what is the electron donor for lithotrophy
Respiration, Lithotrophy, and Photosynthesis 1 Lithotrophy (chemolithotrophy) is the acquisition of energy by oxidation of inorganic electron donors. 2  Sulfur oxidation includes oxidation of H 2 S to sulfur or to sulfuric acid by sulfur-oxidizing bacteria. 3  Sulfuric acid production leads to extreme acidification.