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231224s2016 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2016.108
|2 doi
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|a pubmed24n0868.xml
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|a (NLM)27191568
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Rava, E
|e verfasserin
|4 aut
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|a Effect of carrier fill ratio on biofilm properties and performance of a hybrid fixed-film bioreactor treating coal gasification wastewater for the removal of COD, phenols and ammonia-nitrogen
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 02.08.2016
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|a Date Revised 07.12.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a The purpose of this study was to determine the effect different biofilm carrier filling ratios would have on biofilm morphology and activity and bacterial diversity in a hybrid fixed-film bioreactor treating high strength coal gasification wastewater (CGWW) for the removal of chemical oxygen demand (COD), phenols and ammonia-nitrogen. Results showed that a carrier fill of 70% formed a 'compact' biofilm, a 50% fill formed a 'rippling' biofilm and a 30% fill formed a 'porous' biofilm. The highest microbial activity was obtained with a 50% carrier fill supporting a relatively thin biofilm. The highest level of biofilm bound metals were aluminium, silicon, calcium and iron in the 'compact' biofilm; nitrogen, magnesium, chloride, sodium and potassium in the 'rippling' biofilm, and copper in the 'porous' biofilm. The bioreactor improved the quality of the CGWW by removing 49% and 78% of the COD and phenols, respectively. However, no significant amount of ammonia-nitrogen was removed since nitrification did not take place due to heterotrophic bacteria out-competing autotrophic nitrifying bacteria in the biofilm. The dominant heterotrophic genera identified for all three carrier filling ratios were Thauera, Pseudaminobacter, Pseudomonas and Diaphorobacter
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Coal
|2 NLM
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|a Industrial Waste
|2 NLM
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|a Phenols
|2 NLM
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|a Waste Water
|2 NLM
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|a Ammonia
|2 NLM
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|a 7664-41-7
|2 NLM
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a Chirwa, E
|e verfasserin
|4 aut
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 73(2016), 10 vom: 01., Seite 2461-7
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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| 773 |
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|g volume:73
|g year:2016
|g number:10
|g day:01
|g pages:2461-7
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|u http://dx.doi.org/10.2166/wst.2016.108
|3 Volltext
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