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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evaluation of anionic surfactant removal in anaerobic reactor with Fe(III) supplementation

Full text
Author(s):
Delforno, T. P. ; Okada, D. Y. ; Faria, C. V. ; Varesche, M. B. A.
Total Authors: 4
Document type: Journal article
Source: Journal of Environmental Management; v. 183, n. 3, p. 687-693, DEC 1 2016.
Web of Science Citations: 6
Abstract

The objective of this study was to evaluate the removal of linear alkylbenzene sulfonate (LAS) associated with Fe(III) supplementation using an expanded granular sludge bed (EGSB) reactor. The reactor was inoculated with a granular sludge and fed with synthetic wastewater containing a specific LAS load rate (SLLR) of 1.5 mg gVS(-1) d(-1) (similar to 16.4 mgLAS L-1 influent) and supplied with 7276 mu Mol L-1 of Fe(III). The biomasses from the inoculum and at the end of the EGSB-Fe operation (127 days) were characterized using 16S rRNA Ion Tag sequencing. An increase of 20% in the removal efficiency was observed compared to reactors without Fe(III) supplementation that was reported in the literature, and the LAS removal was approximately 84%. The Fe(III) reduction was dissimilatory (the total iron concentration in the influent and effluent were similar) and reached approximately 64%. The higher Fe(III) reduction and LAS removal were corroborated by the enrichment of genera, such as Shewanella (only EGSB-Fe - 0.5%) and Geobacter (1% - inoculum; 18% - EGSB-Fe). Furthermore, the enrichment of genera that degrade LAS and/or aromatic compounds (3.8% - inoculum; 29.6% - EGSB-Fe of relative abundance) was observed for a total of 20 different genera. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 14/16426-0 - Metagenomics of microbiota of anaerobic reactors applied in anionic surfactant degradation in commercial laundry wastewater
Grantee:Tiago Palladino Delforno
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 11/06783-1 - Degradation of anionic surfactant in EGSB reactor under methanogenic conditions and iron reduction with wastewater commercial laundry
Grantee:Tiago Palladino Delforno
Support Opportunities: Scholarships in Brazil - Doctorate