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TitleUse of biopolymers as solid substrates for denitrification
Author(s)Rodrigues, A. L.
Mosquera-Corral, A.
Machado, A. V.
Moura, I.
Matos, M. I.
Brito, A. G.
Nogueira, R.
polylactic acid
solid substrate
Issue date2012
PublisherInternational Water Association Publishing (IWAP)
JournalWater Science and Technology
Abstract(s)The conventional process to remove nitrate from water, the biological denitrification, uses the addition of dissolved organic carbon that has the potential risk to deteriorate further water quality. Thus, this work aimed to evaluate the specific denitrification activity of a mixed microbial culture and a pure culture of Pseudomonas stutzeri with solid substrates such as polycaprolactone (PCL), polylactic acid (PLA), and starch. The highest nitrate reduction activity was obtained with a microbial mixed culture using starch, 104 mg N2-N/(g VSS.d), and PCL, 97 mg N2-N/(g VSS.d), followed by PLA, 53 mg N2-N/(g VSS.d). A considerable advantage of using biopolymers in water denitrification is the reduced risk of contaminating the water with soluble biodegradable organic carbon.
Publisher version
AccessRestricted access (UMinho)
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series
IPC - Artigos em revistas científicas internacionais com arbitragem

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