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da Silva EM, de Araújo SC, Veras STS, Pinheiro AAD, Motteran F, Kato MT, Florencio L, Leite WRM. Anaerobic co-digestion of microalgal biomass, sugarcane vinasse, and residual glycerol from biodiesel using simplex-centroid mixture design: methane potential, synergic effect, and microbial diversity. Environ Sci Pollut Res Int 2024:10.1007/s11356-024-33193-1. [PMID: 38605273 DOI: 10.1007/s11356-024-33193-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/29/2024] [Indexed: 04/13/2024]
Abstract
Microalgal biomass (MB) is a promising feedstock for bioenergy production. Nonetheless, the cell recalcitrance and the low C/N ratio limit the methane yield during anaerobic digestion. As an alternative to overcome these challenges, MB co-digestion with different feedstocks has been proposed. Thus, this study evaluated the anaerobic co-digestion (AcoD) of MB cultivated in wastewater with sugarcane vinasse (VIN) and residual glycerol from biodiesel production (GLY). Batch tests were conducted using augmented simplex-centroid mixture design to investigate the impact of AcoD on methane production (SMP), synergistic effects, and the influence on microbial community. When compared to MB digestion, 150 NmL CH4.g-1VS, binary and ternary AcoD achieved SMP increases from 120 to 337%. The combination of 16.7:16.7:66.7 (MB:VIN:GLY) showed the highest SMP for a ternary mixture (631 NmL CH4.g-1VS). Optimal synergies ranged from 1.3 to 1.4 and were primarily found for the MB:GLY AcoD. Acetoclastic Methanosaeta genus was predominant, regardless the combination between substrates. Despite the largest SMP obtained from the MB:GLY AcoD, other ternary mixtures were also highly synergetic and therefore had strong potential as a strategic renewable energy source.
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Affiliation(s)
- Edilberto Mariano da Silva
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation, Recife, PE, 50740-530, Brazil
| | - Sayonara Costa de Araújo
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation, Recife, PE, 50740-530, Brazil
| | - Shyrlane Torres Soares Veras
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation, Recife, PE, 50740-530, Brazil
| | - Agnes Adam Duarte Pinheiro
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation, Recife, PE, 50740-530, Brazil
| | - Fabrício Motteran
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation, Recife, PE, 50740-530, Brazil
| | - Mario Takayuki Kato
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation, Recife, PE, 50740-530, Brazil
| | - Lourdinha Florencio
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation, Recife, PE, 50740-530, Brazil
| | - Wanderli Rogério Moreira Leite
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation, Recife, PE, 50740-530, Brazil.
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Kampioti A, Komilis D. Anaerobic co-digestion of coffee waste with other organic substrates: A mixture experimental design. Chemosphere 2022; 297:134124. [PMID: 35247448 DOI: 10.1016/j.chemosphere.2022.134124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 02/03/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
The viability of the anaerobic co-digestion of coffee waste (CFW) with other organic waste (cow manure-CM, food waste-FW, anaerobic sludge-AS) was investigated through measurements of biogas generation of various mixtures of the above substrates. The experiments were designed following the principles of mixture experimental design. Four different mixtures were tested anaerobically at 37 °C in 500 mL and 1 L anaerobic vessels. AS was used in some mixtures as an inoculum. The results were fitted to two empirical models in which biogas generation was the dependent variable and the fractions of the components in the mixture were the independent variables. According to the empirical models, the co-digestion of CFW with AS appeared to have a positive (synergistic) effect, generating 201 mL g-1 VSmixture, which was 12% higher than the amount generated from the mono-digestion of AS (179 mL g-1 VS). On the other hand, the co-digestion of CFW with CM and of CFW with FW had a negative (antagonistic) effect on biogas generation indicating that CFW inhibits biogas generation when mixed with CM and FW. Although the mono-digestion of CM resulted in an average of 149 mL g-1 VS of biogas, when CM was combined with CFW in a mixture, biogas generation was highly reduced by 43.8%-85.1%, depending on the CFW content of the mixtures, which was 25% and 50%, respectively. When co-digesting CFW with FW, the biogas generated was 7.02 mL g-1 VS that was obtained only from the FW in the mixture.
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Affiliation(s)
| | - Dimitrios Komilis
- Laboratory of Solid and Hazardous Waste, Department of Environmental Engineering, Democritus University of Thrace, Xanthi, 67132, Greece.
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Nestel D, Papadopoulos NT, Pascacio-Villafán C, Righini N, Altuzar-Molina AR, Aluja M. Resource allocation and compensation during development in holometabolous insects. J Insect Physiol 2016; 95:78-88. [PMID: 27650504 DOI: 10.1016/j.jinsphys.2016.09.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/15/2016] [Accepted: 09/16/2016] [Indexed: 06/06/2023]
Abstract
We provide an extensive review on current knowledge and future research paths on the topic of resource allocation and compensation during development in holometabolous insects, emphasizing the role of resource management during development, and how compensatory mechanisms may be acting to remediate nutritional deficiencies carried over from earlier stages of development. We first review resource allocation in "open" and "closed" developmental stages and then move on to the topic of modelling resource allocation and its trade-offs. In doing so, we review novel methodological developments such as response-surface methods and mixture experiments as well as nutritional geometry. We also dwell on the fascinating topic of compensatory physiology and behavior. We finish by discussing future research paths, among them the emerging field of nutrigenomics and gut microbiome, which will shed light into the yet poorly understood role of the symbiotic microbiota in nutrient compensation or assimilation.
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Affiliation(s)
- David Nestel
- Institute of Plant Protection, Dept. of Entomology, ARO, The Volcani Ctr., Beit Dagan 50250, Israel.
| | - Nikos T Papadopoulos
- Laboratory of Entomology and Agricultural Zoology, Dept. of Agriculture Crop Production and Rural Environment, University of Thessaly, N. Ionia, Volos, Greece
| | - Carlos Pascacio-Villafán
- Instituto de Ecología, A.C., Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores, 91070 Xalapa, Veracruz, Mexico
| | - Nicoletta Righini
- Instituto de Ecología, A.C., Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores, 91070 Xalapa, Veracruz, Mexico
| | - Alma R Altuzar-Molina
- Instituto de Ecología, A.C., Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores, 91070 Xalapa, Veracruz, Mexico
| | - Martín Aluja
- Instituto de Ecología, A.C., Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores, 91070 Xalapa, Veracruz, Mexico
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