2009
DOI: 10.1016/j.apgeochem.2008.11.001
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Redox geochemistry in organic-rich sediments of a constructed wetland treating colliery spoil leachate

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Cited by 8 publications
(3 citation statements)
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“…Overall, the chemical reactions result in sulfate reduction, the precipitation of metal sulfides into surface sediments, and an increase in pH and alkalinity (Morrison and Aplin 2009). Other wetland processes include sedimentation, physical entrapment of solid particulates and colloids, removal of metals through adsorption onto and coprecipitation with wetland particulates, complexation with organic materials, and plant assimilation (Ledin and Pedersen 1996;Walton-Day 1999).…”
Section: Subsurface Flow or Anaerobic Wetlandmentioning
confidence: 99%
“…Overall, the chemical reactions result in sulfate reduction, the precipitation of metal sulfides into surface sediments, and an increase in pH and alkalinity (Morrison and Aplin 2009). Other wetland processes include sedimentation, physical entrapment of solid particulates and colloids, removal of metals through adsorption onto and coprecipitation with wetland particulates, complexation with organic materials, and plant assimilation (Ledin and Pedersen 1996;Walton-Day 1999).…”
Section: Subsurface Flow or Anaerobic Wetlandmentioning
confidence: 99%
“…Environment Maximum Fe(III) d (lM) Maximum depth (cm) Liang et al (1993) Coastal plain aquifer $40 $200 Luther et al (1996) Vegetate mid-salt marsh 1255 6-8 Koretsky et al (2006) Lake $250 10-20 Koretsky et al (2007) Fen $200 5-20 Koretsky et al (2008) Salt marsh: vegetated creek $700 15-45 Morrison and Aplin (2009) Artificial wetland $300 0-6 This work Blackwater estuary 996 7-8 Fig. 8.…”
Section: Referencementioning
confidence: 98%
“…de indústrias fortemente poluidoras já se remeter a 1964 (NIZOLI, LUIZ-SILVA, 2009). Essa lacuna precisa ser preenchida, já que em outros países, tomadas de decisão no sentido de controle de drenagem (BOMAN, ASTROM, FROJDO, 2008), dragagem de rios poluídos (PRICA et al, 2008), remediação de áreas impactadas ou ações de conservação e manejo de espécies (USEPA, 2005) e planícies alagadas (VAN DER GEEST, PAUMEN, 2008) costumam ser realizadas à luz de estudos dessa magnitude.Mesmo efluentes fortemente contaminados por metais, como drenagem ácida de minas de carvão, podem ser tratados utilizando-se o conhecimento dos MES e SVA, aliados à tecnologia obtida em estudos de áreas alagadas (do inglês, wetlands) que se constituem em áreas inundadas contendo espécies vegetais, capazes de imobilizar metais entre outros contaminantes(MORRISON, APLIN, 2009). Os SVA podem exercer papel importante também na biodisponibilidade de metais provenientes de xisto(OGENDI et al, 2007), e até em áreas que recebiam lixívia de antigas minas de mercúrio e enxofre.…”
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