skip to main content
Ngôn ngữ:
Giới hạn tìm kiếm: Giới hạn tìm kiếm: Dạng tài nguyên Hiển thị kết quả với: Hiển thị kết quả với: Chỉ mục

Application of an in-situ soil sampler for assessing subsurface biogeochemical dynamics in a diesel-contaminated coastal site during soil flushing operations

Kwon, Man Jae ; O'Loughlin, Edward J ; Ham, Baknoon ; Hwang, Yunho ; Shim, Moojoon ; Lee, Soonjae

Journal of Environmental Management, 15 January 2018, Vol.206, pp.938-948 [Tạp chí có phản biện]

ISSN: 0301-4797 ; E-ISSN: 1095-8630 ; DOI: 10.1016/j.jenvman.2017.11.053

Toàn văn sẵn có

Phiên bản sẵn có
Trích dẫn Trích dẫn bởi
  • Nhan đề:
    Application of an in-situ soil sampler for assessing subsurface biogeochemical dynamics in a diesel-contaminated coastal site during soil flushing operations
  • Tác giả: Kwon, Man Jae ; O'Loughlin, Edward J ; Ham, Baknoon ; Hwang, Yunho ; Shim, Moojoon ; Lee, Soonjae
  • Chủ đề: In-Situ Sampler ; Diesel Contamination ; Seawater Intrusion ; Soil Flushing ; Microbial Community Dynamics ; Environmental Sciences ; Economics
  • Là 1 phần của: Journal of Environmental Management, 15 January 2018, Vol.206, pp.938-948
  • Mô tả: Subsurface biogeochemistry and contaminant dynamics during the remediation of diesel-contamination by in-situ soil flushing were investigated at a site located in a coastal region. An in-situ sampler containing diesel-contaminated soils separated into two size fractions (<0.063- and <2-mm) was utilized in two monitoring wells: DH1 (located close to the injection and extraction wells for in-situ soil flushing) and DH2 (located beyond sheet piles placed to block the transport of leaked diesel). Total petroleum hydrocarbon (TPH) concentrations and biogeochemical properties were monitored both in soil and groundwater for six months. A shift occurred in the groundwater type from Ca-HCO to Na-Cl due to seawater intrusion during intense pumping, while the concentrations of Ni, Cu, Co, V, Cr, and Se increased substantially following surfactant (TWEEN 80) injection. The in-situ sampler with fine particles was more sensitive to variations in conditions during the remedial soil flushing process. In both wells, soil TPH concentrations in the <0.063-mm fraction were much higher than those in the <2-mm fraction. Increases in soil TPH in DH1 were consistent with the expected outcomes following well pumping and surfactant injection used to enhance TPH extraction. However, the number of diesel-degrading microorganisms decreased after surfactant injection. 16S-rRNA gene-based analysis also showed that the community composition and diversity depended on both particle size and diesel contamination. The multidisciplinary approach to the contaminated site assessments showed that soil flushing with surfactant enhanced diesel extraction, but negatively impacted in-situ diesel biodegradation as well as groundwater quality. The results also suggest that the in-situ sampler can be an effective monitoring tool for subsurface biogeochemistry as well as contaminant dynamics.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0301-4797 ; E-ISSN: 1095-8630 ; DOI: 10.1016/j.jenvman.2017.11.053

Đang tìm Cơ sở dữ liệu bên ngoài...