Effects of co-substrate and biomass acclimation concentration on the bioregeneration of azo dye-loaded mono-amine modified silica
[Display omitted] •Bioregeneration of AO7-loaded MAMS in the absence of co-substrate.•Bioregeneration of AY9- and AR14-loaded MAMS in the presence of co-substrate.•Shortening of bioregeneration duration using higher acclimation concentration.•No effect on bioregeneration efficiency under different a...
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Published in | Bioresource technology Vol. 143; pp. 584 - 591 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Kidlington
Elsevier Ltd
01.09.2013
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | [Display omitted]
•Bioregeneration of AO7-loaded MAMS in the absence of co-substrate.•Bioregeneration of AY9- and AR14-loaded MAMS in the presence of co-substrate.•Shortening of bioregeneration duration using higher acclimation concentration.•No effect on bioregeneration efficiency under different acclimation concentrations.
Bioregeneration of mono-amine modified silica gel (MAMS) adsorbent loaded with Acid Orange 7 (AO7), Acid Yellow 9 (AY9) and Acid Red 14 (AR14), respectively, was investigated under two different operational conditions, namely absence/presence of sucrose/bacto-peptone as the co-substrate and different biomass acclimation concentrations. The results revealed that the AY9- and AR14-loaded MAMS adsorbents could almost be completely bioregenerated but only in the presence of co-substrate whereas the bioregeneration of AO7-loaded MAMS could achieve up to 71% in the absence of the co-substrate. These differences could be related to the structural properties of the investigated azo dyes. In addition, the results showed that the bioregeneration duration of AO7-loaded MAMS could be progressively shortened by using biomass acclimated to increasingly higher AO7 concentration. However, the bioregeneration efficiencies were found to be relatively unchanged under different biomass acclimation concentrations. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0960-8524 1873-2976 |
DOI: | 10.1016/j.biortech.2013.06.055 |