Navigation Links
Device eliminates 93 percent of lawnmower pollutant
Date:7/7/2014

RIVERSIDE, Calif. (http://www.ucr.edu) A team of University of California, Riverside Bourns College of Engineering students have won an EPA student design contest for a device they created that curbs harmful pollutant emitted from lawnmowers by 93 percent.

The students developed the device an "L" shaped piece of stainless steel that attaches to the lawnmower where its muffler was because small engine devices produce significant harmful emissions. For example, the Environmental Protection Agency estimates that a gasoline powered lawn mower emits 11 times the air pollution of a new car for each hour of operation.

The grey piece is a metal mesh filter to remove particulate matter and the white piece is the catalyst support structure.

The students' device has also fits in with UC President Janet Napolitano's recent announcement to make the University of California system carbon neutral by 2025. With that in mind, employees responsible for maintaining the lawns at UC Riverside have agreed to pilot the students' device. That will likely start in the coming months.

The team, which calls itself NOx-Out, believes there is a market for the device for lawnmower manufacturers and current lawnmower owners, especially operators of landscape companies, who could retrofit their existing gasoline-powered lawnmower. The device has the added benefits of reducing noise from the lawnmower and the smell of gasoline.

The students Timothy Chow, Brian Cruz, Jonathan Matson and Wartini Ng, all of whom just graduated won a phase one grant of $15,000 as part of the EPA's P3 (People, Prosperity and the Planet) competition. Next year a new group of students Anna Almario, Priyanka Singh and Alyssa Yan will take over the project and compete for a $90,000 phase two grant.

All the students have been advised by Kawai Tam, a lecturer at the Bourns College of Engineering, Phillip Christopher, an assistant professor of chemical and environmental engineering, and David Cocker, a professor of chemical and environmental engineering.

The student team that just graduated inherited the project from another team of students that started it before graduating in 2013. They were: Joshua Callihan, Rosalva Chavez, Jonya Blahut, Risa Guysi and Holly Clarke.

That team won two first place awards in 2013 at the WERC: A Consortium for Environmental Education and Technology Development competition in Las Cruces, N.M. It's run by the Institute for Energy & the Environment (IEE).

When they tested the device it reduced the following harmful pollutants: carbon monoxide (CO) by 87 percent; nitrogen oxides (NOx) by 67 percent and particulate matter (PM) by 44 percent.

The device can be thought of as a three stage system. First, a filter captures the harmful pollutants. Then an ultra-fine spray of urea solution is dispersed into the exhaust stream. The urea spray primes the dirty air for the final stage, when a catalyst converts the harmful nitrogen oxide and ammonia into harmless nitrogen gas and water and releases them into the air.

The team that just graduated improved the original device in several ways:

They added a honeycombed substrate that solidifies the catalyst. Originally, the catalyst was in a powder form and was prone to blowing out when the lawnmower was being used. Harmful emissions will likely be further reduced because they will have more contact with the substrate. They changed the design of the device so it is essentially one piece of L-shaped stainless steel, instead of several pieces connected through fittings. Also, the new device doesn't stick out as far off the lawnmower. They eliminated the paper-thin quartz filter and replaced it with a stainless steel filter that should far outlast the quartz version. They added a muffler for sound reduction.

They expect the device would sell for about $30.

The incoming team will work to further improve the device. Possible areas for refinement including scaling it up so that it could be used with rider lawnmowers and develop a way to insulate it.


'/>"/>

Contact: Sean Nealon
sean.nealon@ucr.edu
951-827-1287
University of California - Riverside
Source:Eurekalert  

Related biology news :

1. Global Surgical Devices Market Growth Driven by Improving Standards of Living and Longer Life Expectancies, Research Shows
2. Medical device, health professionals attend first national conference on value-driven engineering
3. NJIT professor awarded patent today for new desalination devices, more
4. Tattoo-like devices for wireless pregnancy monitoring
5. Nowhere to hide: New device sees bacteria behind the eardrum
6. Pilot Results Move GHX Closer to Delivery of Healthcare Industrys First Implantable Device Supply Chain Solution
7. A millimeter-scale, wirelessly powered cardiac device
8. Medical devices powered by the ear itself
9. Stryker Chooses Wineman Technology for Medical Device Test Equipment and Software
10. Simplifying heart surgery with stretchable electronics devices
11. Nanotech device mimics dogs nose to detect explosives
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Device eliminates 93 percent of lawnmower pollutant
(Date:12/6/2016)... , Dec. 6, 2016 Securus ... justice technology solutions for public safety, investigation, corrections ... jointly announced today a five (5) year funding ... agreement to expand the rehabilitation and reentry support ... PEP History Established in 2004, the Prison Entrepreneurship ...
(Date:11/30/2016)... CHICAGO , Nov. 30, 2016  higi ... a new partnership initiative targeting national brands, industry ... and reward their respective audiences for taking steps ... Since its inception in 2012, higi has built ... US, impacting over 38 million people who have ...
(Date:11/24/2016)... 23, 2016 Cercacor today introduced Ember TM ... trainers non-invasively measure hemoglobin, Oxygen Content, Oxygen ... Respiration Rate in approximately 30 seconds. Smaller than a ... immediate access to key data about their bodies to ... regimen. Hemoglobin carries oxygen to muscles. ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... ... December 08, 2016 , ... Lajollacooks4u, San Diego’s premier team ... for team building events, new program offerings and company expansion. , This ... year to include groups of over 30 people. Ever since, Lajollacooks4u has seen significant ...
(Date:12/8/2016)... India , December 8, 2016 ... a comprehensive analysis, titled Global Amyloglucosidase Industry 2016 Market Research ... classification, application, and industry chain overview are all covered in ... SWOT analysis, and investment return analysis of the Amyloglucosidase industry. ... , , ...
(Date:12/8/2016)... , Dec. 8, 2016 Eurofins announces the appointment of ... President of Eurofins Scientific Inc. (ESI). Mr. Murray ... proven professional and entrepreneurial experience in leading international business teams. As ... food testing market to uphold Eurofins, status as the global leader ... , ...
(Date:12/8/2016)... England , December 8, 2016 ... das Unternehmen für Molekulargenetik, erweitert seine Palette an ... myPanel™ NGS Custom FH Panels, das ein schnelles ... (FH) ermöglicht. Das Panel bietet eine Erkennung von ... Variations (CNV) mit einem einzigen kleinen Panel und ...
Breaking Biology Technology: