| Title | Investigating the efficiency of a two-stage anaerobic-aerobic process for the treatment of confectionery industry wastewaters with simultaneous production of biohydrogen and polyhydroxyalkanoates. |
|---|---|
| ID_Doc | 25801 |
| Authors | Kora, E; Antonopoulou, G; Zhang, Y; Yan, Q; Lyberatos, G; Ntaikou, I |
| Title | Investigating the efficiency of a two-stage anaerobic-aerobic process for the treatment of confectionery industry wastewaters with simultaneous production of biohydrogen and polyhydroxyalkanoates. |
| Year | 2024 |
| Published | |
| Abstract | The scope of the current study was to investigate the efficiency of a two-stage anaerobic-aerobic process for the simultaneous treatment and valorization of selective wastewater streams from a confectionary industry. The specific wastewater (confectionary industry wastewater, CIW) was a mixture of the rinsing eluting during washing of the cauldrons in which jellies and syrups were produced, and contained mainly readily fermentable sugars, being thus of high organic load. The first stage of the process was the dark fermentation (DF) of the CIW in continuous, attached-biomass systems, in which the effect on hydrogen yields and distribution of metabolites were studied for different packing materials (ceramic or plastic), hydraulic retention times, HRTs (12 h-30 h) and feed substrate concentration (20 g COD/L- 50 g COD/L). In the second stage, the effectiveness of the aerobic treatment of the DF effluents was evaluated in terms of the reduction of the organic load and the production of polyhydroxyalkanoates (PHAs) through an enriched mixed microbial culture (MMC). The MMC was developed in a continuous draw and fill system, in which the accumulation potential of PHAs was studied. It was shown that the hydrogen production rates decreased for increasing substrate concentration and HRTs, with a maximum of 12.70 +/- 0.35 m3 H2/m3 initial CIW achieved for the lowest HRT and feed concentration and using ceramic beads as packing material. Butyrate, acetate and lactate were the main metabolites generated in all cases, in different ratios. The distribution of metabolites during DF was shown to highly affect the efficiency of the second process in terms of both the reduction of organic load and the PHAs yields. The highest removal of organic load achieved after 48 h of aerobic treatment was 84.0 +/- 0.9 %, whereas the maximum PHAs yield was 21.46 +/- 0.13 kg PHAs/ m3 initial CIW. |
Similar Articles
| ID | Score | Article |
|---|---|---|
15559
|
Moretto, G; Russo, I; Bolzonella, D; Pavan, P; Majone, M; Valentino, F An urban biorefinery for food waste and biological sludge conversion into polyhydroxyalkanoates and biogas(2020) | |
| 11051
|
Capson-Tojo, G; Rouez, M; Crest, M; Steyer, JP; Delgenès, JP; Escudié, R Food waste valorization via anaerobic processes: a review(2016)Reviews In Environmental Science And Bio-Technology, 15, 3 | |
| 9236
|
Kora, E; Tsaousis, PC; Andrikopoulos, KS; Chasapis, CT; Voyiatzis, GA; Ntaikou, I; Lyberatos, G Production efficiency and properties of poly (3hydroxybutyrate-co-3hydroxyvalerate) generated via a robust bacterial consortium dominated by Zoogloea sp. using acidified discarded fruit juices as carbon source(2023) | |
| 13152
|
Ahuja, V; Singh, PK; Mahata, C; Jeon, JM; Kumar, G; Yang, YH; Bhatia, SK A review on microbes mediated resource recovery and bioplastic (polyhydroxyalkanoates) production from wastewater(2024)Microbial Cell Factories, 23, 1 | |
| 12502
|
Cesaro, A; Conte, A; Carrère, H; Trably, E; Paillet, F; Belgiorno, V Formic acid pretreatment for enhanced production of bioenergy and biochemicals from organic solid waste(2020) | |
| 23496
|
Carvalheira, M; Amorim, CL; Oliveira, AC; Guarda, EC; Costa, E; Teixeira, MR; Castro, PML; Duque, AF; Reis, MAM Valorization of Brewery Waste through Polyhydroxyalkanoates Production Supported by a Metabolic Specialized Microbiome(2022)Life-Basel, 12, 9 | |
| 14392
|
Traina, F; Corsino, S; Capodici, M; Licitra, E; Di Bella, G; Torregrossa, M; Viviani, G Combined recovery of polyhydroxyalkanoates and reclaimed water in the mainstream of a WWTP for agro-food industrial wastewater valorisation by membrane bioreactor technology(2024) | |
| 14827
|
Battista, F; Frison, N; Pavan, P; Cavinato, C; Gottardo, M; Fatone, F; Eusebi, AL; Majone, M; Zeppilli, M; Valentino, F; Fino, D; Tommasi, T; Bolzonella, D Food wastes and sewage sludge as feedstock for an urban biorefinery producing biofuels and added-value bioproducts(2020)Journal Of Chemical Technology And Biotechnology, 95, 2 | |
| 13163
|
Chua, GK; Tan, FHY; Chew, FN; Mohd-Hairul, AR; Ahmad, MAA Food waste hydrolysate as fermentation medium: Comparison of pre-treatment methods(2021) | |
| 13275
|
Esteban-Gutiérrez, M; Garcia-Aguirre, J; Irizar, I; Aymerich, E From sewage sludge and agri-food waste to VFA: Individual acid production potential and up-scaling(2018) |