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Biogas production via anaerobic dige...

Macias-Corral, Maritza Argelia.

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Biogas production via anaerobic digestion of high-solids livestock manure.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Biogas production via anaerobic digestion of high-solids livestock manure./
Author:	Macias-Corral, Maritza Argelia.
Description:	289 p.
Notes:	Advisers: Zohrab A. Samani; Adrian T. Hanson.
Contained By:	Dissertation Abstracts International68-07B.
Subject:	Agriculture, Agronomy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3273250
ISBN:	9780549131663

Biogas production via anaerobic digestion of high-solids livestock manure.
Macias-Corral, Maritza Argelia.

Biogas production via anaerobic digestion of high-solids livestock manure. - 289 p.

Advisers: Zohrab A. Samani; Adrian T. Hanson.

Thesis (Ph.D.)--New Mexico State University, 2007.

Livestock manure is one of the main environmental problems resulting from agricultural activities. Untreated manure may lead to contamination of surface and ground waters, air, and soil. Recently, public attention has been centered on uncontrolled methane emissions contributing to global warming and human health threats linked with the presence of pathogens and other emerging contaminants.

ISBN: 9780549131663Subjects--Topical Terms:

1018679
Agriculture, Agronomy.

Biogas production via anaerobic digestion of high-solids livestock manure.
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020 $a 9780549131663
035 $a (UMI)AAI3273250
035 $a AAI3273250
040 $a UMI $c UMI
100 1 $a Macias-Corral, Maritza Argelia. $3 1264673
245 1 0 $a Biogas production via anaerobic digestion of high-solids livestock manure.
300 $a 289 p.
500 $a Advisers: Zohrab A. Samani; Adrian T. Hanson.
500 $a Source: Dissertation Abstracts International, Volume: 68-07, Section: B, page: 4184.
502 $a Thesis (Ph.D.)--New Mexico State University, 2007.
520 $a Livestock manure is one of the main environmental problems resulting from agricultural activities. Untreated manure may lead to contamination of surface and ground waters, air, and soil. Recently, public attention has been centered on uncontrolled methane emissions contributing to global warming and human health threats linked with the presence of pathogens and other emerging contaminants.
520 $a The aim of this research was to assess anaerobic digestion (AD) as an option for the treatment of livestock manure. An alternative design feasible to handle high-solids wastes was used to produce biogas and soil amendment. The principal feedstock utilized for these studies was dairy manure with total solids concentration from 19 to 85%, for fresh screened manure and aged-dry waste, respectively. For the duration of these studies, approximately 25,000 lbs of wet manure were processed. Co-digestion with other sources of organic materials was also studied. Biogas and solid residual were produced via anaerobic conversion. Methane concentration in the biogas from the methanogenic reactors was approximately 70% by volume. In general, compared to compost produced aerobically, the solid residual was richer in plant nutrients (nitrogen and phosphorus).
520 $a Results of this research showed that the methanogenic reactors are very efficient in consuming biodegradable organics with 97--99% chemical oxygen demand (COD) removal. This outcome has major significance as it shows that the biodegradable fraction of COD was completely utilized by anaerobic bacteria and converted to methane. This finding can lead to improvement of the system for methane production by reducing the uncertainty regarding the quantity of substrate to feed the methane reactors.
520 $a A mathematical model was developed for the two-phase system. Mass balances were done in terms of volatile solids (VS) and volatile fatty acids (VFA) as they provide more accurate information than total solids (TS) and COD regarding biogas production. Mathematical expressions as a function of time were developed to determine the content of volatile solids in the solid phase reactor and volatile fatty acids in the solid phase and liquid phase reactors. These formulas are a tool to predict biogas production in the system as a function of time.
590 $a School code: 0143.
650 4 $a Agriculture, Agronomy. $3 1018679
650 4 $a Engineering, Environmental. $3 783782
690 $a 0285
690 $a 0775
710 2 $a New Mexico State University. $3 783784
773 0 $t Dissertation Abstracts International $g 68-07B.
790 $a 0143
790 1 0 $a Hanson, Adrian T., $e advisor
790 1 0 $a Samani, Zohrab A., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3273250