Impact of adding metal nanoparticles on anaerobic digestion performance – A review

Lee, Yu–Jen; Lee, Dong Hoon

doi:10.1016/j.biortech.2019.121926

Cited by 71 publications

(19 citation statements)

References 113 publications

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“…The Fe (III) reduction reaction is a favorable process to directly oxidize organics into simple compounds (Romero-Güiza et al, 2016), increasing the consumption of OA, and eliminate compounds that may be toxic to the process, by stimulating microbial growth, synthesis of necessary enzymes within the oxidation-reduction reactions and consequently greater efficiency in the digestion of organic matter (Choong et al, 2016; Lee and Lee, 2019). The positive effect of Fe (III) supplementation was attributed to the favorable redox conditions, which all evited the thermodynamic limitations on organic acid degradation.…”

Section: Resultsmentioning

confidence: 99%

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Volpi

Mockaitis

Bruant

et al. 2022

Preprint

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The co-digestion of residues from the sugarcane industry has already proven to be a highly attractive process for biogas production through anaerobic digestion (AD). The use of residues such as vinasse (1G) filter cake (1G) and deacetylation liquor (2G) in operation in a continuous CSTR reactor showed a possibility of integration of 1G and 2G ethanol biorefineries through AD in previous work by our research group. The use of nanoparticles (NP) is a favorable way to optimize AD processes, as these additives serve as a means of introducing nutrients into the process in a more assertive way from the point of view of distribution and interaction with microorganisms. In this context, the present work proposed the optimization of the co-digestion of vinasse, filter cake, and deacetylation liquor in a continuous reactor through the addition of Fe3O4 NP, by the purpose of comparison results with the operation of the same substrates and the same condition but without NP. Initially, tests were carried out in batches with different concentrations of NPs, to evaluate the best concentration to be added in the continuous reactor. A concentration of 5 mg L-1 was chosen, and it was added to each increase in organic rate load (ORL) used in the process. CH4 production reached maximum values of 2.8 ± 0.1 NLCH4 gVS-1 and organic matter removal 71 ± 0.9%, in phase VI, with ORL of 5.5 gVS L-1 day-1. This production was 90% higher than the reactor co-digestion operation without the presence of NP. Furthermore, according to the results of pH, alkalinity, it can be concluded that the methanogenesis stabilized at 60 days of operation, being 30 days before when there was no NP added. The development of AD was stable, with low variations in the oxidation-reduction potential (ORP) and with stable organic acid (OA) concentrations, indicating the possibility of route propionic acid to produce CH4. The main methanogenic Archeae found was Methanoculleus, indicating that the predominant metabolic route was that of syntrophic acetate oxidation (SAO) coupled with hydrogenotrophic methanogenesis. The use of Fe3O4 NP managed to improve the AD operation of residues from the 1G2G ethanol production industry and did not modify the microbial community present, only stimulated their growth.

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Section: Resultsmentioning

confidence: 99%

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Volpi

Mockaitis

Bruant

et al. 2022

Preprint

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“…Addition of NPs also changes the structure of a microbial community and the counts of prevalent microorganisms in reactors, which improves the efficiency of the system and methanogenesis. Furthermore, NPs can stimulate the efficiency of bioreactors by acting as electron donors or acceptors as well as cofactors of various enzymes . Kaushal and Baitha studied the impact of graphene oxide NPs on intensification of biogas and methane production in the AD of Ca(OH) 2 suspension mixed with wheat straw.…”

Section: Feedstocks Technologies and Factors Design To Intensify Bimentioning

confidence: 99%

“…The conditions needed for the growth and development of these two groups are quite different, which is why these microorganisms need different technological and environmental conditions to be maintained during the methane fermentation process. Striving to achieve the highest possible efficiency of the AD process, a two‐stage methane fermentation, known as the two‐stage AD (TSAD) technology has been developed . The TSAD system is controlled by a number of factors, such as the type of inoculum, working temperature, and pH, time of hydraulic retention and organic loading rate (OLR).…”

Section: Feedstocks Technologies and Factors Design To Intensify Bimentioning

confidence: 99%

“…Furthermore, NPs can stimulate the efficiency of bioreactors by acting as electron donors or acceptors as well as cofactors of various enzymes. 132 Kaushal and Baitha 129 studied the impact of graphene oxide NPs on intensification of biogas and methane production in the AD of Ca(OH) 2 suspension mixed with wheat straw. They observed that the application of NPs doubled the volume of methane relative to the control sample.…”

Section: Effect Of Nps In Biogas Productionmentioning

confidence: 99%

“…Striving to achieve the highest possible efficiency of the AD process, a two-stage methane fermentation, known as the twostage AD (TSAD) technology has been developed. 132 The TSAD system is controlled by a number of factors, such as the type of inoculum, working temperature, and pH, time of hydraulic retention and organic loading rate (OLR). The TSAD process makes it possible to separate such stages as hydrolysis and acidogenesis from the stage of methanogenesis.…”

Section: Intensification Of Biogas Production In a Two-stage Reactormentioning

confidence: 99%

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Intensification of biogas production using various technologies: A review

et al. 2020

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Summary Anaerobic digestion (AD) is an organic matter conversion technology which offers a wide range of options for production of biogas from organic biomass, providing an excellent opportunity to convert abundant bioresources into safe, eco‐friendly, renewable energy. Important factors in the process of AD are the biodiversity of microorganisms, chemical load of oxygen demand, and content of water and total solids. A challenge for the future is to find technologies that will maximally enhance biogas production and to find pathways for biogas to supersede well‐established technologies and practices in the contemporary heavily fossil fuel‐based energy system. Current studies on technologies of biogas production indicate a number of possibilities of using appropriate biological and physicochemical additives, like added enzymes or fruit pomace, as well as immobilizing microorganisms on biofilters. Anaerobic biorefinery is an emerging concept that generates not only bioenergy but also high‐value biochemical products from the same feedstock. This study is a review of articles describing the intensification of biogas production by using various technologies.

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Solid State Anaerobic Digestion of Agricultural Waste for Bioenergy Production

Paritosh

Singh

Kesharwani

et al. 2022

Applied Environmental Science and Engineering for a Sustainable Future

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Impact of adding metal nanoparticles on anaerobic digestion performance – A review

Cited by 71 publications

References 113 publications

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Intensification of biogas production using various technologies: A review

Solid State Anaerobic Digestion of Agricultural Waste for Bioenergy Production

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Impact of adding metal nanoparticles on anaerobic digestion performance – A review

Cited by 71 publications

References 113 publications

Fe3O4nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Fe3O4nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Intensification of biogas production using various technologies: A review

Solid State Anaerobic Digestion of Agricultural Waste for Bioenergy Production

Contact Info

Product

Resources

About

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes