Plants often in association with symbiotic

Info icon This preview shows page 2. Sign up to view the full content.

View Full Document Right Arrow Icon
Plants (often in association with symbiotic microorganisms) produce enzymes as root exudates to break-down complex organic molecules while others absorb and metabolize organic contaminants. Bioremediation is most appropriate where large areas of soil are contaminated with only moderate concentrations of pollutants. This technique takes a long time to remove large quantities of contaminants; however, it is much cheaper than engineered solutions. Several soil organisms (especially bacteria and fungi) have the capability to break-down complex organic molecules. Bioremediation can be enhanced by manipulating several factors related to the growth of the organisms and the availability of the pollutant: 1. Specific organisms can be purchased to inoculate the contaminated site with the best organisms. "Superbacteria" are being genetically engineered to enhance bioremediation potential. 2. Fertilization - supply adequate nutrients for growth (N & P are most limiting) 3. Supply oxygen in cases where aerobic organisms are limited by lack of oxygen. 4. Add an additional food source to speed metabolic activity ( e.g., CH 4 gas, pectin). 5. Add a surfactant (detergent) to solubilize sparingly soluble organic compounds (make the compound available to the organism).
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern