Adsorption of Remazol Brilliant Blue R by raw and carbonized macroalgal wastes

Year 2018, Volume: 1 Issue: 4, 40 - 46, 01.12.2018

Anil Tevfik Kocer , Benan Inan Didem Ozcimen

Abstract

In this study, adsorption
of Remazol Brilliant Blue R (RBBR) dye was carried out using Ulva lactuca, Codium fragile and their carbonization products; adsorption
kinetics and isotherms were determined. Carbonized adsorbents were produced in
a tubular furnace at the heating rate of 20˚C min^-1 and temperature
of 500 ˚C with a nitrogen flow rate of 300 ml min^-1. Adsorption was
carried out in a shaking water bath at the temperature of 25 ˚C and shaking
speed of 200 rpm for 2 h. Carbonized adsorbents have been found to have greater
adsorption capacity than raw biomass. It was seen that the adsorption lasted for
90 and 60 minutes for raw and carbonized adsorbents, respectively and then
desorption begun. Maximum adsorption was achieved with the carbonized Ulva lactuca macroalgae (2.11 mg g^-1). It has been found that the most suitable kinetic
model for all absorbents was the pseudo-second-order kinetic model. The best
fit of equilibrium data for all adsorbents was described by the Langmuir model.

Keywords

Adsorption, carbonization, macroalgae, remazol brilliant blue R

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