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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1002/wer.1043
|2 doi
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|a pubmed24n0978.xml
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|a (DE-627)NLM293667055
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|a (NLM)30740828
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Chen, Peng
|e verfasserin
|4 aut
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|a Recovering sodium erythorbate from wastewater through freeze crystallization technology
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|c 2019
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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 25.06.2019
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|a Date Revised 07.12.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2018 Water Environment Federation.
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|a Eutectic freeze crystallization was developed to recover sodium erythorbate (NaE) from wastewater at pHs 4.1, 5.3, and 6.5. Two substances (A and B) were sequentially recovered from the samples. The recovery rate of substance A was 2.06, 1.83, and 3.03 g/L at pHs 4.1, 5.3, and 6.5, respectively; while that of B was 5.51, 3.09, and 3.26 g/L at the corresponding pHs. The analysis results of the two recovered substances indicated that substance A was mostly Na2 SO4 ·10H2 O, while substance B was mainly NaE. Salt recovery was most successful at pH 4.1 with the purity of recovered NaE reaching 87.53 wt%. Moreover, the chemical oxygen demand and electric conductivity of the ice were far smaller than the initial wastewater. The concentration effect was minimal due to the formation of Na2 SO4 ·10H2 O and NaE crystals. This combined crystallization strategy can potentially become an economic technology to recover NaE from wastewater. Practitioner points Segregation of NaE and Na2 SO4 ·10H2 O during the freeze crystallization process. Recovering 5.53 kg NaE with the purity of 87.53 wt% from 1 m3 wastewater. Decreasing chemical oxygen demand and electric conductivity of wastewater through freeze crystallization technology
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|a Journal Article
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|a eutectic freeze crystallization
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|a freeze concentration
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|a sodium erythorbate
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|a sodium sulfate
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|a wastewater treatment
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|a Ice
|2 NLM
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|a Waste Water
|2 NLM
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|a Water Pollutants, Chemical
|2 NLM
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|a isoascorbic acid
|2 NLM
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|a 311332OII1
|2 NLM
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|a Ascorbic Acid
|2 NLM
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| 650 |
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|a PQ6CK8PD0R
|2 NLM
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| 700 |
1 |
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|a Song, Pengfei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Lidong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Ying
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Yongdi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Lehua
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 91(2019), 5 vom: 05. Mai, Seite 455-461
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnns
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| 773 |
1 |
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|g volume:91
|g year:2019
|g number:5
|g day:05
|g month:05
|g pages:455-461
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|u http://dx.doi.org/10.1002/wer.1043
|3 Volltext
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|d 91
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|e 5
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|h 455-461
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