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Table 5 Oxide content in the biomass ashes of Scenedesmus sp.

From: Semi-quantitative determination of ash element content for freeze-dried, defatted, sulfated and pyrolysed biomass of Scenedesmus sp.

Elements (% by mass)Freeze-driedDefattedPyrolyzedSulfated
MeanSDMeanSDMeanSDMeanSD
MgO10.21a0.5714.03b0.5811.77a0.4214.03b2.91
P2O547.76a0.7344.14b0.9947.52a1.0119.65c3.26
SO3ni ni ni 28.754.40
K2O9.16a0.228.55b0.229.10a0.233.29c0.75
CaO12.10a0.3510.82b0.2411.07b0.394.37c0.80
Fe2O314.16a0.9114.56a,b0.3313.51a,b0.8619.96c4.40
CoO2.14a0.392.46a0.581.95a0.383.19a2.00
Br2.14a0.093.21a0.552.33a0.474.69a3.95
  1. Different letters indicate significant difference (p < 0.05) by Tukey test
  2. ni not identified