Elma Kabuğundan Elde Edilen Aktif Karbon ile Sulu Ortamdan 2,4,6-Trinitrotolueni Uzaklaştırma Kinetiği

Öz

2,4,6-Trinitrotoluen (TNT), dünya çapında en yaygın kullanılan yüksek güçlü patlayıcılardan biridir. Üretimi sırasında ve kullanımından sonra önemli su ve toprak kirliliğine neden olur. Bu çalışmada, 1429 m2/g BET yüzey alanına sahip elma kabuğundan elde edilen aktif karbon (APAC) kullanılarak sulu ortamdan TNT'nin giderim kinetiği incelenmiştir. TNT konsantrasyonları, Meisenheimer kompleksi oluşturarak bir UV-VIS spektrofotometresi kullanılarak ölçülmüştür. Giderim kinetiğini analiz etmek için psödo-birinci mertebeden (PFO), psödo-ikinci mertebeden (PSO) ve parçacık içi difüzyon (IPD) modelleri kullanılmıştır. Bunlar arasında PSO kinetik modeli, yüksek korelasyon katsayısı (R2) ve düşük sapma (%) değerleriyle adsorpsiyon sürecini daha doğru bir şekilde açıklamıştır. TNT giderim verimliliği 60 dakika sonra %99,7'ye ulaşmış ve APAC'nin TNT'yi sulu ortamdan gidermede oldukça etkili olduğunu göstermiştir.

Anahtar Kelimeler

• Patlayıcı
• kirlilik
• atık su
• adsorpsiyon
• Meisenheimer kompleksi

Removal Kinetics of 2,4,6-Trinitrotoluene from Aqueous Medium by Activated Carbon Obtained from Apple Peel

Öz

2,4,6-Trinitrotoluene (TNT) is one of the most commonly used high-powered explosives globally. It causes significant water and soil pollution during production and after use. In this study, the removal kinetics of TNT from aqueous media using activated carbon derived from apple peel (APAC) with a BET surface area of 1429 m2/g was examined. TNT concentrations were measured using a UV-VIS spectrophotometer by forming a Meisenheimer complex. Pseudo-first-order (PFO), pseudo-second-order (PSO), and intra-particle diffusion (IPD) models were employed to analyse the removal kinetics. Among these, the PSO kinetic model more accurately described the adsorption process, with a high correlation coefficient (R2) and low deviation (%) values. TNT removal efficiency reached 99.7% after 60 minutes, demonstrating that APAC is highly effective in removing TNT from aqueous media.

Anahtar Kelimeler

• Explosive
• pollution
• wastewater
• adsorption
• Meisenheimer complex

Kaynakça

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