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13 Biosorption of Heavy Metals and Metal-Complexed Dyes Under the Influence

Overflow pipe

Homogenizing

section

Pressure tapping

Distributor plate

Rotameter

Bypass valve

Pump

Inlet

Water reservoir

Figure 13.1

Schematic representation of a fluidized bed. Source: Tsezos and Volesky [29].

pH meter

Heater

Column

Temperature

indicator

Flow

meter

Heavy metal

solution tank

Drain

Sampling

point

Manometer

Figure 13.2

Schematic representation of fluidized bed for the removal of Cu, Cd, and Pb

metal ions [30]. Source: Kamar et al. [31].

manometer filled with carbon tetrachloride (CCl4) with a density of 1590 kg/m³.

The one end of the manometer was fitted above the distributor and the left end

was open to the atmosphere. Another study [31] investigated on the comparative

studies on continuous removal of chromium(VI) present in the aqueous solution

using chemically adapted and immobilized Rhizopus nigricans on fluidized and