Marine macroalgae waste: A potential feedstock for biogas production

Pardilhó, Sara; Boaventura, Rui; Almeida, Manuel Fonseca; Dias, Joana Maia

doi:10.1016/j.jenvman.2021.114309

Cited by 25 publications

(13 citation statements)

References 30 publications

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“…This agent can be either the native flora or an inoculum. In the literature, several authors mention the necessity and significant effects generated by the use and control of this agent (Fathi et al, 2020;Li et al, 2016;Pardilhó et al, 2022). In this study, Aspergillus niger was used as a biotransformation agent; it is one of the microorganisms widely used in biotechnology and, aerobic and anaerobic biotransformation processes to valorize organic wastes due to its ease of cultivation, wide spectrum of degradation and it is also known for its resistance to stress conditions and pesticides (Fathi et al, 2020(Fathi et al, , 2021Hadidi et al, 2020;Hamdi et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Ozi

Boutaleb

Hadidi

et al. 2022

Environmental Quality Mgmt

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This research work consists on valorizing poultry waste by biotransformation into biofertilizers, associating this agro‐industrial waste with algae (abundant natural resources) and molasses (a by‐product of the sugar refining industry) ensuring a good contribution of nutritional chemical elements and obtaining a balanced formulation. A total of seven different formulations of the above three components, were examined in a simplex centroid design. A fungal inoculum of Aspergillus niger was used as a fermentation agent for better quality of biotransformation. The monitoring of this biotransformation is ensured during 15 days by following the evolution of physicochemical and microbiological parameters and, to understand the bioconversion of the simple compounds of the biofertilizer mixture such as short aliphatic chains, sugar, and amino acids into soluble mineral compounds, a Fourier transform infrared spectroscopy (FTIR) analysis was carried out before and after biotransformation. Finally, germination and fertilization tests were performed to evaluate the efficiency of the final product on a barley crop. The overall results of the present study showed that the mixture which contained 68.75% poultry waste, 12.5% molasses, and 18.75% algae presented the better microbiological and chemical safety criteria required for a good biofertilizer according to NF U44‐551 standard.

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Section: Introductionmentioning

confidence: 99%

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Ozi

Boutaleb

Hadidi

et al. 2022

Environmental Quality Mgmt

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“…In that study, the OLR reached 1.66 g VS/L-d. By mixing macroalgae with co-substrates, higher yields of biogas and methane can be obtained. A previous study [ 3 ] has shown that a maximum methane yield of 146 L/kg VS is achieved using the marine macroalgae Saccorhiza polyschides . The maximum concentration of methane in the biogas was 64.5% when the experiments were carried out in a single-stage bioreactor under mesophilic conditions.…”

Section: Resultsmentioning

confidence: 99%

“…The production of biogas using agricultural and eutrophication products such as the algae Saccorhiza polyschides allows the simultaneous digestion of organic waste and the generation of a multipurpose energy carrier (methane) that is further converted into electricity and heat [ 1 , 2 , 3 ]. Biogas is produced during the anaerobic digestion of organic matter.…”

Section: Introductionmentioning

confidence: 99%

Changes in Microbiota Composition during the Anaerobic Digestion of Macroalgae in a Three-Stage Bioreactor

Vasiliauskienė,

Pranskevičius,

Dauknys

et al. 2024

Microorganisms

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The use of microalgae as a raw material for biogas production is promising. Macroalgae were mixed with cattle manure, wheat straw, and an inoculant from sewage sludge. Mixing macroalgae with co-substrates increased biogas and methane yield. The research was carried out using a three-stage bioreactor. During biogas production, the dynamics of the composition of the microbiota in the anaerobic chamber of the bioreactor was evaluated. The microbiota composition at different organic load rates (OLRs) of the bioreactor was evaluated. This study also demonstrated that in a three-stage bioreactor, a higher yield of methane in biogas was obtained compared to a single-stage bioreactor. It was found that the most active functional pathway of methane biosynthesis is PWY-6969, which proceeds via the TCA cycle V (2-oxoglutarate synthase). Microbiota composition and methane yield depended on added volatile solids (VSadded). During the research, it was found that after reducing the ORL from 2.44 to 1.09 kg VS/d, the methane yield increased from 175.2 L CH4/kg VSadded to 323.5 L CH4/kg VSadded.

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“…Anaerobic digestion of MMW, mainly composed of the phaeophyte Saccorhiza polyschides, showed the maximum biogas yield of 227 mL/g VS in 53 operational days and maximum biomethane content of 64.5% in 51 days due to the increase of total solid content up to 2.5% [121]. At the end of anaerobic digestion, 43% COD reduction and 46% VS reduction were recorded.…”

Section: Anaerobic Digestion Of Seaweedmentioning

confidence: 98%

Integrated Marine Biogas: A Promising Approach towards Sustainability

et al. 2022

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Fossil fuel depletion, climate change, and increased global energy demands are the driving forces to find alternative sources of energy. Marine-based biorefinery has been recently discussed as a promising route to mitigate the environmental challenges, enhance the energy recovery, and provide a potential source for value-added products. Anaerobic digestion is a promising technology that can convert the organic compounds of marine ecosystems into biogas. To date, a comprehensive review incorporating integrated biogas potential and effective approaches to enhance seaweed digestibility for biogas production from marine resources has not been reported. Thus, the present review aims to explore and comprehensively present seaweed and other marine resources for potential biogas production. The basics and challenges of biogas production from seaweed are elucidated. The impact of biochemical composition on biogas and the microbial communities involved in anaerobic digestion of seaweed are discussed. Utilization of different techniques such as pretreatment, co-digestion, and sequential extraction of seaweed biomass to enhance the biogas yield and to mitigate the effect of inhibitors are presented. Specifically, this article evaluates the co-digestion of seaweed with other biomass feedstocks or liquid biowastes. Integration of marine microalgae cultivation on anaerobic digestate for value-added compound production, biogas upgrading, and bioenergy recovery provides a promising approach towards a zero-waste marine-based system.

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Marine macroalgae waste: A potential feedstock for biogas production

Cited by 25 publications

References 30 publications

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Changes in Microbiota Composition during the Anaerobic Digestion of Macroalgae in a Three-Stage Bioreactor

Integrated Marine Biogas: A Promising Approach towards Sustainability

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