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Sonolytic debromination of ambroxol process wastewater
Holger Brüggemann1, Heinz Köser, Erich Meyer
1Department of Environmental Protection Technology, Institute of Environmental Engineering, University of Hall-Wittenberg, D-06099 Halle/Saale, Germany.
Water Research
|April 12, 2003
Summary
Ultrasound effectively debrominates ambroxol in wastewater, making it biodegradable. Higher ultrasound intensity boosts debromination, but bromide ions hinder efficiency, with energy use varying significantly.
Area of Science:
- Environmental Chemistry
- Water Treatment Technologies
- Sonochemistry
Background:
- Ambroxol is a pharmaceutical compound present in wastewater.
- Wastewater from ambroxol synthesis contains organic bromine, posing environmental challenges.
- Conventional treatment methods may not effectively remove ambroxol or its brominated byproducts.
Purpose of the Study:
- To investigate the efficacy of ultrasound in treating wastewater containing ambroxol.
- To determine the factors influencing the sonolytic debromination of ambroxol.
- To assess the feasibility of sonolysis for industrial wastewater treatment.
Main Methods:
- Sonolysis of ambroxol model water and actual process water with varying organic bromine concentrations (20-1200 mg l(-1)).
- Analysis of debromination rates, organic carbon removal, and influence of parameters like ultrasound intensity, temperature, pH, bromide ions, and argon.
- Measurement of specific electric energy requirements for the sonolytic process.
Main Results:
- Ultrasound effectively debrominates ambroxol, rendering it biologically degradable.
- Debromination rate is dependent on ultrasound intensity and exhibits a 0.4 order with respect to organic bromine concentration.
- Bromide ions reduce debromination efficiency; process water shows higher rates than model water; no organic carbon removal observed.
Conclusions:
- Sonolysis is a viable method for debrominating ambroxol in wastewater.
- Optimizing ultrasound parameters and understanding the role of co-contaminants are crucial for efficient treatment.
- Further research is needed to address organic carbon removal and optimize energy efficiency for industrial application.