Adsorption Removal of Copper and Nickel Ions from Wastewater by Ammonia Modified Cotton Stalks

Jing Li; Dong Mei Jia; Chang Hai Li; Bao Qing Yu

doi:10.4028/www.scientific.net/AMR.955-959.2440

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959Adsorption Removal of Copper and Nickel Ions from...

Adsorption Removal of Copper and Nickel Ions from Wastewater by Ammonia Modified Cotton Stalks

Abstract:

The ammonia modified cotton stalks (CS) were utilized to adsorb the Ni²⁺ and Cu²⁺ ions from wastewaters, and the effect parameters (i.e. pH, contact time, adsorbent dose, and temperature) were also investigated by batch adsorption experiments. The maximum uptake was attained, i.e., 99.4% and 98.8%, respectively, for nickel and copper ions, under the optimum conditions (adsorbent dose: 10 g/L; pH: 6.0 (Ni²⁺), 5.0 (Cu²⁺); t: 75min; T: 20 °C) when the initial concentration of heavy metal ions was 20 mg/L. The adsorption process of nickel and copper ions on ammonia modified CS was well described by the pseudo-second-order kinetic model.

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

2440-2443

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.2440

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Online since:

June 2014

Authors:

Jing Li, Dong Mei Jia, Chang Hai Li, Bao Qing Yu

Keywords:

Adsorption, Ammonia, Cotton Stalk, Kinetic

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