Fenton Oxidation And Biological Treatment On
Pharmaceutical Wastewater
Author(s)
A. Vlyssides, E. M. Barampouti, S. Mai, A. Stamatoglou
& D. Skouroumounis
Abstract
Due to the wide variety of products produced in a drug manufacturing plant,
pharmaceutical industry wastewater is a wastewater that is not amenable to
conventional biological treatment. In this study, this wastewater was chemically
pretreated using Fenton’s reagent, since the initial values of the biokinetic
coefficients before Fenton indicated that this wastewater could not be
biologically treated. A factorial experimental procedure was designed in order to
examine the influence of Fenton’s pretreatment on biological oxidation.
Although the Fenton oxidation process was not very effective, the overall
efficiency mounted up to almost 80% in some cases. The optimum experimental
conditions for the oxidation of pharmaceutical wastewater were found to be the
following: FeSO4·7H2O concentration 2 g·L-1, H2O2 concentration 2 mL·L-1. It
was proved that after the Fenton process, the substrate was rendered significantly
more biodegradable since the maximum specific uptake rate Kmax was increased
from 1,76 to 3,14 gCOD·gVSS-1·d-1, whereas the inhibitory coefficient Ks was
decreased from 3752 to 732 mg·L-1. Conclusively, Fenton oxidation could be a
feasible method for the pretreatment of pharmaceutical wastewater.
Keywords: biological oxidation, factorial experiment, fenton, pharmaceutical
wastewater.
1 Introduction
Pharmaceutical industry produces a wide variety of products. This industry uses
both inorganics and organics as raw materials the latter being either of synthetic
or of vegetable and animal origin [1,2]. Antibiotics and vitamins are produced by
fermentation of fairly complex nutrient solutions of organic matter and inorganic
Keywords
biological oxidation, factorial experiment, fenton, pharmaceutical
wastewater.
Related Book
Other papers in this volume
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