Comparison and modification of inhibition kinetic models on phenol biodegradation data
Başlık çevirisi mevcut değil.
- Tez No: 364433
- Danışmanlar: YRD. DOÇ. DR. NİLSUN İNCE
- Tez Türü: Yüksek Lisans
- Konular: Çevre Mühendisliği, Environmental Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1991
- Dil: İngilizce
- Üniversite: Boğaziçi Üniversitesi
- Enstitü: Çevre Bilimleri Enstitüsü
- Ana Bilim Dalı: Çevre Mühendisliği Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 79
Özet
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Özet (Çeviri)
Organic priority pollutants present an important problem to biological waste treatment facilities, because they often inhibit the growth of organisms which are responsible for their degradation. Phenol is considered as one of these organic priority pollutants by the U.s Environmental Protection Agency (EPA). The purpose of the thesis, was to determine, experimentally, the inhibition character of phenol and to review and modify the existing inhibition models by using a microbial culture, dominated by Pseudomonas Putida. In the experimental part of the study, data were obtained to relate the specific growth rate to substrate concentration, after acclimation of bacteria to phenol, for two different ranges of microorganism concentrations. In the second part of the study, five inhibition mo:iels taken from literature sources were applied to the data obtained in the first part of the study. Results showed that the acclimation period was very effective on the biodegradation kinetics. Finally, three new equations were derived and tested by non-linear regression techniques for correlation of specific growth rate with inhibitor concentration. Comparison of the fit of the data to total of eight inhibition equations has shown that it is difficult to choose one single equation which represents best the inhibition kinetics of phenol. Rather, depending on the experimental conditions and the nature of the microbial population, one or a group of these equations can be selected to serve as models of the specific inhibition problem, one is dealing with.
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