1 | Program Name or Ancillary Text eere.energy.gov Water Power Peer Review Environmentally Benign and Permanent Modifications to Prevent Biofouling on Marine and Hydrokinetic Devices Zheng Zhang, Ph.D. Semprus BioSciences 1 Kendall Square. Building 1400, Cambridge, MA 02139 617/577-7755 x213 j[email protected]September 22, 2011
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1 | Program Name or Ancillary Texteere.energy.gov Water Power Peer Review Environmentally Benign and Permanent Modifications to Prevent Biofouling on Marine.
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1 | Program Name or Ancillary Text eere.energy.gov
Water Power Peer Review
Environmentally Benign and Permanent Modifications to Prevent Biofouling on Marine and Hydrokinetic Devices
Zheng Zhang, Ph.D.Semprus BioSciences1 Kendall Square. Building 1400, Cambridge, MA 02139617/577-7755 x213 [email protected] 22, 2011
2 | Wind and Water Power Program eere.energy.gov
Purpose, Objectives, & Integration
Purpose:Develop environmentally benign and permanent modifications to prevent
biofouling on marine and hydrokinetic (MHK) devices.
Objectives:
Offer improvements and enhancements to MHK systems in the following segments related to biofouling:
– Energy efficiency
– Reliability
– Power quality
– Environmental impact
– Maintenance costs
Integration:
Expect to outperform currently used nontoxic underwater coatings in biofouling resistance and be ready for the next stage of development with demonstration in MHK systems.
3 | Wind and Water Power Program eere.energy.gov
Technical Approach
• Design and develop modification systems applicable for permanent anti‐fouling modifications. (Planned completion date: 9/30/2011)
– Monomer and polymer synthesis– Modification formulation development– Curing/applying method development– Characterization and stability evaluation
• Demonstrate a broad spectrum of anti‐biofouling performance, long‐term efficacy and biocompatibility. (Planned completion date: 12/31/2011)
– Protein adsorption assay – Bacterial/biofilm assay – Barnacle assay– Biocompatibility evaluation – 60‐day field test
4 | Wind and Water Power Program eere.energy.gov
Key Issues and Unique Approach
Key Issues• Broad spectrum of anti-fouling efficacy• Mechanical properties, applicability, and compatibility to current underwater
coatings • Long-term stability and anti-fouling performance• Translation to field efficacy
Unique Approach• Molecular design of betaine-based monomers and polymers to resist bio-
fouling. • Optimized formulations and applying conditions to achieve high anti-fouling
efficacy with mechanical performance and stability • Modification and application adaptable to current underwater coating systems.• Demonstration of anti-fouling performance with model fouling organisms and a
60-day field test
5 | Wind and Water Power Program eere.energy.gov
Plan, Schedule, & Budget
Schedule:• Initiation date: January 1, 2011• Planned completion date: December 31, 2011• Milestones for FY10 and FY11:
– Milestone 1: Design modification systems and synthesize polymers applicable for permanent anti‐fouling modifications. Planned completion date: September 30, 2011
– Milestone 2: Demonstrate a broad spectrum of anti‐biofouling performance, long‐term efficacy, and biocompatibility. Planned completion date: December 31, 2011
Budget:
Budget History
FY2009 FY2010 FY2011
DOE Cost-share DOE Cost-share DOE Cost-share
160K 40K
6 | Wind and Water Power Program eere.energy.gov
Settlement of Barnacle Cyprids
Protein and Bacteria Reduction
Aging Test with Artificial Seawater (ASW)
Betaine-Modified Silicone (PDMS)
Betaine-modified aluminium panels (4”X8”) for a 60-day field test