DTU Studieprojekt - Investigation of alternative biocidal agents for marine biofilm prevention

Investigation of alternative biocidal agents for marine biofilm prevention

Udbyder
Vejleder
Sted
København og omegn

• Background
  Marine bio-fouling refers to a process in which a surface exposed to the marine environment becomes available for the accumulation of biological species such as microorganisms, animals and plants. In case of Ship industry, this phenomenon can lead to a higher fuel consumption due to a high frictional resistance, which consequently will increase the emission of toxic compounds in marine environment and atmosphere [1,2]. One effective method to overcome the challenges caused by bio-fouling on ships, is to incorporate anti-foulants within the topcoat of the multilayer coating system. A common technique is to incorporate cuprous oxide (Cu2O) as a biocide in a self-polishing polymer matrix [3]. Despite the effectiveness of this method, there are some concerns regarding the negative impact of high concentrations of copper in marine environment [4]. A promising candidate to partially substitute Cu2O with and still maintain a good antifouling performance can be materials such as Titanium dioxide nanoparticles. It has been shown in previous studies that this material can be used for self-cleaning [5] and antibacterial [6] applications. Therefore, it is interesting for us to investigate the performance of titanium dioxide nanoparticles as an antifouling agent as well as optimizing the coating formulation in order to reduce the overall usage of potential toxic materials.

[6] Qi, K., Cheng, B., Yu, J., & Ho, W. (2017). Journal of Alloys and Compounds, 727, 792–820.

[5] Zhu, T., Cheng, Y., Huang, J., Xiong, J., Ge, M., Mao, J., Liu, Z., Dong, X., Chen, Z., & Lai, Y. (2020). Chemical Engineering Journal, 399, 125746.

[4] N. Voulvoulis, M.D. Scrimshaw, J.N. Lester, Appl. Organometall.Chem. 13 (1999) 135–143.

[3] Chambers, L. D., Stokes, K. R., Walsh, F. C., & Wood, R. J. K. (2006). Surface and Coatings Technology, 201(6), 3642–3652.

[2] Woods Hole Oceanographic Institution (WHOI), US Naval Institute,Annapolis, Iselin, COD, 1952 .

References
[1] V.J.D. Rascio, Corros. Rev. 18 (2–3) (2000) 133–154.

Aim of the project
The main purpose of this project is the formulation of self-polishing organic coatings containing biocide (Cu2O) and a photocatalytic pigment (titanium dioxide) and compare their performance with conventional Cu2O antifouling coatings. Through a preliminary screening, the student will implement different ratios of photocatalyst/biocide in a coating formulation. The performance of these coatings will be evaluated at DTU marine exposure site in Hundested.

Emneord

• Bioteknologi og biokemi
• Fysik
• Informationsteknologi
• Kemi
• Matematik
• Produktion og ledelse
• Transport og logistik
• Klimaændringer
• Teknisk kemi
• Sundhed og sygdomme
• Klimatilpasning
• Miljøkemi
• Innovation og produktudvikling

Navn
Sara Golbarg

Stilling
Ph.d.-studerende

Mail
sargol@kt.dtu.dk

Vejleder-info
Bachelor i Kemi og Teknologi
Vejleder
Sara Golbarg

Medvejledere
Jakob Munkholt Christensen, Amado Andrés Velázquez-Palenzuela, Kim Allan Dam-Johansen

ECTS-point
25 - 35

Type
Bachelorprojekt, Kandidatspeciale

Diplomingeniør, Kemi- og Bioteknik (tidl. Kemi- og Bioteknologi)
Vejleder
Sara Golbarg

Medvejledere
Jakob Munkholt Christensen, Amado Andrés Velázquez-Palenzuela, Kim Allan Dam-Johansen

ECTS-point
25 - 35

Type
Bachelorprojekt, Kandidatspeciale

Kandidatuddannelsen i Kemisk og Biokemisk Teknologi
Vejleder
Sara Golbarg

Medvejledere
Jakob Munkholt Christensen, Amado Andrés Velázquez-Palenzuela, Kim Allan Dam-Johansen

ECTS-point
25 - 35

Type
Bachelorprojekt, Kandidatspeciale

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