bioelectrochemical systems
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Chemosphere ◽  
2022 ◽  
Vol 287 ◽  
pp. 132299
Author(s):  
C. Nagendranatha Reddy ◽  
Sanath Kondaveeti ◽  
Gunda Mohanakrishna ◽  
Booki Min

2022 ◽  
Vol 334 ◽  
pp. 08009
Author(s):  
Laura Malavola ◽  
Silvia Franz ◽  
Massimiliano Bestetti ◽  
Nunzia Esercizio ◽  
Giuliana D’Ippolito ◽  
...  

This work investigates Reduced Titanium Oxide (RTO) in comparison with Carbon Cloth (CC) and commercial Boron Doped Diamond (BDD) as anodes in hyperthermophilic bioelectrochemical systems operating at 80°C by Thermotoga neapolitana. Two samples of RTO were synthesized by plasma electrolytic oxidation (PEO) of titanium plates and subsequent electrochemical reduction. Electrochemical performance of CC, BDD, and RTO are tested by performing cyclic voltammetry in the anodic region (0-1V, 50 mV/s), in abiotic and biotic conditions. The surface of colonized materials is observed by SEM microscopy. Results show that bacteria fast settle on all tested material, significantly affecting their electrochemical conductivity. The integration of voltammetric cycles reveals that biofilm generates capacitive effects on the anodic surfaces, particularly evident in RTO, less in CC and absent in BDD. Charge densities provided by capacitive response of RTO and CC are of the order of 5.58 and 0.77 mC/cm2, respectively.


Biosensors ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 18
Author(s):  
Andreas Netsch ◽  
Harald Horn ◽  
Michael Wagner

Biofilms growing on electrodes are the heart piece of bioelectrochemical systems (BES). Moreover, the biofilm morphology is key for the efficient performance of BES and must be monitored and controlled for a stable operation. For the industrial use of BES (i.e., microbial fuel cells for energy production), monitoring of the biofilm accumulation directly on the electrodes during operation is desirable. In this study a commercially available on-line heat transfer biofilm sensor is applied to a graphite-polypropylene (C-PP) pipe and compared to its standard version where the sensor is applied to a stainless-steel pipe. The aim was to investigate the transferability of the sensor to a carbonaceous material (C-PP), that are preferably used as electrode materials for bioelectrochemical systems, thereby enabling biofilm monitoring directly on the electrode surface. The sensor signal was correlated to the gravimetrically determined biofilm thickness in order to identify the sensitivity of the sensor for the detection and quantification of biofilm on both materials. Results confirmed the transferability of the sensor to the C-PP material, despite the sensor sensitivity being decreased by a factor of approx. 5 compared to the default biofilm sensor applied to a stainless-steel pipe.


2021 ◽  
pp. 1-93
Author(s):  
Puranjan Mishra ◽  
Putla Sudarsanam ◽  
Durga Madhab Mahapatra ◽  
Ahamad Elmekawy ◽  
Deepak Pant ◽  
...  

Author(s):  
Fangyuan Dong ◽  
Olja Simoska ◽  
Erin Gaffney ◽  
Shelley D. Minteer

Author(s):  
Durga Madhab Mahapatra ◽  
Puranjan Mishra ◽  
Sveta Thakur ◽  
Lakhveer Singh

2021 ◽  
pp. 126628
Author(s):  
K. Chandrasekhar ◽  
Tirath Raj ◽  
S.V. Ramanaiah ◽  
Gopalakrishnan Kumar ◽  
Byong-Hun Jeon ◽  
...  

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