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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2015.07.023
|2 doi
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|a pubmed24n0837.xml
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|a (DE-627)NLM25128672X
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|a (NLM)26216504
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|a (PII)S0956-053X(15)30040-4
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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 Hu, Weitong
|e verfasserin
|4 aut
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|a Bioleached sludge composting drastically reducing ammonia volatilization as well as decreasing bulking agent dosage and improving compost quality
|b A case study
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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 30.06.2016
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|a Date Revised 16.11.2017
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2015 Elsevier Ltd. All rights reserved.
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|a Sludge bioleaching technology with Acidithiobacillus species has been commercially adopted for improving advanced dewatering of sludge in China since 2010. However, up to now, little information on bioleached dewatered sludge (BS) composting is available. Here, we report the changes of physicochemical and biological properties in BS composting and evaluate compost product quality compared to conventional dewatered sludge (CS) composting in an engineering scale composting facility. The results showed that the amount of bulking agents required in BS composting was only about 10% of CS composting to obtain optimum moisture content, reducing about 700 kg bulking agents per ton fresh sludge. pH of BS composting mixture was slightly lower consistently by about 0.2-0.3 pH units than that in CS mixture in the first 30 days. Organic matter biodegradation in BS system mainly occurred in the first 9 days of composting. In spite of higher content of NH4(+)-N was found in BS mixture in related to CS mixture; unexpectedly the cumulative ammonia volatilization in the former was only 51% of the latter, indicating that BS composting drastically reduced nitrogen loss. Compared to CS composting system, the relative lower pH, the higher intensity of microbial assimilation, and the presence of water soluble Fe in BS system might jointly reduce ammonia volatilization. Consequently, BS compost product exhibited higher fertilizer values (N+P2O5+K2O=8.38%) as well as lower heavy metal levels due to the solubilization of sludge-borne heavy metals during bioleaching process. Therefore, composting of BS possesses more advantages over the CS composting process
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Ammonia volatilization
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|a Biodegradation
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|a Bioleached sludge
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|a Composting
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|a Quality
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|a Sewage
|2 NLM
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|a Soil
|2 NLM
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|a Ammonia
|2 NLM
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| 650 |
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|a 7664-41-7
|2 NLM
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| 700 |
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|a Zheng, Guanyu
|e verfasserin
|4 aut
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|a Fang, Di
|e verfasserin
|4 aut
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| 700 |
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|a Cui, Chunhong
|e verfasserin
|4 aut
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|a Liang, Jianru
|e verfasserin
|4 aut
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| 700 |
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|a Zhou, Lixiang
|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 44(2015) vom: 19. Okt., Seite 55-62
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
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|g volume:44
|g year:2015
|g day:19
|g month:10
|g pages:55-62
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|u http://dx.doi.org/10.1016/j.wasman.2015.07.023
|3 Volltext
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