Abstract: A rotatable target is provided. The target may include a body. The body may be made of a semi rigid or rigid material. The present invention may further include a mounting device. The mounting device may include a first end and a second end. The first end may be substantially looped and the second end may be mounted to the body. The target of the present invention may be rotatable about the axis of the second end of the mounting device allowing for the dispersal of energy as well as to providing additional visual stimulation and challenge.

Abstract: Methods for processing waste activated sludge obtainable from wastewater plants. The methods herein are useful in that they provide novel waste activated sludge preparations that are substantially free of live microbial organisms and contain a high content of digestible protein.