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Waste Management & Research
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Physico-chemical characterization and leaching of tannery wastes

R. Font

Departamento de Ingenieria Quimica, Universidad de Alicante, Alicante, Spain

V. Gomis

Departamento de Ingenieria Quimica, Universidad de Alicante, Alicante, Spain

J. Fernandez

Departamento de Ingenieria Quimica, Universidad de Alicante, Alicante, Spain

M.C. Sabater

Departamento de Ingenieria Quimica, Universidad de Alicante, Alicante, Spain

The toxicity of tannery wastes was examined and discussed using several analytical methods and tests: X-ray fluorescence (XRF), Scanning electron microscopy X-ray spectrometer dispersive energy microanalysis (SEM-EDX); gas chromatog raphy + mass spectrometry (GC-MS); acid nitric digestion; EP toxicity test; inductively coupled plasma atomic emission spectrometry (ICP-AES); biotoxicity tests with Photobacte rium phosphoreum, Daphnia magna and Sprague-Dawley (rats); and other conventional tests. A comparison between the ele ments detected by X-ray fluorescence, scanning electron microscopy + X-ray spectrometer dispersive energy microanalysis and inductively coupled plasma atomic emis sion spectrometry after nitric acid digestion was carried out. A valoration of toxicity, considering the elements and com pounds detected and the biotoxicity tests was done for each type of waste. Twenty-four samples of semi-processed leather trimmings and shavings, crust or finished chrome-tanned leather trim scraps and sludges from settling in the effluent streams were analyzed.

Key Words: Tannery wastes • toxicity • characterization • EP test • chromium (III) and (VI) • lead • organics • Photobacterium Phosphoreum

Waste Management & Research, Vol. 16, No. 2, 139-149 (1998)
DOI: 10.1177/0734242X9801600206
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