The use of water treatment sludge gene-rated from the preparation of process water by using lime coagulation method as an adsorbent for the removal various dyestuffs.

TEZ5485Tez (Yüksek Lisans) -- Çukurova Üniversitesi, Adana, 2005.Kaynakça (s. 57-66) var.vii, 67 s. ; 29 cm.Bu çalışmada meşrubat üretiminde kullanılmak üzere, kireç koagülasyon yöntemi kullanılarak su hazırlanması sırasında açığa çıkan demir sülfat çamurunun Basic Blue 41 (BB4l) ve Lanaset Yellow 4GN (LY] boyar maddelerini adsorblama özelliği incelenıniştir. Başlangıç adsorbsiyon testlerinden her iki boyar maddenin de çamur tarafından adsoplandığı görülmüştür. Elde edilen veriler Langmuir ve Freundlich modellerine uygulannnş 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 görülmüş ve her iki boyar madde içinde sabitler elde edilmiştir. Ayrıca, elde edilen veriler çeşitli kinetik modellere de uygulanmıştır. Buna göre her iki boyar madde için de adsorbsiyonun en iyi yalancı ikinci derece model tarafından temsil edildiği görülmüştür. Elde edilen verilerden Gibbs serbest enerjisi de hesaplanmış ve negatif değerler bulunmuştur.In this study, adsorption properties of water treatment sludge as an adsorbent generated from lime-coagulation process, for the removal of Basic Blue 41 (BB4l} and Lanaset Yellow 4GN (LY 4GN) dyestııffs by sorption has been investigated. 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 4l fit both models while Lanaset Yellow 4GN (LY 4GN) was only described by Freundlich model. Kinetic studies were also performed for various initial dye concentrations. The kinetícs of sorption has been analyzed by three kinetic models, the ?rst order Lagergren model, the second order model and the pseudo second order model. It was found that overall process was best described by pseudo second order model rather than first order Lagergren, second order or real isothems. Gibbs free energies for both dyes were also calculated and negative values were found