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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.)

Influence of co-substrates in the anaerobic degradation of an anionic surfactant

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Author(s):
Okada, D. Y. [1] ; Esteves, A. S. [1] ; Delforno, T. P. [1] ; Hirasawa, J. S. [1] ; Duarte, I. C. S. [2] ; Varesche, M. B. A. [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Hydraul & Sanitat, BR-13566590 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, BR-18052780 Sorocaba, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Brazilian Journal of Chemical Engineering; v. 30, n. 3, p. 499-506, JUL-SEP 2013.
Web of Science Citations: 4
Abstract

The removal of linear alkylbenzene sulfonate (LAS) was evaluated in a UASB reactor using short-chain alcohols (ethanol and methanol) and complex co-substrate (yeast extract). Using only methanol and ethanol as co-substrates resulted in removal of LAS between 30 and 41%. At the end, addition of a complex substrate (yeast extract) increased the removal of LAS to 50%. During the assay, water supply aeration increased the volatile fatty acid of the effluent (70 mg HAc.L-1) and decreased the removal of LAS (from 40 to 30%). According to the fluorescence in situ hybridization (FISH) results, the amount of Archaea decreased due to water supply aeration (from 64 to 48%). Furthermore, addition of complex co-substrate increased the total anaerobic bacteria and methanogenic archaea content (three and four log units, respectively), which were estimated using the most probable number technique. (AU)