Enhanced biogas production from food waste and activated sludge using advanced techniques – A review

Deena, Santhana Raj; Vickram, Sundaram; Manikandan, S.; Subbaiya, Ramasamy; Karmegam, Natchimuthu; Ravindran, Balasubramani; Chang, Soon Woong; Awasthi, Mukesh Kumar

doi:10.1016/j.biortech.2022.127234

Cited by 83 publications

(26 citation statements)

References 138 publications

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“…The unpackaging activity results in an organic slurry that can contain small amounts of plastics of various sizes. Due to its high organic content, this slurry is suitable for the production of biogas, while its residue can be utilised as organic fertiliser 9,11 . Besides the use of food waste streams as biogas precursors, food waste can also be applied as rearing substrates for BSF larvae, which can in turn be used as a valuable ingredient in compound feed (preparing for re-use).…”

mentioning

confidence: 99%

Ingestion and excretion dynamics of microplastics by black soldier fly larvae and correlation with mouth opening size

Lievens

Vervoort

Bruno

et al. 2023

Sci Rep

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Black soldier fly (BSF) larvae (Hermetia illucens) are voracious feeders that can be reared on food waste streams originating from the food industry and retailers. Because these food waste streams are automatically being unpacked in substantial amounts, they can contain microplastics, potentially jeopardising the larvae’s chemical safety when applied as compound feed ingredients. During this study, the dynamics of ingestion and excretion of microplastics by BSF larvae reared on substrates containing different contents (wMP = 0.00, 0.01, 0.10, 0.50, 1.00, 3.00%) of fluorescent blue-labelled microplastics (median size, Dv(50) = 61.5 µm) were monitored. To correlate the particle size with their uptake, larval mouth opening dimensions were measured during the rearing process. In conclusion, it appeared that ingestion of microplastics by BSF larvae depends on initial particle load, mouth size, and consequently also age. The larvae took up between 131 (wMP = 0.01%) and 4866 (wMP = 3.00%) particles leading to bioaccumulation factors (BAF) between 0.12 (wMP = 3.00%) and 1.07 (wMP = 0.01%). Larvae also appeared to excrete the microplastics, lowering the BAFs to values between 0.01 (wMP = 3.00%) and 0.54 (wMP = 0.01%).

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mentioning

confidence: 99%

Ingestion and excretion dynamics of microplastics by black soldier fly larvae and correlation with mouth opening size

Lievens

Vervoort

Bruno

et al. 2023

Sci Rep

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“…The majority of enzymes present in anaerobic digestion are metalloenzymes, and these enzymes need the existence of metals as co‐enzymes or co‐factors. Particularly, nearly all metalloenzymes that are in the biogas generation pathway have several agglomerates that comprise iron; iron is extremely essential for cytochromes and biogas generation [31–33] . Adding magnetite‐nanoparticles in the MFC digester promotes biogas generation by raising the peak of the biogas generation and increasing the activities of metalloenzymes [34] .…”

Section: Resultsmentioning

confidence: 99%

“…Particularly, nearly all metalloenzymes that are in the biogas generation pathway have several agglomerates that comprise iron; iron is extremely essential for cytochromes and biogas generation. [31][32][33] Adding magnetite-nanoparticles in the MFC digester promotes biogas generation by raising the peak of the biogas generation and increasing the activities of metalloenzymes. [34] This is why the MFCM digester performed better than the MFC.…”

Section: Biogas Accumulation and Daily Biogas Generationmentioning

confidence: 99%

Application of Magnetite‐nanoparticles and Static Magnetic Field on a Microbial Fuel Cell in Anaerobic Digestion

Madondo

Rathilal

Bakare

et al. 2023

Chemistry An Asian Journal

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The selectivity of catalytic materials suitable for oxygen reduction potential of bio-electrochemical systems is very affluent. Therefore, exploring magnetite and static magnetic field as alternative option to promote microbial electron transfer comes in handy. In this study, the application of magnetite-nanoparticles and a static magnetic field on a microbial fuel cell (MFC) in anaerobic digestion was investigated. The experimental set-up included four 1 L biochemical methane potential tests: a) MFC, b) MFC with magnetite-nanoparticles (MFCM), c) MFC with magnetitenanoparticles and magnet (MFCMM), and d) control. The highest biogas production obtained was 545.2 mL/g VS fed in the MFCMM digester, which was substantially greater than the 117.7 mL/g VS fed of the control. This was accompanied by high contaminant removals for chemical oxygen demand (COD) of 97.3%, total solids (TS) of 97.4%, total suspended solids (TSS) of 88.7%, volatile solids (VS) 96.1%, and color of 70.2%. The electrochemical efficiency analysis revealed greater maximum current density of 12.5 mA/m 2 and coulombic efficiency of 94.4% for the MFCMM. Kinetically, the cumulative biogas produced data obtained were well fitted on the modified Gompertz models and the greatest coefficient of determination (R 2 = 0.990) was obtained in the MFCMM. Therefore, the application of magnetite-nanoparticles and static magnetic field on MFC showed a high potential for bioelectrochemical methane production and contaminant removal for sewage sludge.

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“…The obtained results align with similar studies. 13,19,20,24,25 From Figure 4b, CO emissions at 30% EGR rate for FCWME10D90, FCWME20D80, diesel and FCWME30D70 was 0.1%, 0.99%, 0.102%, 0.085%, correspondingly at maximum load. With EGR, there is an increase in inert gas of air/fuel mixtures which lowers the CO oxidation of test fuels.…”

Section: Co Emissionsmentioning

confidence: 98%

“…The results align with similar studies. 13,[23][24][25] BSFC at 30% EGR rate for FCWME10D90 (0.19 kg/kWh), diesel (0.18 kg/kWh), FCWME20D80 (0.21 kg/kWh) and FCWME30D70 (0.22 kg/kWh), at maximum load. Figure 3b shows that the BSFC increases with EGR for all fuels.…”

Section: Brake-specific Fuel Consumptionmentioning

confidence: 99%

Detailed studies on employing fish canning waste as a partial alternative in a research diesel engine: Waste to energy initiation

Devarajan

Munuswamy²,

Ganesan

et al. 2023

Env Prog and Sustain Energy

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This research aims to utilize the energy available from fish canning waste (FCW) as a partial alternative. The fuel is chemically modified to fish canning waste methyl ester (FCWME) by acid‐catalytic transesterification process and blended with diesel at 10%, 20% and 30% volume. The engine utilized in this study is slightly modified by engaging exhaust gas recirculation (EGR) to lower the nitrous oxide (NO) emission of oxygen‐rich fuel blends. Performance tests demonstrated that the FCW/diesel blends show similar patterns to diesel. Higher fuel consumption of 0.01, 0.03 and 0.04 kg/kWh was noted by including FCWME by 10%, 20% and 30% by volume. Power losses of about 1.4%, 1.9% and 2.1% were experienced by blending 10%, 20% and 30% volumes of FCWME with diesel. Conversely, the tailpipe emissions, namely smoke, CO and HC emissions, lowered by 3.7%, 0.017% and 21 ppm, with 117 ppm elevated NO emissions for the FCWME/diesel blends than diesel. The test results revealed that the NO emissions from all test fuels lowered drastically during 10%–30% EGR; 91 ppm reduction in NO emissions was observed at a 30% EGR rate, with a slight increase in other regulated emissions. Considering the encouraging impacts on the environment and improved fuel combustion pattern, FCW biofuel shall be employed as a likely and fractional alternative to diesel fuel.

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Enhanced biogas production from food waste and activated sludge using advanced techniques – A review

Cited by 83 publications

References 138 publications

Ingestion and excretion dynamics of microplastics by black soldier fly larvae and correlation with mouth opening size

Ingestion and excretion dynamics of microplastics by black soldier fly larvae and correlation with mouth opening size

Application of Magnetite‐nanoparticles and Static Magnetic Field on a Microbial Fuel Cell in Anaerobic Digestion

Detailed studies on employing fish canning waste as a partial alternative in a research diesel engine: Waste to energy initiation

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