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Optimization of oil extraction from heterotrophic Chlorella by hexane
  
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KeyWord:heterotrophic Chlorella  cell crushing  extraction  oil yield
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Author NameAffiliation
BI Shenglei  
ZHANG Chengming  
LU Yue，etc  
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Abstract:
      The effects of key parameters such as mass concentration of algae cell solution，crushing pressure，crushing times，extraction time，extraction temperature and dosage of extractant （hexane） on the oil yield were studied so as to obtain the optimal oil extraction process from heterotrophic Chlorella by hexane.The results showed that the optimal oil extraction process was obtained as follows：mass concentration of alage cell solution 110 g/L，crushing pressure 100 MPa，crushing times 4 times，extraction time 5 h，extraction temperature 40℃，dosage of hexane 9 mL/g（based on the mass of dry algae powder）. Under these conditions，the oil yield could reach the highest about 55% after extraction for 5 times.
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