Leaching behavior of PCBs and PCDDs/DFs from some waste materials

Sakai, Shin-ichi; Urano, Shinya; Takatsuki, Hiroshi

doi:10.1016/s0956-053x(99)00316-5

Cited by 47 publications

(16 citation statements)

References 6 publications

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“…Ingestion of plastics with sorbed contaminants has been suggested as a possible exposure route for contaminants (Fry et al 1987;Ryan et al 1988;Mato et al 2001;Thompson et al 2004). In support of this hypothesis, the quantity of the contaminant desorbed from the plastic was greatly enhanced by the presence of surfactants and organic matter (Sakai et al 2000), suggesting that increased leaching of contaminants will occur under gastric conditions. Furthermore, acidic gastric conditions may enhance desorption of metals bound to plastics.…”

Section: Transfer Of Plastic-derived Contaminants To Organismsmentioning

confidence: 92%

Transport and release of chemicals from plastics to the environment and to wildlife

Teuten

Saquing²,

Knappe³

et al. 2009

Phil. Trans. R. Soc. B

2,371

1,200

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Plastics debris in the marine environment, including resin pellets, fragments and microscopic plastic fragments, contain organic contaminants, including polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons, petroleum hydrocarbons, organochlorine pesticides (2,2 0 -bis(p-chlorophenyl)-1,1,1-trichloroethane, hexachlorinated hexanes), polybrominated diphenylethers, alkylphenols and bisphenol A, at concentrations from sub ng g -1 to mg g -1. Some of these compounds are added during plastics manufacture, while others adsorb from the surrounding seawater. Concentrations of hydrophobic contaminants adsorbed on plastics showed distinct spatial variations reflecting global pollution patterns. Model calculations and experimental observations consistently show that polyethylene accumulates more organic contaminants than other plastics such as polypropylene and polyvinyl chloride. Both a mathematical model using equilibrium partitioning and experimental data have demonstrated the transfer of * Author for correspondence (shige@cc.tuat.ac.jp).Electronic supplementary material is available at http://dx.doi.org/rstb20080284 or via http://rstb.royalsocietypublishing.org.One contribution of 15 to a Theme Issue 'Plastics, the environment and human health'.

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Section: Transfer Of Plastic-derived Contaminants To Organismsmentioning

confidence: 92%

Transport and release of chemicals from plastics to the environment and to wildlife

Teuten

Saquing²,

Knappe³

et al. 2009

Phil. Trans. R. Soc. B

2,371

1,200

View full text Add to dashboard Cite

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“…It was reported that in flue gas, 72% of Zn, 24% of Cr, 46% of Cd, 30% of Ni, 36% of Cu, and 86% of Pb were in fly ash [16][17], and over 90% of dioxins condensed in fly ash too [18][19]. It indicated that reducing the emission of dioxins and heavy metals should be concentrated on the treatment of fly ash.…”

Section: Characteristics Of Fly Ash Meltingmentioning

confidence: 99%

Research on low emission MSW gasification and melting system

Xiao

Chi

et al. 2007

Front. Environ. Sci. Eng. China

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In order to eliminate secondary pollution caused by municipal solid waste (MSW) incineration, a MSW gasification and melting process is proposed. The process is expected to reduce the emission of pollutants, especially heavy-metals and dioxins. In this paper, the combustible components of MSW and simulated MSW were gasified in a lab-scale fluidized bed at 400°C-700°C when the excess air ratio (ER) was between 0.2 and 0.8. The experimental results indicated that the MSW could be gasified effectively in a fluidized bed at approximately 600°C-700°C when excess air ratio was 0.2-0.4. The melting characteristics of two typical fly ash samples from MSW incinerators were investigated. The results indicated that fly ash of pure MSW incineration could be melted at approximately 1,300°C and that of MSW and coal co-combustion could be melted at approximately 1,400°C. When temperature was over 1,100°C, more than 99.9% of the dioxins could be decomposed and most of the heavy-metals could be solidified in the slag. Based on the above experiments, two feasible MSW gasification and melting processes were proposed for low calorific value MSW:(1) sieved MSW gasification and melting system, which was based on an idea of multi-recycle; (2) gasification and melting scheme of MSW adding coal as assistant fuel.

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“…Therefore, it is necessary to develop specific analytical procedures that are adequate for the determination of volatile organic compounds and non-volatile organic compounds in those materials and in their leachates. Several research works have described the release of organic compounds from different materials and residues: cement-based and stabilized materials [9], contaminated soils [10][11][12], paint residues of furniture factories [13], shredder residues [14,15], municipal solid waste incinerators fly ashes [15,16], varnish residue and urea resin waste [17], sewage sludge [18] and landfills [19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%