The Fe3O4 nanoparticles-modified mycelium pellet-based anaerobic granular sludge enhanced anaerobic digestion of food waste with high salinity and organic load

Cui, Peiqi; Ge, Jiye; Chen, Yingyun; Zhao, Yilin; Wang, Shaojie; Su, Haijia

doi:10.1016/j.renene.2021.12.050

Cited by 17 publications

(3 citation statements)

References 76 publications

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“…Another later paper on granular sludge reported a magnetite nanoparticles-modified Aspergillus tubingensis mycelium pellet-based anaerobic granular sludge for AD food waste treatment. In this case, NPs stimulated extracellular polymeric substances (EPS), which protected the microbes from high osmotic pressure, resulting in higher methane yields than activated flocculent sludge [55]. Other papers go a step further and report the presence of magnetite NPs in digestate when used as fertilizer for lettuce crops, which also presented a higher presence of NPs in lettuce biomass (21.0-1,920%).…”

Section: Continuous Operationmentioning

confidence: 99%

Enhancement of Anaerobic Digestion with Nanomaterials: A Mini Review

et al. 2022

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In recent years, the number of articles reporting the addition of nanomaterials to enhance the process of anaerobic digestion has exponentially increased. The benefits of this addition can be observed from different aspects: an increase in biogas production, enrichment of methane in biogas, elimination of foaming problems, a more stable and robust operation, absence of inhibition problems, etc. In the literature, one of the current focuses of research on this topic is the mechanism responsible for this enhancement. In this sense, several hypotheses have been formulated, with the effect on the redox potential caused by nanoparticles probably being the most accepted, although supplementation with trace materials coming from nanomaterials and the changes in microbial populations have been also highlighted. The types of nanomaterials tested for the improvement of anaerobic digestion is today very diverse, although metallic and, especially, iron-based nanoparticles, are the most frequently used. In this paper, the abovementioned aspects are systematically reviewed. Another challenge that is treated is the lack of works reported in the continuous mode of operation, which hampers the commercial use of nanoparticles in full-scale anaerobic digesters.

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Section: Continuous Operationmentioning

confidence: 99%

Enhancement of Anaerobic Digestion with Nanomaterials: A Mini Review

et al. 2022

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“…121 It was demonstrated that addition of NBW enhanced the biological activity of enzymes involved in anaerobic digestion system and supplementation of K + balances the intracellular osmotic pressure of microorganisms and prevents the accumulation of Na + . Several other strategies, such as Fe 3 O 4 nanoparticle-modified Aspergillus tubingensis mycelium pellet-based anaerobic granular sludge (NPs@AT-AGS), 123 and iron-based biochar prepared at 700 °C (BC 700 ) can also be considered for anaerobic digestion of food waste to alleviate salt inhibition. 126 Compared with the addition of air-NBW, ammonium acetate, and KCl, the addition of glycine betaine afforded greater enhancement of methane yields (244% vs 24%, 13%, and 111%).…”

Section: Strategies For Mitigating or Utilizing The Impacts Of Food A...mentioning

confidence: 99%

Insights into the Occurrence, Fate, Impacts, and Control of Food Additives in Food Waste Anaerobic Digestion: A Review

Long

Liu

et al. 2023

Environ. Sci. Technol.

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The recovery of biomass energy from food waste through anaerobic digestion as an alternative to fossil energy is of great significance for the development of environmental sustainability and the circular economy. However, a substantial number of food additives (e.g., salt, allicin, capsaicin, allyl isothiocyanate, monosodium glutamate, and nonnutritive sweeteners) are present in food waste, and their interactions with anaerobic digestion might affect energy recovery, which is typically overlooked. This work describes the current understanding of the occurrence and fate of food additives in anaerobic digestion of food waste. The biotransformation pathways of food additives during anaerobic digestion are well discussed. In addition, important discoveries in the effects and underlying mechanisms of food additives on anaerobic digestion are reviewed. The results showed that most of the food additives had negative effects on anaerobic digestion by deactivating functional enzymes, thus inhibiting methane production. By reviewing the response of microbial communities to food additives, we can further improve our understanding of the impact of food additives on anaerobic digestion. Intriguingly, the possibility that food additives may promote the spread of antibiotic resistance genes, and thus threaten ecology and public health, is highlighted. Furthermore, strategies for mitigating the effects of food additives on anaerobic digestion are outlined in terms of optimal operation conditions, effectiveness, and reaction mechanisms, among which chemical methods have been widely used and are effective in promoting the degradation of food additives and increasing methane production. This review aims to advance our understanding of the fate and impact of food additives in anaerobic digestion and to spark novel research ideas for optimizing anaerobic digestion of organic solid waste.

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“…The benefit of the addition of NPs can also be a consequence of other NPs interactions such as the reduction of short-chain fatty acids accumulation, which in high amounts inhibits the AD process, organic matter overload, and the mitigation of H 2 S and ammonia, which ends up directly increasing CH 4 production (Hernández et al, 2011;Abdelwahab et al, 2020;Farghali et al, 2020;Cui et al, 2022;Ziganshina et al, 2022). Thus, the NPs could be potentially used to accelerate microbial activities in AD and optimize CH 4 production.…”

Section: Introductionmentioning

confidence: 99%

Nanotechnology boosts the production of clean energy via nanoparticle addition in anaerobic digestion

Castro,

Resende,

Taveira

et al. 2024

Front. Nanotechnol.

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Biogas production via anaerobic digestion is an established and robust technology that produces energy and recycles nutrients. Several biotechnological attempts have been applied to this process to increase biogas production, including adding nanoparticles, but several discrepancies have been reported. To elucidate the contradictory results, we performed a literature review followed by a meta-analysis to evaluate the effect of adding natural nanoparticles to biogas sludge. Our results showed that adding nanoparticles can increase biogas production by up to two orders of magnitude. Considering that, we attribute these results to variability in the nanoparticles applied, leading to less reliable, consistent, and even contradictory results. We observed that the magnetite nanoparticles are the most tested ones with the most promising positive effects. In addition, we observed that concentrations of nanoparticles higher than 100 mg/L can have adverse effects, with an overall decrease in biogas production. The findings in this study highlight the need for a proper characterization of the nanomaterials type and concentration applied to the process to understand the interactions and effects on the microbial communities and dynamics that lead to an overall increase or decrease in biogas yield.

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The Fe3O4 nanoparticles-modified mycelium pellet-based anaerobic granular sludge enhanced anaerobic digestion of food waste with high salinity and organic load

Cited by 17 publications

References 76 publications

Enhancement of Anaerobic Digestion with Nanomaterials: A Mini Review

Enhancement of Anaerobic Digestion with Nanomaterials: A Mini Review

Insights into the Occurrence, Fate, Impacts, and Control of Food Additives in Food Waste Anaerobic Digestion: A Review

Nanotechnology boosts the production of clean energy via nanoparticle addition in anaerobic digestion

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