English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/137347
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Methodological approaches for fractionation and speciation to estimate trace element bioavailability in engineered anaerobic digestion ecosystems: an overview

AuthorsHullebusch, Eric D. van; Guibaud, Guilles; Simon, Stéphane; Lenz, Markus; Shakeri Yekta, Sepehr; Fermoso, Fernando G. ; Jain, Rohan; Duester, Lars; Roussel, Jimmy; Guillon, Emmanuel; Skyllberg, Ulf; Almeida, C. Marisa R.; Pechaud, Yoan; Garuti, Mirco; Frunzo, Luigi; Esposito, Giovanni
KeywordsAnaerobic digestion
Trace elements
Analytical methods
Fractionation
Speciation
Bioavailability
Issue Date16-Sep-2016
PublisherTaylor & Francis
CitationCritical Reviews in Environmental Science and Technology 46(16): 1324-1366 (2016)
AbstractOptimal supply of trace elements (TE) is a prerequisite for microbial growth and activity in anaerobic digestion (AD) bioprocesses. However, the required concentrations and ratios of essential TE for AD biotechnologies strongly depend on prevailing operating conditions as well as feedstock composition. Furthermore, TE in AD bioreactors undergo complex physico-chemical reactions and may be present as free ions, complex bound or as precipitates depending on pH, or on the presence of sulfur compounds or organic macromolecules. To overcome TE deficiency various commercial mineral products are typically applied to AD processes. The addition of heavy metals poses the risk of overdosing operating systems, which may be toxic to microbial consortia and ultimately the environment. Adequate supplementation, therefore, requires not only appropriate knowledge about the composition, but also on the speciation and bioavailability of TE. However, very little is yet fully understood on this specific issue. Evaluations of TE typically only include the measurement of total TE concentrations but do not consider the chemical forms in which TE exist. Thus detailed information on bioavailability and potential toxicity cannot be provided. This review provides an overview of the state-of-the-art in approaches to determine bioavailable TE in anaerobic bioprocesses, including sequential fractionation and speciation techniques. Critical aspects and considerations, including with respect to sampling and analytical procedures, as well as mathematical modelling, are examined. The approaches discussed in this review are based on our experiences and on previously published studies in the context of the ‘COST Action 1302: European Network on Ecological Roles of Trace Metals in Anaerobic Biotechnologies'.
Description91 Páginas, 4 Tablas, 6 Figuras
Publisher version (URL)http://dx.doi.org/10.1080/10643389.2016.1235943
URIhttp://hdl.handle.net/10261/137347
DOI10.1080/10643389.2016.1235943
ISSN1064-3389
E-ISSN1547-6537
Appears in Collections:(IG) Artículos
Files in This Item:
File Description SizeFormat 
Postprint_2016_CRevEnvSciTech.pdfArtículo principal902,53 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.