Biostimulation of Food Waste Anaerobic Digestion Supplemented with Granular Activated Carbon, Biochar and Magnetite: A Comparative Analysis

Altamirano-Corona, María Fe; Anaya-Reza, Omar; Durán-Moreno, Alfonso

doi:10.2139/ssrn.3778593

Cited by 2 publications

(3 citation statements)

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“…The biochar preparation method was adopted from a previous study (Altamirano‐Corona et al, 2021; Trakal et al, 2016). The BC used in this experiment was prepared from wheat straw, which was washed, dried, chopped, and pyrolyzed at 400°C.…”

Section: Methodsmentioning

confidence: 99%

“…The different treatments based on the additive material and its concentrations were designated as follows: CK for 0% additives, BC2.5%, BC5%, BC7.5%, MB2.5%, MB5%, and MB7.5%. These concentrations selected in this study were within the appropriate dosage range of biochar added to food waste that has been previously researched (Altamirano‐Corona et al, 2021; Cai et al, 2016). The experiments were performed in triplicate.…”

Section: Methodsmentioning

confidence: 99%

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Magnetic biochar affects the metabolic pathway in methanogenesis of anaerobic digestion of food waste

Gao

Zhi

et al. 2022

GCB Bioenergy

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To alleviate pollution and promote clean energy production, food waste can be used to produce methane through anaerobic digestion (AD). In this study, wheat straw was used to produce biochar (BC) and magnetic biochar (MB) as additives for AD of food waste. MB2.5% and BC2.5% led to the highest methane production. The main action mechanism of the additives in AD was the change in environmental factors upon stimulating microorganisms to rapidly metabolize volatile fatty acids. The stimulation of microbial function increased the abundance of the methanogenesis pathways. Methanosarcina was the most dominant archaea in the four methanogenesis modules, and the microbial community changed more clearly with time than with treatment. This study is innovative in finding the effectiveness of BC and MB treatments attributed to the abundance of methanogenesis modules, especially MB2.5% treatment retained its advantage until the later stage of digestion in AD process.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Magnetic biochar affects the metabolic pathway in methanogenesis of anaerobic digestion of food waste

Gao

Zhi

et al. 2022

GCB Bioenergy

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“…The study centered around the impact of the biochar concentration on the AD of OMW at different COD concentrations: 10 g/L, 15 g/L and 20 g/L. Based on previous studies (Luo et al, 2014;Altamirano-Corona et al, 2021), two biochar concentrations were used (5 g/L and 10 g/L).…”

Section: Experimental Designmentioning

confidence: 99%

Role of biochar in anaerobic microbiome enrichment and methane production enhancement during olive mill wastewater biomethanization

Abid

Karray

Kallel

et al. 2023

Front. Bioeng. Biotechnol.

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The current research work attempted to investigate, for the first time, the impact of biochar addition, on anaerobic digestion of olive mill wastewater with different initial chemical oxygen demand loads in batch cultures (10 g/L, 15 g/L, and 20 g/L). Methane yields were compared by applying one-way analysis of variance (ANOVA) followed by post-hoc Tukey’s analysis. The results demonstrated that adding at 5 g/L biochar to olive mill wastewater with an initial chemical oxygen demand load of 20 g/L increased methane yield by 97.8% and mitigated volatile fatty acid accumulation compared to the control batch. According to the results of microbial community succession revealed by the Illumina amplicon sequencing, biochar supplementation significantly increased diversity of the microbial community and improved the abundance of potential genera involved in direct interspecies electron transfer, including Methanothrix and Methanosarcina. Consequently, biochar can be a promising alternative in terms of the recovery of metabolic activity during anaerobic digestion of olive mill wastewater at a large scale.

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Biostimulation of Food Waste Anaerobic Digestion Supplemented with Granular Activated Carbon, Biochar and Magnetite: A Comparative Analysis

Cited by 2 publications

References 0 publications

Magnetic biochar affects the metabolic pathway in methanogenesis of anaerobic digestion of food waste

Magnetic biochar affects the metabolic pathway in methanogenesis of anaerobic digestion of food waste

Role of biochar in anaerobic microbiome enrichment and methane production enhancement during olive mill wastewater biomethanization

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