Summary of Study ST002004

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR001270. The data can be accessed directly via it's Project DOI: 10.21228/M8JM6B This work is supported by NIH grant, U2C- DK119886.

See: https://www.metabolomicsworkbench.org/about/howtocite.php

This study contains a large results data set and is not available in the mwTab file. It is only available for download via FTP as data file(s) here.

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Study ID	ST002004
Study Title	Metabolomics analysis of anaerobic digesters
Study Summary	In order to identify metabolites descriptive of alterations of the working themperature during the process of anaerobic digestion, we performed untargeted metabolomics on samples of sewage sludge collected from two reactors working in parallel but with different temperature settings.
Institute	INRAE
Last Name	Chapleur
First Name	Olivier
Address	1 rue Pierre-Gilles de Gennes, 92761 Antony Cedex, FRANCE
Email	olivier.chapleur@inrae.fr
Phone	+33 0140966506
Submit Date	2021-11-26
Num Groups	14
Raw Data Available	Yes
Raw Data File Type(s)	mzXML
Analysis Type Detail	LC-MS
Release Date	2021-12-08
Release Version	1

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Treatment:

Treatment ID:	TR002097
Treatment Summary:	During the time of the experiment, both reactors (3,000 m3 each) worked at half capacity due to a constraint in the availability of substrate to treat. On average, the full-scale digesters were operated at a mean hydraulic retention time (HRT) of 34 days and a mean organic loading rate of 0.82 kg of volatile solids m-3 day-1. For the first four months of study, the two reactors operated at 35 °C. Reactor A was kept at this temperature during all the experiment. For digester B, the temperature was decreased abruptly to 30 °C on the 123th day and maintained at this level for 2 HRTs until the 190th day. Then, the temperature was modified to 25 °C and maintained for 3 HRTs (between the 191st and the 373th days). Finally, the heating of reactor B was increased from day 374 onwards to reach the initial temperature of 35 °C.

Treatment ID:

TR002097

Treatment Summary:

During the time of the experiment, both reactors (3,000 m3 each) worked at half capacity due to a constraint in the availability of substrate to treat. On average, the full-scale digesters were operated at a mean hydraulic retention time (HRT) of 34 days and a mean organic loading rate of 0.82 kg of volatile solids m-3 day-1. For the first four months of study, the two reactors operated at 35 °C. Reactor A was kept at this temperature during all the experiment. For digester B, the temperature was decreased abruptly to 30 °C on the 123th day and maintained at this level for 2 HRTs until the 190th day. Then, the temperature was modified to 25 °C and maintained for 3 HRTs (between the 191st and the 373th days). Finally, the heating of reactor B was increased from day 374 onwards to reach the initial temperature of 35 °C.