anaerobic fermentation of

Modeling the Disintegration Process in Anaerobic …

2017-6-28 · Mathematical modeling of anaerobic digestion (AD) is widely acknowledged as a powerful tool to v of the process and to support full-scale plant design, operation and optimization. In this work, a modified version of the IWA …

Sorghum Stalk Juice Pre-treatment Method for …

2017-1-16 · anaerobic fermentation needs to be evaluated. Process adopted for this research was method at 80 oC followed by addition of phosphoric acid. method reduces juice turbidity to 82.43 % ± 0.50 % and gives specific growth rate (P of inoculated yeast of 0.38 h –1 (aerobic) and 0.17 h (anaerobic). Other method evaluated was by ...

Characterization and fermentation of side streams from ...

2014-8-1 · The fermentation of the side streams resulted in lower yields and productivity than fermentation in a defined medium. Furthermore, the fermentability of the side streams was improved after over-, evaporation, and laccase treatment. Over- was the most efficient means of detoxifying the side-streams, resulting in better fermentability.

Sorghum Stalk Juice Pre-treatment Method for Bioethanol ...

Protein hydrolysis and fermentation under methanogenic and ...

What is Anaerobic Digestion

Anaerobic digestion (AD) is a biological process in which micro-organisms break down organic materials in the absence of oxygen and form an energy-rich biogas. In the "wet" version of AD, pumpable organic feedstocks (such as food …

Reconsideration of anaerobic fermentation from excess ...

Volatile fatty acids'' (VFA) production from excess sludges during the initial stage (133 h) in the fermentation processes and the disposal risk of sludge were investigated under the real time controlled condition of pH at 5.5 and 10.0. The results showed that the total VFA production at pH 10.0 was markedly higher than that at pH 5.5. Anaerobic fermentation at pH 10.0 was the first …

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An orthogonal experiment on seed straw anaerobic fermentation was carried out. The effects of batch conditions,such as pretreatment conditions,liquid concentrations,and inoculum amounts on fermentation were studied under both dry and wet conditions.

Functional genome-centric view of the CO-driven …

2021-4-28 · Exploit carbon materials to accelerate initiation and enhance process stability of CO anaerobic open-culture fermentation. ACS Sustain Chem …

Metabolic engineering for improved fermentation of ...

2003-11-1 · The fermentation of xylose is essential for the bioconversion of lignocellulose to fuels and chemicals, but wild-type strains of Saccharomyces cerevisiae do not metabolize xylose, so researchers have engineered xylose metabolism in this yeast. Glucose transporters mediate xylose uptake, but no transporter specific for xylose has yet been identified. Over-expressing …

Kinetics of Simultaneous Saccharification and Lactic Acid ...

2008-9-4 · Because of the same optimal temperature and pH requirement as well as the anaerobic condition, the lactic acid fermentation is perfectly compatible with enzymatic hydrolysis of cellulosic materials. In the SSLF processes, the final concentration of lactic acid reached 33.97g/L with a conversion ratio of 79% based on the consumed cellulose.

Exploit Carbon Materials to Accelerate Initiation and ...

2018-1-24 · The aim of this study was to investigate the possibility of improving anaerobic fermentation of carbon monoxide (CO), a dominant component in syngas, through the assistance of different carbon materials (activated carbon, biochar, graphene, carbon cloth, and carbon fiber). Results showed that only biochar and activated carbon could promote CO utilization when the …

A thesis submitted to The University of Manchester for …

2018-8-4 · treatment, over- detoxification and fermentation of sugars, (b) Process 2: via acid pre-treatment, ammonia detoxification and fermentation of sugars..... 92 Figure 33: Simulation of co-fermentation of SB hydrolysate to ABE (a) Process 3: via acid pre-

Modeling product formation in anaerobic mixed culture ...

The anaerobic conversion of organic matter to fermentation products is an important biotechnological process. The prediction of the fermentation products is until now a complicated issue for mixed cultures. A modeling approach is presented here as an effort to develop a methodology for modeling fermentative mixed culture systems.

Light-driven CO2 sequestration in Escherichia coli to ...

2021-4-29 · In the anaerobic fermentation stage, the optimal stoichiometry of converting glucose (C 6 H 12 O 6) to l-malate ... Guipeng Hu, Danlei Ma, Cong Gao, Liu & Xiulai Chen.

Exploit Carbon Materials to Accelerate Initiation and ...

2020-1-13 · The aim of this study was to investigate the possibility of improving anaerobic fermentation of carbon monoxide (CO), a dominant component in syngas, through the assistance of different carbon materials (activated carbon, biochar, graphene, carbon cloth, and carbon fiber). Results showed that only biochar and activated carbon could promote CO utilization when the …

XIA | Zhejiang University, Hangzhou | ZJU

Xia. Peijian Xue. Enzymatic hydrolysis of corncob and ethanol fermentation from cellulosic hydrolysate were investigated. After corncob was pretreated …

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Effect of overliming and activated carbon detoxification ...

2018-6-26 · ABE fermentation was performed in a 125-mL serum bottle. The fermentation medium was composed of 45 mL of corresponding prehydrolysate (glucose concentration: ~ 60 g L −1), yeast extract (1 g L −1), 0.5 mL buffer, 0.25 mL mineral, and 50 μL vitamin solutions.

Anaerobic digestion

In anaerobic digestion, micro-organisms will break down complex organic components in the feedstock in the absence of oxygen. They will produce heat, new microbial biomass and biogas with it, which consists of methane (CH 4) and CO 2. Biogas is a source of green energy. The semi-liquid stream that remains after fermentation is called digestate.

Co-production of solvents and organic acids in butanol ...

Results obtained in 100 mL anaerobic bottles indicated that butanol concentration was enhanced from 10.29 g L 1to 11.36 g L by the addition of 0.1 g L 1 vanillin. Subsequently, a pH-control strategy was proposed in a 5 L anaerobic fermenter to alleviate the "acid crash" phenomenon and improve butanol fermentation performance, simultaneously.

Fungal fermentation on anaerobic digestate for lipid …

2017-8-27 · Fungal fermentation on anaerobic digestate for lipid-based biofuel production Yuan Zhong, Zhiguo Liu, Christine Isaguirre, Yan Liu and Wei Liao* ... is considered to be as the most effective due to its advantages of less energy consumption, simple operation, and good performance [15, 16]. However, it has also been

The Anaerobic Fungi: Challenges and Opportunities for ...

2021-3-27 · @article{osti_1773221, title = {The Anaerobic Fungi: Challenges and Opportunities for Industrial Lignocellulosic Biofuel Production}, author = {Saye, Luke M. G. and Navaratna, Tejas A. and Chong, James P. J. and O''Malley, Michelle A. and Theodorou, Michael K. and Reilly, Matthew}, abstractNote = {Lignocellulose is a promising feedstock for biofuel production as a …

Influence of Selected Substrate Dosage on the Process of ...

2021-9-18 · sludge at the bottom of the fermentation chambers; as a result, they provide the highest available volume for the anaerobic digestion process and minimize the need for chamber cleaning [31]. The capacity of the fermentation tanks allows a retention time of over 100 days.

Propionic Acid Fermentation

Propionic acid fermentation is reported by several Propionibacterium species under anaerobic conditions. However, propionic acid fermentation is currently facing a number of challenges including: low growth rate, product inhibition, and expensive downstream processing for high quality products.

Digestate

The digestate must undergo further treatment to meet the definition of manure processing. Extensive information about anaerobic fermentation can be found on the website of Biogas-e, the platform for the implementation of anaerobic digestion in Flanders.

Guidance Materials for Organic Crop Production

2020-5-8 · Made by oxidative or anaerobic fermentation. Solutions that contain less than 8% acetic acid are vinegar. See also, Vinegar. Reference: 7 CFR 205.105 . Agar Nonsynthetic Also called "agar-agar." See also, Aquatic Plant Products. Reference: 7 CFR 205.105: Agricultural Substances Nonsynthetic

THE NUTRITION AND FEEDING OF FARMED FISH AND …

2021-2-17 · Main biochemical pathways during the anaerobic fermentation of organic wastes. The biogas cycle in China. Compost crib and anaerobic composting techniques. The role of natural food organisms and artificial feeds in the nutrition of fish and shrimp within extensive, semi-intensive and intensive pond culture systems

(PDF) Anaerobic processes in soil

The anaerobic processes listed according to their approximate sequence of occurrence as the redox decreases are: Fe3+ and Mn4+ reduction, denitrification, fermentation…

In situ visualization of the change in lignocellulose ...

The amount of fermentation products and the degradation rate of cellulose and hemicellulose decreased significantly along the extended experiments, suggesting a decrease of biodegradability under anaerobic degradation, although 50% …

Protein hydrolysis and fermentation under methanogenic …

2019-10-26 · These findings indicate that amino acid fermentation or deamination could be the rate- step during anaerobic protein degradation. In the present study we explored the hydrolysis and degradation of gelatine as a model dissolved protein under methanogenic and non-methanogenic conditions at a neutral pH, and at a low pH of 5.

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2019-12-18 · Process analysis of anaerobic fermentation exposure to metal mixtures. International Journal of Environmental Research and Public Health, 2019, 16(14), 2458. (SCI, IF: 2.468) [4]Yonglan Tian, Shusen Li, Ying Li, Huayong Zhang, Xueyue Mi, Hai Huang

The Effects of pH Change through on Soil N2O ...

Nitrous oxide (N2O) is an overwhelming greenhouse gas and agricultural soils, particularly acidic soils, are the main source of its release to the atmosphere. To ameliorate acidic soil condition, materials are added as an amendment. However, the impact of materials has not been well addressed in terms of exploring the effect of soil pH change on N2O emissions.

The effect of Zn NPs has also been reported to …

2020-1-30 · Anaerobic hydrogen yield during course of fermentation in control experiment was 95 mL/3 g (31.66 g/g) of plant materials, while at 100 mg/L of NPs (the maximum ZnO NPs concentration used in this study) hydrogen yield was 35 mL/3 g (11g/g) of plant biomass.