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Mycoremediation of vinasse by surface response methodology and preliminary studies in air-lift bioreactors
- Source :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- This work evaluated the degradation of sugarcane vinasse with the production of biomass by Pleurotus sajor-caju CCB020, considering the combination of temperature and pH effects, using surface response methodology (RSM). A 22 complete central factorial composite experiment was used to analyze the results. The optimum temperature and pH values were respectively 27°C and 5.6 for maximum decolorization yield and 20°C and 6.8 for maximum biomass production. In parallel, scale-up experiments under conditions of 30°C and initial pH 5.0 were evaluated in two different air-lift bioreactors of 7.0L. Under these conditions, reductions of 53% and 58% in chemical oxygen demand (COD) and 71% and 58% in biological oxygen demand (BOD) were obtained respectively with the concentric tube type air-lift bioreactor with an increased degassing zone and without an increased degassing zone. Under these conditions, this study concluded that the systematic combination of P. sajor-caju and vinasse can be applied in the biodegradation process of refractory compounds contained in vinasse, concomitant to obtaining biomass and laccase and manganese peroxidase enzymes. Due to the good performance of the air-lift bioreactors, they can be used in scale studies in future industrial vinasse applications, besides it is possible to emphasize that different configurations in the bioreactor can affect the efficiency of the process.<br />Supplementary data to this article can be found online at: https://doi.org/10.1016/j.chemosphere.2019.125432.<br />info:eu-repo/semantics/publishedVersion
- Subjects :
- Biochemical oxygen demand
Environmental Engineering
Ligninolytic enzymes
Health, Toxicology and Mutagenesis
0208 environmental biotechnology
Vinasse
Biomass
Air-lift bioreactor
02 engineering and technology
010501 environmental sciences
Waste Disposal, Fluid
01 natural sciences
7. Clean energy
Fungal biomass
Bioreactors
Bioreactor
Environmental Chemistry
0105 earth and related environmental sciences
Biological Oxygen Demand Analysis
Laccase
Science & Technology
Chemistry
Chemical oxygen demand
Temperature
Public Health, Environmental and Occupational Health
Decolorization
General Medicine
General Chemistry
Mycoremediation
Biodegradation
Sugarcane vinasse
Pulp and paper industry
Pollution
Saccharum
020801 environmental engineering
Biodegradation, Environmental
Peroxidases
Subjects
Details
- ISSN :
- 00456535
- Volume :
- 244
- Database :
- OpenAIRE
- Journal :
- Chemosphere
- Accession number :
- edsair.doi.dedup.....4c786bc61da36a77a157bd505e7cec1a