Method and apparatus thereof to separate aluminum from aluminum-containing source material, such as fly ash, includes preparing a slurry of the source material and water in an agitation tank and adding a leaching reactant to the slurry in an amount dependent on the amount of aluminum in the source material. The wire 86 is formed of a shape memory material which can contract from an original shape when a current flows through the wire. The conical tip can be deformed or reconfigured when subject to the axial force of the pedicle screw being advanced into the pedicle or by manual operation of the operator. An autocorrelation estimator estimates the noise-component autocorrelation. The method may also include cleaning the switchable magnetic filter by deactivating the switchable magnetic filter. Upon detecting the capsule medical apparatus is positioned in the large intestine or it has already been evacuated, the capsule medical apparatus notifies such information in association with the detection.