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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2023.06.020
|2 doi
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|a pubmed25n1194.xml
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|a (DE-627)NLM358449014
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|a (NLM)37343443
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|a (PII)S0956-053X(23)00449-X
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|a DE-627
|b ger
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Hu, Lifang
|e verfasserin
|4 aut
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| 245 |
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|a Arsenate microbial reducing behavior regulated by the temperature fields in landfills
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|c 2023
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| 336 |
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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 22.08.2023
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|a Date Revised 22.08.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2023 Elsevier Ltd. All rights reserved.
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|a Attention should be paid to the As(V) reducing behavior in landfills under different temperature fields. In this study, microcosm tests were conducted using enrichment culture from a landfill. The results revealed that the reduction rate of As(V) was significantly affected by the temperature field, with the highest reduction rate observed at 50 °C, followed by 35 °C, 25 °C, and 10 °C. Different As cycling pathways were observed under various temperature fields. At room and medium temperatures, As4S4 was detected, indicating that both biomineralization and methylation processes occurred after As(V) reduction. However, only biogenic methylation was observed under high or low temperatures, indicating that the viability and adaptability of microorganisms varied depending on the temperature field and As contents. Pseudomonas was found to be the primary genus and dominant As(V) reduction bacteria (ARB) in all reactors. The study revealed that Pseudomonas accounted for a significant proportion of arsC genes, ranging from 87.29% to 97.59%, while arsCs genes were predominantly found in Bacillales and Closestridiales, with a contribution ranging from 89.17% to 96.59%. Interestingly, Bacillus and Clostridium were found to possess arsA genes in their metagenome-ssembled genome, resulting in a higher As(V) reducing rate under medium and high temperatures. These findings underscore the importance of temperature in modulating As(V) reducing behavior and As cycling, and could have implications for managing As pollution in landfill sites
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|a Journal Article
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|a Arsenic
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|a As(V) reduction bacteria
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|a Landfill
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|a arsC gene
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|a arsenic acid
|2 NLM
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|a N7CIZ75ZPN
|2 NLM
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|a Arsenates
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|a N712M78A8G
|2 NLM
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| 700 |
1 |
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|a Cheng, Na
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Yuqian
|e verfasserin
|4 aut
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|a Zhang, Dongchen
|e verfasserin
|4 aut
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|a Xu, Ke
|e verfasserin
|4 aut
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|a Lv, Xiaofei
|e verfasserin
|4 aut
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|a Long, Yuyang
|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 168(2023) vom: 01. Aug., Seite 366-375
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnas
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| 773 |
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|g volume:168
|g year:2023
|g day:01
|g month:08
|g pages:366-375
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|u http://dx.doi.org/10.1016/j.wasman.2023.06.020
|3 Volltext
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