Rotation Disk Process to Assess the Influence of Metals and Voltage on the Growth of Biofilm
Abstract
:1. Introduction
2. Results and Discussion
2.1. SEM Data
2.2. Rotation Disk Reactor Compared to Others
3. Materials and Methods
3.1. Test Samples
Sample Number | Electrode Details |
0 | control: nylon mounted |
1 | single silver |
2 | single stainless steel |
3 | single brass |
4 | stainless steel—brass |
5 | stainless steel—stainless steel with voltage applied |
6 | brass—brass with voltage applied |
7 | brass positive—stainless steel negative with voltage applied |
8 | brass negative—stainless steel positive with voltage applied |
3.2. Observations
4. Conclusions
Author Contributions
Conflicts of Interest
References
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Sample | Week 1 | Week 2 | Week 3 | Week 4 |
---|---|---|---|---|
0 Control: Latex with nylon Mounting | Hydrophobic, Whitish-yellow discoloration near nylon bolt. | 90% discolored and wetted on front and 25% on back with small protuberances. | 100% wetted. 30% Coverage of small protuberances on front & some on back. | Similar to Week 3. |
1 Latex with silver | Hydrophobic, No discoloration near bolt head. | 50% discoloration on front with a few protuberances and 60% discoloration on back. | Hydrophilic, 60% Medium-sized bumps on front & 30% on back. | 80% medium sized protuberances (bumps) on front and 80% on back. |
2 Latex with stainless steel | Hydrophobic, discoloration near bolt head. | 30% discoloration near metal on front and 15% discoloration on back. | Front hydrophilic. 80% large bumps on front & 20% small on back. | Similar to Week 3. White–yellow and grey discoloration on back. |
3 Latex with brass | Hydrophobic with no discoloration near bolt head. | 50% discolor on front near electrode & 50% discoloration on back. | Hydrophilic, 90% large bumps on front & 30% small ones on back. | Similar to Week 3. White–yellow and grey discoloration on back. |
4 Latex with stainless steel–brass electrodes | Hydrophobic, discolor near stainless steel electrode & 50% discoloration on back. | 60% discoloration on front near electrodes. 75% discoloration on back. | Hydrophilic with 50% small protuberances on front. | Similar to Week 3. White–yellow and grey discoloration on back and tip. |
5 Latex with stainless steel–stainless steel electrodes and voltage applied | Hydrophobic, clear between electrodes, & 80% discolor on back. | 50% discoloration on front, mostly around electrodes and 95% discoloration on back. | Hydrophilic with 80% small protuberances on front. | Similar to Week 3. White–yellow and grey discoloration on back. |
6 Latex with brass–brass electrodes and voltage applied | Hydrophobic, clear between electrodes, & 40% discoloration on back. | 40% discoloration on front and 80% discoloration on back. | Hydrophilic with 30% large protuberances on front and 10% small protuberances on back. | Similar to Week 3. Some additional discoloration on front. |
7 Latex with brass positive electrode and stainless steel negative electrode | Hydrophobic. Discolor between electrodes & near brass electrode & 50% discoloration on back. | 80% discoloration on front, particularly around brass electrode. 85% discoloration on back. | Hydrophilic with a few small protuberances on back. | Similar to week 3. Some discoloration on front. |
8 Latex with brass negative electrode and stainless steel positive electrode | Hydrophobic, equal discolor near & between electrodes. 70% discoloration on back and near the brass. | 85% discoloration on front and 95% discoloration on back. | Hydrophilic with a few protuberances. | 20% small protuberances on front with some discoloration on front and back between electrodes. |
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Barry, D.M.; McGrath, P.B. Rotation Disk Process to Assess the Influence of Metals and Voltage on the Growth of Biofilm. Materials 2016, 9, 568. https://doi.org/10.3390/ma9070568
Barry DM, McGrath PB. Rotation Disk Process to Assess the Influence of Metals and Voltage on the Growth of Biofilm. Materials. 2016; 9(7):568. https://doi.org/10.3390/ma9070568
Chicago/Turabian StyleBarry, Dana M., and Paul B. McGrath. 2016. "Rotation Disk Process to Assess the Influence of Metals and Voltage on the Growth of Biofilm" Materials 9, no. 7: 568. https://doi.org/10.3390/ma9070568