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  • Title: Anaerobic degradation of tetrachloroethylene using different co-substrates as electron donors.
    Author: Yang Q, Shang HT, Wang XL, Li HD, Wang JL.
    Journal: Biomed Environ Sci; 2006 Feb; 19(1):73-6. PubMed ID: 16673822.
    Abstract:
    OBJECTIVE: To investigate the biodegradation of tetrachloroethylene (PCE) by acclimated anaerobic sludge using different co-substrates, i.e., glucose, acetate, and lactate as electron donors. METHODS: HP-6890 gas chromatograph (GC) in combination with auto-sampler was used to analyze the concentration of PCE and its intermediates. Results PCE could be degraded by reductive dechlorination and the degradation reaction conformed to the first-order kinetic equation. The rate constants are k(lactate) > k(glucose) > k(acetate). The PCE degradation rate was the highest in the presence of lactate as an electron donor. CONCLUSION: Lactate is the most suitable electron donor for PCE degradation and the electron donors supplied by co-metabolic substrates are not the limiting factors for PCE degradation.
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