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Table 2 Microalgal biomass production in microalgae–effluent culture with and without indigenous bacteria

From: Growth promotion of three microalgae, Chlamydomonas reinhardtii, Chlorella vulgaris and Euglena gracilis, by in situ indigenous bacteria in wastewater effluent

Effluent sample Increase in microbial dry weight over 7 days (mg-dry weight/100 mL) and ratio of biomass of indicated species of microalga with bacteria to that without bacteria
Chlamydomonas reinhardtii Chlorella vulgaris Euglena gracilis
MW1
 With bacteria 42.0 ± 2.6 13.8 ± 3.4 24.4 ± 2.3
 Without bacteria 27.7 ± 6.4 7.5 ± 0.6 11.8 ± 0.6
 With bacteria/without bacteria ratio 1.5 1.8 2.1
MW2
 With bacteria 29.1 ± 4.7 8.6 ± 0.5 12.8 ± 5.5
 Without bacteria 18.7 ± 2.5 3.6 ± 1.7 3.7 ± 1.3
 With bacteria/without bacteria ratio 1.6 2.4 3.5
SW
 With bacteria 42.8 ± 2.1 47.1 ± 5.1 19.0 ± 3.6
 Without bacteria ND 16.8 ± 4.5 ND
 With bacteria/without bacteria ratio IC 2.8 IC
  1. Values are means ± SDs (n = 3)
  2. MW1 municipal wastewater effluent sample 1, MW2 municipal wastewater effluent sample 2, SW swine wastewater effluent, ND not detectable, IC incalculable