Embracing a low-carbon future by the production and marketing of C1 gas protein

Xu, Jian; Wang, Jie; Ma, Chunling; Wei, Zuoxi; Zhai, Yida; Tian, Na; Zhu, Zhiguang; Xue, Mei; Li, Demao

doi:10.1016/j.biotechadv.2023.108096

Cited by 15 publications

(7 citation statements)

References 207 publications

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“…As shown in Figure a, the sprayed oil–water microdroplets can provide in situ hydrogen species during the atomization process, enabling the hydrogenation of CO 2 . By this means, oil spills and domestic wastewater can be upcycled as sources of reactive hydrogen species to provide fuels and chemicals …”

Section: Resultsmentioning

confidence: 99%

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Sprayed Oil–Water Microdroplets as a Hydrogen Source

Chen,

Xia,

et al. 2024

J. Am. Chem. Soc.

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Liquid water provides the largest hydrogen reservoir on the earth's surface. Direct utilization of water as a source of hydrogen atoms and molecules is fundamental to the evolution of the ecosystem and industry. However, liquid water is an unfavorable electron donor for forming these hydrogen species owing to its redox inertness. We report oil-mediated electron extraction from water microdroplets, which is easily achieved by ultrasonically spraying an oil−water emulsion. Based on charge measurement and electron paramagnetic resonance spectroscopy, contact electrification between oil and a water microdroplet is demonstrated to be the origin of electron extraction from water molecules. This contact electrification results in enhanced charge separation and subsequent mutual neutralization, which enables a ∼13-fold increase of charge carriers in comparison with an ultrapure water spray, leading to a ∼16-fold increase of spray-sourced hydrogen that can hydrogenate CO 2 to selectively produce CO. These findings emphasize the potential of charge separation enabled by spraying an emulsion of liquid water and a hydrophobic liquid in driving hydrogenation reactions.

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Section: Resultsmentioning

confidence: 99%

“…By this means, oil spills and domestic wastewater can be upcycled as sources of reactive hydrogen species to provide fuels and chemicals. 48 ■ CONCLUSIONS…”

Section: Charge Measurement Of Microdroplets and Thementioning

confidence: 99%

Sprayed Oil–Water Microdroplets as a Hydrogen Source

Chen,

Xia,

et al. 2024

J. Am. Chem. Soc.

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“…Existing or planned production facilities target 20–40,000 tons of protein‐rich commodities per year based on 100–250 m 3 bioreactors, of the same magnitude as the current established fungi‐producing Quorn facility (Banks et al., 2022 ). Overall, the diversity and frequency of food‐related axenic microbial biotech patents are ever‐increasing (Nyyssölä et al., 2022 ), with technologies relying on gas fermentation largely put forward (Woern & Grossmann, 2023 ; Xu et al., 2023 ). On the other hand, symbiotic open fermentation, albeit with a longer culinary tradition, demonstrated feasibility at any scale and with at least as much innovation potential, is still largely underrepresented in microbial biotech investments and development directions (Specht & Crosser, 2020 ).…”

Section: Microbial Biotech and Proteins: Quid Hocmentioning

confidence: 99%

Ruminations on sustainable and safe food: Championing for open symbiotic cultures ensuring resource efficiency, eco‐sustainability and affordability

Javourez,

Matassa,

Vlaeminck

et al. 2024

Microbial Biotechnology

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Microbes are powerful upgraders, able to convert simple substrates to nutritional metabolites at rates and yields surpassing those of higher organisms by a factor of 2 to 10. A summary table highlights the superior efficiencies of a whole array of microbes compared to conventionally farmed animals and insects, converting nitrogen and organics to food and feed. Aiming at the most resource‐efficient class of microbial proteins, deploying the power of open microbial communities, coined here as ‘symbiotic microbiomes’ is promising. For instance, a production train of interest is to develop rumen‐inspired technologies to upgrade fibre‐rich substrates, increasingly available as residues from emerging bioeconomy initiatives. Such advancements offer promising perspectives, as currently only 5%–25% of the available cellulose is recovered by ruminant livestock systems. While safely producing food and feed with open cultures has a long‐standing tradition, novel symbiotic fermentation routes are currently facing much higher market entrance barriers compared to axenic fermentation. Our global society is at a pivotal juncture, requiring a shift towards food production systems that not only embrace the environmental and economic sustainability but also uphold ethical standards. In this context, we propose to re‐examine the place of spontaneous or natural microbial consortia for safe future food and feed biotech developments, and advocate for intelligent regulatory practices. We stress that reconsidering symbiotic microbiomes is key to achieve sustainable development goals and defend the need for microbial biotechnology literacy education.

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“…We also note that, in addition to pure fundamental research interest, the task of assessing the mass transfer coefficient in bioreactors using the latest modern methods is also of high practical importance, since the cost of the final products directly depends on exactly the efficiency of bioreactor operation [24][25][26]: the cost of electricity can reach up to 25% of bioprotein total cost, while the mass transfer coefficient k L determines the maximum achievable concentration of microorganisms, set by the limit of dissolved gases, and therefore determines the productivity of the process.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Mass Transfer Coefficient in Jet Bioreactors with Classical Computer Vision Methods and Neural Networks Algorithms

et al. 2023

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Development of energy-efficient and high-performance bioreactors requires progress in methods for assessing the key parameters of the biosynthesis process. With a wide variety of approaches and methods for determining the phase contact area in gas–liquid flows, the question of obtaining its accurate quantitative estimation remains open. Particularly challenging are the issues of getting information about the mass transfer coefficients instantly, as well as the development of predictive capabilities for the implementation of effective flow control in continuous fermentation both on the laboratory and industrial scales. Motivated by the opportunity to explore the possibility of applying classical and non-classical computer vision methods to the results of high-precision video records of bubble flows obtained during the experiment in the bioreactor vessel, we obtained a number of results presented in the paper. Characteristics of the bioreactor’s bubble flow were estimated first by classical computer vision (CCV) methods including an elliptic regression approach for single bubble boundaries selection and clustering, image transformation through a set of filters and developing an algorithm for separation of the overlapping bubbles. The application of the developed method for the entire video filming makes it possible to obtain parameter distributions and set dropout thresholds in order to obtain better estimates due to averaging. The developed CCV methodology was also tested and verified on a collected and labeled manual dataset. An onwards deep neural network (NN) approach was also applied, for instance the segmentation task, and has demonstrated certain advantages in terms of high segmentation resolution, while the classical one tends to be more speedy. Thus, in the current manuscript both advantages and disadvantages of the classical computer vision method (CCV) and neural network approach (NN) are discussed based on evaluation of bubbles’ number and their area defined. An approach to mass transfer coefficient estimation methodology in virtue of obtained results is also represented.

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Embracing a low-carbon future by the production and marketing of C1 gas protein

Cited by 15 publications

References 207 publications

Sprayed Oil–Water Microdroplets as a Hydrogen Source

Sprayed Oil–Water Microdroplets as a Hydrogen Source

Ruminations on sustainable and safe food: Championing for open symbiotic cultures ensuring resource efficiency, eco‐sustainability and affordability

Assessing the Mass Transfer Coefficient in Jet Bioreactors with Classical Computer Vision Methods and Neural Networks Algorithms

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