In this PhD thesis thepossibility of high quality foam glass material production from sewage sludge ash prepared by incineration of sewage sludge from waste water treatment plants, that due to its increasing quantities and adverse chemical composition represent an environmental hazard was investigated. Besides ash as starting materials,waste container glass culet and waste limestone as a foaming agent were used. It has been found that foam glass with uniform porosity and volume stability with improved compressive strength (≈ 30 MPa) in relation to commercial foam glass products, can be prepared through heating by 5 °C/min to 850 °C with holding time of 15 min at final temperature. Prepared foam glass can utilize a high content of ash (up to 28 wt.%) with small share of foaming agent (1 – 2 wt.%). Leaching of heavy metals from foam glass samples showed that heavy metal concentrations in eluates are within the legislative limits for non-hazardous wastes and that they show antibacterial activity against a clinically relevant bacterium Acinetobacter baumannii. Improved mechanical properties of prepared foam glass resulted from enhanced crystallization of sodium calcium silicate, α-quartz, diopside and wollastonite. Crystallization of these phases apart from contributing to the improvement of the compressive strength of the material simultaneously reduces the leaching of heavy metals from foam glass matrix. The antibacterial activity was the result of high pH value of eluates, which were the consequence of alkaline reaction of unreacted calcium oxide adhered to walls of pores, particles of which were detected by electron microscopy.