Spectroscopic Analysis of Southern Pine Treated with Chromated Copper Arsenate. II. Diffuse Reflectance Fourier Transform Infrared Spectroscopy (DRIFT)

Ostmeyer, Jeffrey G.; Elder, Thomas; Winandy, Jerrold E.

doi:10.1080/02773818908050288

Cited by 43 publications

(16 citation statements)

References 20 publications

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“…Among the three elements measured, chromium had the lowest extraction rate. The high resistance to extraction in chromium may be due to the strong bonding between lignin and chromium [12][13][14][15]. On the whole, the 0.5N solvents used in this experiment were relatively inefficient at removing all of the elements in 6 h.…”

Section: Behavior Of Cca Elements During the Solvent Extraction Of Trmentioning

confidence: 95%

Effect of pyrolysis on solvent extractability of toxic metals from chromated copper arsenate (CCA)-treated wood

Kakitani

Hata

Kajimoto

et al. 2004

Journal of Hazardous Materials

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Section: Behavior Of Cca Elements During the Solvent Extraction Of Trmentioning

confidence: 95%

Effect of pyrolysis on solvent extractability of toxic metals from chromated copper arsenate (CCA)-treated wood

Kakitani

Hata

Kajimoto

et al. 2004

Journal of Hazardous Materials

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“…Storage of the treated wood products as well as handling of the wastes like sawdust might also contribute to the metal contamination in the surroundings. Chromium in the preservative chemicals is generally reduced from Cr(VI) to Cr(III) in the presence of aromatic rings and carbonyl groups in lignin structures (Ostmeyer et al, 1988(Ostmeyer et al, , 1989 and forms insoluble complexes leading to the fixation of As, Cu as well as Cr(VI) in the wood (Ryberg and Haugen, 1992). Moreover, As, Cu and Cr may leach in significant quantities prior to their complete fixation in the freshly impregnated wood.…”

Section: Reference Soil Normalised Plotmentioning

confidence: 99%

Metal contamination at a wood preservation site: characterisation and experimental studies on remediation

Bhattacharya

Mukherjee

Jacks

et al. 2002

The Science of The Total Environment

110

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The aim of this investigation was to determine the occurrence of As, Cu, Cr and Zn in the soil at an abandoned wood preservation unit and to examine some possible extractants for the contaminants in the soil. The mean As content of the contaminated surface soils (0-10 cm) was 186 mg kg , where as the mean concentrations of Cu, Cr y1 and Zn in soils from the contaminated area were 26, 29 and 91 mg kg , respectively. The elevated As content in y1 the mineral soils is related to adsorption of inorganic As phases in the fine grained fractions, which are characterised by large surface area and high positive surface charge under the current acidic conditions. Cu and Cr were found to be rather mobile, which is reflected in their lower abundance in soils and significant accumulation in sediments in the drainage leaving the area. The fine fraction of the soil (-0.125 mm) has an average metal content increased by nearly 34% as compared to the -2-mm fraction conventionally used for the analysis and assessment of soil contamination. The -2-mm fraction constitutes approximately 65% of the total weight while the fine fraction (-0.125 mm) constitutes approximately 10%. These facts, taken together, are essential for the choice of remediation measures. Oxalate solutions have been tested as extractants for soil remediation. Dark acid oxalate extraction dissolves the amorphous Al-and Fe-oxides and hydroxides and mobilises the adsorbed inorganic As species. Oxalate also acts as a ligand for the cationic heavy metals, releasing them from exchangeable sites. With a three-step sequential leaching, up to 98-99% of the metals could be removed. At lower concentrations and higher pH, the leaching decreased to approximately 70%. ᮊ

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“…However, it has been reported that efficient solvent extraction is prevented by the strong bonding between CCA elements and certain wood components, primarily chromium and lignin [20,21,26,27]. Thus, there are two possible methods for successfully conducting solvent extraction: mechanical or chemical pre-treating prior to solvent extraction, and the development of new solvents that can extract all CCA elements efficiently.…”

Section: Introductionmentioning

confidence: 98%

Two possible pathways for the release of arsenic during pyrolysis of chromated copper arsenate (CCA)-treated wood

Kakitani

Hata

Kajimoto

et al. 2004

Journal of Hazardous Materials

View full text Add to dashboard Cite

Spectroscopic Analysis of Southern Pine Treated with Chromated Copper Arsenate. II. Diffuse Reflectance Fourier Transform Infrared Spectroscopy (DRIFT)

Cited by 43 publications

References 20 publications

Effect of pyrolysis on solvent extractability of toxic metals from chromated copper arsenate (CCA)-treated wood

Effect of pyrolysis on solvent extractability of toxic metals from chromated copper arsenate (CCA)-treated wood

Metal contamination at a wood preservation site: characterisation and experimental studies on remediation

Two possible pathways for the release of arsenic during pyrolysis of chromated copper arsenate (CCA)-treated wood

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