Samenvatting (in Engels)
Metallurgical industries commonly release large amounts of dissolved heavy metals in the environment, which is harmful for the living organisms. Sulfur-reducing prokaryotes are of great interest to bioremediate such environments, as sulfide is the main product of their activity. We explored the microbiological suitability of acidophilic sulfur reduction for metal recovery by enriching sulfur reducers from sediments of an extreme acidic environment (Tinto river), which resulted in the isolation of novel acidotolerant microorganisms called Desulfurella amilsii and Lucifera butyrica. The thesis gives insight into the metabolism of sulfur respiration and at the possibilities of biotechnological application of both isolates at their optimal conditions for growth and at acidic conditions.