Leachability of Cu and Ni in wood ash-amended soil as impacted by humic and fulvic acid

Chirenje, Tait; Rivero, Carmen; Lena, Q.

doi:10.1016/s0016-7061(02)00120-9

Cited by 55 publications

(33 citation statements)

References 25 publications

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“…The strong decline of soil available Cu content (linear with logarithm of days) suggested fast losses of this element from the burned soil, probably associated to complexed organic compounds or to fine particles eroded from the soil (Chirenje et al, 2002;Quinton and Catt, 2007), and agreed with the evolution of Cu content in sediments from the same plots (Gomez-Rey et al, submitted for publication).The evolution of soil available Cu content after fire could be also explained by solute losses, which increased during the first rain events following fire (see Smith etal., 2011).…”

Section: Discussionmentioning

confidence: 99%

Impact of fire and post-fire management techniques on soil chemical properties

et al. 2013

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The effects of fire (Control burned soil) and two emergency stabilisation techniques (grass Seeding and straw Mulching) on 20 chemical characteristics were evaluated on 0-5 cm top-soils sampled 1, 90, 180 and 365 days after an experimental fire in a steep shrubland of a temperate-humid region (NW Spain). Most part of pH (in H 2 0 and KC1) variance was explained by the sampling date. No clear temporal trends were identifiable for total soil C and N content, likely due to the large SOM pool in these soils; however, changes on soil 8 13 C were explained by the deposition of 13 C-depleted ashes, followed by its progressive erosion, while those on soil S 15 N were a consequence of fire induced N outputs. After the fire, NH^-N, P, Na, K, Mg, Ca, Mn, Cu, Zn and B concentrations increased, while those of NO^ -N, Al, Fe and Co did not vary significantly. Despite a significant decline with time, concentrations of Mg, Ca and Mn at the end of the study were still higher than in unburned soil, while those of K, Cu, Zn and B were similar to the pre-fire levels and those of Nftf-N, P and Na were below pre-fire values. Mulching and Seeding treatments for burned soil emergency stabilisation had significant effects on soil 8 15 N and extractable K, Mg and Ca, while data were inconclusive for their possible effects on the extractable Al, Fe and Co.

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Section: Discussionmentioning

confidence: 99%

Impact of fire and post-fire management techniques on soil chemical properties

et al. 2013

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“…Significant amount of Cu is also bound with organic matter. Copper generally reacts with organic matter by forming stable coordination complexes rather than by hydrogen bonding or electrostatic attraction because of its low hydration energy and low charge (Chirenje et al 2002). Nickel is present in residual Fig.…”

Section: Fractionation Of Metalsmentioning

confidence: 99%

Solubility and Fractionation of Different Metals in Fly Ash of Powder River Basin Coal

Bhattacharyya

Reddy

Attili

2011

Water Air Soil Pollut

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Coal is one of the major sources of fuel for electricity production and will continue to be used for many more decades. Thus, it is important to study the effects of disposal of coal burning byproducts including fly ash into the environment. In this study, the solubility of cations and anions from the fly ash in water is discussed. Also, the fractionation of different metals from fly ash in water is studied to understand which fraction of the metals would likely be mobilized. The results from these studies suggested that the metals in the fly ash are bound mostly to carbonate, organic, and residual fractions. Also, when water solubility data are modeled with a geochemical model (Visual MINTEQ), the saturation index predictions suggested that brucite (Mg(OH) 2 ) and calcite (CaCO 3 ) could potentially precipitate and mineralize the atmospheric CO 2 . Such mineralization process could potentially reduce the leaching of toxic metals from fly ash. Results from this study will be helpful in understanding the fate of different metals from fly ash land disposal environments.

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“…Among these groups, FA is the most mobile fraction and a major component of dissolved organic matter in the environment (Scott and Martin, 1990;Stevenson, 1994;Maie et al, 2004). FAs as carrying agents and complexing media affect the transport and bioavailability of environmental contaminants such as heavy metals (Piccolo and Stevenson, 1982;Chirenje et al, 2002;Plaza et al, 2005), polycyclic aromatic hydrocarbons (PAHs) (Chiou, 1989;Perminova et al, 2001; and other chemicals (Stevenson, 1994). Therefore, the content of FA in every environmental compartment such as soil, sediment, and water has a paramount influence in environmental risk assessment.…”

Section: Introductionmentioning

confidence: 99%