Modeling and system identification of an unconventional bioreactor used for single cell protein production

Petersen, Leander A. H.; Bequette, B. Wayne; Jørgensen, Sten Bay; Christensen, Ib; Gernaey, Krist V.

doi:10.1016/j.cej.2020.124438

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…The U-loop reactor is a multi-phase forced circulation tubular reactor where gases are pumped along with liquids. Static mixers are strategically placed at multiple locations along the loop to redisperse the gas and enhance interphase contact (Petersen et al, 2020). The U-loop reactor effectively meets the process demand for a substantial volumetric gas fraction (Petersen et al, 2017).…”

Section: Bioreactormentioning

confidence: 99%

Methanotroph biotransformation for nutrient recovery: a review of current strategies and future opportunities

Zheng,

Liu,

Khademi

et al. 2024

Biofuel Res. J.

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The escalating global demand for protein and the imperative to meet sustainable development goals have driven the emergence of biotransformation platforms, with methanotrophs showing significant potential in this field. In this paper, the metabolism, nutritional requirements, cultivation strategies, and bioreactors of methanotrophs are reviewed. Integrating upstream and downstream technologies is also advocated to advance the development of methanotroph biotransformation platforms toward a circular economy model. The advancements in utilizing biogas as a viable carbon source and wastewater as a nitrogen source are discussed, emphasizing the need for detailed quality control and safety assessments to ensure the suitability of single-cell protein as animal feed. In general, by integrating advanced nutrient recovery technologies to define new process routes, methanotroph biotransformation platforms can bring better environmental benefits by reducing carbon emissions and saving resources. Shifting to renewable energy is crucial for achieving environmental sustainability. By using renewable energy to power microbial fermentation, biomass dehydration, and waste recycling, the platform can offset high energy consumption and attain significant market competitiveness with traditional protein sources.

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Section: Bioreactormentioning

confidence: 99%

Methanotroph biotransformation for nutrient recovery: a review of current strategies and future opportunities

Zheng,

Liu,

Khademi

et al. 2024

Biofuel Res. J.

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“…Microbial growth in the bioreactor begins to experience a decline in population and enters a slow growth phase. This is because the amount of nutrients in batch fermentation is decreasing and there is an accumulation of toxic waste products, causing most of the microorganisms to die (Petersen et al, 2020).…”

Section: The Effect Of Variation In Fermentation Time On Yeast Growthmentioning

confidence: 99%

“…Carbon is derived from a variety of organic waste leftovers from indigenous crops, such as banana peel waste. Because banana peel waste is rich in nutrients, it is an excellent source of substrate for SCP synthesis (Petersen et al, 2020). As far as we know, there have been relatively few studies and research on the synthesis of microbial protein utilizing local fruits as a low-cost protein source (Zhou et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Production of Single Cell Protein from Banana Peel Waste in Batch Fermentation Using Saccharomyces Cerevisiae

Azwar¹,

Mukhlishien

Muslim

et al. 2021

JBAT

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Through engineering the fermentation process, it is hoped that new data can be obtained that will explain the ability of Saccharomyces cerevisiae to maximize the production of single-cell protein (SCP). SCP microorganisms have a high protein content, making them suitable for use as a human protein source as well as food additives in the cattle and fishing industries. The goal of this experiment is to see if the microbe Saccharomyces cerevisiae can generate SCP from banana peel waste. Some of the process variables used in this study include the variation in nutrition, fermentation time, and the effect of pH variations on SCP production. Where the variation in pH used is 3; 3.5; 4; 4.5; 5; and 5.5. As for the nutrients used, namely (NH4)2SO4 and KH2PO4 with a variety of nutrients, namely 0; 0.3; 0.6; 0.9; and 1.2 grams. Then the fermentation time was varied to 1,2,3,4 days. This study also analyzed the growth of microorganism cells using wet weight and dry weight with variations in pH and nutrition. The variation in nutrition is the same as the variation in the previous analysis of protein content, and the fermentation time is 1,2,3,4,5,6, and 7. In the analysis of protein content with Kjeldahl protein, the obtained optimal pH is 4.5 and the optimal protein content is 0.6 grams. As for the fermentation time, the optimal protein content is obtained on the 4th day. For the growth of microorganisms, the optimal pH is obtained at a pH value of 4.5 with optimal nutrition of 0.6 grams, and the optimal fermentation time is obtained on the 7th day.

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“…To the authors' best knowledge, this paper is the first paper describing a control strategy for methane bioconversion processes in conventional bioreactors. Petersen et al [41] present a modelling approach for a U-shaped bioreactor for a methane bioconversion process to produce single cell proteins (SCP), coupled to an observability and controllabilty analysis, without discussing actual observer and controller designs.…”

Section: Introductionmentioning

confidence: 99%

Observer and controller design for a methane bioconversion process

Becker

Michiels

Knoors

et al. 2021

European Journal of Control

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Modeling and system identification of an unconventional bioreactor used for single cell protein production

Cited by 6 publications

References 16 publications

Methanotroph biotransformation for nutrient recovery: a review of current strategies and future opportunities

Methanotroph biotransformation for nutrient recovery: a review of current strategies and future opportunities

Production of Single Cell Protein from Banana Peel Waste in Batch Fermentation Using Saccharomyces Cerevisiae

Observer and controller design for a methane bioconversion process

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