Removal of Nickel (II) from Wastewater and Aqueous Solution Using Activated Carbon from Brown Alga Sargassum SP.

Subject Areas : environmental management

akbar esmaeili ¹ , samira ghasemi ² , pari beirami ³ , abdolhossein rostaeiyan ⁴ , farnaz rafiei ⁵

1 - گروه مهندسی شیمی، دانشکده فنی ومهندسی دانشکده فنی ومهندسی، دانشگاه آزاد اسلامی واحد تهران شمال*(مسوول مکاتبات).
2 - گروه شیمی دریا، دانشکده علوم و فنون دریایی، دانشگاه آزاد اسلامی واحد تهران شمال
3 - گروه شیمی دریا، دانشکده علوم و فنون دریایی، دانشگاه آزاد اسلامی واحد تهران شمال
4 - گروه شیمی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات.
5 - - گروه شیمی دریا، دانشکده علوم و فنون دریایی، دانشگاه آزاد اسلامی واحد تهران شمال

Received: 2008-12-30 Accepted : 2009-05-17 Published : 2014-12-22

Keywords: Biosorption, nickel, Sargassum, Wastewater, Activated Carbon, Isotherm model,

Abstract :

In this work, the batch removal of Ni ions from aqueous solution and wastewater using marine brown alga Sargassum was investigated. Activated carbon, prepared from Sargassum by acid decomposition, was also used for the removal of Ni  from aqueous solution and wastewater. The effects of pH, biosorption time, adsorbent dose, metal ions concentration were considered. The most effective pH was found to be 5.0. The maximum uptake rates for nickel with initial concentrations of 30, 50 and 70 mg/L were obtained to be 97.8% , 84.53% and 60.34% respectively at pH=5. The equilibrium adsorption data were fitted to isotherm models. The adsorption followed second order kinetic. This study shows the application of activated carbon as valuable material for the removal of Ni from aqueous solution and wastewater

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