Bioregeneration Of Mono-Amine Modified Silica And Granular Activated Carbon Loaded With Mono-Azo Dyes In Batch Systems
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Date
2013-12
Authors
Abdu Al-Amrani, Waheeba Ahmed
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
The objectives of this study were to investigate and compare the durations and
efficiencies of bioregeneration of granular activated carbon (GAC) and mono-amine
modified silica (MAMS) loaded with mono-azo dyes, namely Acid Orange 7 (AO7),
Acid Yellow 9 (AY9) and Acid Red 14 (AR14) using sequential adsorption and
biodegradation approach in batch systems. The bioregeneration efficiencies of GAC and
MAMS loaded with each azo dye were quantified using the direct measurement of the
azo dye content on the adsorbent by reloading the bioregenerated adsorbent.
Additionally, some operational factors affecting the bioregeneration of azo dye-loaded
MAMS, namely the presence/absence of co-substrate, acclimated/non-acclimated
biomass, initial AO7 loading concentration, redox condition, type of acclimated biomass,
initial AO7-acclimated biomass concentration, shaking speed, biomass acclimation
concentration, and particle size were extensively investigated.
Description
Keywords
Mono-Amine , Mono-Azo Dyes