I 1. Nltrlfylng bacteria : Nttrosomonas, Nitrobacter. f 2MH: ♦ 30? ■v^' 2HNO2 ♦ 2H20 ♦ 158 K Cal
i 2NaN02 + 02 2NaN03 + 36 K Cal
I 2_ Sulphur bacteria Beggiatoa, Thiothrix.
| 2H2S + 02 2H20 ♦ 2S + energy 2S ♦ 2H2 + 303 2H2S04 ♦ energy I 3. Iron bacteria eg Ferrobaciflus. Leptothm.
—* 4FeC03 + 02 + 6HsO -> 4Fe (OH>3 ♦ 4C02 + energy 4w Hydrogsn bacteria : 2H2 ♦ O2 —> 2H2O + energy 5. Methane bacteria Melhanomonas.
CH4 ♦ 202 CO2 + 2H20 + energy