Tavuk dışkılarının anaerobik arıtımında istatistiksel teknik kulanılarak en uygun koşulların belirlenmesi

Bu çalışmada tavuk dışkılarının anaerobik arıtımında kimyasal oksijen ihtiyacı (KOİ) giderim hızını ifade eden istatistiki bir model geliştirilmiştir. Sıcaklık, pH ve toplam katı yüzdesi $2^3$-faktöriyel deneysel tasarıma göre seçilerek, bu faktörlerin KOİ giderim hızına etkileri kesikli reaktörlerde Box-Wilson deneysel tasarım yöntemine göre incelenmiştir. Deneysel sonuçlar “Design Expert 7.0.3 Trial” paket programı ile istatistiksel olarak değerlendirilmiştir. Reaktörler eşit hacımda anaerobik özümleyici çamurla aşılanmışlardır. Geliştirilen model kullanılarak en yüksek KOİ giderim hızı, sıcaklık, pH ve toplam katı yüzdesinin sırasıyla $35^0C$, 6.9, 7.01 (g/100 g) değerlerinde 368,17 mg KOİ/L.g katı atık.gün olarak elde edilmiştir.

Determination of optimum conditions with using a statistical technique to the anaerobic digestion of hen manure

In this study, a statistical model which can be used to describe rate of reduction of chemical oxygen demand (COD) in anaerobic digestion of hen manure was developed. Temperature, pH, and total solid percent were chosen as a $2^3$-factorial experimental design and the effects of these factors on the rate of reduction of COD were examined in batch reactors according to the Box-Wilson experimental design method. Experimental results were evaluated statistically by using “Design Expert 7.0.3 Trial” package program. All reactors were inoculated with equal volume of anaerobic digester sludge. With the use of the developed model maximum rate of reduction of COD was obtained as 368,17 mg COD/L.g solid.day when temperature, pH and total solid percent were $35^0C$, 6.9, 7.01 (g/100 g) respectively.

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