Behavior and fate of Fe in the active bioremediation of acidic coal mine drainage

被引：0
|
作者：
Sheng Y. [1 ]
Wang G. [2 ,3 ]
Liu Y. [2 ]
Li G. [1 ]
机构：
[1] School of Environment, Tsinghua University, State Key Joint Laboratory of Environment Simulation and Pollution Control, Beijing
[2] School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing
[3] State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Beijing), Beijing
来源：
Earth Science Frontiers | 2018年 / 25卷 / 04期
关键词：
Acid mine drainage; Bioreactor; Fe(II) oxidation; Schwertmannite;
D O I：
10.13745/j.esf.sf.2018.6.1
中图分类号：
学科分类号：
摘要：
Biotic low-pH Fe(II) oxidation can be an effective component of the remediation system for acidic coal mine drainage. However, application of such system is limited because of uncertainties associated with Fe behavior and fate. By monitoring biogeochemical process at an acidic coal mine drainage site, we obtained enriched indigenous sediment microbes to explore the behavior and fate of Fe and other metals under microbial-mediated condition in a chemostatic bioreactor. As the results illustrate, transformation of Fe species was the major biogeochemical process both at field site and in a bioreactor. At pH<2.7, redox reactions were more prone to produce soluble Fe(III); whereas, at 2.7<pH<4.2, insoluble Fe(III) species were preferentially produced. Under acidic conditions, no significant transformation involving other metal ions was detected in active bioreactors. The sediments generated in the reactor were mainly composed of schwertmannite and goethite, and mineralogical transformation moved towards to Na-Jarosite with increasing addition of acid or base. Our study helps to guide application of similar microbial processes to remediate contaminated waters and provides scientific significance for the sludge recovery and reuse effort. © 2018, Editorial Office of Earth Science Frontiers. All right reserved.
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页码：299 / 306
页数：7
相关论文
共 25 条
  • [1] Feng Q., Li T., Qian B., Et al., Chemical characteristics and utilization of coal mine drainage in China, Mine Water and the Environment, 33, 3, pp. 276-286, (2014)
  • [2] Kirby C.S., Brady J.A.E., Field determination of Fe<sup>2+</sup> oxidation rates in acid mine drainage using a continuously-stirred tank reactor, Applied Geochemistry, 13, 4, pp. 509-520, (1998)
  • [3] Cravotta C.A., Dissolved metals and associated constituents in abandoned coal-mine discharges, Pennsylvania, USA. Part 1: Constituent Quantities and correlations, Applied Geochemistry, 23, 2, pp. 166-202, (2008)
  • [4] Larson L.N., Sanchez-Espana J., Burgos W., Rates of low-pH biological Fe(II) oxidation in the Appalachian Bituminous Coal Basin and the Iberian Pyrite Belt, Applied Geochemistry, 47, pp. 85-98, (2014)
  • [5] Desa T., Brown J., Burgos W., Laboratory and field-scale evaluation of low-pH Fe(II) oxidation at Hughes Borehole, Portage, Pennsylvania, Mine Water and the Environment, 29, 4, pp. 239-247, (2010)
  • [6] Brown J.F., Jones D.S., Mills D.B., Et al., Application of a depositional facies model to an acid mine drainage site, Applied and Environmental Microbiology, 77, 2, pp. 545-554, (2011)
  • [7] Burgos W.D., Borch T., Troyer L.D., Et al., Schwertmannite and Fe oxides formed by biological low-pH Fe(II) oxidation versus abiotic neutralization: impact on trace metal sequestration, Geochimica et Cosmochimica Acta, 76, pp. 9-44, (2012)
  • [8] Jones D.S., Kohl C., Grettenberger C., Et al., Geochemical niches of iron-oxidizing acidophiles in acidic coal mine drainage, Applied and Environmental Microbiology, 81, 4, pp. 1242-1250, (2015)
  • [9] Sheng Y., Bibby K., Grettenberger C., Et al., Geochemical and temporal influences on the enrichment of acidophilic iron-oxidizing bacterial communities, Applied and Environmental Microbiology, 82, 12, pp. 3611-3621, (2016)
  • [10] Sheng Y., Kaley B., Bibby K., Et al., Bioreactors for low-pH iron(II) oxidation remove considerable amounts of total iron, RSC Advances, 7, pp. 35962-35972, (2017)
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