6533b82efe1ef96bd1293239
RESEARCH PRODUCT
Optimization of acetate production from citrus wastewater fermentation
Gaspare VivianiSanto Fabio CorsinoDaniele Di TrapaniMarco CapodiciMichele Torregrossasubject
BioconversionBioconversion0208 environmental biotechnologyGeography Planning and Development02 engineering and technology010501 environmental sciences01 natural sciencesHydrolysisNutrientManagement. Industrial management0105 earth and related environmental sciencesWater Science and TechnologyCitrus wastewaterAnaerobic processSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleChemistryAcetateSubstrate (chemistry)Pulp and paper industryHD28-70020801 environmental engineeringOrganic fractionWastewaterFermentationFermentationValorisationdescription
Abstract Citrus wastewater is a sugar-rich waste stream suitable for the recovery of energy of material from its treatment. In this study, fermentation of citrus wastewater was carried out to assess the optimal conditions to maximize the bioconversion of the organic substrate into acetate. Unbalanced nutrient (C: N: P 200:0.1:0.1) enabled the highest acetate production. The presence of the particulate organic fraction enabled to obtain a higher acetate concentration regardless the initial COD concentration. Initial pH values higher than 5 did not cause substantial differences on the maximum bioconversion of COD into acetate in Trial 3, whereas pH lower than 5 hindered the hydrolysis process. Lastly, the bioconversion rate of the organic substrate into acetate decreased from a maximum of 23% to a minimum of 8% related to the initial COD. The achieved results demonstrated that the characteristics of citrus wastewater enable its valorisation without the need to apply energy-consuming processes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-06-01 |