Rapid removal of cobalt ion from aqueous solutions by almond green hull

Ahmadpour, Ali; Tahmasbi, M.; Bastami, Tahereh Rohani; Besharati, J. Amel

doi:10.1016/j.jhazmat.2008.11.103

Cited by 164 publications

(41 citation statements)

References 34 publications

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“…The decrease in the rate of Cr (VI) uptake at adsorbent dose greater that 2 mg/L may be due to competition of the Cr (VI) ion for the sites available [42]. Similar results are also reported by researchers for a variety of batch experiments on sorption [29,36,[43][44][45]. …”

Section: Effect Of Biosorbent Dosage On Cr (Vi) Uptakesupporting

confidence: 83%

Removal of chromium (VI) from aqueous solution using chemically modified orange (citrus cinensis) peel

Mandina¹

2013

IOSR-JAC

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of Cr (VI) ions increased with increase in contact time and remained constant after an equilibrium time of 180 min. The removal of Cr (VI) ions increased with increase in biosorbent concentration with the optimal adsorbent dosage at 4.0 mg/L. The increase in initial Cr (VI) ion concentration led to an increase in the percentage removal of Cr (VI). The adsorption data fitted well with the Freundlich isotherm model with

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Section: Effect Of Biosorbent Dosage On Cr (Vi) Uptakesupporting

confidence: 83%

Removal of chromium (VI) from aqueous solution using chemically modified orange (citrus cinensis) peel

Mandina¹

2013

IOSR-JAC

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“…Continuous exposure to cobalt results in paralysis, diarrhea, low blood pressure, lung irritation, bone defects and even cancer (Awadalla and Pesic 1992;Parab et al 2006;Ahmadpour et al 2009). The permissible limit of cobalt in wastewater from industry is 1.0 mg/L, and in potable water, it is 0.05 mg/L (Manohar et al 2006; the environmental management (water quality standards) regulations 2007.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of cobalt ions on raw and alkali-treated lemon peels

Singh

Shukla

2015

Int. J. Environ. Sci. Technol.

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Batch-wise biosorption of Co(II) from aqueous cobalt nitrate solution of different concentrations has been carried out on raw and NaOH-treated lemon peels. They were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, thermogravimetric analysis and Brunauer-Emmett-Teller surface area analysis. The influence of biosorbent dose, pH, contact time and temperature on the adsorption process has been studied. Maximum adsorption was observed at pH 6. The equilibrium adsorption on raw and NaOH-treated lemon peels was achieved in 150 and 210 min, the maximum adsorption capacity being 20.83 and 35.71 mg/g, respectively. Energy-dispersive X-ray spectroscopy and desorption study confirmed that the mechanism of adsorption is ion exchange. The Langmuir isotherm and pseudosecond-order kinetic model gave the best fit for the adsorption of Co(II). The desorption was found to be more than 96 % using 0.1 N HCl, and the adsorbent could be reused three times with intermediate alkaline regeneration stage. Experiments to establish the effect of competing metal ions on biosorption capacity were also performed. Thus, NaOH-treated lemon peels have shown the potential as a good biosorbent for treating industrial wastewater at low cobalt concentration.

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“…The experimental data indicate that, the adsorption capacity of PA-MPC increased by increasing contact time. This is probably due to the higher contact between the surface of PA-MPC and uranium ions [28]. The obtained data also reveals that the initial uranium concentration has a significant role on the adsorption capacity, where by increasing the concentration of uranium ions the adsorption capacity increases.…”

Section: Effect Of Contact Timementioning

confidence: 66%

Preparation of Poly-Aniline-Magnetic Porous Carbon Composite for Using as Uranium Adsorbent

Gado¹

2017

AJMSP

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Abstract:Rice husk as one of the agricultural by-products has been used as a starting material for the production of porous carbon (PC), the obtained porous carbon has been modified by poly aniline and magnetized to form poly aniline magnetic porous carbon composite (PA-MPC). The prepared PA-MPC has been characterized and examined for uranium adsorption from its pregnant solutions. The effect of the controlling parameters (pH; Contact time, temperature, initial uranium concentration, and adsorbent dosage) have been optimized. The obtained results indicate that the adsorption is pH dependant. The equilibrium data were well described by langmuir isotherm with theoretical capacity 94.3 mg/l at room temperature. These results demonstrate the potential use of this adsorbent for uranium ions removal from its pregnant solutions.

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Rapid removal of cobalt ion from aqueous solutions by almond green hull

Cited by 164 publications

References 34 publications

Removal of chromium (VI) from aqueous solution using chemically modified orange (citrus cinensis) peel

Removal of chromium (VI) from aqueous solution using chemically modified orange (citrus cinensis) peel

Adsorptive removal of cobalt ions on raw and alkali-treated lemon peels

Preparation of Poly-Aniline-Magnetic Porous Carbon Composite for Using as Uranium Adsorbent

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