Design of a Slurry Process for the Biotechnological Treatment of Excavated Polluted Soils

Kleijntjens, R. H.; Meeder, T. A.; Geerdink, M. J.; Luyben, K. Ch. A. M.

doi:10.1007/978-94-011-3270-1_216

Cited by 5 publications

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“…This slurry process was developed as a remedial action technology for the decontamination of excavated soils polluted with organic products, e.g. oil (Kleijntjens et al, 1990(Kleijntjens et al, , 1992. In bioreactors, suspended polluted soil particles are aerobically decontaminated by means of microorganisms under controlled conditions.…”

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Particle suspension hydrodynamics in a tapered gas agitated reactor

1994

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Experiments were carried out in a tapered gas agitated solid‐liquid‐gas (S‐L‐G) reactor at 4 reactor volumes (up to 4 m3 ) with 4 different slurry densities (up to 40 mass%). Using monodisperse sand particles (260 μm diameter) at a low specific power input (ranging from 50‐300 W/m3), minimal suspension was achieved. The spatial solids hold‐up distributions were determined using a specially designed sampling probe. In combination with a mathematical model, the measurements show that a decrease in the ratio of the eddy length and the particle diameter (le/dP) takes place at increasing slurry densities. At a solids hold‐up of about 0.4, the critical lower limit (l < le/dp < 5). below which no suspension state can exist, is reached.

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confidence: 99%