Complex sentence: ERD involves "in-situ" injections of dehalorespiring bacteria, among fermentable organic substrates serving as electron donors, while the two pollutants, TCE and PCE, act as the electron acceptors.
Split into simpler sentences: ERD involves "in-situ" injections of dehalorespiring bacteria, among fermentable organic substrates serving as electron donors. The two pollutants, TCE and PCE, act as the electron acceptors.