Yale University
225 Prospect Street
New Haven, CT 06520
phone: 203.432.5215
greenchemistry@yale.edu

Systems

  • Life Cycle Assessment of Algal Biofuels and Bio-based Products

     Details...
    This project uses technology modeling and life cycle assessment to characterize the systems-level environmental implications of producing algal fuels and bioproducts.

    Algae are a potentially bountiful feedstock for bio-products and biofuels, but as a nascent technology, the environmental impacts of large scale cultivation and processing need to be assessed.  This project has two parts - one is to examine different technological options for algae cultivation and processing and to test different combinations for their environmental performance.  The second is to gather existing life cycle assessment studies of algae that report a wide range of energy and green house gas results, and to undertake a meta-analysis in order harmonize the studies and look for central tendencies.  This enables a meaningful discussion of actual technological difference among systems, which were previously obscured by the wide range of modeling assumptions and system boundaries considered.

  • Life Cycle Assessment of Chitosan

     Details...
    This work seeks to quantify the environmental impacts of manufacturing the biopolymer chitosan from chitin.

    Data is being collected from various chitosan manufacturing plants, covering several different methods of chitosan production.  This project will analyze the environmental impacts at different steps of the processes and provide a basis for comparing chitosan to other chemicals used in the application areas.

  • Sustainable Urban Stormwater Management: Critical Review and Path Forward

     Details...
    A critical review of the science of sustainable stormwater management, including definition of best management practices and low impact developments for stormwater, green infrastructure, as well as sustainable stormwater management; modeling to inform stormwater practice; optimized watershed scale design; and implementation.

    Literature from both academic and public sources is considered in order to provide a holistic perspective.  There are many tools available for stormwater management, but there is little evidence of systematic design processess and outcomes due to the lack of 1) large-scale environmental performace data; 2) cost-effectiveness studies that include life cycle costs; and 30 pricin and policy structures that engage broader stakeholders.  We presented a decision process based on systems thinking and show where current literature meets decision-making needs, where research gaps exist, and how research needs should be prioritized to support sustainable stormwater infrastructure implementation.  We are aslo starting data collection and model development of hydrology in the city of New Haven to test best management practices in model setting.