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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Study of COD Adsorption on Deferent Activated Carbon Prepared from the Date Stones of the South of Algeria
verfasst von : Ouahiba Belaid, Ahmed A. Bebba, Zineb Barhoum, Imane Raache
Erschienen in: Proceedings of the Third International Symposium on Materials and Sustainable Development
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Abstract
For the aim of valorization of local lignocelluloses natural residue from different activated carbon with a high surface areas were prepared by chemical activation using the phosphoric acid H3PO4 from the date stones of two locals varieties (Ghars and Mech Degla) of the regions of Biskra and El Oued in the south of Algeria and characterized by different techniques, the textural properties determined by N2 adsorption at 77 k and scanning electronic microscopy SEM. The surface function was found by the Boehm method and the elemental analysis of activated carbons was carried out.
The adsorption of the organic pollutant (COD) of wastewater from the common Sidi Khouiled (Ouargla) by the activated carbons CGB1, CGE1, CMB1 has been studied. Under the process conditions there is a maximum absorption capacity of this pollutant 62.5 mg/g for CGB1. The experimental data were well described by the isothermal equilibrium equation Langmuir type II and the calculated adsorption capacity was 71.43 mg/g comparable by models Freundlich and Temkin. The kinetics of COD adsorption obeys the intra cellular model.