Atilla MURATHAN, Fatih AKKURT, Ahmet ALICILAR, Metin GÜRÜ

Baca gazlarındaki azot oksitlerin bentonit üzerine adsorpsiyon yoluyla dolgulu kolonlarda giderilmesi

Azot oksitler (NOx) güçlü emisyon kaynaklandır. Zehirleyici özelliğinden dolayı, baca gazlarında bulunan azot oksitlerin uzaklaştırılması gerekir. Bu çalışmada baca gazlarındaki NO2 gazının dolgulu kolonda tutulması araştırıldı. Bu amaçla bakır ile nitrik asit etkileştirilerek NO2 gazı üretildi. Oluşan bu gaz, hava ile karıştırıldı ve değişik konsantrasyonlarda dolgulu kolona gönderildi. Adsorbent olarak bentonit, destek dolgu olarak cam bilyeler kullanıldı. Adsorplanmadan kolonu terk eden NO2 gazlanrı su ile doldurulmuş olan seri haldeki iki yıkama şişesinden geçirilerek absorplandı. Yapılan çalışma sonunda adsorpsiyon veriminin başlangıç konsantrasyonundaki artışa bağlı olarak azaldığı gözlendi ve bentonitin adsorpsiyon kapasitesi kg kütle başına 3 mol NO2 olarak tespit edildi.

Removal of nitrogen oxides in stack gases on bentonite via adsorption in packed columns

Nitrogen oxides (NOX) are powerful emission resources. Because of then- toxic properties, nitrogen oxides in stack gases must be removed. In this study, removal of NO2 in stack gases was investigated in packed column. For this aim, NO2 gases were produced via reacting copper and nitric acid. The formed gas was mixtured with air, and mixture which has various concentrations was sent to the packed column. Bentonite was used as an adsorbent, and glass beads were the supporting material. The NO2 gases leaving the column which were not adsorbed on the packing were absorbed by passing from two series washing bottles filled to the water. In this study, it was observed that the adsorption yield decreased with an increase hi initial concentration, and the adsorption capacity of bentonite was determined 3 moles of NO2 per kg.

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