Abstract
The biosorption process of anionic dye Alizarin Red S (ARS) and cationic dye methylene blue (MB) as a function of solution pH, initial concentration and contact time onto olive stone (OS) biomass has been investigated. The main objectives of the current study are to: (i) study the chemistry and the mechanism of ARS and MB biosorption onto olive stone and the type of OS–ARS, MB interactions occurring, (ii) study the biosorption equilibrium and kinetic experimental data required for the design and operation of column reactors. Equilibrium biosorption isotherms and kinetics were also examined. Experimental equilibrium data were fitted to four different isotherms by non-linear regression method, however, the biosorption experimental data for ARS and MB dyes were well interpreted by the Temkin and Langmuir isotherms, respectively. The maximum monolayer adsorption capacity for ARS and MB dyes were 109.0 and 102.6 mg/g, respectively. The kinetic data of the two dyes could be better described by the pseudo second-order model. The data showed that olive stone can be effectively used for removing dyes from wastewater.
Original language | English |
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Number of pages | 5 |
Publication status | Published - Mar 2015 |
Event | The Third Internation Conference on Water, Energy and Environment (ICWEE) - American University of Sharjah, Sharjah, United Arab Emirates Duration: 24 Mar 2015 → 26 Mar 2015 |
Conference
Conference | The Third Internation Conference on Water, Energy and Environment (ICWEE) |
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Country/Territory | United Arab Emirates |
City | Sharjah |
Period | 24/03/2015 → 26/03/2015 |
Keywords
- anionic dye Alizarin
- cationic dye methylene blue
- biosorption
- olive stone