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231224s2016 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2016.239
|2 doi
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|a pubmed25n0875.xml
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|a (DE-627)NLM262619571
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|a (NLM)27438257
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Zhu, Lei
|e verfasserin
|4 aut
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|a Ammonia nitrogen removal from acetylene purification wastewater from a PVC plant by struvite precipitation
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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 17.01.2017
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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 Acetylene purification wastewater (APW) usually contains high concentrations of ammonia nitrogen (NH4-N), which is generated during the production of acetylene in a polyvinylchloride manufacturing plant. In this study, a struvite precipitation method was selected to remove NH4-N from the APW. Laboratory-scale batch experiments were performed to investigate the effects of the initial APW pH, phosphate (PO4(3-)) concentration, magnesium (Mg(2+)) concentration, and sources of PO4(3-) and Mg(2+) on NH4-N removal. The results indicated that the initial APW pH had a significant effect on the removal of NH4-N, while the other factors had relatively minor effect. The NH4-N could be effectively removed at an optimum initial APW pH of 9.5, when Na2HPO4·12H2O and MgSO4·7H2O were both applied to NH4-N at a ratio of 1.2. Under these conditions, the efficiency of removal of NH4-N, total nitrogen and chemical oxygen demand were 85%, 84% and 18%, respectively. The X-ray diffraction analysis indicated that the precipitates were dominated by struvite. The scanning electron microscopy analysis of the precipitates showed a typical morphology of stick-like and prismatic crystals with coarse surface. The energy dispersive spectroscopy analysis indicated that the precipitates contained P, O, Mg and Ca
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|a Journal Article
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|a Industrial Waste
|2 NLM
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|a Phosphates
|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 Polyvinyl Chloride
|2 NLM
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|a 9002-86-2
|2 NLM
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|a Struvite
|2 NLM
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|a AW3EJL1462
|2 NLM
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|a Magnesium
|2 NLM
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|a I38ZP9992A
|2 NLM
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| 650 |
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|a Acetylene
|2 NLM
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| 650 |
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|a OC7TV75O83
|2 NLM
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| 700 |
1 |
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|a Dong, DeMing
|e verfasserin
|4 aut
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1 |
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|a Hua, XiuYi
|e verfasserin
|4 aut
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1 |
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|a Guo, ZhiYong
|e verfasserin
|4 aut
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1 |
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|a Liang, DaPeng
|e verfasserin
|4 aut
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| 773 |
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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 74(2016), 2 vom: 01., Seite 508-15
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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| 773 |
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|g volume:74
|g year:2016
|g number:2
|g day:01
|g pages:508-15
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|u http://dx.doi.org/10.2166/wst.2016.239
|3 Volltext
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|d 74
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