Next Article in Journal
Copper Complexing Capacity and Trace Metal Content in Common and Balsamic Vinegars: Impact of Organic Matter
Previous Article in Journal
Cytotoxic Activity of Organotin(IV) Derivatives with Triazolopyrimidine Containing Exocyclic Oxygen Atoms
Previous Article in Special Issue
High-Rate Anaerobic Digestion of Waste Activated Sludge by Integration of Electro-Fenton Process
Open AccessFeature PaperArticle

Methods for the Evaluation of Industrial Mechanical Pretreatments before Anaerobic Digesters

DEEP Laboratory, Univ. Lyon, INSA Lyon, EA7429, F-69621 Villeurbanne, CEDEX, France
*
Author to whom correspondence should be addressed.
Academic Editors: Mara G. Freire and Jalel Labidi
Molecules 2020, 25(4), 860; https://doi.org/10.3390/molecules25040860 (registering DOI)
Received: 15 January 2020 / Revised: 5 February 2020 / Accepted: 11 February 2020 / Published: 15 February 2020
(This article belongs to the Special Issue Efficient Technology for the Pretreatment of Biomass II)
Different methods were tested to evaluate the performance of a pretreatment before anaerobic digestion. Besides conventional biochemical parameters, such as the biochemical methane potential (BMP), the methane production rate, or the extent of solubilization of organic compounds, methods for physical characterization were also developed in the present work. Criteria, such as the particle size distribution, the water retention capacity, and the rheological properties, were thus measured. These methods were tested on samples taken in two full-scale digesters operating with cattle manure as a substrate and using hammer mills. The comparison of samples taken before and after the pretreatment unit showed no significant improvement in the methane potential. However, the methane production rate increased by 15% and 26% for the two hammer mills, respectively. A relevant improvement of the rheological properties was also observed. This feature is likely correlated with the average reduction in particle size during the pretreatment operation, but these results needs confirmation in a wider range of systems. View Full-Text
Keywords: anaerobic digestion; mechanical pretreatments; agricultural wastes; rheology; physical properties anaerobic digestion; mechanical pretreatments; agricultural wastes; rheology; physical properties
Show Figures

Figure 1

MDPI and ACS Style

Coarita Fernandez, H.; Amaya Ramirez, D.; Teixeira Franco, R.; Buffière, P.; Bayard, R. Methods for the Evaluation of Industrial Mechanical Pretreatments before Anaerobic Digesters. Molecules 2020, 25, 860.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop