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Chinese Journal of Applied Ecology ›› 2002, Vol. ›› Issue (2): 145-150.

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Accumulation and biodegradation of anthracene by Chlorella protothecoides under different trophic conditions

YAN Xue, YANG Yongqing, LI Yongke, SHENG Guoxing, YAN Guoan   

  1. Wuhan University, Wuhan 430072
  • Received:2001-07-19 Revised:2001-08-06 Online:2002-02-15

Abstract: The bioaccumulation and degradation of anthracene by the green alage(Chlorella prothecoides)under autotrophic and heterotrophic conditions were studied.About 29% and 20% of anthracene(original concentration1.0mg·L-1)were degraded by light and by Chlorella protothecoides under the autotrophic condition,respectively.About 33.53% of anthracene (original concentration2.5mg·L-1)were degraded by C. protothecoides under the heterotrophic condition.The resistance and degradation ability of C. protothecoides under the heterotrophic condition was higher than that under the autotrophic conditions.More than80% of residual anthracene was accumulated by algal cell under the two conditions.The bioaccumulation factor were 9064 and 1899,under the autotrophic and heterotropnic conditions,respectively.The net accumulation of anthracene,however,was much higher under the heterotropnic condition (202.29μg)than that under the autotrophic condition (69.687μg).

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