Abstract
Storing metal-rich mine waste (tailings) under submerged and reduced conditions can prevent the release of metals to the water column, but introduction of wetland plants on these sediments may alter the reducing environment through root oxygen diffusion or organic matter accumulation. Fertilization of these wetlands can enhance plant growth, but also may either strengthen reducing conditions via microbial stimulation, or increase the redox potential (Eh) through increased root radial oxygen loss. This long-term study (2.25 years) investigated the porewater As, Fe, and Zn concentrations of waterlogged Pb-Zn tailings from two Irish mines, Silvermines and Tara mines, with addition of Typha latifolia, fertilizer, or both treatments combined. In both tailings types, the fertilized plants showed significantly increased total biomass production, but the plants grew greater biomass in Tara tailings relative to Silvermines tailings even without fertilization. In Tara mines tailings, the addition of plants increased Eh and mobilized Zn; the addition of fertilizer enhanced reducing conditions and increased porewater concentrations of As and soluble sulfides; and the combination of treatments on these tailings resulted in complex interacti...Continue Reading
References
Mar 9, 2002·The Science of the Total Environment·Yujun YinHerbert E Allen
Jun 9, 2004·Environmental Pollution·Donna L Jacob, Marinus L Otte
Feb 1, 1986·Environmental Science & Technology·J Aggett, L S Roberts
Citations
Oct 5, 2013·Environmental Science and Pollution Research International·Muhammad Aqeel KamranHassan Javed Chaudhary
Dec 3, 2014·Ecotoxicology and Environmental Safety·Menka Kumari, B D Tripathi
Nov 24, 2006·International Journal of Phytoremediation·Silvana ArreghiniAlicia Fabrizio de Iorio
Nov 4, 2011·International Journal of Phytoremediation·Donna L JacobDavid G Hopkins
Jan 16, 2009·Journal of Environmental Sciences (China)·Dongmei Lei, Changqun Duan
Nov 27, 2009·Environmental Pollution·La Toya T KissoonMarinus L Otte
Aug 21, 2010·Environmental Pollution·Bernd NowackJörg Luster
May 15, 2016·The Science of the Total Environment·Mélida GutiérrezLucy Mar Camacho
Dec 19, 2016·The Science of the Total Environment·Carlito Baltazar TabelinToshifumi Igarashi
Jun 1, 2011·Journal of Child and Adolescent Mental Health·Myrthe Van VilsterenBrett Bowman
Nov 20, 2016·Environmental Monitoring and Assessment·Aminur RahmanShahruk Nur-A-Tomal
Jan 1, 2018·International Journal of Phytoremediation·Zhao-Yang LiJin-Tian Li
Aug 18, 2018·The Science of the Total Environment·Yan Ling LiangWilliam R Horwath
May 31, 2007·Environmental Science & Technology·Lu Y L ZhaoBernd Nowack
Aug 1, 2007·Journal of Agricultural and Food Chemistry·D GonzalezJ M Alvarez