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Roberto Alves de Oliveira
Researcher at Sao Paulo State University
Publications - 37
Citations - 838
Roberto Alves de Oliveira is an academic researcher from Sao Paulo State University. The author has contributed to research in topics: Anaerobic digestion & Biogas. The author has an hindex of 15, co-authored 34 publications receiving 679 citations.
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Journal ArticleDOI
Comparison of hexamethyldisilazane and critical point drying treatments for SEM analysis of anaerobic biofilms and granular sludge.
Juliana Calábria de Araújo,Francisco Javier Cuba Teran,Roberto Alves de Oliveira,Edson Aparecido Abdul Nour,Martha A P Montenegro,J. R. Campos,Rosana Filomena Vazoller +6 more
TL;DR: A fast procedure for scanning electron microscopy (SEM) analysis in which hexamethyldisilazane (HMDS) solvent is used to remove liquids from a microbiological specimen and does not cause cell structure disruption.
Journal ArticleDOI
Biomethane production from vinasse in upflow anaerobic sludge blanket reactors inoculated with granular sludge
TL;DR: The main objective of this study was to evaluate the anaerobic conversion of vinasse into biomethane with gradual increase in organic loading rate (OLR) in two upflowAnaerobic sludge blanket (UASB) reactors, R1 and R2, with volumes of 40.5 and 21.5 L in the mesophilic temperature range.
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Improved methane production from sugarcane vinasse with filter cake in thermophilic UASB reactors, with predominance of Methanothermobacter and Methanosarcina archaea and Thermotogae bacteria.
Valciney Gomes de Barros,Rose Maria Duda,Juliana da Silva Vantini,Wellington Pine Omori,Maria Inês Tiraboschi Ferro,Roberto Alves de Oliveira +5 more
TL;DR: This study demonstrates increased methane production from vinasse through the use of sugarcane filter cake and improved effluent recirculation, with elevated organic loading rates (OLR) and good reactor stability.
Journal ArticleDOI
Treatment of sugarcane vinasse by combination of coagulation/flocculation and Fenton’s oxidation
Lígia F. Guerreiro,Carmen S.D. Rodrigues,Rose Maria Duda,Roberto Alves de Oliveira,Rui A.R. Boaventura,Luis M. Madeira +5 more
TL;DR: The use of dissolved iron resulting from coagulation/flocculation as catalyst in the second stage - Fenton's oxidation - was shown to be an innovative and economically attractive strategy and allowed to obtain the highest organic matter removal efficiency.
Journal ArticleDOI
Combination of chemical coagulation, photo-Fenton oxidation and biodegradation for the treatment of vinasse from sugar cane ethanol distillery
Carmen S.D. Rodrigues,Ana Rita Neto,Rose Maria Duda,Roberto Alves de Oliveira,Rui A.R. Boaventura,Luis M. Madeira +5 more
TL;DR: In this article, the post-treatment of biodigested sugarcane vinasse was envisaged in the present study following three different approaches: i) coagulation/flocculation and photo-Fenton reaction.