In the hospitals, different kinds of therapeutic procedures such as
cobalt therapy, chemotherapy, dialysis, surgery, delivery, resection of gangrenous organs, autopsy, biopsy,
para-clinical exams, injections, etc., are carried out and
result in the production of infectious wastes, sharp
objects contaminated with patients’ blood and secretions, radioactive wastes and chemical materials which
are considered to be the hazardous wastes (Pru¨ss et al.,
1999).