Direct interspecies electron transfer mechanisms of a biochar-amended anaerobic digestion: a review

Valentin, Marvin T.; Luo, Gang; Zhang, Shicheng; Białowiec, Andrzej

doi:10.1186/s13068-023-02391-3

Cited by 7 publications

(2 citation statements)

References 197 publications

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“…Biochar could be used in improving anaerobic digestion as mentioned by Valentin et al 19 whose stated that properties such as specific surface area (SSA), cation exchange capacity, presence of functional groups and electrical conductivity were found favorable for increased methane production, reduction of lag phase, and adsorption of inhibitors.…”

Section: Introductionmentioning

confidence: 99%

Biochar production under different pyrolysis temperatures with different types of agricultural wastes

Khater,

Bahnasawy,

Hamouda

et al. 2024

Sci Rep

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The main aim of this study is to determine the physical and chemical properties of biochar synthesized from different materials (straw rice, sawdust, sugar cane, and tree leaves) at different pyrolysis temperatures (400, 600, and 800 °C). The physical and chemical properties such as moisture content, water holding capacity, bulk density, and porosity; and pH, electrical conductivity (EC), organic matter, organic carbon, total nitrogen, potassium, phosphorus, calcium, magnesium, sodium, and sulfur were determined, respectively. The results show that the biochar yield decreased with increasing pyrolysis temperature, and the values of the analyzed properties varied depending on the type of biochar and pyrolysis temperature. The moisture content ranged from 1.11 to 4.18%, and the water holding capacity ranged from 12.9 to 27.6 g water g−1 dry sample. The highest value of bulk density (211.9 kg m−3) was obtained from sawdust at a pyrolysis temperature of 800 °C. The porosity values ranged from 45.9 to 63.7%. The highest values of pH and EC (10.4 and 3.46 dS m−1) were obtained from tree leaves at a pyrolysis temperature of 800 °C. Total organic matter ranged from 66.0 to 98.1%, total organic carbon ranged from 38.3 to 56.9%, and total nitrogen ranged from 0.4 to 1.9%. The highest values of phosphorus and calcium content (134.6 and 649.0 mg kg−1) were obtained from sugar cane at a pyrolysis temperature of 800 °C. The magnesium, sodium and sulfur content had ranges of 10.9–51.7, 1124–1703 and 3568–12,060 mg kg−1, respectively.

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Section: Introductionmentioning

confidence: 99%

Biochar production under different pyrolysis temperatures with different types of agricultural wastes

Khater,

Bahnasawy,

Hamouda

et al. 2024

Sci Rep

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“…Anaerobic digestion (AD) is an efficient, economical, and widely established technology to treat organic waste while recovering energy (biogas) and producing a value-added fertilizer (digestate) (Valentin et al, 2023), which can be directly applied to the soil or further processed through composting to obtain a higher-quality product (compost). However, it faces several challenges, including low methane productivity, long retention time, low organic loading rate (OLR), instability related to ammonia and acid inhibition, and metal accumulation (Pramanik et al, 2019;Kumar et al, 2021;Zhao et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Characterization of biochars of different origin and application to the anaerobic digestion of source-selected organic fraction of municipal solid waste under batch conditions and at different dosages

García-Prats,

González,

Sánchez

2024

Front. Chem. Eng.

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Anaerobic digestion (AD) is a wide-spread strategy to manage organic waste and recover valuable products but faces some limitations that could be overcome with additives like biochar (BC). The production of BC defines its properties, which in turn determine its effect on AD performance and methane yield. In this study, three biochars (BC1, BC2 and BC3) were characterized using several techniques (SEM imaging, BET, GC, ICP and FTIR). The properties of BC were found to be defined both by the feedstock and the production process. The BC were then applied to the AD of the organic fraction of municipal solid waste (OFMSW) using three doses (1, 5% and 10% w/w TS). Compared to the control, there was an increase in methane production in BC3 at doses 1% and 5% (+15 and +30%, respectively) and a decrease in BC1 and BC2 at 1% (−33% and −19%, respectively). The decrease in biogas production was often paired with an increased methane content. A two-way ANOVA analysis showed that the interaction of biochar dose and type had a significant effect on methane yield, meaning that the effect of BC on AD cannot be predicted with the dose or the type alone. When a second substrate feeding was performed, no significant differences on methane production were observed among the experimental conditions. Key aspects to properly assess the economic viability of the process have been also discussed. Further experiments could help to fill knowledge gaps and clarify the roles of BC characteristics and dose on AD performance.

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Synergistic effect of biological pre-treatment on co digestion of rice straw and sewage sludge: Process optimization and microbial interactions

Arelli,

Basava Rao,

Mamindlapelli

et al. 2024

Biocatalysis and Agricultural Biotechnology

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Direct interspecies electron transfer mechanisms of a biochar-amended anaerobic digestion: a review

Cited by 7 publications

References 197 publications

Biochar production under different pyrolysis temperatures with different types of agricultural wastes

Biochar production under different pyrolysis temperatures with different types of agricultural wastes

Characterization of biochars of different origin and application to the anaerobic digestion of source-selected organic fraction of municipal solid waste under batch conditions and at different dosages

Synergistic effect of biological pre-treatment on co digestion of rice straw and sewage sludge: Process optimization and microbial interactions

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