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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2018.09.012
|2 doi
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|a pubmed24n0969.xml
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|a (NLM)30454998
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|a (PII)S0956-053X(18)30553-1
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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 |
1 |
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|a Tang, Siqi
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Effect of inherent minerals on sewage sludge pyrolysis
|b Product characteristics, kinetics and thermodynamics
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|c 2018
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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
|b cr
|2 rdacarrier
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|a Date Completed 12.09.2019
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|a Date Revised 12.09.2019
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2018 Elsevier Ltd. All rights reserved.
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|a Inherent minerals in sludge influence sludge pyrolysis behaviors and the final products. In this study, the effects of inherent minerals on sewage sludge pyrolysis were systematically investigated by studying the pyrolysis behaviors of raw sewage sludge (RS) and HCl-washed sludge (WS), and in combination with thermodynamic equilibrium simulations for the hypothetical mineral-free sludge (AS) assumed. The pyrolysis of RS and WS was performed with a novel online thermogravimetric analyzer equipped with an infrared spectrometer and a gas chromatograph coupled with a mass spectrometer (TG-IR-GC/MS). It was found that inherent minerals influenced both the release of volatile products as a function of pyrolysis temperature, and the development of the physicochemical properties of the derived char. In the temperature range of 300-500 °C, hydrocarbons with more than 4 carbon atoms as well as aromatic compounds showed an increased release during WS pyrolysis, with respect to RS, while hydrocarbons with less than 3 carbon atoms such as CH4 and C3H6 exhibited a decreased release. In addition, the inherent minerals enhanced the release of HCN and NH3, both leading to increased NO2 release, and the release of H2S and COS was also promoted while the release of CH3SH, SO2 and CS2 was mitigated. Kinetic analysis confirmed that a catalytic effect induced by the inherent minerals decreased the activation energy at 300-500 °C. Thermodynamic simulations suggested that inherent minerals influenced sludge pyrolysis and the derived products formation by increasing the total Gibbs energy of the sludge pyrolysis system. Therefore, considerations of sludge inherent minerals should be taken into account during pyrolysis for the purpose of value-added commodity production and pollutant mitigation
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|a Journal Article
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|a Gibbs free energy minimization
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|a Inherent minerals
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|a Products distribution
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|a Pyrolysis kinetics
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|a Sewage sludge pyrolysis
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|a Minerals
|2 NLM
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|a Sewage
|2 NLM
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| 700 |
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|a Zheng, Chunmiao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Zuotai
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 80(2018) vom: 05. Okt., Seite 175-185
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
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|g volume:80
|g year:2018
|g day:05
|g month:10
|g pages:175-185
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|u http://dx.doi.org/10.1016/j.wasman.2018.09.012
|3 Volltext
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