Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum
Document title: Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum
Journal: Brazilian archives of biology and technology
Database: PERIÓDICA
System number: 000387669
ISSN: 1516-8913
Authors: 1
2
2
1
2
Institutions: 1Universidade Federal de Sao Carlos, Departamento de Biologia, Sorocaba, Sao Paulo. Brasil
2Universidade de Sao Paulo, Escola de Engenharia de Sao Carlos, Sao Carlos, Sao Paulo. Brasil
Year:
Season: May-Jun
Volumen: 58
Number: 3
Pages: 326-332
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract The objective of this study was to evaluate the degradation of Linear Alkylbenzene Sulfonate (LAS) in anaerobic sequencing batch reactor (ASBR) under denitrifying conditions using swine sludge as inoculum. The reactor was operated for 104 days with synthetic substrate containing nitrate, and LAS was added later (22 mg/L). Considering the added mass of the LAS, the adsorbed mass in the sludge and discarded along with the effluent, degradation of the surfactant at the end of operation was 87%, removal of chemical oxygen demand was 86% and nitrate was 98%. The bacterial community was evaluated by cutting the bands and sequencing of polymerase chain reaction (PCR) fragments and denaturing gradient gel electrophoresis (DGGE). The sequences obtained were related to the phylum Proteobacteria and the alpha-and beta-proteobacteria classes, these bacteria were probably involved in the degradation of LAS. The efficiently degraded LAS in the reactor was operated in batch sequences in denitrifying conditions
Disciplines: Biología,
Ingeniería
Keyword: Ingeniería ambiental,
Ingeniería química,
Biotecnología,
Biodegradación,
Sulfonato lineal de alquilbenceno,
Biorreactores,
Reactores anaerobios,
Denitrificación,
Comunidad bacteriana
Keyword: Biology,
Engineering,
Chemical engineering,
Environmental engineering,
Biotechnology,
Biodegradation,
Linear alkylbenzene sulfonate,
Bioreactors,
Anaerobic reactors,
Denitrification,
Bacterial community
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