TABLE 3.

Biomass and lipid yield of S. obliquus in MSST and FP discharges with or without PL supplementation on day 21 of incubationa

PL concn (g liter−1) or discharge categoryBiomass (g liter−1)Lipid yield (mg liter−1)b
MSSTFPMSSTFP
N 11 (control)1.1 ± 0.1a1.0 ± 0.1b122.1 ± 1.8a (11)123.2 ± 2.0a (12)
Waste discharge1.4 ± 0.2b0.6 ± 0.1a207.2 ± 2.5c (13)110.1 ± 1.7a (19)
51.8 ± 0.2c1.6 ± 0.2c287.1 ± 2.6e (16)279.3 ± 2.7e (17)
101.8 ± 0.2c1.7 ± 0.2c236.3 ± 2.1d (13)228.6 ± 2.6d (14)
152.2 ± 0.2d2.0 ± 0.2d165.8 ± 1.8b (8)189.1 ± 2.4c (10)
202.1 ± 0.2d1.9 ± 0.2d106.6 ± 2.3a (5)137.1 ± 1.8b (7)
  • a Values represent averages ± standard errors of data based on three independent determinations. Values followed by the same letter did not differ significantly, as determined by Duncan's multiple-range test (P < 0.05). A separate analysis was done for each column.

  • b Values in parentheses represent lipid content percentages determined on the basis of percent dry cell weight.