The recycling of biodigested vinasse in an upflow anaerobic sludge blanket reactor is a feasible approach for the conservation of freshwater in the biofuel ethanol industry
| Autor: | Rose Maria Duda, Leonardo Lucas Madaleno, Roberto Alves de Oliveira, Mayara Aparecida Kesserling, Josiene Rocha Teixeira, Valciney Gomes de Barros |
|---|---|
| Přispěvatelé: | Technology College, Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
020209 energy
Strategy and Management Vinasse Water conservation Biogas 02 engineering and technology Wastewater reuse Industrial and Manufacturing Engineering Anaerobic digestion 0202 electrical engineering electronic engineering information engineering Sugarcane molasses Effluent 0505 law General Environmental Science Renewable Energy Sustainability and the Environment Aquatic ecosystem 05 social sciences Building and Construction Contamination Pulp and paper industry Sugarcane vinasse Biofuel 050501 criminology Environmental science Fermentation |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2020-12-12T02:38:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-20 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The generation of large volumes of vinasse during the production of biofuel ethanol is a challenging problem since inappropriate application of the byproduct as an agro-fertigant can give rise to contamination of soil and watercourses and cause harm to aquatic life. The aims of the study were(i) to evaluate an alternative strategy involving the generation of biogas by anaerobic digestion of sugarcane vinasse in two-stage upflow anaerobic sludge blanket (UASB) reactors (R1 and R2 connected in series), and (ii) to determine the ethanol content and fermentation efficiency of mashes prepared by diluting sugarcane molasses with deionized water, fresh vinasse and effluents from R1 or R2, both before and after submission to the Fenton reaction. The highest percentages of ethanol were obtained with fermentation mashes prepared from molasses diluted with Fenton-treated R1 (5.1%) or R2 effluents (5.7%) or with non-treated R2 effluent (5.7%). The corresponding fermentation efficiencies of these processes were 88.5, 92.1 and 89.3%. The proposed combination of biofuel and biogas production would provide a sustainable source of energy, contribute to the safe disposal of large quantities of vinasse and help to reduce the volume of freshwater employed by the sugarcane processing industry. Paula Souza Center Technology College Laboratory of Environmental Sanitation Department of Rural Engineering São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Graduate Program in Agricultural and Livestock Microbiology São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Laboratory of Environmental Sanitation Department of Rural Engineering São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Graduate Program in Agricultural and Livestock Microbiology São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences CAPES: 2015/05567-4 CNPq: 312093/2016-0 CNPq: 456426/2014-0 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|