Research Article
Production of Biodiesel from Chlorella sp. Enriched with Oyster Shell Extracts
Table 1
Comparison of the chemical compositions of f/2 medium and 5% oyster shells with seawater.
| | Chemical composition | Oyster shell (g/L) | f/2 (g/L) |
| | Al2O3 | 0.0042 | — | | CaCO3 | 0.959 | — | | MgO | 0.0065 | — | | NaCl | — | 29.23 | | KCl | — | 1.105 | | MgCl | 1.83 | — | | Na2O | 0.0098 | — | | MgSO4·7H2O | 0.048 | 11.09 | | NaHCO3 | 0.25 | 0.25 | | Tris-base | — | 1.21 | | NaNO3 | — | 0.281 | | NaH2PO4·H2O | — | 2.12 × 10−2 | | Na2EDTA | — | 1.635 × 10−2 | | FeCl4·6H2O | — | 1.18 × 10−2 | | MnCl2·4H2O | — | 6.75 × 10−8 | | CoCl2·6H2O | — | 3.75 × 10−5 | | ZnSO4·7H2O | — | 3.75 × 10−5 | | Na2MoO4 | — | 2.25 × 10−5 | | Vitamin B1 | — | 3.75 × 10−4 | | Biotin | — | 1.88 × 10−7 | | CaCl2·2H2O | — | 1.83 |
| Seawater
(mol/kg) | Cl− | 0.546 | | Na+ | 0.469 | | Mg2+ | 0.528 × 10−1 | | 0.282 × 10−1 | | Ca2+ | 0.103 × 10−1 | | K+ | 0.102 × 10−1 | | Br− | 0.844 × 10−3 | | Sr2+ | 0.91 × 10−4 | | F− | 0.68 × 10−4 | | 0.11 × 10−2 | | P3− | 2.84 × 10−6 |
|
|
