1. wonderfulengineering.com

2. Add reference

4. empty?
Jess

5. Harmful Effects of Heavy Metals
Nickel
Skin irritation, lung, and sinus cancer
Aluminum
Kidney, brain damage
Bone degradation
Selenium
Pulmonary edema
Manganese
Nervous system and kidney damage
Lead
Miscarriages, inhibited spermatogenesis

6. Environmental Risk Assessment
Hazard Quotient = Exposure / Reference Dose
MCL- Maximum Contaminant Level
HQ>1 Health Risks
HQ<1 No Health Risks

7. One instrument used extensively by every group to calculate concentration in parts per billion was the inductively-coupled plasma optical emission spectrometer.
This instrument nebulizes a sample, and uses plasma to excite the electrons of specific elements. If you look at the ICP-OES on the screen you can see a little blue circle of plasma. Plasma is really cool, like 6000K cool!
As the electrons return to their ground states, each releases a wavelength of light characteristic to its corresponding element.
The optical emission spectrometer then measures the intensity of each element, which is converted to concentration by comparing the intensities to the known intensities of standard concentrations, as pictured above. Here, the calibration curve of Molybdenum is displayed on an intensity vs concentration graph. So if Molybdenum had an intensity of 120, the concentration would be about 150 parts per billion.

8. The first experiment we conducted was the leaching of electronic parts in pond water. This allowed us to determine the concentrations of heavy metals leached from the e-waste.

9. Emma

10. Derek

11. Nick

15. http://www. rubber-granules

18. Efficacy of sand and soil to prevent leaching of heavy metals
REMEDIATION
Efficacy of sand and soil to prevent leaching of heavy metals

19. STUDY: SAND AND SOIL AS RETENTION MEDIA
3 sand, 3 soil dishes
1 mL ppb lead nitrate
Samples taken, analyzed for lead concentration

20. Sand retains lead better than soil
Intensity plotted against radius
Similar volume samples produced concordant results
Soil carried a higher concentration of leachate further from contamination site

21. OUTLOOK Pond water: significant heavy metal leaching
Crumb rubber: heavy metal leaching insignificant to human health
Harmful volatile organic compounds
Sand better at stopping leaching
Potential use in e-waste facilities
Pond water- significant leaching
Crumb rubber- insignificant to human health.
Volatile organic compounds?
Sand was better at stopping leaching
May be used in e-waste facilities

22. Our gracious sponsors:
Acknowledgements
Advisors and faculty:
Dr. Ryan Hinrichs
Kelsie Kolb
Kaushaly Patel
Dr. Adam Cassano
Dr. Steve Surace
Drew University
Our gracious sponsors:
AT&T, Bayer Healthcare, Independent College Fund of NJ, The Overdeck Family Foundation, Novartis, Allergan, Mango, Johnson & Johnson, Celgene, NJGSS Alumnae, Parents and Corporate Matching Funds, The State of NJ