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Biodegradation of High Strength Phenolic Wastewater in a Modified External Loop Inversed Fluidized Bed Airlift Bioreactor (EIFBAB)
Author(s) -
Aye Thin Thin,
Loh KaiChee
Publication year - 2003
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450810614
Subject(s) - phenol , biodegradation , airlift , bioreactor , degradation (telecommunications) , chemistry , wastewater , pulp and paper industry , volume (thermodynamics) , batch reactor , volumetric flow rate , chromatography , waste management , nuclear chemistry , environmental science , environmental engineering , organic chemistry , catalysis , engineering , physics , telecommunications , quantum mechanics
An EIFBAB was modified with a mixed‐tank reactor placed in series to extend the phenol treatability range. Phenol degradation at high concentrations was investigated at recycle rates from the mixed‐tank reactor from 0 to 15 L/h under batch operation. With a total working volume of 10 L, the new setup could handle 3000 mg/L phenol at a comparable volumetric biodegradation rate of 9 mg/L·h at optimized operation of 5 L/h recycle rate, as the 11 mg/L‐h in the original EIFBAB. While the original EIFBAB could not handle phenol concentrations exceeding 3000 mg/L, continuous operation was ascertained in the modified EIFBAB for phenol degradation of up to 5000 mg/L phenol and feed flow rates up to 160 mL/h. The recoverability of the system under shock loading of phenol up to 5000 mg/L was also assessed.