title: Performance of an Anaerobic Baffled Reactor (ABR) in treatment of cassava wastewater.
abstract: The performance of an anaerobic baffled reactor (ABR) was evaluated in the treatment of cassava wastewater, a pollutant residue. An ABR divided in four equal volume compartments (total volume 4L) and operated at 35ºC was used in cassava wastewater treatment. Feed tank chemical oxygen demand (COD) was varied from 2000 to 7000 mg L(-1) and it was evaluated the most appropriated hydraulic retention time (HRT) for the best performance on COD removal. The ABR was evaluated by analysis of COD (colorimetric method), pH, turbidity, total and volatile solids, alkalinity and acidity. Principal component analysis (PCA) was carried to better understand data obtained. The system showed buffering ability as acidity decreased along compartments while alkalinity and pH values were increased. There was particulate material retention and COD removal varied from 83 to 92% for HRT of 3.5 days.
authors.affiliation: Departamento de Engenharia e Tecnologia de Alimentos, Instituto de Biociências Letras e Ciências Exatas de São José do Rio Preto, Universidade Estadual Paulista São Paulo, São José do Rio Preto, SP , Brasil ;
authors.forename: Fernanda M
authors.initials: FM
authors.lastname: Ferraz
authors.forename: Aline T
authors.initials: AT
authors.lastname: Bruni
authors.forename: Vanildo L
authors.initials: VL
authors.lastname: Del Bianchi
keywords: Anaerobic baffled reactor (ABR); Anaerobic digestion; COD removal; Cassava wastewater; Principal component analysis (PCA)
references.citation: Water Res. 2002 Feb;36(4):933-43
references.pmid: 11848364
references.citation: Environ Int. 2005 Apr;31(3):343-9
references.pmid: 15734187
references.citation: J Biotechnol. 2006 Mar 23;122(2):198-208
references.pmid: 16256235
references.citation: Water Res. 2006 Feb;40(4):744-52
references.pmid: 16442142