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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 sulfamethazine sorption and biodegradation by anaerobic granular sludge using batch experiments

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Author(s):
Oliveira, G. H. D. [1] ; Santos-Neto, A. J. [2] ; Zaiat, M. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Ctr Res Dev & Innovat Environm Engn, Lab Biol Proc, BR-13563120 Sao Carlos, SP - Brazil
[2] Univ Sao Paulo, Inst Chem Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Bioprocess and Biosystems Engineering; v. 39, n. 1, p. 115-124, JAN 2016.
Web of Science Citations: 14
Abstract

This study investigated the removal of the veterinary antimicrobial sulfamethazine (SMZ) using anaerobic granular sludge in batch tests. Adsorption and biodegradation were the main mechanisms involved, with adsorption being properly described by a pseudo-second-order model and a linear adsorption isotherm. The adsorption rate constant ranged from 0.00051 to 0.00587 L A mu g(-1) h(-1), whereas the SMZ partition coefficient was determined to be 0.0717 L g TVS-1. Biodegradation depended on the presence of readily available organic matter, indicating the occurrence of cometabolism. The addition of exogenous COD to a 144-h batch run at the concentration level of 100 A mu g L-1 increased the efficiency of SMZ removal from 57 to 84 %. A two-compartment model was developed and fitted to the experimental results, which established the aqueous phase as the main bioavailable compartment. The results suggested that SMZ conversion in anaerobic reactors benefits from high influent dilution and an exogenous supply of organic matter. (AU)

FAPESP's process: 09/53850-6 - Acquisition of a mass spectrometer forin-depth studies of the mechanisms of degradation of organic compounds in reactors applied to wastewater treatment and to the production of bioactive commercial compounds
Grantee:Marcelo Zaiat
Support type: Multi-user Equipment Program
FAPESP's process: 10/19910-9 - Development of green chemistry strategies on chromatography and application to the evaluation of antibiotics degradation in wastewaters by fixed-bed anaerobic bioreactors
Grantee:Alvaro José dos Santos Neto
Support type: Regular Research Grants
FAPESP's process: 12/18942-0 - Sulfamethazine removal in anaerobic reactors treating swine wastewater
Grantee:Guilherme Henrique Duarte de Oliveira
Support type: Scholarships in Brazil - Doctorate (Direct)