Şabazit Tipi Doğal Zeolit Kullanılarak Amonyak Gazının Uzaklaştırılması

Yıl 2022, Cilt: 26 Sayı: 1, 77 - 82, 25.04.2022

Aytaç Günal , Burcu Erdoğan

https://doi.org/10.19113/sdufenbed.954308

Öz

Bu çalışmada, Bala'dan elde edilen şabazit (CHA) ve katyon (Na+, K+, Ca+2 ve Mg+2) değiştirilmiş ve hidroklorik asitle aktifleştirilmiş formları, ortamdan amonyak giderimindeki olası kullanılabilirliklerini göstermek amacıyla incelendi. Katyon değiştirilmiş ve asitle aktiflenmiş formlar sırasıyla, 1.0 M’lık KNO3, NaNO3, Mg(NO3)2, Ca(NO3)2 ve 0.1 M ve 1.0 M’lık HCl solüsyonları kullanılarak 90 oC'de 5 saat süreyle hazırlandı. Tüm numunelerin termal ve yapısal özellikleri TG-DTA, XRD ve XRF yöntemleri ile belirlendi. Şabazit numunelerinin BET yüzey alanları (231-448 m2 g-1), mikro gözenek yüzey alanları (216.2-421.3 m2 g-1) ve mikro gözenek hacimleri (0.086-0.169 cm3 g-1) 77 K'de elde edilen N2 adsorpsiyon izotermleri ile hesaplandı. Amonyak adsorpsiyon izotermleri 3Flex-Micromeritics cihazı ile 25 °C'de volumetrik olarak elde edildi. Şabazit numunelerinin amonyak adsorpsiyon kapasiteleri (5.699-8.931 mmol g-1), sırasıyla katyon değişimi ve asit aktivasyon işlemlerinin neden olduğu içeriksel ve yapısal değişiklikler açısından karşılaştırıldı.

Anahtar Kelimeler

adsorpsiyon, şabazit, amonyak

Destekleyen Kurum

Anadolu ÜNİVERSİTESİ

Proje Numarası

1602F072

Removal of Ammonia Gas Using Chabazite Type Natural Zeolite

Öz

In this study, chabazite (CHA) from Bala and that of cation (Na+, K+, Ca2+ and Mg2+) exchanged and hydrochloric acid activated forms were investigated to demonstrate their possible usability in the ammonia removal from the environment. Cation exchanged and acid activated forms were prepared using 1.0 M solutions of KNO3, NaNO3, Mg(NO3)2, Ca(NO3)2 and 0.1 M and 1.0 M solutions of HCl at 90 oC for 5 h, respectively. The thermal and structural properties of all samples were characterized by TG-DTA, XRD and XRF methods. BET surface areas (231-448 m2 g-1), micropore surface areas (216.2-421.3 m2 g-1) and micropore volumes (0.086-0.169 cm3 g-1) of the chabazite samples were calculated by N2 adsorption isotherms at 77 K. Ammonia adsorption isotherms were obtained at 25 °C by 3Flex-Micromeritics equipment volumetrically. Ammonia adsorption capacities of the chabazite samples (5.699-8.931 mmol g-1) were compared in terms of the induced textural and structural changes as a result of cation exchange and acid activation processes, respectively.

Anahtar Kelimeler

Adsorption, Ammonia, Chabazite

Proje Numarası

1602F072

Kaynakça

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