Closing the circle for urban food waste anaerobic digestion: The use of digestate and biochar on plant growth in potting soil

Mickan, Bede S.; Ren, Ai‐tian; Bühlmann, Christopher H.; Ghadouani, Anas; Solaiman, Zakaria M.; Jenkins, Sue; Pang, Jiayin; Ryan, Megan H.

doi:10.1016/j.jclepro.2022.131071

Cited by 43 publications

(23 citation statements)

References 91 publications

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“…A higher C‐fraction in biochar is of primary importance (Li et al, 2021; Nzediegwu et al, 2021), and biochar application increases essential mineral nutrients in the soil (Yue et al, 2016). Nano‐BC amendment can increase trace element accumulation due to higher adsorption affinity (Mickan et al, 2022; Song et al, 2019; Yue et al, 2019). Recently, nano‐BC soil application at 0.7%–1.0% substantially reduced soil erosion on sloping land and substantially improved nutrient and water retention in the Loess Plateau of China (Zhou et al, 2020).…”

Section: Improvement In Soil Physiochemical Propertiesmentioning

confidence: 99%

“…It is pertinent to mention here that feedstock materials determine the final N‐fraction of the manufactured biochar, which generally ranges between 0.29%–2.52% for different materials (Ahmad et al, 2021), while pyrolysis temperature is a critical determinant since higher pyrolysis temperatures cause N‐loses via volatilization (Hu et al, 2020; Igalavithana et al, 2020; Vamvuka et al, 2018). In a recent study, biochar application in combination with food‐waste‐derived digestate promoted tomato growth primarily due to N‐retention and reduction of N mineralization and soil leaching (Mickan et al, 2022).…”

Section: Improvement In Soil Physiochemical Propertiesmentioning

confidence: 99%

“…A higher C-fraction in biochar is of primary importance Nzediegwu et al, 2021), and biochar application increases essential mineral nutrients in the soil (Yue et al, 2016). Nano-BC amendment can increase trace element accumulation due to higher adsorption affinity (Mickan et al, 2022;Song et al, 2019;Yue et al, 2019).…”

Section: Nutrient Availabilitymentioning

confidence: 99%

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Nano‐biochar: Properties and prospects for sustainable agriculture

et al. 2023

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Biochar is an extremely valuable carbon black material used since the Pre‐Columbian Era in Latin America and is known for its properties to promote soil fertility and sustain crop production. Modern civilization has followed the footsteps of ancient civilizations and has prepared nano‐sized biochar (nano‐BC). The synthesis of nano‐BC can be achieved using different feedstock materials via pyrolysis, yielding bulk‐BCs which are mechanical transformed into the nano‐BCs, the final value‐added product. This review provides insights into structural, functional, and elemental properties concerning synthesis, surface properties including functional groups, and carbon stability. Moreover, the prospects of improving soil physicochemical properties including CEC, nutrient availability, soil water retention, and buffering capacity are discussed with agricultural implications. Mechanistic insights have been provided regarding how nano‐BC can improve soil health and could promote plant growth and physio‐biochemical properties, which further pave the way for its application to improve plant resilience to abiotic stress factors. Last, limited studies have been conducted that elucidate potential negative effects including contaminant mobilization and residual effects and these are also critically discussed. Above all, nano‐BC could be used as a beneficial soil amendment to boost crop production and enhance soil fertilities.

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Section: Improvement In Soil Physiochemical Propertiesmentioning

confidence: 99%

Section: Improvement In Soil Physiochemical Propertiesmentioning

confidence: 99%

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Nano‐biochar: Properties and prospects for sustainable agriculture

et al. 2023

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“…92,93 Biochar alters biological processes for the conversion of organic N into plant-available N by changing the microbial composition of soils or growth media. 94 Furthermore, biochar supports the growth of vegetation in bioretention systems via the slow release of nutrients required for their growth. Also, the usage of biochar produced from solid waste discarded from urban areas in bioretention systems could indirectly contribute to solid waste management in urban areas.…”

Section: Role Of Biochar In Stormwater Treatmentmentioning

confidence: 99%

Biofilters and bioretention systems: the role of biochar in the blue-green city concept for stormwater management

Premarathna

Kumar

Varjani

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…The substrates for anaerobic digestion can originate from agriculture and agroindustry, [31][32][33][34] livestock, [35][36][37] lignocellulosic residues, [38][39][40] and urban waste. [41][42][43] The energy potential varies according to the raw material and the processing technology used. [44] The gas composition, resulting from biodigestion, is limited by operational process control because methane content is influenced by fermentation temperature, reactor loading, and hydraulic retention time.…”

Section: Biogas Characteristicsmentioning

confidence: 99%

Updates on biogas enrichment and purification methods: A review

et al. 2022

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The market for biogas production has been increasing every year all over the world. The use of biogas as an energy vector is accomplished through the most diverse applications, such as direct burning (thermal energy), internal combustion engines, and fuel cells. Besides direct applications, biogas can be used as a raw material for producing high added-value products, such as molecular hydrogen and renewable hydrocarbons, through a new enterprise concept, the biorefineries. Purity and quality control are determinant factors that enable the decision-making regarding the end use of biogas. Physical, chemical, and biological methods can be used in biogas upgrading processes as well as a combination of different techniques. This review aims to deepen the knowledge about relevant technologies for biogas purification. It also addresses the most efficient and feasible methods, challenges to be overcome, and main demands for future studies. Therefore, the presentation, in a detailed way, of the synergistic effects caused by components contained in natural biogas and the combinatorial methods for removing these contaminants, differentiates this from other works that approach only the purification techniques but do not point out their problems and causes more comprehensively. Thus, studies related to the combined effects of contaminants would be interesting in future works.

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Closing the circle for urban food waste anaerobic digestion: The use of digestate and biochar on plant growth in potting soil

Cited by 43 publications

References 91 publications

Nano‐biochar: Properties and prospects for sustainable agriculture

Nano‐biochar: Properties and prospects for sustainable agriculture

Biofilters and bioretention systems: the role of biochar in the blue-green city concept for stormwater management

Updates on biogas enrichment and purification methods: A review

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