Phosphate Removal From Wastewater By Usıng Water Treatment
Plant Sludge
Excess phosphorus in wastewaters is one of the main causes eutrophication in receiving waterways. As a result of eutrophication, natural ecologic balance is deformed and water quallitty in lakes and gulfs is affected negatively. In this regard, both biological and physico–chemical treatment processes are used to remove phosphate from contaminated wastewater.
The object of this study was to examine the feasibility of using drinking water treatment plant sludge (alum sludge) as an adsorbent for phosphate removal from the aqueous solution. The physical and chemical characterization of the adsorbent was performed. The effects of adsorbent dose, initial phosphate concentration, contact time, initial pH, temperature on adsorption were was investigated by batch studies. Experimental equilibrium data were better fitted to the Freundlich isotherm equilibrium model. The maximum adsorption capacity (qmax) was found to be 0,76 mg/g.
Experimental data were analyzed using the pseudo–first– and second–order kinetic models, of which a pseudo second-order kinetic model was found to be superior. Phosphate removal from aqueous solution were determined in the range of 84 % by using alum sludge as a adsorbent. Thermodynamic study indicated that the phosphate adsorption onto alum sludge is spontaneous and endothermic in nature.
It was concluded that, focusing on the reduction of the environmental impact of the phosphate on receiving water bodies, wastewaters containing phosphate could be treated by using the alum sludge as an easily available and economical material.
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Tez Adı : Gübre Kullanarak Anaerobik Bir Reaktörde Biyolojik Hidrojen Üretimi
Danışman : Yard. Doç. Dr Yalçın ÖKTEM
Anabilim Dalı : Çevre Mühendisliği
Programı : -
Mezuniyet Yılı : 2013
Tez Savunma Jürisi : Yard. Doç. Dr Yalçın ÖKTEM
Prof. Dr.Fatma Gülen İSKENDER
Prof.Dr. Neşe TÜFEKÇİ
Doç. Dr.Selda Gülin POZAN
Doç. Dr.Semih NEMLİOĞLU
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