Advanced Journal of Environmental Science and Technology ISSN: 2136-3468 Vol. 5(5), pp. 256-258, December, 2018.  © Advanced Scholars Journals 

Full length Research paper

The Removal Of Dyes From Textile Wastewater: A Study Of The Physical Characteristics And Adsorption Mechanisms Of Date Pits

Hadded A^1* and  M’henni F².

^*1Laboratory Studies of Thermal Ande Energy Systems, ENI Monastir, Tunisia

²research unit of Applied Chemistry And Environment, Science faculty of Monastir, Tunisia

*Corresponding Author’s Email: [email protected]

Accepted 24 october, 2018

Abstract

The feasibility of using date pits for removal of the problematic direct dyes was investigated. Direct Red75 was considered. Adsorption isotherms of date pits with direct red75 were constructed at different pH values, initial dye concentrations, solution temperature and salt addition. The experimental results were fitted to the Langmuir and Freundlich models. The measured adsorption kinetics was well described by a pseudo-second order kinetic model. Furthermore, the Langmuir isotherm model fitted the experimental equilibrium data.

Key Words: Langmuir and Freundlich models, Date pits, adsorption, direct red75 dye, kinetic models.