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Fig. 3 | SpringerPlus

Fig. 3

From: Fixed-bed column recirculation system for investigation of sorption and biodegradation of organic pollutants in saturated sediment: a detailed design and development

Fig. 3

Designed drawings of the four versions of the fixed-bed column recirculation system: (a) Version 1: a body connected two end-caps by plastic bolts and nuts; (b) Version 2: a body connected two end-caps by stainless steel clamps; (c) Version 3: a body connected two conical caps by conical joints and springs; and (d) Version 4: a body connected one conical cap by conical joints and springs

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