Kağıt geri dönüşüm atık sularının mikrodalga teknolojisi ile arıtılması

Yıl 2023, , 134 - 138, 28.06.2023

Uğur Özkan , Halil Turgut Şahin

https://doi.org/10.18182/tjf.1268140

Cited By: 2

Öz

Bu çalışmada, atık kağıt geri dönüşümü esnasında oluşan atık suyun bertaraf edilmesinde alternatif bir yaklaşım olarak, ev tipi mikrodalga fırınından faydalanılmıştır. Laboratuvar şartlarında hazırlanmış kâğıt geri dönüşüm atık sularına önceden belirlenmiş mikrodalga parametreleri (güç ve zaman) uygulanarak, seçilen deneysel parametrelerin değişimleri karşılaştırmalı olarak incelenmiştir. Ölçülen tüm pH değerlerinin, arıtma koşullarından bağımsız olarak, pH 7.10 (BII) ile pH 7.53 (DIV) arasında çok dar ve hafif alkali aralıkta (>7.0) olduğu bulunmuştur. Ayrıca en yüksek Elektriksel iletkenlik (EC) farkının da 46 µS/cm olduğu anlaşılmıştır. Mikrodalga işleminde uygulanan dört güç seviyesinin (90-, 180-, 270-, 360 Watt) en uzun işlem zamanında (60 saniye), kontrolden (C1: 195 mV) daha yüksek ORP değerleri gözlemlenmişken, ORP değeri 213 mV olan (360 W ve 60 saniye (DIV) örnek en yüksek değeri vermiştir. Ayrıca, örnek DIV'nin en yüksek pH, EC, ORP ve TDS değerini (181 ppm) göstermesi dikkat çekicidir. Kontrol örneğinin bulanıklık değeri 42.5 NTU bulunmuştur. Bununla birlikte, tüm MW güç seviyelerinde ve sürelerinde, MW'nin bulanıklık üzerinde bulanıklık giderimi etkisinin oldukça belirgin olduğu hesaplanmıştır. 22.2 NTU ile en düşük bulanıklık değeri yani en yüksek bulanıklık giderimi, yine örnek DIV ile bulunmuştur (DIV: %86.2). Bu çalışma ile, MW ışınlamasının, atık kağıt geri dönüşüm esnasından oluşan atık su kalitesinin tanımlanmasına yardımcı olabilmesi ve seçilmiş fizikokimyasal parametrelerle değişimlerin ölçülebilmesi bakımından önemlidir.

Anahtar Kelimeler

Mikrodalga, Atık su, Kâğıt geri dönüşüm, Bulanıklık

Treatment of paper recycling wastewater using microwave technology

Öz

In this study, we conducted a novel method by using a household type Microwave Owen (MW) under selected operational parameters (power and time) to treat wastewater from paper recycling under laboratory conditions. We seek to evaluate changes of the MW experimental parameters, comparatively. All measured pH values were found to be in very narrow range, between pH 7.10 (BII) and pH 7.53 (DIV), in slightly alkaline range (>7.0). However, the highest Electrical Conductivity (EC) difference was found to be 46 µS/cm. The 60 seconds MW irradiated samples at four power levels (90-, 180-, 270-, 360 Watts) showed higher ORP values than control (C1: 195 mV) while the highest ORP value of 213 mV was found with sample treated 360 W and 60 seconds (DIV). It is notable that sample DIV showed the highest pH, EC, ORP and TDS value. The control sample had turbidity value of 42.5 NTU. In all MW power levels and durations, turbidity removal was apparent which MW impact on turbidity. The lowest turbidity value of 22.2 NTU was found with sample DIV which was the highest rate of turbidity removal efficiency (DIV: 86.2%). The present study revealed that MW irradiation could be used to effectively reduce the selected physicochemical parameters that may assist in the description of wastewater quality.

Anahtar Kelimeler

Microwave, Wastewater, Paper recycling, Turbidity

Kaynakça

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