Atık Yumurta Kartonlarının Geri Dönüşümünden Kaynaklanan Atık Suyun Santrifüjleme Sonrası Kirlilik Parametrelerinin Değerlendirilmesi

Öz

Bu çalışma, atık yumurta kartonu geri dönüşümünde oluşan atık suyun katı-sıvı fiziksel faz ayrıştırılması için santrifüjleme yönteminin etkinliğini araştırılmasıdr. Atık su deşarjının çevresel etkileri, özellikle kâğıt geri dönüşüm sektöründe önemli bir sorun teşkil etmektedir. Bu bağlamda, santrifüjleme işlemi ile elde edilen atıksularda katı-sıvı faz ayrıştırılması yapılarak atıksuyun kirlilik potansiyeli incelenmiştir. Çalışmada, atık yumurta kartonlarının geri dönüşümü sırasında labaratuvar ortamında elde edilen atıksu, farklı çalışma hızlarında (1000 RPM ve 3000 RPM) ve sürelerde (1-10 dakika) santrifüjleme işlemine tabi tutulmuştur. Çalışmada pH, elektriksel iletkenlik, toplam çözünmüş katı madde, askıda katı madde, kimyasal oksijen ihtiyacı, bulanıklık, oksidasyon-redüksiyon potansiyeli ve çözünmüş oksijen gibi su kalitesi parametreleri analiz edilmiştir. Ayrıca, atıksuların kapsamlı etkisini değerlendirmek için Fourier Dönüşümlü Kızılötesi (FT-IR) spektroskopisi ve UV-Vis spektrofotometri gibi analitik metotlar kullanılmıştır. Deneysel bulgular incelendiğinde, santrifüjleme işlemi ile atık suyun ayrıştırılması sonucunda kontrol örneklerinde 580 mg/L olan KOİ değeri 265 ve 247 mg/L'ye, 236 mg/L olan AKM değeri 46 ve 27 mg/L'ye, 52 NTU olan bulanıklık değeri ise 17 ve 9 NTU'ya düşürülmüştür. 6,5-7,1 ve 6,3-6,7 olan pH değerlerinde ise önemli bir değişiklik olmamıştır. Elde edilen sonuçlar, istatistik olarak değerlendirilmiş ve korelasyon analizi yapılmıştır. Bu sonuçlar santrifüjleme işlemi ile atıksudaki askıda katı maddeleri, faz olarak ayrıştırmış ve fiziksel olarak bulanıklığa etki ettiğini göstermiştir. Daha yüksek santrifüj hızlarında ise (3000 RPM) daha fazla faz ayrışımın olduğu ve 1000 RPM hızında yapılan işlemlere kıyasla daha stabil performans oluştuğu anlaşılmıştır. Sonuç olarak, çalışmada kâğıt geridönüşüm esnasında elde edilen atıksuyun santrifüjleme yöntemi ile çeşitli sürelerde ve hızlarda faz ayrıştırılmasında, fiziksel olarak kirlilik parametrelerini belirlemede kolaylık sağlamıştır.

Anahtar Kelimeler

• Santrifüjleme
• Atıksu
• Geridönüşüm
• Atık yumurta kartonu

Destekleyen Kurum

TÜBİTAK

Teşekkür

Bu çalışma Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK) tarafından 2209-A Üniversite Öğrencileri Araştırma Projeleri Destekleme Programı kapsamında 1919B012316184 numaralı proje ile desteklenmiştir. Yazarlar, bu araştırmaya sağladığı maddi destek ve katkı için TÜBİTAK'a teşekkür eder.

Evaluation of Pollution Parameters of Wastewater from Recycling of Waste Egg Cartons after Centrifugation

Öz

This study investigates the effectiveness of centrifugation for the solid-liquid physical phase separation of wastewater generated during the recycling of waste egg cartons. The environmental impacts of wastewater discharge constitute a significant problem, particularly in the paper recycling sector. In this context, the pollution potential of wastewater obtained through centrifugation was examined by performing solid-liquid phase separation. In the study, wastewater obtained in a laboratory environment during the recycling of waste egg cartons was subjected to centrifugation at different operating speeds (1000 RPM and 3000 RPM) and durations (1-10 minutes). Water quality parameters such as pH, electrical conductivity, total dissolved solids, suspended solids, chemical oxygen demand, turbidity, oxidation-reduction potential, and dissolved oxygen were analyzed. In addition, analytical methods such as Fourier Transform Infrared (FT-IR) spectroscopy and UV-Vis spectrophotometry were used to evaluate the comprehensive impact of wastewater. When the experimental findings were examined, it was observed that as a result of separating the wastewater by centrifugation, the COD value decreased from 580 mg/L to 265 and 247 mg/L, the Suspended Solids (SS) value from 236 mg/L to 46 and 27 mg/L, and the turbidity value from 52 NTU to 17 and 9 NTU in the control samples. There was no significant change in pH values of 6.5-7.1 and 6.3-6.7. The results obtained were statistically evaluated and correlation analysis was performed. These results showed that the centrifugation process separated suspended solids in wastewater in phases and physically affected turbidity. It was understood that at higher centrifugation speeds (3000 RPM), more phase separation occurred and more stable performance was achieved compared to the processes carried out at 1000 RPM. In conclusion, the study showed that the centrifugation method for phase separation of wastewater obtained during paper recycling at various durations and speeds facilitated the determination of physical pollution parameters.

Anahtar Kelimeler

• Centrifugation
• Wastewater
• Recycling
• Waste egg carton

Destekleyen Kurum

TUBITAK

Teşekkür

This study has been supported by The Scientific and Technological Research Council of Türkiye (TÜBİTAK) under the Grant Programs of University Students Research Projects Support Program 2209-A, within the Project number 1919B012316184. The authors wish to thank TÜBİTAK for financial support and contribution to this research.

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