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Semprus Biosciences

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									Water Power Peer Review




                                         Zheng Zhang, Ph.D.
Environmentally Benign and Permanent     Semprus BioSciences

Modifications to Prevent Biofouling on   1 Kendall Square. Building 1400, Cambridge, MA 02139
                                         617/577-7755 x213
Marine and Hydrokinetic Devices           jonathan.zhang@semprusbio.com
                                         September 22, 2011

1 | Program Name or Ancillary Text                                           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.

2 | 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


3 | 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

4 | 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




5 | Wind and Water Power Program                                                                       eere.energy.gov
                                                                            Protein and Bacteria Reduction




      Betaine-Modified             Betaine-modified aluminium panels
      Silicone (PDMS)
                                      (4”X8”) for a 60-day field test
                                                                        Aging Test with Artificial Seawater (ASW)
                   Settlement of Barnacle Cyprids




6 | Wind and Water Power Program                                                                         eere.energy.gov

								
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