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Quantitative monitoring of an activated sludge reactor using on-line UV-visible...

The performance of an activated sludge reactor can be significantly enhanced through use of continuous and real-time process-state monitoring, which avoids the need to sample for off-line analysis and to use chemicals. Despite the complexity associated with wastewater treatment systems, spectroscopic methods coupled with chemometric tools have been shown to be powerful tools for bioprocess monitoring and contro...

Correlation between sludge settling ability and image analysis information usin...

In the last years there has been an increase on the research of the activated sludge processes, and mainly on the solid–liquid separation stage, considered of critical importance, due to the different problems that may arise affecting the compaction and the settling of the sludge. Furthermore, image analysis procedures are, nowadays considered to be an adequate method to characterize both aggregated and filamen...

Surveying an activated sludge reactor using online UV-visible and NIR spectrosc...

The performance of activated sludge reactors can be enhanced by the ability to monitor the status of the process without the need for chemicals addition or complex calibration procedures. Nowadays automation is still limited by poor sensor performance and high maintenance costs. Spectroscopic methods associated with chemometrics are being presented as a powerful tool for process monitoring and control. Once imp...

Activated sludge process monitoring through in situ near-infrared spectral anal...

The application of near infrared (NIR) spectroscopy for industrial process monitoring is achieving increasing importance over the last twenty years. In fact, the real time monitoring capacity of NIR spectroscopy is a very important feature for process monitoring, prediction and control as it allows a fast evaluation of the state of the process. However, the application of NIR spectroscopy in wastewater treatmen...

Monitoring an activated sludge reactor using IR spectroscopy

Correlation between sludge settleability and image analysis information using P...

High pressure solubility data of carbon dioxide in (tri-iso-butyl(methyl)phosph...

Ionic liquids are attracting great attention nowadays due to their interesting properties which make them useful in a broad range of applications including reaction media or separation/capture of environmentally hazardous gases such as carbon dioxide. In many cases, for practical and/or economical reasons, the use of aqueous solutions of ILs would be preferable to their use as pure compounds. In this work, high...

Multivariate monitoring of an activated sludge process for biological treatment...

Activated sludge process monitoring through in-situ NIR spectral analysis

The application of near infrared (NIR) spectroscopy for industrial process monitoring is achieving increasing importance over the last twenty years. In fact, the real time monitoring capacity of NIR spectroscopy is a very important feature for process monitoring, prediction and control as it allows a fast evaluation of the state of the process. However, the application of NIR spectroscopy in wastewater treatmen...

Application of computational intelligence techniques for monitoring and predict...

Computational intelligence models are being increasingly employed for the supervision and control of biological wastewater treatment systems. These models can be described as mathematical methodologies which explain relations between cause (input data) and effects (output data) irrespective to the process and without the need for making assumptions considering the nature of the relations. In this work both Arti...