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Biological Denitrification in Drinking Water Treatment Using the Seaweed Gracilaria Verrucosa as Carbon Source and Biofilm Carrier
Author(s) -
Ovez B.,
Mergaert J.,
Saglam M.
Publication year - 2006
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143006x98822
Subject(s) - biofilm , effluent , nitrate , algae , nitrite , denitrification , chemistry , environmental chemistry , bacteria , microbiology and biotechnology , biology , environmental engineering , botany , environmental science , nitrogen , genetics , organic chemistry
Chemical and microbiological aspects were investigated with regard to biological denitrification of drinking water using the seaweed Gracilaria verrucosa as the carbon and energy substrate and as physical support for the microbial flora in semibatch, fixed‐bed reactors. Complete removal of nitrate (100 mg/L) was readily achieved without accumulation of nitrite. Microbiological analysis indicated that the effluent of the reactor contained high numbers of bacteria (>10 6 /mL total count). Among the 44 bacterial strains isolated directly from the samples or isolated after enrichment at 37°C, 25 different fatty acid profiles were found, indicating a complex microflora, including potential pathogens.