Featured Research

from universities, journals, and other organizations

Keeping The Dust Down When Separating The Chaff From The Nuts

Date:
February 1, 2008
Source:
US Department of Agriculture
Summary:
Agricultural scientists are developing an add-on device to control dust emissions from nut harvesters. Researchers are testing a prototype device that uses centrifugal force to trap soil and bits of leaves and sticks so the harvester emits cleaner air.

Researchers are working to develop an add-on device to control dust emissions from nut harvesters.
Credit: Photo by Scott Bauer

The Agricultural Research Service (ARS) has signed a cooperative research and development agreement with Flory Industries of Salida, Calif., to develop an add-on device to control dust emissions from nut harvesters.

Related Articles


Researchers Derek Whitelock, Carlos Armijo and Ed Hughs at ARS’ Southwestern Cotton Ginning Research Laboratory in Mesilla Park, N.M., and Michael Buser in ARS’ Cotton Production and Processing Research Unit at Lubbock, Texas—working with Flory Industries engineers Seth Richmond and Mike Flora—are testing a prototype device that uses centrifugal force to trap soil and bits of leaves and sticks so the harvester emits cleaner air.

Mechanical shakers grab trees and shake out nuts—mainly walnuts, almonds and pecans. The nuts, plus unwanted leaves and twigs, fall to the ground and are swept into windrows. Pick-up machines then scoop up the windrows. Air flowing through the harvester separates the nuts from debris that also includes soil particles. The debris blows out into the air through a side exhaust as the nuts are conveyed into a cart pulled behind the harvester.

The prototype is trapping the debris and some dust, but it needs more work, primarily because of the difficulty presented by the 12,000-cubic-foot-a-minute airflow through the harvester and out the exhaust. Whitelock modeled the device after the large cyclone dust collectors attached to cotton gin exhausts.

But a tree nut harvester can't afford to have the huge cyclone that would normally handle that much airflow in cotton gin exhaust. Unlike a stationary cyclone attached to the outside exhaust of a cotton gin, the tree nut harvester has to be driven under the low tree canopies of many orchards.

The same harvester, with modifications, is used throughout the country to harvest various tree nuts, mainly almonds and walnuts in California and pecans in Georgia, Texas, New Mexico and Oklahoma.

This research is part of ARS' national program to develop agricultural technologies that minimize contamination of the air by dust particles from food and fiber production.


Story Source:

The above story is based on materials provided by US Department of Agriculture. Note: Materials may be edited for content and length.


Cite This Page:

US Department of Agriculture. "Keeping The Dust Down When Separating The Chaff From The Nuts." ScienceDaily. ScienceDaily, 1 February 2008. <www.sciencedaily.com/releases/2008/01/080126083601.htm>.
US Department of Agriculture. (2008, February 1). Keeping The Dust Down When Separating The Chaff From The Nuts. ScienceDaily. Retrieved March 4, 2015 from www.sciencedaily.com/releases/2008/01/080126083601.htm
US Department of Agriculture. "Keeping The Dust Down When Separating The Chaff From The Nuts." ScienceDaily. www.sciencedaily.com/releases/2008/01/080126083601.htm (accessed March 4, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Wednesday, March 4, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Tourists Visit Rare Grey Whales in Mexico

Raw: Tourists Visit Rare Grey Whales in Mexico

AP (Mar. 4, 2015) Once nearly extinct, grey whales now migrate in their thousands to Mexico&apos;s Vizcaino reserve in Baja California, in search of warmer waters to mate and give birth. Tourists flock to the reserve to see the whales, measuring up to 49 feet long. (March 4) Video provided by AP
Powered by NewsLook.com
Australian Museum Shares Terrifying Goblin Shark With the World

Australian Museum Shares Terrifying Goblin Shark With the World

Buzz60 (Mar. 4, 2015) The Australian Museum has taken in its fourth-ever goblin shark, a rare fish with an electricity-sensing snout and &apos;alien-like&apos; jaw. Mike Janela (@mikejanela) takes a look. Video provided by Buzz60
Powered by NewsLook.com
Prince William Calls for Unified Effort Against Illegal Wildlife Trade

Prince William Calls for Unified Effort Against Illegal Wildlife Trade

Reuters - Entertainment Video Online (Mar. 4, 2015) Britain&apos;s Prince William pledges to unite against illegal wildlife trade on the final day of his visit to China. Rough cut - no reporter narration Video provided by Reuters
Powered by NewsLook.com
Rare Goblin Shark Found in Australia

Rare Goblin Shark Found in Australia

AFP (Mar. 3, 2015) A goblin shark, a rare sea creature described as an &apos;alien of the deep&apos; is found off Australia and delivered to the Australian Museum in Sydney. Duration: 01:25 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins