1. Below are two common biological reactions in environmental engineering system
ID: 290012 • Letter: 1
Question
1. Below are two common biological reactions in environmental engineering systems. Identify electron donor, electron acceptor, and carbon source involved in each reaction. Classify the type of metabolism these reactions represent. Bcagmbece ON iusein imentaenginrig s n proxinate rpresentationof microbial cells Available descriptives for type of metabolism (use as many as applicable): Chemoorganotrophy, chemolithotrophy, phototrophy, autotrophy, heterotrophy, aerobic, anaerobic, anoxic, fermentative. Reaction 1 (CHsCOO is acetate, an organic acid that is the main component of vinegar) 0.125CH3COO" + 0.0295NH4+ + 0.1 0302 0.0295CsHON + 0.0955H20 + 0.095. + 0.007002 Electron donor Electron acceptor: Carbon source: Type of metabolism: Reaction 2 (C10HigOsN is a crude representation of organic matter in domestic wastewater) 0.02C1oHi9O3N+ 0.134NO3- + 0.134H- 0.0143CsH,02N +0.109CO2 + 0.06N2+ 0.02NH +0.02 HCO3 +0.157H20 Electron donor: Electron acceptor: Carbon source: Type of metabolism:Explanation / Answer
1.
1) Electron donor : NH4
2) Electron acceptor: CO2
3) Carbon Source: CH3COO-
4) Type of Metabolism : Anoxic
2.
1) Electron donor: H+
2) Electron acceptor: HCO3
3) Carbon Source: C10H19O3N
4) Type of metabolism: Fermentative
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