Dear All,
Chip Blatchley will present his I2D Lab-Center
for Global Food Security project at Burton Morgan 121,
Thursday, April 27, 2017
3:00 - 4:00 PM.
If you have a chance to attend, I am sure Chip would appreciate your support and your questions. Please do tell your students about this presentation!
Very best wishes, Andrea
Andrea Burniske
Program Manager, I 2D
Lab
Global Engineering Programs, 4th Floor, Wang Hall
Purdue University
West Lafayette, IN
Ph: 765.496.3533
Skype: AndreaLaBurniske
https://engineering.purdue.edu/GEP/I2DLab
Punctuated Equilibrium -
the hypothesis that evolutionary development is marked by isolated episodes of rapid speciation between long periods of little or no change
From: Burniske, Gary R
Sent: Monday, April 24, 2017 8:57 AM
To: Burniske, Andrea E <Andreaburniske@purdue.edu>
Subject: FW: PCGFS-I2D Lab Seed Grant Seminar - APR 27, 2017
Hi Andrea:
Could you please send this out to the I2D Lab list, and if you can get it into the hands of students in Engineering as well, that would be helpful.
Thanks,
Gary
Gary R. Burniske
Managing Director
Center for Global Food Security
Purdue University
Mann Hall, Room 105
203 S. Martin Jischke Drive
West Lafayette, IN 47907-1971
Tel. 765-494-0941
Fax 765-496-9322
Cel. 360-836-7179
Email
grburniske@purdue.edu
Skype gary.r.burniske
From: Dillworth, Angela
Sent: Monday, April 24, 2017 8:47 AM
To: Burniske, Gary R <grburniske@purdue.edu>
Subject: PCGFS-I2D Lab Seed Grant Seminar - APR 27, 2017
PCGFS-I2D LAB SEED GRANT SEMINAR
DR.
ERNEST (CHIP) BLATCHLEY
Solar Ultraviolet Disinfection of Water
Thursday, April 27, 2017
3:00 - 4:00 PM, MRGN 121
ABSTRACT: Access to safe, affordable water is a pressing problem in many developing countries. Technological
solutions to this problem exist, but their implementation is complicated by social, cultural, economic, and political constraints that are different from those experienced in developed countries. Sustainable solutions to safe water supply in developing countries
tend to share some common characteristics, including the use of locally-available resources, both human and natural. This presentation will provide a summary of past and ongoing research to examine the use of one such resource, solar radiation, to disinfect
water.
Ultraviolet (UV) radiation is known to be effective for inactivation of microbial pathogens; however, relatively little work has been conducted to define the responses of microbial pathogens
to ambient solar radiation. To address this issue, laboratory experiments were conducted to define the action spectra (i.e., wavelength dependence) of the inactivation responses of bacterial and protozoan microbes. When combined with information (both measured
and simulated) to describe ambient solar spectral irradiance, it was then possible to quantify the spectral efficacy of ambient solar radiation against these microbes. Experiments have been conducted with two reactor types that accomplish continuous disinfection,
as would be relevant in a community setting. These reactor systems involved either a compound parabolic collector (CPC) or a Fresnel lens to amplify ambient solar spectral irradiance. Both were effective for inactivation of waterborne microbes, but involved
different levels of complexity. However, the CPC turns out to have relatively simple mechanical requirements, and as such appears to be the preferred option for “direct solar’ UV disinfection. Another approach that has merit involves the collection of solar
energy on solar panels, with storage on a nearby battery. In turn, this electrical energy is used to power a small-scale commercial UV disinfection reactor. Testing of these “indirect solar” reactors has demonstrated their ability to disinfect large volumes
of water with low electrical power requirement.
A life-cycle assessment was developed to allow comparisons of the overall impacts of direct and indirect solar UV disinfection. The results of this LCA indicated that the direct system is generally
favored in small-scale applications, such as would be appropriate for a small cluster of houses. The indirect solar UV systems are better suited to larger-scale applications, such as the development of community-scale water supplies. An ongoing study is being
conducted to examine the use of indirect reactors in several communities in western Kenya.
Dr. Ernest R. Blatchley III is a Professor with a joint appointment in the Lyles School of Civil Engineering and the Division of Environmental & Ecological Engineering. He teaches and conducts
research in the general area of physico/chemical processes of Environmental Engineering. The focus of his research is in disinfection and advanced oxidation processes, especially those that involve the use of UV radiation, chlorine, or both.
Purdue Center for Global Food Security
Email:
foodsecurity@purdue.edu
Web:
www.purdue.edu/discoverypark/food
Facebook:
www.facebook.com/pcgfs
Twitter: @PurdueCGFS