Zhenglong Li, Lu Yao, Lingcai Kong et al.

Bioresource Technology • 2008

To make sure that microbial fuel cells (MFCs) are more convenient to stack, a baffled single-chambered MFC with two groups of electrodes sharing only one anode chamber was designed and the performance was examined. The experiments showed that the prototype MFC generated electrical power (maximum of 133 mW/m(2)) while removing up to 88% of chemical oxygen demand (COD) in 91 h. Volumetric power increased as electrode area per anode compartment volume increased, indicating that the MFC with two groups of electrodes was better than that with one group. Power density as a function of wastewater concentration was modeled according to saturation kinetics, with a maximum power density of P(max)=164 mW/m(2) (fixed 100 Omega resistor) and half-saturation concentration of K(s)=259 mg/l. The hydraulic retention time (HRT) was examined as a factor influencing the power generation. When it was 15.5h, the voltage and the power density reached the maximum 0.413 V and 108 mW/m(2).

Al-Shehri, A. N.

Scientific Research and Essays • 2011

Xiuping Zhu, Jinren Ni

Electrochemistry Communications • 2009

B.G.Mahendra .

International Journal of Research in Engineering and Technology • 2013

Two microbial fuel cells were inoculated with activated sludge from Finland and operated under moderate (25 °C) and low (8 °C) temperatures. Operation under real urban wastewater showed similarities in chemical oxygen demand removal and voltage generated, although moderate temperature supported higher ammonium oxidation. Fungi disappeared in the microbial fuel cell operated at temperature of 25 °C. Archaea domain was dominated by methanogenic archaea at both temperature scenarios. Important differences were observed in bacterial communities between both temperatures, however generating similar voltage. The results supported that the implementation of microbial fuel cells in Nordic countries operating under real conditions could be successful, as well as suggested the flexibility of cold-adapted inoculum for starting-up microbial fuel cells, regardless of the operating temperature of the system, obtaining higher COD removal and voltage generation performances at low temperature than at moderate temperature.

Fuel Cells Bulletin • 2005

Yun YIN, Yisheng LIU, Yifei WANG et al.

Chinese Journal of Appplied Environmental Biology • 2010

Vishnu Agarwal

Indian Journal of Science and Technology • 2011

Xiaoxin Cao

ECS Meeting Abstracts • 2008

Abstract not Available.

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Journal of Biochemical Technology • 2012

Daehee Kim, In Seop Chang

Bioresource Technology • 2009

A microbiological process was established to harvest electricity from the carbon monoxide (CO). A CO fermenter was enriched with CO as the sole carbon source. The DGGE/DNA sequencing results showed that Acetobacterium spp. were enriched from the anaerobic digester fluid. After the fermenter was operated under continuous mode, the products were then continuously fed to the microbial fuel cell (MFC) to generate electricity. Even though the conversion yield was quite low, this study proved that synthesis gas (syn-gas) can be converted to electricity with the aid of microbes that do not possess the drawbacks of metal catalysts of conventional methods.

Chi-Wen Lin, Chih-Hung Wu, Yu-Hsuan Chiu et al.

Fuel • 2014

Wei Li, Xiaohong Chen, Linshen Xie et al.

Water • 2020

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• 2024

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The Journal of Economic Perspectives • 2000

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The Journal of Economic Perspectives • 2000

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Horticulturae • 2023

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Electrochemistry • 2020

[object Object], [object Object], [object Object] et al.

BMC Microbiology • 2021

Abstract Background Bacterial communities are responsible for biological nutrient removal and flocculation in engineered systems such as activated floccular sludge. Predators such as bacteriophage and protozoa exert significant predation pressure and cause bacterial mortality within these communities. However, the roles of bacteriophage and protozoan predation in impacting granulation process remain limited. Recent studies hypothesised that protozoa, particularly sessile ciliates, could have an important role in granulation as these ciliates were often observed in high abundance on surfaces of granules. Bacteriophages were hypothesized to contribute to granular stability through bacteriophage-mediated extracellular DNA release by lysing bacterial cells. This current study investigated the bacteriophage and protozoan communities throughout the granulation process. In addition, the importance of protozoan predation during granulation was also determined through chemical killing of protozoa in the floccular sludge. Results Four independent bioreactors seeded with activated floccular sludge were operated for aerobic granulation for 11 weeks. Changes in the phage, protozoa and bacterial communities were characterized throughout the granulation process. The filamentous phage, Inoviridae, increased in abundance at the initiation phase of granulation. However, the abundance shifted towards lytic phages during the maturation phase. In contrast, the abundance and diversity of protozoa decreased initially, possibly due to the reduction in settling time and subsequent washout. Upon the formation of granules, ciliated protozoa from the class Oligohymenophorea were the dominant group of protozoa based on metacommunity analysis. These protozoa had a strong, positive-correlation with the initial formation of compact aggregates prior to granule development. Furthermore, chemical inhibition of these ciliates in the floccular sludge delayed the initiation of granule formation. Analysis of the bacterial communities in the thiram treated sludge demonstrated that the recovery of ‘ Candidatus Accumulibacter’ was positively correlated with the formation of compact aggregates and granules. Conclusion Predation by bacteriophage and protozoa were positively correlated with the formation of aerobic granules. Increases in Inoviridae abundance suggested that filamentous phages may promote the structural formation of granules. Initiation of granules formation was delayed due to an absence of protozoa after chemical treatment. The presence of ‘ Candidatus Accumulibacter’ was necessary for the formation of granules in the absence of protozoa.

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Energy & Environmental Science • 2021

[object Object], [object Object], [object Object] et al.

Nature Communications • 2022

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[object Object], [object Object], [object Object] et al.

Catalysts • 2022

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Biotechnology & Biotechnological Equipment • 2014

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Agronomy • 2019

The biotransformation of partheniol by the fungus Calonectria decora ATCC 14767, produced six metabolites. These metabolites are; aromadendr-1(10)-en-8alpha -ol; 5(9),6-tricyclohumul-1(10)-en-8alpha-ol; 4,15-didehydro-6-bicyclohumulan-8a,10alpha-diol; 5(9),6-tricyclohumulan-4a,8alpha-diol; maalian-la,8alpha-diol and 14-epi-1(4)-epoxymaalian-8alpha-ol. The identities of these metabolites were established by different spectroscopic measurements.

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[object Object], [object Object], [object Object] et al.

The Journal of Cell Biology • 2002

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[object Object], [object Object], [object Object] et al.

Geoscientific model development • 2015

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Jurnal Penelitian Pendidikan IPA • 2023

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[object Object], [object Object], [object Object] et al.

Nature Communications • 2018

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Molecular Biotechnology • 2021