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Simultaneous Wastewater Treatment and Poplar Biomass Production: Treatment Performance and Microbial-Mediated Nitrogen Cycling
Simultaneous Wastewater Treatment and Poplar Biomass Production: Treatment Performance and Microbial-Mediated Nitrogen Cycling
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151951
- ISBN
- 9798383225530
- DDC
- 576
- 저자명
- Kargol, Abigail.
- 서명/저자
- Simultaneous Wastewater Treatment and Poplar Biomass Production: Treatment Performance and Microbial-Mediated Nitrogen Cycling
- 발행사항
- [Sl] : University of Washington, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 147 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-01, Section: B.
- 주기사항
- Advisor: Gough, Heidi.
- 학위논문주기
- Thesis (Ph.D.)--University of Washington, 2024.
- 초록/해제
- 요약As demand for clean water increases, it is important to employ strategies to preserve both water quality and quantity. One strategy is the use of treated wastewater for irrigation, which can also serve as a wastewater treatment mechanism. Poplar trees and associated soil microorganisms remove pollutants from the irrigation water and the nutrient inputs increase crop growth. While treatment performance in wastewater infiltration systems has been studied, the contribution of the soil microbial community is not well-understood. We aimed to study nitrogen removal performance and biomass production in a poplar-planted wastewater infiltration system and assess impacts on microbial community structure and function. Reactors, along with bare-soil controls, were irrigated with synthetic wastewater effluent with increasing nitrogen concentrations for 18 months. Experiments were conducted each season, and soil samples were collected after each experiment. Soil DNA extracts were sequenced with 16S third-generation nanopore sequencing to examine community composition and droplet digital PCR was used to quantify key nitrogen cycling genes. Across all seasons, significant nitrate and total nitrogen removal was observed in planted reactors, while performance of unplanted reactors decreased in the winter months and under high nitrogen loads, highlighting the importance of poplars in taking up nitrogen and providing organic carbon. Microbial community diversity was not impacted by exposure to low-strength wastewater, but statistical visualization suggested differences in key microbial groups between reactors with and without trees. Nitrogen cycling in planted and unplanted soils was altered by wastewater. Nitrification was impacted at the gene level, with wastewater irrigated reactors having higher abundance of amoA, while denitrification was impacted at the level of activity, with increased denitrification potential in soils treated with higher nitrogen and organic matter loads. Compared to control reactors receiving tap water, poplars irrigated with wastewater produced 3 times more aboveground biomass, and an economic evaluation showed that establishing tertiary treatment wastewater infiltration systems for bioenergy production and water recovery (WISER) could produce substantial profits for wastewater treatment facilities via the sale of recovered water. These results supported the potential for year-round operation of infiltration systems for treatment and biomass production and highlighted the importance of vegetation for optimal treatment performance. Impacts to the soil community were minimal and served to enhance treatment without impacting overall community structure and function. This work will help inform the design and operation of WISER, providing opportunities for inexpensive tertiary treatment and the expansion of the bioeconomy.
- 일반주제명
- Microbiology
- 일반주제명
- Nanoscience
- 일반주제명
- Nutrition
- 키워드
- Hybrid poplar
- 키워드
- Wastewater
- 키워드
- Nitrification
- 기타저자
- University of Washington Environmental and Forest Science
- 기본자료저록
- Dissertations Abstracts International. 86-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211151951
■006m o d
■007cr#unu||||||||
■020 ▼a9798383225530
■035 ▼a(MiAaPQ)AAI31328322
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a576
■1001 ▼aKargol, Abigail.
■24510▼aSimultaneous Wastewater Treatment and Poplar Biomass Production: Treatment Performance and Microbial-Mediated Nitrogen Cycling
■260 ▼a[Sl]▼bUniversity of Washington▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a147 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-01, Section: B.
■500 ▼aAdvisor: Gough, Heidi.
■5021 ▼aThesis (Ph.D.)--University of Washington, 2024.
■520 ▼aAs demand for clean water increases, it is important to employ strategies to preserve both water quality and quantity. One strategy is the use of treated wastewater for irrigation, which can also serve as a wastewater treatment mechanism. Poplar trees and associated soil microorganisms remove pollutants from the irrigation water and the nutrient inputs increase crop growth. While treatment performance in wastewater infiltration systems has been studied, the contribution of the soil microbial community is not well-understood. We aimed to study nitrogen removal performance and biomass production in a poplar-planted wastewater infiltration system and assess impacts on microbial community structure and function. Reactors, along with bare-soil controls, were irrigated with synthetic wastewater effluent with increasing nitrogen concentrations for 18 months. Experiments were conducted each season, and soil samples were collected after each experiment. Soil DNA extracts were sequenced with 16S third-generation nanopore sequencing to examine community composition and droplet digital PCR was used to quantify key nitrogen cycling genes. Across all seasons, significant nitrate and total nitrogen removal was observed in planted reactors, while performance of unplanted reactors decreased in the winter months and under high nitrogen loads, highlighting the importance of poplars in taking up nitrogen and providing organic carbon. Microbial community diversity was not impacted by exposure to low-strength wastewater, but statistical visualization suggested differences in key microbial groups between reactors with and without trees. Nitrogen cycling in planted and unplanted soils was altered by wastewater. Nitrification was impacted at the gene level, with wastewater irrigated reactors having higher abundance of amoA, while denitrification was impacted at the level of activity, with increased denitrification potential in soils treated with higher nitrogen and organic matter loads. Compared to control reactors receiving tap water, poplars irrigated with wastewater produced 3 times more aboveground biomass, and an economic evaluation showed that establishing tertiary treatment wastewater infiltration systems for bioenergy production and water recovery (WISER) could produce substantial profits for wastewater treatment facilities via the sale of recovered water. These results supported the potential for year-round operation of infiltration systems for treatment and biomass production and highlighted the importance of vegetation for optimal treatment performance. Impacts to the soil community were minimal and served to enhance treatment without impacting overall community structure and function. This work will help inform the design and operation of WISER, providing opportunities for inexpensive tertiary treatment and the expansion of the bioeconomy.
■590 ▼aSchool code: 0250.
■650 4▼aMicrobiology
■650 4▼aNanoscience
■650 4▼aNutrition
■653 ▼aHybrid poplar
■653 ▼aNanopore sequencing
■653 ▼aNutrient recovery
■653 ▼aWastewater
■653 ▼aNitrification
■690 ▼a0410
■690 ▼a0565
■690 ▼a0570
■71020▼aUniversity of Washington▼bEnvironmental and Forest Science.
■7730 ▼tDissertations Abstracts International▼g86-01B.
■790 ▼a0250
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162250▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
