Effect of static magnetic field on microbial community during anaerobic digestion

Zieliński, Marcin; Zielińska, Magdalena; Cydzik‐Kwiatkowska, Agnieszka; Rusanowska, Paulina; Dębowski, Marcin

doi:10.1016/j.biortech.2020.124600

Cited by 39 publications

(24 citation statements)

References 36 publications

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“…S3). The Trichococcus genus was the most abundant bacteria present in all samples (11-22%) being able to produce VFAs, such as acetate and lactate [37]. In addition, the Macellibacteroides and Bacteroides genus were also found and are the main VFA-producing bacteria present in the fermentative processes that use proteins or amino acids as substrates [38].…”

Section: Microbiological Characterization Of the Electrodes And Bulks...mentioning

confidence: 94%

Bioelectrochemical enhancement of methane production from exhausted vine shoot fermentation broth by integration of MEC with anaerobic digestion

Carrillo-Peña

Escapa

Hijosa‐Valsero

et al. 2022

Biomass Conv. Bioref.

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A microbial electrolysis cell integrated in an anaerobic digestion system (MEC-AD) is an efficient configuration to produce methane from an exhausted vine shoot fermentation broth (EVS). The cell worked in a single-chamber two-electrode configuration at an applied potential of 1 V with a feeding ratio of 30/70 (30% EVS to 70% synthetic medium). In addition, an identical cell operated in an open circuit was used as a control reactor. Experimental results showed similar behavior in terms of carbon removal (70–76%), while the specific averaged methane production from cycle 7 was more stable and higher in the connected cell (MECAD) compared with the unpolarized one (OCAD) accounting for 403.7 ± 33.6 L CH4·kg VS−1 and 121.3 ± 49.7 L CH4·kg VS−1, respectively. In addition, electrochemical impedance spectroscopy revealed that the electrical capacitance of the bioanode in MECAD was twice the capacitance shown by OCAD. The bacterial community in both cells was similar but a clear adaptation of Methanosarcina Archaea was exhibited in MECAD, which could explain the increased yields in CH4 production. In summary, the results reported here confirm the advantages of integrating MEC-AD for the treatment of real organic liquid waste instead of traditional AD treatment.

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Section: Microbiological Characterization Of the Electrodes And Bulks...mentioning

confidence: 94%

Bioelectrochemical enhancement of methane production from exhausted vine shoot fermentation broth by integration of MEC with anaerobic digestion

Carrillo-Peña

Escapa

Hijosa‐Valsero

et al. 2022

Biomass Conv. Bioref.

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“…The improvement in metabolic activity and cell growth of microorganisms was improved at a lower frequency of magnetic field for the enhancement in bioenergy production (Zhao et al, 2020). Zieliński et al (2021) used higher organic dairy wastewater for the production of energy by means of SMF methods and found the domination in Trichococcus sp, methanogenic bacteria, and hydrogenotrophic methanogens, which enhances the methane content to 56.8%. Furthermore, they found an abundant increase in Lactobacillales, which helps in the growth of methanogens.…”

Section: Innovative Techniquesmentioning

confidence: 99%

Indexing energy and cost of the pretreatment for economically efficient bioenergy generation

Preethi

Gunasekaran

2023

Front. Energy Res.

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The growing necessity for energy worldwide has led to the hunt for an interminable solution in the form of sustainable energy generation. To accomplish sustainability, these problems can be resolved using renewable waste biomass, which is readily accessible and low priced. Moreover, the ecological issue due to the disposal of this waste biomass into the environment is also counteracted by the use of this biomass for energy generation along with the substantial solid reduction for disposal. The presence of complex biopolymers in biomass, which hasten the hydrolysis step during energy generation, was enhanced by the application of a pretreatment method. The efficiency of the pretreatment methods was enhanced by maintaining the cost and energy usage since the commercialization of this method is largely limited. The major economic drivers are based on solid concentration and, thus, lead to higher capital costs. This study reveals the wide assortment of current progression in pretreatment techniques for treating waste biomass with special focus on combined and phase-separated pretreatment. Additionally, it converses the advantages and limitations of pretreatment methods. This pivotal investigation brings about the cost- and energy-effective conversion solution that paves the way for a sustainable energy system.

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“…Investigating cost-effective technologies and sustainable energy resources in wastewater has become crucial for this, where high-strength organic wastewater is used to generate energy to counteract the energy required on site. 1,2 The production of wastewater is inevitable as the population and industrialization increase; hence the energydriven wastewater treatment plant (WWTPs) concept has been an interesting focus.…”

mentioning

confidence: 99%

“…Anerobic digestion (AD) is one of the most suitable technologies for the conversion of waste to energy and has been utilized by most WWTPs. 2 The AD process has basically four stages: hydrolysis, acidogenesis, acetogenesis, and methanogenesis. Each step involves different microorganisms with different metabolisms.…”

mentioning

confidence: 99%

“…The interaction between these microorganisms greatly impacts the performance of the AD; hence, there is a need to maintain homogeneity. 2,3 Acetogenesis and methanogenesis reactions do not take place spontaneously under standard thermodynamic conditions, so environmental factors have a great influence on the efficiency of AD. The interaction of acetogens and methanogens is also the most important relationship during methane production.…”

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confidence: 99%

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Biostimulation of anaerobic digested wastewater using magnetic nanoparticles and an external magnetic field for biogas enhancement

Amo-Duodu

Buthelezi

Rathilal

et al. 2022

Biofuels Bioprod Bioref

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Energy‐driven wastewater treatment plants (WWTP) have become an interesting research focus for environmental and process engineers. To meet the rigorous discharge limit standards imposed by the environmental protection agency (EPA) and South African national standards (SANS), the conventional treatment method has been improved and advanced technologies have been adapted. As such, studies on magnetized anaerobic digestion systems for wastewater treatment with the concept of energy generation have been explored. The present study evaluated the effect of an external magnetic field (MF) on biochemical methane potential (BMP) tests using magnetic nanoparticles (MNP) for wastewater treatment. Two BMP systems were compared, where both systems were dosed with Fe3O4 (MNP) and operated at 35 °C for 10 days. One of the systems (control) was not exposed to the magnetic field while the other system had 3 h of 20 mT magnetic field exposure on daily basis. The system exposed to the magnetic field showed better performance in terms of biogas enhancement and the treatability of the wastewater. About 85% chemical oxygen demand (COD) of the wastewater (350 mg.L–1 COD remaining) was degraded by the MF, which resulted in 72% color removal, 210 mL.day–1 biogas produced and 97% methane. On other hand, 75% COD was degraded by the control system, which resulted in 175 mL.day–1 biogas and 94% methane. Exposing the BMP system coupled with MNPs to an external magnetic field was found to be feasible and promising in terms of biogas production and color removal. © 2022 The Authors. Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley & Sons Ltd.

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Effect of static magnetic field on microbial community during anaerobic digestion

Cited by 39 publications

References 36 publications

Bioelectrochemical enhancement of methane production from exhausted vine shoot fermentation broth by integration of MEC with anaerobic digestion

Bioelectrochemical enhancement of methane production from exhausted vine shoot fermentation broth by integration of MEC with anaerobic digestion

Indexing energy and cost of the pretreatment for economically efficient bioenergy generation

Biostimulation of anaerobic digested wastewater using magnetic nanoparticles and an external magnetic field for biogas enhancement

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