AI Summary & Key Takeaways
AI InsightIt was found that overall process was best described by the pseudo second order model.
📌 3 Key Takeaways
Abstract
In this study, adsorption properties of the water treatment sludge generated from lime-coagulation process has been investigated as an adsorbent for the removal of Basic Blue 41 and Lanaset Yellow 4GN dyestuffs. Initial sorption tests showed that both dyes adsorbed by ferric sulfate sludge. Data from equilibrium studies were applied to both Langmuir and Freundlich models and related constants were determined for each dye. For the dye-sludge system, Basic blue 41 fit both models while Lanaset Yellow 4GN was only described by Freundlich model. Kinetic studies were also performed for various initial dye concentrations. The kinetics of sorption has also been analyzed by three kinetic models. It was found that overall process was best described by the pseudo second order model. Gibbs free energies for both dyes were also calculated and negative values were found.
Özet
Bu çalısmada mesrubat üretiminde kullanılmak üzere, kireç koagülasyon yöntemi kullanılarak su hazırlanması sırasında açığa çıkan demir sülfat çamurunun Basic Blue 41 ve Lanaset Yellow 4GN boyar maddelerini adsorblama özelliği incelenmistir. Baslangıç adsorbsiyon testlerinden her iki boyar maddenin de çamur tarafından adsorblandığı görülmüstür. Elde edilen veriler Langmuir ve Freundlich modellerine uygulanmıs ve Basic Blue 41 boyar maddesinin hem Langmuir ve hem de Freundlich modeline uyduğu ancak Lanaset Yellow 4GN boyar maddesinin ise yalnızca Freundlich modeline uyduğu görülmüs ve her iki boyar madde içinde ilgili modellere ait sabitler elde edilmistir. Ayrıca, elde edilen veriler çesitli kinetik modellere de uygulanmıstır. Buna göre her iki boyar madde için de adsorbsiyonun en iyi yalancı ikinci derece model tarafından temsil edildiği görülmüstür. Elde edilen verilerden Gibbs serbest enerjisi de hesaplanmıs ve negatif değerler bulunmustur.