Metal Kesme Atıksularının Arıtılmasında Elektrokimyasal Reaktöre Yenilenebilir Enerji Uygulaması: Prosesin Çift Kriterli Optimizasyonu

Abstract

Elektrokimyasal atıksu arıtma yöntemleri her türlü atıksu ve kirletici için etkin bir şekilde kullanılmaktadır. Bu proseslerin en büyük olumsuz etkilerinden biri prosesin enerji tüketimidir. Bu nedenle, çalışmanın amacı, metal kesme atıksuyundan KOİ'nin ayrıştırılması için elektrokimyasal proseslerin bir alt bölümü olarak doğrudan fotovoltaik güneş paneli entegrasyonu ile minimum enerji kullanan bir Elektrokoagülasyon (EK) seçeneği geliştirmek olarak belirlenmiştir. EC prosesinin pH, akım yoğunluğu (A.Y.) ve elektroliz süresi (E.S.) gibi işletme parametrelerini optimize etmek için çift kriterli optimizasyon seçeneği ile RSM ile Box-Behnken Tasarımı kullanılmıştır. KOİ giderimi ve enerji tüketimi modelin yanıtları olarak değerlendirilmiş ve kuadratik model ile iyi uyum göstermişlerdir. Ayrıca, tüm parametrelerin EC prosesi üzerinde etkili olduğu belirlenmiştir. Optimum koşullar pH 7,48, A.Y. 30 A/m2, E.S. 65 dakika, enerji tüketimi 3,9 kWh/m3 ve arzu edilebilirlik 0,954 olarak bulunmuştur. Optimum koşullarda, EK sürecinin enerji tüketimi kapalı ve güneşli havalarda sırasıyla %71 ve %1495 oranında güneş panelinden karşılanmıştır. Özellikle güneşli havada güneş panelinden elde edilen enerji, proses için gerekli olan enerjiden çok daha fazlasını üretmektedir.

Keywords

• Elektrokoagülasyon
• Metal kesme atıksuları
• Fotovoltaik Güneş Paneli
• Al elektrot
• Box-Behnken Tasarımı
• Yenilenebilir Enerji

Project Number

1139B421902975

A Renewable Energy Application to the Electrochemical Reactor in the Treatment of Metal Cutting Wastewater: Double Criteria Optimization of Process

Abstract

Electrochemical wastewater treatment methods are effectively used for all type of wastewaters and pollutants. One of the huge negative impact of these processes is the energy consumption of the process. Therefore, the goal of the study is to develop a minimal energy user Electrocoagulation (EC) option with an integration of a direct photovoltaic solar panel as a subsection of electrochemical processes for the degradation of low COD (Chemical Oxygen Demand) from metal cutting wastewater. To optimize the operating parameters of the EC process such as pH, current density (C.D.) and electrolysis time (E.T.) Box-Behnken Design by RSM was used with a double criterial optimization option. COD removal and energy consumption were evaluated as responses of the model and they were well-fitted with the quadratic model. Also, it was determined that all parameters are effective on EC process. Optimum conditions were found at a pH of 7.48, a C.D. of 30 A/m2, an E.T. of 65 min, an energy consumption of 3.9 kWh/m3 and a desirability of 0.954. At the optimum conditions, the energy consumption of the EC process was fulfilled from solar panel in a ratio of 71% and 1495% in overcast and sunny weather, respectively. Especially, the energy obtained by the solar panel in the sunny weather produces much more than the energy required of the process.

Keywords

• Electrocoagulation
• Metal cutting wastewater
• Photovoltaic Solar Panel
• Al electrode
• Box-Behnken Design
• Renewable energy

Supporting Institution

TÜBİTAK BİDEB

Project Number

1139B421902975

Thanks

This work was financed by the TÜBİTAK BİDEB with grant number of 1139B421902975. The authors thank to TÜBİTAK for its support.

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