Document Detail


Developing selenium-enriched animal feed and biofuel from canola planted for managing Se-laden drainage waters in the westside of central California.
MedLine Citation:
PMID:  20734619     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We studied the reuse of selenium (Se)-laden effluent for producing canola (Brassica napus) and subsequent bioproducts in central California. Canola was irrigated with poor quality waters [electrical conductivity (EC) of approximately 5 dS m(-1) sulfate-salinity, 5 mg B L(-1), and 0.25 mg Se L(-1)]. Typical seed yields were 2.2 metric tons ha(-1). Seeds were processed for their oil, and transesterified to produce ASTM-quality biodiesel (BD) blends. The resulting Se-enriched seed cake meal (containing approximately 2 mg Se kg(-1) DM) was used in a dairy feed trial. Seventy-two Jersey and Holstein cows, 36 respectively, were fed Se-enriched canola meal as 6.2% of their daily feed ration for five weeks. Blood and milk samples were collected weekly and analyzed for total Se. This study showed that Se-enriched canola meal did not significantly increase total blood Se content in either cow breed. Milk Se concentrations did, however, significantly increase to safe levels of 59 microg Se L(-1) and 52 microg Se L(-1) in Jersey and Holstein cows, respectively. The production of BD 20 biofuels and Se-enriched feed meal from canola irrigated with poor quality waters may help sustain similar phytomanagement strategies under Se-rich conditions.
Authors:
G S Bañuelos; J Da Roche; J Robinson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of phytoremediation     Volume:  12     ISSN:  1522-6514     ISO Abbreviation:  Int J Phytoremediation     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-08-25     Completed Date:  2010-12-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101136878     Medline TA:  Int J Phytoremediation     Country:  United States    
Other Details:
Languages:  eng     Pagination:  243-54     Citation Subset:  IM    
Affiliation:
USDA-ARS 9611 S. Riverbend Ave, Parlier, CA 93648, USA. gary.banuelos@ars.usda.gov
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MeSH Terms
Descriptor/Qualifier:
Animal Feed / analysis*
Animals
Biodegradation, Environmental
Biofuels / analysis*
Brassica napus / growth & development*
California
Cattle
Dairying
Drainage, Sanitary*
Milk / chemistry
Selenium / analysis*,  blood
Waste Disposal, Fluid*
Water Purification*
Chemical
Reg. No./Substance:
0/Biofuels; 7782-49-2/Selenium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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