TY  - JOUR
TT  - DECOLORIZATION OF TOXIC DYES FROM AQUEOUS SOLUTIONS WITH CHITOSAN COMPOSITE BEADS
AU  - Çınar, Seda
AU  - Aydemır, Tülin
AU  - Eser, Ahmet
AU  - Dınçer, Ayşe
PY  - 2017
DA  - February
JF  - The Turkish Journal Of Occupational / Environmental Medicine and Safety
JO  - turjoem
PB  - Engin TUTKUN
WT  - DergiPark
SN  - 2149-4711
SP  - 124
EP  - 124
VL  - Volume 2
IS  - İssue 1 (1)
KW  - DECOLORIZATION OF TOXIC DYES FROM AQUEOUS SOLUTIONS WITH CHITOSAN COMPOSITE BEADS
N2  - Nowadays, theunaesthetic look of dyes and their toxicological effects have drawnconsiderable attention toward the contamination caused by industrial effluents.The disposal of dye effluents has always been a major problem to solve and inthe past many methods dealing with color removal in textile effluents have beentested. Various methods for removal of toxic dyes from wastewaters have beenreported in the literature. Chitosan is wellestablished as an excellent natural adsorbent because its amine (–NH2) andhydroxyl (–OH) groups may serve as coordination sites to form complexes withvarious effluent. In recent years, a great number of studies on chitosanbiosorbents for dye removal have demonstrated.In this study,cross linked chitosan beads were used to remove dyes from aqueous solution inbatch adsorption system. Erythrosine was selected as a model dye. Morphology ofthe chitosan beads were discussed using SEM FTIR and TGA analysis. Severalimportant parameters influencing the adsorption of Erythrosine such as contacttime, pH, temperature, and dye concentration were investigated systematicallyby batch experiments. Optimum contact time for equilibrium to be achieved isfound to be 3 hours. Maximum adsorption capacity of dye was observed at pH 3.5and 30°C and calculated as 35.83 mg/g. The obtained results showed that theequilibrium adsorption behavior of Erythrosine on chitosan beads can be appliedto the Langmuir model. Thermodynamic parameters, change in free energy,enthalpy and entropy were also evaluated, indicating that the adsorption ofErythrosine was spontaneous and endothermic in nature.
CR  - Seda ÇINAR, Tülin AYDEMIR, Ahmet ESER, Ayşe DINÇER
CR  - Celal Bayar University, Faculty of Science and Arts, Chemistry Department 45140 MANISA
UR  - https://dergipark.org.tr/en/pub/turjoem/issue//305883
L1  - https://dergipark.org.tr/en/download/article-file/293542
ER  -