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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2020.05.047
|2 doi
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|a pubmed24n1037.xml
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|a (DE-627)NLM311197914
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|a (NLM)32540723
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|a (PII)S0956-053X(20)30296-8
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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 Melgaço, Lucas A O
|e verfasserin
|4 aut
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|a Ammonia recovery from food waste digestate using solar heat-assisted stripping-absorption
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|c 2020
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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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|a Date Completed 14.07.2020
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|a Date Revised 14.07.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2020 Elsevier Ltd. All rights reserved.
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|a The highest costs of stripping-absorption processes for ammonia recovery are related to energy (for heating and air supply) and chemical addition (for pH adjustment). In this paper, a simplified system that used no chemicals, and a renewable source of energy for heating, was tested to recover nitrogen as ammonium sulfate from food waste digestate. pH adjustment was achieved by CO2 stripping, and vacuum tube solar collectors were used to provide heating. The effect of different temperatures (25 °C and 45 °C) and gas to liquid ratios (1700 and 2600) on ammonia removal and recovery were assessed. Ammonia removal efficiencies higher than 91% were achieved for all evaluated experimental conditions. The solar heater showed adequate capacity to increase the temperature of the liquid digestate by 21 °C and maintain the temperature at 45 °C throughout the experiment. Tests carried out at 45 °C achieved the highest ammonia removal efficiency (98%) at the lowest evaluated G/L ratio (1700). Better absorption efficiencies could potentially have been achieved if lower inlet airflow rates and packing material had been used in the absorption column
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|a Journal Article
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|a Anaerobic digestate
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|a Food waste
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|a Nitrogen recovery
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|a Stripping-absorption
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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 Meers, Erik
|e verfasserin
|4 aut
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|a Mota, César R
|e verfasserin
|4 aut
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 113(2020) vom: 15. Juli, Seite 244-250
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
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|g volume:113
|g year:2020
|g day:15
|g month:07
|g pages:244-250
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|u http://dx.doi.org/10.1016/j.wasman.2020.05.047
|3 Volltext
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