BIOSORPTION OF METHYL ORANGE DYE BY YELLOW MUSTARD SEEDS (Sinapis Alba L.)

Yıl 2016, Cilt: 12 Sayı: 2, 15 - 15, 01.08.2016

Serpil Savcı

Öz

Dyes are the common contaminants in the aquatic environment even at trace levels. One of
the most dangerous carcinogenic organic materials is acidic-anionic dyes. Methyl orange is an acid
base indicator. Textile, printing, paper and food industries have been used Methyl orange.
Biosorption can be used for the removal of dyes from wastewater. Biological materials such as
aquatic plants, seeds, agriculture wastes, microorganisms, fungi and algae are used in this technique
as a biosorbent. Both living and non-living materials can be used for dye removal. Biosorbent
materials can easily available and low-cost. In this study, the biosorption of toxic methyl orange from
aqueous effluents by yellow mustard seeds (Sinapis alba L.) was studied in a batch system.
Equilibrium tests were done by contacting 1.0 g of with 30 mL of Methyl orange solution at different
initials concentrations at room temperature (25 0C). The supernatant was centrifuged at 4000 rpm and
10 minutes in a centifugal (Hettich Zentrifugen) after batch tests. The absorbance of Methyl orange
can be measured at 467 nm by UV–vis spectrophotometer (T 90). The initial dye concentrations for
the contact time experiments was 50, 100, 200, 300 and 400 mg/L. The incubation times ranged from
5 to 160 min. The effects of initial dye concentration, kinetic and isotherm behaviors were
investigated. Data obtained from batch studies applied to Langmuir and Freundlich isotherm models.
Freundlich model (R2=0.9965) was well described for the system. Adsorption thermodynamic was
also studied. The results showed that the yellow mustard seeds (Sinapis alba L.) can be successfully
used for the removal of methyl orange.

Anahtar Kelimeler

Dyestuff, Biosorption, Methyl Orange, Isotherm