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Green Chemistry


Green Chemistry by Mina Marie Mitani Topics of Discussion Environmental Movement Green Chemistry Importance Areas of Research Programs and Partnerships Conclusions ... – PowerPoint PPT presentation

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Title: Green Chemistry

Green Chemistry
  • by Mina Marie Mitani

Topics of Discussion
  • Environmental Movement
  • Green Chemistry
  • Importance
  • Areas of Research
  • Programs and Partnerships
  • Conclusions

Environmental Movement
  • Public Awareness
  • No regulations
  • Publications of effects and consequences
  • Pattern
  • Effects
  • Outcry
  • Laws and regulations

Environmental Movement
  • Dilution is solution
  • Pollution Prevention Act
  • option of first choice
  • national policy of US
  • Alternative Synthetic Pathways for Pollution
  • design synthesis of chemicals for PP
  • collaborations, voluntary partnerships

Environmental Movement
  • Approaches in recent past
  • Reduction of risk of manufacturing and use
  • Innovative chemistries to treat wastes and
    remediate sites
  • New monitoring and analytical tools for
    detection in air, water, soils
  • New handling and containment procedures to
    minimize exposure

Green Chemistry
  • Carrying out chemical activities, including
    chemical design, manufacture, use, and disposal,
    such that hazardous substances will not be used
    and generated
  • Tool in accomplishing Pollution Prevention
  • Encompasses all aspects and types of chemical
    processes to reduce impacts

Green Chemistry
  • Green chemistry is the use of chemistry for
    pollution prevention
  • Design of chemical products and processes that
    are more environmentally benign
  • Reduction or elimination of the use or generation
    of hazardous substances associated with a
    particular synthesis or process

Importance of Green Chemistry
  • 2 billion lbs. of chemicals were released to air
    land and water (USEPA) in 1994
  • Data includes only 365 of 70,000 chemicals
    available in commerce
  • Environmental and hazardous wastes operations gt
    economic burden
  • environmental expenditures cost of doing
  • 100-150 billion / year for remediation in US
  • shift financial resources from costs to research
  • Promise of Green Chemistry to lower overall costs
    associated with environmental health and safety

Areas of Research
  • Feedstocks / Starting Materials
  • Reagents or Transformations
  • Reaction Conditions
  • Final Product
  • inter-related, separated for incremental

Feedstocks / Starting Materials
  • select and utilize more benign starting materials
  • reduction in amount used
  • reduction of intrinsic toxicity through
    structural modification / replacement
  • risks can be reduced through protective gear and
    control techniques, but GC may be more cost
    effective and safer

  • Alternative Synthetic Pathways AwardFlexsys
    America L.P.New Process for 4-Aminodiphenylamine
  • Academic AwardTerrence J. CollinsCarnegie
    Mellon UniversityTAML Oxidant Activators
    General Activation of Hydrogen Peroxide for Green
    Oxidation Technologies
  • Eliminate use of acids to break initial bonds
  • Phosgene replacement

Alternative Reagents
  • Assessment of the hazard of reagent
  • Evaluation of synthetic transformation associated
    with use of specific reagents
  • determine product sensitivity
  • reaction efficiency
  • Improve reaction efficiency
  • Reduce needed quantity
  • eg. Choose catalytic reagent to stoichiometric

  • Use of visible light as reagent
  • Alternative Synthetic Pathways AwardLilly
    Research LaboratoriesPractical Application of a
    Biocatalyst in Pharmaceutical Manufacturing
  • Dr. Karen M. DrathsProfessor John W.
    FrostMichigan State UniversityUse of Microbes
    as Environmentally-Benign Synthetic Catalysts
  • Academic AwardTerrence J. CollinsCarnegie
    Mellon UniversityTAML Oxidant Activators
    General Activation of Hydrogen Peroxide for Green
    Oxidation Technologies

Alternative Reaction Conditions
  • Reduce or eliminate solvents used in reaction
    media, separations, formulations
  • use of supercritical fluids as solvents
  • able to tune supercritical fluids by choosing
    critical region to conduct chemistry
  • Use aqueous solvent systems in place of organic
    solvents in chemical manufacturing
  • Use Supercritical CO2 as a solvent
  • Reduce operating temperatures
  • Must evaluate impact on case by case basis

Alternative Reaction Conditions
  • Alternative Solvents and Reaction Conditions
    AwardNalco Chemical CompanyThe Development and
    Commercialization of ULTIMER The First of a
    New Family of Water Soluble Polymer Dispersions
  • Alternative Solvents/Reaction Conditions
    AwardArgonne National LaboratoryNovel
    Membrane-Based Process for Producing Lactate
    Esters. Nontoxic Replacements for Halogenated and
    Toxic Solvents
  • Alternative Solvents/Reaction Conditions
    AwardImationDry View Imaging Systems
  • Alternative Solvents/Reaction Conditions
    AwardThe Dow Chemical CompanyThe Development
    and Commercial Implementation of 100 Percent
    Carbon Dioxide as an Environmentally Friendly
    Blowing Agent for the Polystyrene Foam Packaging

Alternative Products
  • Identify part of molecule that is providing
    intended use and part of molecule responsible for
    toxicity or other hazards
  • Reduce toxicity w/o sacrificing efficacy of
  • eliminate toxic functional groups
  • make molecule less bioavailable
  • Pharmaceutical and pesticide manufacturing
  • Change or replace products

Alternative Products
  • Designing Safer Chemicals AwardRohm and Haas
    CompanyDesigning an Environmentally Safe Marine
  • Small Business AwardLegacy Systems
    IncorporatedColdstrip, A Revolutionary Organic
    Removal and Wet Cleaning  Technology
  • Designing Safer Chemicals AwardAlbright and
    Wilson AmericasTHPS Biocides A New Class of
    Antimicrobial Chemistry
  • Designing Safer Chemicals AwardRohm and Haas
    CompanyThe Invention and Commercialization of a
    New Chemical Family of Insecticides Exemplified
    by CONFIRM Insecticide

  • EPA Green Chemistry Program
  • fosters research, development, implementation of
    innovative chemical technologies for pollution
    prevention in BOTH a scientifically sound and
    cost effective manner
  • Supports fundamental chemical research,
    educational activities, international meetings
    and conferences, toll development, in partnership
    with academia, industry and other agencies

  • Scientific organizations
  • Industry
  • Trade associations
  • Academia
  • Government
  • National Labs
  • Research centers
  • Environmental groups
  • International organizations

  • Identifies opportunities to reduce or eliminate
    hazardous substances
  • Suggests molecular modifications to minimize
  • Technical information on green synthesis
  • Database of useful green chemistry references

  • Goal of benign chemistry
  • synthesizing classes of chemicals
  • developing reaction types (stereo-specific)
  • Dramatic increase in funding, with support
    expected to continue
  • Green chemistry research conducted in labs in
    academia, industry, and government around the
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