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Long-Term AS/SVE for Petroleum Removal in Low-Permeability Piedmont Saprolite



Details

  • Personal Author:
  • Description:
    A 3.5-year pilot test of air sparging/soil vapor extraction (AS/SVE) was carried out to determine whether the heterogeneity of the Piedmont saprolite would allow adequate soil vapor velocities and effective vapor-phase extraction rates for petroleum hydrocarbon (PHC) remediation. The objectives were to compare: (1) the effectiveness of pulsed SVE versus pulsed AS/SVE operation; (2) benzene, toluene, ethylbenzene, and xylene (BTEX) versus PHC removal; and (3) biological versus physical removal of PHC. Stack exhaust gas, SVE wells, and soil vapor probes were monitored for total combustible hydrocarbons (TCH), BTEX, O2, CO2, temperature, and flow rate using handheld meters and gas chromatography. The majority of contaminant recovered was removed from the vadose zone via SVE. BTEX and TCH were both effectively removed from the more-permeable and highly contaminated unsaturated-saturated zone interface. Bioremediation accounted for 23% of total removal. Overall, the AS/SVE system physically removed an estimated 18,800 kg of PHC and 5,300 g of BTEX with an average rate of 70 kg d-1 and 0.4 g d-1, respectively, which was consistent with other AS/SVE studies in sandy media. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0733-9372
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    134-144
  • Volume:
    127
  • Issue:
    2
  • NIOSHTIC Number:
    nn:20057715
  • Citation:
    J Environ Eng 2001 Feb; 127(2):134-144
  • Contact Point Address:
    C. Marjorie Aelion, Dept. of Envir. Health Sci. and Marine Sci. Prog., Univ. of South Carolina, Columbia, SC
  • Email:
    aelionm@sc.edu
  • Federal Fiscal Year:
    2001
  • Performing Organization:
    Arnold School of Public Health, University of South Carolina, Columbia
  • Peer Reviewed:
    True
  • Start Date:
    19940701
  • Source Full Name:
    Journal of Environmental Engineering
  • End Date:
    20040630
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:fcd51db08e51f1e5aaf564d98102fa4a4d31875db0d61c327eb4ac47eac727d5a51cb1cac88c3a34723c4a82941a15e78010965708f49f3423de415fdb5bc948
  • Download URL:
  • File Type:
    Filetype[PDF - 253.35 KB ]
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