis of reusable graphene oxide composite magnetic beads for removal of arsenic (III)

Facile synthesis of reusable graphene oxide composite magnetic beads for removal of arsenic (III)

Optimization of Arsenic Adsorption onto Cativated Carbon Dreived from Potato Peel Using Response Surfase Methodology

Se(VI) sorption from aqueous solution using alginate/polyethylenimine membranes: Sorption performance and mechanism

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