Reductive Cr(VI) Removal under Different Reducing and Electron Donor Conditions-A Soil Microcosm Study

被引:0
作者
Galani, Andriani [1 ]
Noutsopoulos, Constantinos [1 ]
Anastopoulou, Petra [1 ]
Varouxaki, Alexia [1 ]
Mamais, Daniel [1 ]
机构
[1] Natl Tech Univ Athens, Sanit Engn Lab, Dept Water Resources & Environm Engn, Sch Civil Engn, Iroon Polytech 9, Athens 15780, Greece
关键词
Cr(VI) reduction; organic and inorganic electron donors; anaerobic conditions; anoxic conditions; sulfate-reducing conditions; CHROMIUM-CONTAMINATED WATER; HEXAVALENT CHROMIUM; WASTE-WATER; BIOLOGICAL TREATMENT; CHROMATE REDUCTION; NITRATE REDUCTION; HYDROGEN-SULFIDE; SULFATE; IRON; GROUNDWATER;
D O I
10.3390/w14142179
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Increased groundwater and soil contamination by hexavalent chromium have led to the employment of a variety of detoxification methods. Biological remediation of Cr(VI) polluted aquifers is an eco-friendly method that can be performed in situ by stimulating the indigenous microbial population with organic and inorganic electron donors. In order to study the effect of different redox conditions on microbial remediated Cr(VI) reduction to Cr(III), microcosm experiments were conducted under anaerobic, anoxic, and sulfate-reducing conditions and at hexavalent chromium groundwater concentrations in the 0-3000 mu g/L range, with groundwater and soil collected from an industrial area (Inofyta region). As electron donors, molasses, emulsified vegetable oil (EVO), and FeSO4 were employed. To quantitatively describe the degradation kinetics of Cr(VI), pseudo-first-order kinetics were adopted. The results indicate that an anaerobic system dosed with simple or complex external organic carbon sources can lead to practically complete Cr(VI) reduction to Cr(III), while the addition of Fe2+ can further increase Cr(VI) removal rate significantly. Furthermore, Cr(VI) microbial reduction is possible in the presence of NO3- at rates comparable to anaerobic Cr(VI) microbial reduction, while high sulfate concentrations have a negative effect on Cr(VI) bioreduction rates in comparison to lower sulfate concentrations.
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页数:18
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共 92 条
  • [1] Global diagnosis of nitrate pollution in groundwater and review of removal technologies
    Abascal, E.
    Gomez-Coma, L.
    Ortiz, I
    Ortiz, A.
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2022, 810
  • [2] FLUORESCENT-OLIGONUCLEOTIDE PROBING OF WHOLE CELLS FOR DETERMINATIVE, PHYLOGENETIC, AND ENVIRONMENTAL-STUDIES IN MICROBIOLOGY
    AMANN, RI
    KRUMHOLZ, L
    STAHL, DA
    [J]. JOURNAL OF BACTERIOLOGY, 1990, 172 (02) : 762 - 770
  • [3] [Anonymous], 1992, 7196A USEPA, P1
  • [4] APHA, 1995, Standard methods for the examination of water and wastewater, V9th
  • [5] Is dietary nitrate/nitrite exposure a risk factor for development of thyroid abnormality? A systematic review and meta-analysis
    Bahadoran, Zahra
    Mirmiran, Parvin
    Ghasemi, Asghar
    Kabir, Ali
    Azizi, Fereidoun
    Hadaegh, Farzad
    [J]. NITRIC OXIDE-BIOLOGY AND CHEMISTRY, 2015, 47 : 65 - 76
  • [6] METHANOGENS - RE-EVALUATION OF A UNIQUE BIOLOGICAL GROUP
    BALCH, WE
    FOX, GE
    MAGRUM, LJ
    WOESE, CR
    WOLFE, RS
    [J]. MICROBIOLOGICAL REVIEWS, 1979, 43 (02) : 260 - 296
  • [7] Occurrence of hexavalent chromium in ground water in the western Mojave Desert, California
    Ball, JW
    Izbicki, JA
    [J]. APPLIED GEOCHEMISTRY, 2004, 19 (07) : 1123 - 1135
  • [8] Biogeochemical Redox Processes and their Impact on Contaminant Dynamics
    Borch, Thomas
    Kretzschmar, Ruben
    Kappler, Andreas
    Van Cappellen, Philippe
    Ginder-Vogel, Matthew
    Voegelin, Andreas
    Campbell, Kate
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (01) : 15 - 23
  • [9] Redox Interactions Between Cr(VI) and Fe(II) in Bioreduced Biotite and Chlorite
    Brookshaw, Diana R.
    Coker, Victoria S.
    Lloyd, Jonathan R.
    Vaughan, David J.
    Pattrick, Richard A. D.
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2014, 48 (19) : 11337 - 11342
  • [10] Microbial anaerobic Fe(II) oxidation - Ecology, mechanisms and environmental implications
    Bryce, Casey
    Blackwell, Nia
    Schmidt, Caroline
    Otte, Julia
    Huang, Yu-Ming
    Kleindienst, Sara
    Tomaszewski, Elizabeth
    Schad, Manuel
    Warter, Viola
    Peng, Chao
    Byrne, James M.
    Kappler, Andreas
    [J]. ENVIRONMENTAL MICROBIOLOGY, 2018, 20 (10) : 3462 - 3483