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

Life Cycle Assessment of the Cultiva...

Jordan, Raquel,

FindBook

Google Book

Amazon

博客來

Life Cycle Assessment of the Cultivation of Lettuce in a Hydroponic System Using the Nutrient Film Technique /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Life Cycle Assessment of the Cultivation of Lettuce in a Hydroponic System Using the Nutrient Film Technique // Raquel Jordan.
作者:	Jordan, Raquel,
面頁冊數:	1 electronic resource (117 pages)
附註:	Source: Masters Abstracts International, Volume: 87-04.
Contained By:	Masters Abstracts International87-04.
標題:	Greenhouses. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=32287901
ISBN:	9798297668553

Life Cycle Assessment of the Cultivation of Lettuce in a Hydroponic System Using the Nutrient Film Technique /
Jordan, Raquel,

Life Cycle Assessment of the Cultivation of Lettuce in a Hydroponic System Using the Nutrient Film Technique /Raquel Jordan. - 1 electronic resource (117 pages)

Source: Masters Abstracts International, Volume: 87-04.

Hydroponic systems are an emerging method of soilless crop cultivation typically done inside a greenhouse where nutrients are delivered dissolved in water rather than being supplied from the soil. Potential benefits of hydroponic systems include reduced irrigation requirements, higher crop yield per area, and the ability to grow crops year-round in nontraditional areas such as urban settings, cold climates, and sites with contaminated soil. However, hydroponic systems tend to have high energy requirements for lighting and climate control, which can yield significant environmental impacts. To explore the environmental impacts of cultivating lettuce in a nutrient film technique (NFT) hydroponic system, a life cycle assessment (LCA) was conducted based on a case study of a greenhouse farming operation that agreed to provide data for the project. The functional unit was 1 year of production at the greenhouse, or 32603 kg of lettuce. The system boundary was from raw material extraction to when the finished product arrived at the distributor. OpenLCA was used along with the ecoinvent database for modeling. ReCiPe 2016 v1.03, midpoint (H), was the impact assessment method used. The results of the impact assessment for one year of lettuce production were 1.90 x 10 5 kg CO 2 eq for climate change, 2.27 x 10 4 m 2 a crop eq for land use, 1800 m 3 for water use, and 44 kg P eq for freshwater eutrophication. Electricity for lighting and climate control (Scope II), and natural gas for heating (Scope I) were the overwhelming contributors to climate change. Land use was mainly from the upstream impacts of cardboard production for packaging, followed by the direct land area that greenhouse facility occupies. Water use was 56% from water loss from the plant via transpiration. Upstream impact from electricity was the second highest contributor to water use. Freshwater eutrophication was driven by electricity. Coal is used in the electricity grid in the Southeast region of the United States, and the treatment of waste from coal mining has freshwater eutrophication impacts. When compared to traditional open-field growth of lettuce, the hydroponic system at the greenhouse facility had higher impacts in all four categories considered. Results of previous studies vary due to differing system boundaries, locations, and electricity grids. The results of the LCA for the greenhouse agree with some studies and disagree with others. The results confirm that electricity for climate control and lighting is a hot spot for the hydroponic cultivation of crops, and that using more renewable energy can decrease the environmental impacts of hydroponics. Further research should be done to refine the results and to be representative of greenhouses of other sizes and locations.

English

ISBN: 9798297668553Subjects--Topical Terms:

1530611
Greenhouses.

Life Cycle Assessment of the Cultivation of Lettuce in a Hydroponic System Using the Nutrient Film Technique /
LDR:04200nmm a22004333i 4500 001 2438155
005 20251130221842.5
006 m o d
007 cr|nu||||||||
008 261011s2025 miu||||||m |||||||eng d
020 $a 9798297668553
035 $a (MiAaPQD)AAI32287901
035 $a (MiAaPQD)Clemsonalltheses5610
035 $a AAI32287901
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Jordan, Raquel, $e author. $3 3829376
245 1 0 $a Life Cycle Assessment of the Cultivation of Lettuce in a Hydroponic System Using the Nutrient Film Technique / $c Raquel Jordan.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2025
300 $a 1 electronic resource (117 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 87-04.
500 $a Advisors: Carbajales-Dale, Michael Committee members: Ladner, David; Adelberg, Jeffrey.
502 $b M.S. $c Clemson University $d 2025.
520 $a Hydroponic systems are an emerging method of soilless crop cultivation typically done inside a greenhouse where nutrients are delivered dissolved in water rather than being supplied from the soil. Potential benefits of hydroponic systems include reduced irrigation requirements, higher crop yield per area, and the ability to grow crops year-round in nontraditional areas such as urban settings, cold climates, and sites with contaminated soil. However, hydroponic systems tend to have high energy requirements for lighting and climate control, which can yield significant environmental impacts. To explore the environmental impacts of cultivating lettuce in a nutrient film technique (NFT) hydroponic system, a life cycle assessment (LCA) was conducted based on a case study of a greenhouse farming operation that agreed to provide data for the project. The functional unit was 1 year of production at the greenhouse, or 32603 kg of lettuce. The system boundary was from raw material extraction to when the finished product arrived at the distributor. OpenLCA was used along with the ecoinvent database for modeling. ReCiPe 2016 v1.03, midpoint (H), was the impact assessment method used. The results of the impact assessment for one year of lettuce production were 1.90 x 10 5 kg CO 2 eq for climate change, 2.27 x 10 4 m 2 a crop eq for land use, 1800 m 3 for water use, and 44 kg P eq for freshwater eutrophication. Electricity for lighting and climate control (Scope II), and natural gas for heating (Scope I) were the overwhelming contributors to climate change. Land use was mainly from the upstream impacts of cardboard production for packaging, followed by the direct land area that greenhouse facility occupies. Water use was 56% from water loss from the plant via transpiration. Upstream impact from electricity was the second highest contributor to water use. Freshwater eutrophication was driven by electricity. Coal is used in the electricity grid in the Southeast region of the United States, and the treatment of waste from coal mining has freshwater eutrophication impacts. When compared to traditional open-field growth of lettuce, the hydroponic system at the greenhouse facility had higher impacts in all four categories considered. Results of previous studies vary due to differing system boundaries, locations, and electricity grids. The results of the LCA for the greenhouse agree with some studies and disagree with others. The results confirm that electricity for climate control and lighting is a hot spot for the hydroponic cultivation of crops, and that using more renewable energy can decrease the environmental impacts of hydroponics. Further research should be done to refine the results and to be representative of greenhouses of other sizes and locations.
546 $a English
590 $a School code: 0050
650 4 $a Greenhouses. $3 1530611
650 4 $a Sustainable agriculture. $3 647177
650 4 $a Electricity distribution. $3 3562889
650 4 $a Climate change. $2 bicssc $3 2079509
650 4 $a Fertilizers. $3 656382
650 4 $a Natural gas. $3 668611
650 4 $a Agriculture. $3 518588
650 4 $a Agronomy. $3 2122783
650 4 $a Electrical engineering. $3 649834
650 4 $a Energy. $3 876794
650 4 $a Horticulture. $3 555447
650 4 $a Petroleum engineering. $3 566616
690 $a 0404
690 $a 0473
690 $a 0285
690 $a 0544
690 $a 0791
690 $a 0471
690 $a 0765
710 2 $a Clemson University. $e degree granting institution. $3 3765937
720 1 $a Carbajales-Dale, Michael $e degree supervisor.
773 0 $t Masters Abstracts International $g 87-04.
790 $a 0050
791 $a M.S.
792 $a 2025
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=32287901