Bioenergy generation and nitrogen removal in a novel ecological-microbial fuel cell

Liu, Shentan; Feng, Xiaojuan; Xue, Hongpu; Qiu, Dengfei; Huang, Zhongdong; Wang, Nianqin

doi:10.1016/j.chemosphere.2021.130450

Cited by 22 publications

(2 citation statements)

References 42 publications

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“…The MFC microorganism Bacillus marisflavi had better adhesion to the anode, making the soluble carbon concentration an essential factor for the performance of the MFC [ 43 ]. Thus, the fermentative products improve the diversity in the substrate, making exoelectrogenic bacteria a rich source of nutrients for their reproduction and making the MFC more efficient [ 44 ]. The dissolved organic carbon (DOC) values decreased by 88.458 and 79.934% for the MFC– Bacillus marisflavi (28.3mg/L) and MFC-Target (49.2 mg/L), respectively, compared to their initial value (245.2 mg/L) [ 45 ].…”

Section: Resultsmentioning

confidence: 99%

Reduction of Toxic Metal Ions and Production of Bioelectricity through Microbial Fuel Cells Using Bacillus marisflavi as a Biocatalyst

Segundo,

De La Cruz-Noriega,

Luis

et al. 2024

Molecules

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Industrialization has brought many environmental problems since its expansion, including heavy metal contamination in water used for agricultural irrigation. This research uses microbial fuel cell technology to generate bioelectricity and remove arsenic, copper, and iron, using contaminated agricultural water as a substrate and Bacillus marisflavi as a biocatalyst. The results obtained for electrical potential and current were 0.798 V and 3.519 mA, respectively, on the sixth day of operation and the pH value was 6.54 with an EC equal to 198.72 mS/cm, with a removal of 99.08, 56.08, and 91.39% of the concentrations of As, Cu, and Fe, respectively, obtained in 72 h. Likewise, total nitrogen concentrations, organic carbon, loss on ignition, dissolved organic carbon, and chemical oxygen demand were reduced by 69.047, 86.922, 85.378, 88.458, and 90.771%, respectively. At the same time, the PDMAX shown was 376.20 ± 15.478 mW/cm2, with a calculated internal resistance of 42.550 ± 12.353 Ω. This technique presents an essential advance in overcoming existing technical barriers because the engineered microbial fuel cells are accessible and scalable. It will generate important value by naturally reducing toxic metals and electrical energy, producing electric currents in a sustainable and affordable way.

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Section: Resultsmentioning

confidence: 99%

Reduction of Toxic Metal Ions and Production of Bioelectricity through Microbial Fuel Cells Using Bacillus marisflavi as a Biocatalyst

Segundo,

De La Cruz-Noriega,

Luis

et al. 2024

Molecules

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“…However, to apply BESs for wastewater treatment, it is necessary to know the microbial communities that are responsible for the oxidation-reduction process of organic matter and energy transformation. For example, within a native microbial community of a complex substrate, such as CWW, there could coexist a great diversity of prokaryotic and eukaryotic microorganisms responsible not only for producing usable energy but also for degrading the carbon sources and complex nutrients during different stages [63,64]. In previous studies [34,45,64] the presence of the genera Acetobacter sp., Bacillus sp., Clostridium sp., and Lactobacillus sp., among others, were associated with, in addition to an electrogenic potential, the anaerobic or fermentative metabolisms that produce the metabolic intermediates used by different electrogenic microorganisms as substrates.…”

Section: Discussionmentioning

confidence: 99%

Determination of Electrogenic Potential and Removal of Organic Matter from Industrial Coffee Wastewater Using a Native Community in a Non-Conventional Microbial Fuel Cell

Erazo

Agudelo-Escobar

2023

Processes

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Microbial fuel cells (MFCs) are an alternative to conventional wastewater treatments that allow for the removal of organic matter and cogeneration of electrical energy, taking advantage of the oxidation–reduction metabolism of organic compounds conducted by microorganisms. In this study, the electrogenic potential and the capacity for the reduction of the organic matter of native microbial communities in wastewater from the wet processing of coffee were evaluated using open-cathode MFCs. To determine the electrogenic potential, a factorial experimental design was proposed in which the origin of the residual water and the source of the inoculum were evaluated as factors. The MFCs operated for 21 days in both open-circuit and closed-circuit operation modes. Voltage records, current determinations, and chemical oxygen demand (COD) analyses were used to establish the power reached in the electrochemical system and the degree of the decontamination of the wastewater. During the MFC operation, voltages from 200–400 mV and power and current densities from 300–900 mW·m−2 and 10–22 mA·m−2, respectively, were reached. The inoculum used, with a statistical significance of α < 0.05, influenced the electrogenic performance of the microbial fuel cell. The previous process of adaptation to the operational conditions of the MFCs of the native microbial community positively influenced the current generation in the system. The degradation rates reached 500–600 mg·L−1·day−1, indicating the metabolic capacity of the microbial community in the MFCs to achieve the decontamination of wastewater from the coffee agroindustry. It was shown the implementation of bioelectrochemical systems constituted a viable option for the treatment of agricultural waste in Colombia. In addition, it was observed the capacity to cogenerate electrical energy from the biotransformation of the polluting organic matter in the effluents of the coffee industry.

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Agriculture‐based Crop in PMFCs for the Futuristic Sustainable Protected Agriculture

Shanmugavel,

Solorza‐Feria,

Kamaraj

2024

Photosynthesis‐Assisted Energy Generation

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Bioenergy generation and nitrogen removal in a novel ecological-microbial fuel cell

Cited by 22 publications

References 42 publications

Reduction of Toxic Metal Ions and Production of Bioelectricity through Microbial Fuel Cells Using Bacillus marisflavi as a Biocatalyst

Reduction of Toxic Metal Ions and Production of Bioelectricity through Microbial Fuel Cells Using Bacillus marisflavi as a Biocatalyst

Determination of Electrogenic Potential and Removal of Organic Matter from Industrial Coffee Wastewater Using a Native Community in a Non-Conventional Microbial Fuel Cell

Agriculture‐based Crop in PMFCs for the Futuristic Sustainable Protected Agriculture

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