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<p>Biological invasions occur when species are moved by human activities from their native range to new areas where they have no evolutionary history and are a major global economic and ecological concern. This paper includes biological treatment of a new activated sludge system that can remove abundant organic matter (OM) in wastewater. The study presents also modelling of organic matter biodegradation process. Factors affecting the biodegradation rate were carried out Viz. the concentration of the organic matter, the mass of activated sludge, the dye content, and the optical density. The results showed that the biodegradation kinetics with time displays an exponential decay. However, the kinetics reaction is well fit by a pseudo second-order equation. After 1 h of treatment, the yields of 93.63 and 92.86% for concentration of 60 and 30 ppm were respectively recorded. UV–Visible spectra and fluorescence spectroscopy were also investigated. Fluorescence spectroscopy was used to characterize municipal waste water at various stages of treatment. A Principal Component Analysis (PCA) has displayed, in agreement with experiments, that the correlation between variables are significant.</p>

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Fluorescence Spectroscopy Investigation to Assess the Development of Recalcitrant Organic Compounds in Wastewater during the Biodegradation Process

  • 期刊论文

  • 发表日期：

    2025年1月3日

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  • Bahia Baaziz,
  • Nabila Aliouane,
  • Nabila Abbed

摘要

Biological invasions occur when species are moved by human activities from their native range to new areas where they have no evolutionary history and are a major global economic and ecological concern. This paper includes biological treatment of a new activated sludge system that can remove abundant organic matter (OM) in wastewater. The study presents also modelling of organic matter biodegradation process. Factors affecting the biodegradation rate were carried out Viz. the concentration of the organic matter, the mass of activated sludge, the dye content, and the optical density. The results showed that the biodegradation kinetics with time displays an exponential decay. However, the kinetics reaction is well fit by a pseudo second-order equation. After 1 h of treatment, the yields of 93.63 and 92.86% for concentration of 60 and 30 ppm were respectively recorded. UV–Visible spectra and fluorescence spectroscopy were also investigated. Fluorescence spectroscopy was used to characterize municipal waste water at various stages of treatment. A Principal Component Analysis (PCA) has displayed, in agreement with experiments, that the correlation between variables are significant.