Degradation of nitroaromatic compounds in subcritical water: application of response surface methodology
Yükleniyor...
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Desalination Publications
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, subcritical water has been used as a medium for degradation of 2,4-dinitrotoluene (2,4-DNT), 4-nitrotoluene (4-NT) and 2-amino-4-nitrotoluene (2-A-4-NT). The effect of temperature, oxidant concentration and time were studied and the optimal combination of reaction parameters was established using response surface methodology in a Box-Behnken design. Of all the parameters examined, temperature showed the most positive effect on the degradation of the nitroaromatic compounds. Optimal reaction conditions were found to be a temperature of 240 degrees C, 210 degrees C and 236 degrees C, time of 180, 178 and 172 min, oxidant concentration of 100, 99.64 and 99.61 mM for 2,4-DNT, 4-NT and 2-A-4-NT, respectively. Since high-temperature was applied, the possibility of formation of subcriticaldegradation products existed; therefore, total amounts of degraded nitroaromatic compounds and formed intermediate products were determined by gas chromatographic-mass spectrometric analysis.
Açıklama
Anahtar Kelimeler
Subcritical water, Degradation, Nitroaromatic Compounds, Response Surface Methodology, Box-Behnken
Kaynak
Desalination and and Water Treatment
WoS Q Değeri
N/A
Scopus Q Değeri
Q3
Cilt
77
