Enhanced anaerobic digestion of food waste by thermal and ozonation pretreatment methods

Ariunbaatar, Javkhlan; Pánico, Antonio; Frunzo, Luigi; Esposito, Giovanni; Lens, Piet N.L.; Pirozzi, Francesco

doi:10.1016/j.jenvman.2014.07.042

Cited by 162 publications

(117 citation statements)

References 32 publications

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“…To reduce experimental bias, the substrate used for this research was synthetically generated based on an average compositional analysis of FW in the EU, as it was used in previous research (Ariunbaatar et al, 2014(Ariunbaatar et al, , 2015. It contained 79% fruits and vegetables, 5% pasta and rice, 6% bread and bakery, 8% meat and fish, 2% dairy product (Ariunbaatar et al, 2014(Ariunbaatar et al, , 2015. A fresh substrate was prepared for each set of experiment using food bought from local supermarkets in Delft, The Netherlands (Albert Heijn) and Tampa, USA (Walmart).…”

Section: Substrate and Inoculummentioning

confidence: 99%

“…The plant treats the buffalo dung together with the milk whey and sewage sludge generated from the mozzarella producing industry. It was used previously in studies of Ariunbaatar et al (2014Ariunbaatar et al ( , 2015 and Liotta et al (2015).…”

Section: Substrate and Inoculummentioning

confidence: 99%

“…At present the most common FW stabilization technology is still landfilling. Landfilling is strongly discouraged by legislations such as the EU Directives on Landfill (1999/31/EC) and the Waste Framework (2006/12/EC), as it utilizes huge land areas and contributes to further environmental impacts including soil and groundwater pollution, greenhouse gases emissions (Ariunbaatar et al, 2014). Besides the environmental issues associated with FW, it is worth mentioning that 250 km 3 of water and 28% of the world's agricultural area is used for the production of the 1.3 billion tons of FW (Parfit et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…It is thus important to recover and/or recycle waste to endorse responsible usage of natural resources. Therefore, anaerobic digestion (AD) of FW has become an important research field, as it couples waste stabilization to the production of energy as well as fertilizer (Zhang et al, 2011;Ariunbaatar et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Anaerobic Digestion of Food Waste by Supplementing Trace Elements: Role of Selenium (VI) and Iron (II)

Ariunbaatar

Esposito

Yeh

et al. 2016

Front. Environ. Sci.

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This paper discusses the potential to enhance the anaerobic digestion of food waste FW by supplementing trace elements (Fe, Co, Ni, Zn, Mn, Cu, Se, and Mo) individually as well as in cocktails. A series of batch experiments on the biomethane potential of synthetic food waste were performed with low (FW-A) and high (FW-B) trace element background concentrations prepared in, respectively, Delft (The Netherlands) and Tampa (Florida, USA). The most effective trace elements for FW-A were Fe with an increase of 39.2 (±0.6)% of biomethane production, followed by Se (34.1 ± 5.6% increase), Ni (26.4 ± 0.2% increase) and Co (23.8 ± 0.2% increase). For FW-B supplementing these trace elements did not result in enhancement of the biomethane production, except for Se. FW-B had a Se concentration of 1.3 (±0. 5) µ g/gTS, while it was below the detection limit for FW-A. Regardless of the FW source, Se resulted in 30-35% increase of biomethane production at a concentration range of 25-50 µg/L (0.32-0.63 µM). Volatile fatty acids analysis revealed that TE supplementation enhances their consumption, thus yielding a higher biomethane production. Moreover, additional experiments on sulfide inhibition showed the enhancing effects of trace elements on the anaerobic digestion of food waste were not related with sulfide toxicity, but with the enzymatic reactions and/or microbial biomass aggregation.

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Section: Substrate and Inoculummentioning

confidence: 99%

Section: Substrate and Inoculummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced Anaerobic Digestion of Food Waste by Supplementing Trace Elements: Role of Selenium (VI) and Iron (II)

Ariunbaatar

Esposito

Yeh

et al. 2016

Front. Environ. Sci.

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“…This role is actually played by methanogenesis, where are active methanogenic archaea that, among all microorganisms involved in AD process, show the slowest growth rate and are the most sensitive to environmental condition changes. When this condition occurs, all those pretreatments (thermal, chemical and physical) usually set prior AD process to accelerate the hydrolysis [18] represent unnecessary costs [19] to be avoided. This aspect, if adequately taken into account, can actually result in being very useful to save money, as well as implement reliable mathematical models used for designing new AD reactors or monitoring the efficiency of those already in service [20,21].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Substrate-Bulk Interaction on Hydrolysis Modeling in Anaerobic Digestion Process

et al. 2014

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Abstract:In an Anaerobic Digestion (AD) process treating particulate substrates, the size of solids is expected to negatively affect the rate of hydrolysis step and consequently influence the performance of the whole process. To avoid any disadvantage due to size of solids, expensive pre-treatments aimed at disintegrating and solubilizing substrates are commonly conducted prior to AD. This practice is doubtlessly successful, but not always necessary, since some organic substrates, although particulate, once immersed in water, tend to solubilize immediately. This aspect, if properly considered, could result in saving money and time in the AD process, as well as refining the development and calibration of AD mathematical models. The present study is actually aimed at demonstrating, through experiments and mathematical simulations, different results deriving from the AD process performed, under the same operating conditions, on two different substrates, i.e. homemade pasta and carrot batons, having the same particle size, but different chemical composition OPEN ACCESSSustainability 2014, 6 8349 and texture. Experimental outcomes highlighted the effect of particles size on bio-methane production only from the bio-methanation potential tests (BMP) conducted on carrot batons. Similar results were obtained by mathematical model calibration, i.e., different kinetic constants for differently-sized carrot batons and same kinetic constant for differently-sized homemade pasta solids.

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Anaerobic Digestion

Grosser

Neczaj

2022

Biodegradable Waste Management in the Circular Economy

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Enhanced anaerobic digestion of food waste by thermal and ozonation pretreatment methods

Cited by 162 publications

References 32 publications

Enhanced Anaerobic Digestion of Food Waste by Supplementing Trace Elements: Role of Selenium (VI) and Iron (II)

Enhanced Anaerobic Digestion of Food Waste by Supplementing Trace Elements: Role of Selenium (VI) and Iron (II)

The Effect of Substrate-Bulk Interaction on Hydrolysis Modeling in Anaerobic Digestion Process

Anaerobic Digestion

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