Effect of hydrodynamic mixing conditions on wet oxidation reactions in a stirred vessel reactor

Saeid Baroutian; Abdul Moiz Syed; M T Munir; Daniel J Gapes; Brent R Young

doi:10.1016/j.biortech.2018.05.029

Effect of hydrodynamic mixing conditions on wet oxidation reactions in a stirred vessel reactor

Bioresour Technol. 2018 Aug:262:333-337. doi: 10.1016/j.biortech.2018.05.029. Epub 2018 May 8.

Authors

Saeid Baroutian¹, Abdul Moiz Syed², M T Munir², Daniel J Gapes³, Brent R Young²

Affiliations

¹ Department of Chemical & Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand. Electronic address: s.baroutian@auckland.ac.nz.
² Department of Chemical & Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand.
³ Scion, Te Papa Tipu Innovation Park, Rotorua, New Zealand.

PMID: 29754765
DOI: 10.1016/j.biortech.2018.05.029

Abstract

The aim of this study was to investigate the impact of mixing intensity and mixing flow patterns on solid waste degradation, and production of valuable intermediate by-products such as acetic acid. Total suspended solids generally decreased, soluble chemical oxygen demand, dissolved organic carbon, and acetic acid concentration generally increased with the progress of the reaction and increase in the mixing intensity. The results showed that axial-radial flow pattern (using pitch blade impeller) and medium impeller speed (500 rpm) resulted in a higher degree of solid degradation and production of acetic acid.

Keywords: Hydrodynamics; Hydrothermal processing; Mixing; Organic waste; Wet oxidation.

MeSH terms

Acetic Acid / chemistry*
Biological Oxygen Demand Analysis
Bioreactors*
Carbon / chemistry*
Hydrodynamics
Oxidation-Reduction
Waste Disposal, Fluid

Substances

Carbon
Acetic Acid