Investigations on Cr mobility from coal fly ash

Sočo, Eleonora; Kalembkiewicz, Jan

doi:10.1016/j.fuel.2009.02.021

Cited by 50 publications

(17 citation statements)

References 20 publications

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“…Wang et al (2008) conducted column leaching experiments with FA and found that the maximum leached concentrations of Ni, Co, As, Cd, Mo and U (when exposed to simulated acid rain) exceeded permissible limits. In a more recent study, Sočo and Kalembkiewicz (2009) found that 8.2% of the total Cr is leachable and thus could prompt environmental concerns if used as a soil application. The leachability of elements from coal ash was examined by Ishiguro et al (1986) in an elaborate, outdoor, long-term study using tap water and rainwater.…”

Section: Indian Fasmentioning

confidence: 99%

An appraisal of the potential use of fly ash for reclaiming coal mine spoil

Ram

Masto

2010

Journal of Environmental Management

154

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Section: Indian Fasmentioning

confidence: 99%

An appraisal of the potential use of fly ash for reclaiming coal mine spoil

Ram

Masto

2010

Journal of Environmental Management

154

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“…Recently, Wang et al (2008) conducted column leaching experiments with FA, and reported that when FA containing column exposed to simulated acid rain, the concentrations of Ni, Co, As, Cd, Mo and U in leachate exceeded the permissible limits. Additionally, Sočo and Kalembkiewicz (2009) recently found that the mobility fraction of toxic Cr contain 8.2% of its total concentration in the fly ash and Huang et al (2009) indicated that Pb leaching from fly ash monolithic landfills may cause serious health risk. Additionally, Yunusa et al (2006) found that the leaching risk may risk may be higher for alkali-generating than for acidgenerating ashes.…”

Section: Risk Associated With Fly Ash Amendmentmentioning

confidence: 99%

Coal fly ash utilization in agriculture: its potential benefits and risks

Singh

Gupta

Ibrahim

et al. 2010

Rev Environ Sci Biotechnol

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Over the past few decades there has been avid interest in developing the strategies for the utilization of Fly ash (FA). Major foci have been on its agricultural application. It is often economical to use FA as a soil amendment. The potential of FA as a resource material in agriculture is due to its specific physical properties like's texture, water holding capacity, bulk density, pH etc., and contains almost all the essential plant nutrients. It can be used as in soil that cannot substitute the chemical fertilizers or organic manure it can be used in combination with these to get additional benefits in terms of improvement in soil physical characteristics, increased yields etc. The amount and method of FA application in soil would vary with the type of soil, the crop, grown, the prevailing agro climatic condition and also with the FA characteristics. Although, as an input material FA has many benefits for agriculture applications like, improvement of nutrient deficiency, effectively control various pests infesting etc., in contrast FA also contains number of toxic heavy metals and also have natural radioactivity materials in it. Therefore, proper attention should be given on some important areas related to FA utilization such as long term studies of impact of FA on soil health, heavy metal uptake, plant physiology and growth, crop quality, and continuous monitoring on the soil characteristics. While using FA in agriculture problem of heavy metal toxicity and leaching due to excess dose should also be kept in mind.

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“…Sequential extraction (SE) (Tessier et al 1979) can identify main binding sites and quantify the strength of a metal binding to particulates. Different methods of chemical SE are used to fractionate metals in various environmentally reactive or hydromorphic phases of soil (Jaradat et al 2006; Jain et al 2008; Romaguera et al 2008), sediment (Alomary and Belhadj 2007) and solid wastes (Ayari et al 2008; Soco and Kalembkiewicz 2009). These chemical SE methods can differentiate between the following fractions: metals retained in a pore solution and adsorbed onto surface of particles, exchangeable species, metals bound to carbonates or manganese (Mn) and iron (Fe) oxides, metals bound to an organic matter and sulphides, and a residual phase of metals bound in lithogenic minerals.…”

mentioning

confidence: 99%

Study on Chromium-Binding Capacity of Callitriche cophocarpa in an Aquatic Environment

Augustynowicz

Kyzioł-Komosińska

Smoleń

et al. 2012

Arch Environ Contam Toxicol

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The aim of the present study was to investigate the binding strength of chromium (Cr) ions to aquatic macrophyte Callitriche cophocarpa. Shoots of the plants were incubated in a natural water solution containing Cr(III) or Cr(VI) at a concentration ranging from 0.5 to 4 mM under laboratory conditions. We found that C. cophocarpa has an extremely high capacity to bind Cr. The average level of accumulation reached 28,385 or 7,315 mg kg−1 dry weight for plants incubated with Cr(III) or Cr(VI), respectively. Shoots incubated in a 0.5 mM concentration of Cr(III) for 5 days removed almost 100 % of the metal from solution. The major pool of the bound Cr(III) ions follows the strongest mechanism of metal-binding to an organic matter. In contrast, we found that only 25 % of Cr(VI) ions are bound into the metallo-organic compounds and 57 % of Cr(VI) exists in an easily remobilizable form. Activity of a photosynthetic electron transport (as FV/FM) was evaluated with respect to the Cr-binding mechanism. Our results contribute to the development of knowledge on processes controlling bioremediation of heavy-metallic compounds in aquatic systems.

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Investigations on Cr mobility from coal fly ash

Cited by 50 publications

References 20 publications

An appraisal of the potential use of fly ash for reclaiming coal mine spoil

An appraisal of the potential use of fly ash for reclaiming coal mine spoil

Coal fly ash utilization in agriculture: its potential benefits and risks

Study on Chromium-Binding Capacity of Callitriche cophocarpa in an Aquatic Environment

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