Effect of bacterial biofilm on 316 SS corrosion in natural seawater by eis

Gonzalez, J. E.; Santana, a F.J.H.; Rosca, Julia Claudia Mirza

doi:10.1016/s0010-938x(98)00100-0

Cited by 106 publications

(46 citation statements)

References 6 publications

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“…8b. The R 0 and Q 0 are two parameters related to the resistance and capacitance through the biofilm what other authors call the impedance response of compact biofilm formed in presence of bacterial activity [17], while R ct and Q dl correspond to the corroded areas placed underneath. Such equivalent circuit allowed us to achieve an excellent agreement between experimental and modelled measurements, Fig.…”

Section: Resultsmentioning

confidence: 99%

Corrosion of stainless steels covered by exopolymers

Cristóbal

Arenas

Conde

et al. 2006

Electrochimica Acta

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Section: Resultsmentioning

confidence: 99%

Corrosion of stainless steels covered by exopolymers

Cristóbal

Arenas

Conde

et al. 2006

Electrochimica Acta

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“…The time constants have been related to the response of the corrosion products layer [42] and the growth and stabilization of the fungi adhesive layer after exposure [32]. Considering the actual corrosion situation of AZ31B magnesium alloy, the hyphae of A. niger and corrosion products all could adsorb on the surface of matrix and their contributions were indistinguishable, the same equivalent circuit was used in this paper.…”

Section: Page 18 Of 44mentioning

confidence: 99%

Effect of the fungus, Aspergillus niger , on the corrosion behaviour of AZ31B magnesium alloy in artificial seawater

Wang

et al. 2015

Corrosion Science

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“…Besides the cell type itself (cell wall/membrane compositions, size and shape), many physical parameters, especially in the media (pH and ion concentrations), can influence the potential distribution in the double layer [20,21]. Furthermore, the given method via α-dispersion detection is capable of detecting even very small numbers of bacteria in soil, food and feces-polluted water using interdigitated microelectrode designs [22][23][24][25][26][27]. These studies were only performed at a very small scale and with a low cell concentration.…”

Section: Introductionmentioning

confidence: 99%

Low-Frequency Electrochemical Impedance Spectroscopy as a Monitoring Tool for Yeast Growth in Industrial Brewing Processes

et al. 2017

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Today's yeast total biomass and viability measurements during the brewing process are dependent on offline methods such as methylene blue or florescence dye-based staining, and/or the usage of flow cytometric measurements. Additionally, microscopic cell counting methods decelerate an easy and quick prediction of yeast viability. These processes are time consuming and result in a time-delayed response signal, which not only reduces the knowledge of the performance of the yeast itself, but also impacts the quality of the final product. Novel approaches in process monitoring during the aerobic and anaerobic fermentation of Saccharomyces cerevisiae are not only limited to classical pH, dO 2 and off-gas analysis, but they also use different in situ and online sensors based on different physical principles to determine the biomass, product quality and cell death. Within this contribution, electrochemical impedance spectroscopy (EIS) was used to monitor the biomass produced in aerobic and anaerobic batch cultivation approaches, simulating the propagation and fermentation unit operation of industrial brewing processes. Increases in the double-layer capacitance (C DL ), determined at frequencies below 1 kHz, were proportional to the increase of biomass in the batch, which was monitored in the online and inline mode. A good correlation of C DL with the cell density was found. In order to prove the robustness and flexibility of this novel method, different state-of-the-art biomass measurements (dry cell weight-DCW and optical density-OD) were performed for comparison. Because measurements in this frequency range are largely determined by the double-layer region between the electrode and media, rather minor interferences with process parameters (aeration and stirring) were to be expected. It is shown that impedance spectroscopy at low frequencies is not only a powerful tool for the monitoring of viable yeast cell concentrations during operation, but it is also perfectly suited to determining physiological states of the cells, and may facilitate biomass monitoring in the brewing and yeast-propagating industry drastically.

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Effect of bacterial biofilm on 316 SS corrosion in natural seawater by eis

Cited by 106 publications

References 6 publications

Corrosion of stainless steels covered by exopolymers

Corrosion of stainless steels covered by exopolymers

Effect of the fungus, Aspergillus niger , on the corrosion behaviour of AZ31B magnesium alloy in artificial seawater

Low-Frequency Electrochemical Impedance Spectroscopy as a Monitoring Tool for Yeast Growth in Industrial Brewing Processes

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