東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

The Effects of Vermifiltration on Ga...

Lai, Ellen.

FindBook

Google Book

Amazon

博客來

The Effects of Vermifiltration on Gaseous Emissions and Microbial Communities from Dairy Wastewater.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The Effects of Vermifiltration on Gaseous Emissions and Microbial Communities from Dairy Wastewater./
作者:	Lai, Ellen.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:	81 p.
附註:	Source: Masters Abstracts International, Volume: 56-06.
Contained By:	Masters Abstracts International56-06(E).
標題:	Animal sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10286077
ISBN:	9780355151954

The Effects of Vermifiltration on Gaseous Emissions and Microbial Communities from Dairy Wastewater.
Lai, Ellen.

The Effects of Vermifiltration on Gaseous Emissions and Microbial Communities from Dairy Wastewater. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 81 p.

Source: Masters Abstracts International, Volume: 56-06.

Thesis (M.S.)--University of California, Davis, 2017.

This item is not available from ProQuest Dissertations & Theses.

Dairy lagoon water contains high concentrations of nitrogen (N), which has the potential to pollute groundwater and the atmosphere. To reduce N loading of an anaerobic lagoon at a commercial dairy, a pilot- project vermifilter was installed, which used earthworms embedded in woodchips to enhance removal of solids and contaminants. The objective was to mitigate nitrogenous gases, greenhouse gases (GHGs), volatile organic compounds (VOCs), and criteria pollutants from lagoon water using this new technology. Specifically, emissions of ammonia (NH3), nitrous oxide (N2O), carbon dioxide (CO 2), methane (CH4), hydrogen sulfide (H2S), and ethanol (EtOH) were measured using Thermo analyzers (Franklin, MA) contained inside a Mobile Agricultural Air Quality Lab. To assess whole filter system performance, emissions were measured from the untreated dairy lagoon water (LAG), as well as from the vermifilter's influent (INF), effluent (EFF), the top (TOP), and bottom (BOT) of the filter. Gases were measured using a flux chamber approach for LAG, INF, and EFF, a triangle wind tunnel for the TOP, and an inlet threaded to the bottom of the filter for BOT. Results for EFF versus INF showed a 90.2% reduction of NH3 emissions without increasing emission of N2O, CO2, CH4, H 2S, and EtOH from the rest of the vermifilter's system. To elucidate a biological basis for the observed emissions, we examined how the vermifilter affected microbial communities in the wastewater using next-generation sequencing of the 16S rRNA gene. The vermifilter increased the relative abundance of nitrifying and denitrifying microbes, which aligns with the reduction in NH 3 and lack of N2O emissions. The vermifilter's ability to reduce nutrient loading and subsequent NH3 emissions without producing other detrimental gaseous emissions needs to be replicated across more dairy operations. However, this new technology has the potential to be a viable candidate for N removal particularly in regions like the San Joaquin Valley of California, where dairy air and water quality issues are strictly regulated.

ISBN: 9780355151954Subjects--Topical Terms:

3174829
Animal sciences.

The Effects of Vermifiltration on Gaseous Emissions and Microbial Communities from Dairy Wastewater.
LDR:03204nmm a2200337 4500 001 2162267
005 20180928111501.5
008 190424s2017 ||||||||||||||||| ||eng d
020 $a 9780355151954
035 $a (MiAaPQ)AAI10286077
035 $a (MiAaPQ)ucdavis:17113
035 $a AAI10286077
040 $a MiAaPQ $c MiAaPQ
100 1 $a Lai, Ellen. $3 3350250
245 1 4 $a The Effects of Vermifiltration on Gaseous Emissions and Microbial Communities from Dairy Wastewater.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 81 p.
500 $a Source: Masters Abstracts International, Volume: 56-06.
500 $a Includes supplementary digital materials.
500 $a Adviser: Frank M. Mitloehner.
502 $a Thesis (M.S.)--University of California, Davis, 2017.
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a Dairy lagoon water contains high concentrations of nitrogen (N), which has the potential to pollute groundwater and the atmosphere. To reduce N loading of an anaerobic lagoon at a commercial dairy, a pilot- project vermifilter was installed, which used earthworms embedded in woodchips to enhance removal of solids and contaminants. The objective was to mitigate nitrogenous gases, greenhouse gases (GHGs), volatile organic compounds (VOCs), and criteria pollutants from lagoon water using this new technology. Specifically, emissions of ammonia (NH3), nitrous oxide (N2O), carbon dioxide (CO 2), methane (CH4), hydrogen sulfide (H2S), and ethanol (EtOH) were measured using Thermo analyzers (Franklin, MA) contained inside a Mobile Agricultural Air Quality Lab. To assess whole filter system performance, emissions were measured from the untreated dairy lagoon water (LAG), as well as from the vermifilter's influent (INF), effluent (EFF), the top (TOP), and bottom (BOT) of the filter. Gases were measured using a flux chamber approach for LAG, INF, and EFF, a triangle wind tunnel for the TOP, and an inlet threaded to the bottom of the filter for BOT. Results for EFF versus INF showed a 90.2% reduction of NH3 emissions without increasing emission of N2O, CO2, CH4, H 2S, and EtOH from the rest of the vermifilter's system. To elucidate a biological basis for the observed emissions, we examined how the vermifilter affected microbial communities in the wastewater using next-generation sequencing of the 16S rRNA gene. The vermifilter increased the relative abundance of nitrifying and denitrifying microbes, which aligns with the reduction in NH 3 and lack of N2O emissions. The vermifilter's ability to reduce nutrient loading and subsequent NH3 emissions without producing other detrimental gaseous emissions needs to be replicated across more dairy operations. However, this new technology has the potential to be a viable candidate for N removal particularly in regions like the San Joaquin Valley of California, where dairy air and water quality issues are strictly regulated.
590 $a School code: 0029.
650 4 $a Animal sciences. $3 3174829
650 4 $a Agriculture. $3 518588
650 4 $a Sustainability. $3 1029978
690 $a 0475
690 $a 0473
690 $a 0640
710 2 $a University of California, Davis. $b Animal Biology. $3 1669099
773 0 $t Masters Abstracts International $g 56-06(E).
790 $a 0029
791 $a M.S.
792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10286077