{"id":1939,"date":"2020-07-09T15:43:23","date_gmt":"2020-07-09T19:43:23","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/chbe220\/?post_type=chapter&p=1939"},"modified":"2020-08-12T15:02:04","modified_gmt":"2020-08-12T19:02:04","slug":"concepts-and-definitions","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/chbe220\/chapter\/concepts-and-definitions\/","title":{"raw":"Concepts and Definitions","rendered":"Concepts and Definitions"},"content":{"raw":"
\r\n

Learning Objectives<\/p>\r\n\r\n<\/header>\r\n

\r\n\r\nBy the end of this section, you should be able to:\r\n\r\nCharacterize<\/strong>\u00a0green engineering developments\r\n\r\n<\/div>\r\n<\/div>\r\n
\r\n
\r\n
\r\n

Green Engineering Definition<\/h2>\r\nGreen engineering is the design, commercialization, and use of processes and products in a way that reduces pollution, promotes sustainability, and minimizes risks to human health and the environment without sacrificing economic viability and efficiency.[latex]^{[1]}[\/latex].\r\n

Examples of Opportunities in Green Engineering<\/h2>\r\n\u2022 Clean fuels\r\n\r\n\u2022 Sustainable or better regenerative development\r\n\r\n\u2022 Waste reduction\r\n\r\n\u2022 Not having to deal with byproducts, or finding a value use for byproducts\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n
\r\n
<\/div>\r\n
\r\n
\r\n

Basic Ideas Used in Green Engineering<\/h2>\r\nWithin green engineering, we can think about ways to improve processes and generally see that some of these may be more effective than others. Examples of a few means of process improvement listed in order of most effective to least effective follow.\r\n
    \r\n \t
  1. Elimination - remove the need for harmful materials or choosing other process pathways to eliminate the production of harmful products<\/li>\r\n \t
  2. Substitution (also known as waste reduction or process optimization) - using less harmful materials, or optimizing the process to reduce the formation rate of harmful by-products<\/li>\r\n \t
  3. Recycling - putting energy or materials back into use<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n
    \r\n
    <\/div>\r\n
    \r\n
    \r\n\r\nConcepts in green engineering processes generally translate to economic, environmental, and social benefits. Processes meeting these three aims will generally thrive in the long term.\r\n\r\n\"\"\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n
    \r\n
    <\/div>\r\n
    \r\n
    \r\n

    Environmental Regulations<\/h2>\r\nEnvironmental regulations generally determine how companies must act as a minimum. The standards may vary in each country. These will dictate:\r\n\r\n\u2022 Human safety, ensuring people aren't exposed to harmful substances\r\n\r\n\u2022 Pollution control measures that must be reported\r\n\r\n\u2022 Emission limits\r\n\r\nOver time, limits generally get more restrictive \u2192 means that the most efficient processes will be the ones that succeed in the longer term.\r\n\r\nAs an example, environmental restrictions of chemicals in Canada can be found on the site of Health Canada from the Government of Canada<\/a>.\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n
    \r\n
    <\/div>\r\n
    \r\n
    \r\n

    Waste Management Hierarchy<\/h2>\r\nThe waste management hierarchy shows certain methods of process improvements and lists them from least to most effective. The most effective process improvements generally require more detailed engineering as they are more complex. However, they also can create much more efficient processes.\r\n\r\n\"\"\r\n\r\n<\/div>\r\n<\/div>\r\n
    \r\n

    References<\/h2>\r\n
    [1] United States Environmental Protection Agency, About Green Engineering<\/em>, 18-Mar-2019. [Online]. Available: <https:\/\/www.epa.gov\/green-engineering\/about-green-engineering#:~:text=Green<\/a>> [Accessed: 17-Jun-2020].<\/div>\r\n<\/div>\r\n<\/div>\r\n
    \r\n
    \r\n\r\n \r\n\r\n<\/div>\r\n<\/div>","rendered":"
    \n
    \n

    Learning Objectives<\/p>\n<\/header>\n

    \n

    By the end of this section, you should be able to:<\/p>\n

    Characterize<\/strong>\u00a0green engineering developments<\/p>\n<\/div>\n<\/div>\n

    \n
    \n
    \n

    Green Engineering Definition<\/h2>\n

    Green engineering is the design, commercialization, and use of processes and products in a way that reduces pollution, promotes sustainability, and minimizes risks to human health and the environment without sacrificing economic viability and efficiency.[latex]^{[1]}[\/latex].<\/p>\n

    Examples of Opportunities in Green Engineering<\/h2>\n

    \u2022 Clean fuels<\/p>\n

    \u2022 Sustainable or better regenerative development<\/p>\n

    \u2022 Waste reduction<\/p>\n

    \u2022 Not having to deal with byproducts, or finding a value use for byproducts<\/p>\n<\/div>\n<\/div>\n<\/div>\n

    \n
    <\/div>\n
    \n
    \n

    Basic Ideas Used in Green Engineering<\/h2>\n

    Within green engineering, we can think about ways to improve processes and generally see that some of these may be more effective than others. Examples of a few means of process improvement listed in order of most effective to least effective follow.<\/p>\n

      \n
    1. Elimination – remove the need for harmful materials or choosing other process pathways to eliminate the production of harmful products<\/li>\n
    2. Substitution (also known as waste reduction or process optimization) – using less harmful materials, or optimizing the process to reduce the formation rate of harmful by-products<\/li>\n
    3. Recycling – putting energy or materials back into use<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n
      \n
      <\/div>\n
      \n
      \n

      Concepts in green engineering processes generally translate to economic, environmental, and social benefits. Processes meeting these three aims will generally thrive in the long term.<\/p>\n

      \"\"<\/p>\n<\/div>\n<\/div>\n<\/div>\n

      \n
      <\/div>\n
      \n
      \n

      Environmental Regulations<\/h2>\n

      Environmental regulations generally determine how companies must act as a minimum. The standards may vary in each country. These will dictate:<\/p>\n

      \u2022 Human safety, ensuring people aren’t exposed to harmful substances<\/p>\n

      \u2022 Pollution control measures that must be reported<\/p>\n

      \u2022 Emission limits<\/p>\n

      Over time, limits generally get more restrictive \u2192 means that the most efficient processes will be the ones that succeed in the longer term.<\/p>\n

      As an example, environmental restrictions of chemicals in Canada can be found on the site of Health Canada from the Government of Canada<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

      \n
      <\/div>\n
      \n
      \n

      Waste Management Hierarchy<\/h2>\n

      The waste management hierarchy shows certain methods of process improvements and lists them from least to most effective. The most effective process improvements generally require more detailed engineering as they are more complex. However, they also can create much more efficient processes.<\/p>\n

      \"\"<\/p>\n<\/div>\n<\/div>\n

      \n

      References<\/h2>\n
      [1] United States Environmental Protection Agency, About Green Engineering<\/em>, 18-Mar-2019. [Online]. Available: <https:\/\/www.epa.gov\/green-engineering\/about-green-engineering#:~:text=Green<\/a>> [Accessed: 17-Jun-2020].<\/div>\n<\/div>\n<\/div>\n
      \n
      \n

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