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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1080/09593330.2014.966767
|2 doi
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|a pubmed25n0807.xml
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|a (DE-627)NLM242157726
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|a (NLM)25249000
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Zhang, Dayi
|e verfasserin
|4 aut
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|a Innovative slow-release organic carbon-source material for groundwater in situ denitrification
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 05.10.2015
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|a Date Revised 10.12.2019
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Slow-release organic carbon-source (SOC) material, a new kind of electron donor for in situ groundwater denitrification, was prepared and evaluated in this study. With starch as a biologically utilized carbon source and polyvinyl alcohol (PVA) as a frame, this material performed controllable carbon release rates and demonstrated stable behaviour during the simulated denitrification process. Raman spectrum analysis showed that the PVA skeleton formed cross-linking network structures for hydrogen-bonded water molecules reset in low temperatures, and the starchy molecules filled in the interspace of the skeleton to form a two-phase interlocking/disperse phase structure. In a static system, carbon release processes followed the Fickian law with (1.294-6.560)×10(-3) mg g(-1) s(-1/2) as the release coefficient. Under domestication and in situ groundwater simulation conditions, SOC material played a favourable role during denitrification, with 1.049±0.165 as an average carbon-nitrogen ratio. The denitrification process followed the law of zero-order kinetics, while the dynamics parameter kN was 0.563-8.753 gN m(-3) d(-1). Generally, SOC material was suggested to be a potential carbon source (electron donor) suitable for in situ groundwater denitrification
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|a Evaluation Study
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|a Journal Article
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|a denitrification
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|a groundwater
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|a polyvinyl alcohol (PVA)
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|a slow-release organic carbon-source
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|a starch
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|a Organic Chemicals
|2 NLM
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1 |
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|a Zhang, Xu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Yun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Guizhong
|e verfasserin
|4 aut
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| 700 |
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|a Li, Guanghe
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Environmental technology
|d 1998
|g 36(2015), 5-8 vom: 31. März, Seite 909-19
|w (DE-627)NLM098202545
|x 0959-3330
|7 nnns
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| 773 |
1 |
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|g volume:36
|g year:2015
|g number:5-8
|g day:31
|g month:03
|g pages:909-19
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|u http://dx.doi.org/10.1080/09593330.2014.966767
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