Implementation and long term experiences with a continuous hygienisation process in food industry – A case study

Wöss, David; Ortner, Markus; Mensik, J.; Kirchmayr, R.; Schumergruber, Alexander; Pröll, Tobias

doi:10.1016/j.cep.2019.02.007

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…The benefits of a continuous system are lower operation costs, including energy, personal, and investment costs. Additionally, less components like a cooling tank, air scrubber, and various pumps are required (Wöss et al, 2019). It has to be stated that this pretreatment does not have any influence on the final biogas yield but enhances the degradation speed.…”

Section: Pretreatment Of Feedstock From Slaughterhousesmentioning

confidence: 99%

Anaerobic Digestion of Pretreated Industrial Residues and Their Energetic Process Integration

Bochmann

Pesta

Rachbauer

et al. 2020

Front. Bioeng. Biotechnol.

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The food and beverage industry offers a wide range of organic feedstocks for use in biogas production by means of anaerobic digestion (AD). Microorganisms convert organic compounds-solid, pasty, or liquid ones-within four steps to biogas mainly consisting of CH 4 and CO 2. Therefore, various conversion technologies are available with several examples worldwide to show for the successful implementation of biogas technologies on site. The food and beverage industry offer a huge potential for biogas technologies due to the sheer amount of process residues and their concurrent requirement for heat and power. The following study analyzes specific industries with respect to their implementation potential based on arising waste and heat and power demand. Due to their chemical composition, several feedstocks are resistant against microbiological degradation to a great extent. A combination of physical-, chemical-, and microbiological pretreatment are used to increase the biological availability of the feedstock. The following examples will discuss how to best implement AD technology in industrial processes. The brewery industry, dairy production, slaughterhouses, and sugar industry will serve as examples.

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Section: Pretreatment Of Feedstock From Slaughterhousesmentioning

confidence: 99%

Anaerobic Digestion of Pretreated Industrial Residues and Their Energetic Process Integration

Bochmann

Pesta

Rachbauer

et al. 2020

Front. Bioeng. Biotechnol.

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show abstract

“…All of these processes require a relatively high energy input but ensure that neither pathogens nor live larvae are released into the environment. Another technology that is used for waste biomass treatment and has a proven sanitization effect is the biogas process [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Biogas Production from Residues of Industrial Insect Protein Production from Black Soldier Fly Larvae Hermetia illucens (L.): An Evaluation of Different Insect Frass Samples

2023

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Insect biomass shows promise as an alternative animal feedstuff with a low climate effect. Industrial insect rearing generates residual materials, such as feed remains and insect excrements, so-called insect frass, which exhibits a high organic content. Commonly, these residues are utilized as soil amendment. Information on the suitability of these residues for biogas production is rather scarce. The energetic utilization of insect frass as feedstock for anaerobic digestion (AD) would allow for the simultaneous residue material reduction and bioenergy production. Additionally, synergies in heat management could arise using the exhaust heat of the biogas plant in the insect farming process. In laboratory-scale anaerobic digestion trials, the specific methane yield (SMY) of six different insect frass samples from black soldier fly (Hermetia) rearing were tested in batch biochemical methane potential (BMP) tests. Further, semi continuous anaerobic digestion trials on a lab scale using continuously stirred tank reactors (CSTRs) were carried out with Hermetia insect frass from a pilot plant operation in order to determine the digestibility and process stability of the AD process. The BMP results showed SMY values of the different insect frass samples ranging from 201 ± 9 to 287 ± 37 mL/gVS that are similar to those of other animal excrements, such as cow or pig manure already been used as feedstock in agricultural biogas plants. Results of the semi-continuous digestion of insect frass from the pilot plant operation showed a SMY value of 167 ± 15 mL/gVS, suggesting no process-inhibiting effect caused by the feed material. Although, the high nitrogen content must be taken into account for stable AD performance.

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Mechanical Pretreatment of Various Types of Biomass from Animals: What Potential Applications to Anaerobic Digestion?

et al. 2022

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Implementation and long term experiences with a continuous hygienisation process in food industry – A case study

Cited by 3 publications

References 16 publications

Anaerobic Digestion of Pretreated Industrial Residues and Their Energetic Process Integration

Anaerobic Digestion of Pretreated Industrial Residues and Their Energetic Process Integration

Biogas Production from Residues of Industrial Insect Protein Production from Black Soldier Fly Larvae Hermetia illucens (L.): An Evaluation of Different Insect Frass Samples

Mechanical Pretreatment of Various Types of Biomass from Animals: What Potential Applications to Anaerobic Digestion?

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