Poster (Scientific congresses and symposiums)
Effect of metal nanoparticles encapsulated in porous silica on the biphenyl biodegradation by Rhodococcus erythropolis T902.1
Wannoussa, Wissal; Hiligsmann, Serge; Heinrichs, Benoît et al.
2014Bioforum
 

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Keywords :
Biphenyl; nanoparticles; sol–gel process
Abstract :
[en] Biphenyl is stable and highly hydrophobic, thus having a low availability for degrading microorganisms, which need an aqueous environment for their growth. As a consequence, bioremediation processes are very limited. However, a few studies showed that using a low metal concentration accelerates the biodegradation of pollutants (Yeom and Yoo1997). Nanoparticles are considered as a new generation of compounds to improve environmental remediation and biological processes (Beckers et al. 2013; Zhang 2003). This paper investigated the enhancement effect of nanometre-sized metallic Cu, Ag, Pd or Co, on the biphenyl biodegradation by Rhodococcus erythropolis T902.1. Have been synthesized by a sol–gel process (Lambert et al. 2004). These nanoparticles (NP) of about 2–3 nm were encapsulated in porous silica (SiO2) and were added at low concentration (10-4M) in the M284 minimal medium with 500 ppm biphenyl as source of carbon and energy. The cultures containing Pd or Co produced 30% more biphenyl degraded with a higher Rhodococcus growth than those without NP (positive control) or with silica particles only. On the contrary, the presence of 10-4 M Cu or Ag nanoparticles showed an inhibitory effect on bacterial growth and biphenyl degradation compared to the positive.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Wannoussa, Wissal ;  Université de Liège - ULiège > Doct. sc. (bioch., biol. mol.&cell., bioinf.&mod.-Bologne)
Hiligsmann, Serge ;  Université de Liège - ULiège > Département des sciences de la vie > Biochimie et microbiologie industrielles
Heinrichs, Benoît ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Nanomatériaux et interfaces
Al-Ahmad, Alaa Eddin ;  Université de Liège - ULiège > Form. doct. sc. agro. & ingé. biol.
Masy, Thibaut ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol.
Weekers, Frédéric;  Artechno S.A
Ahmad, Sabri;  Artechno S.A
Stéphanie D, Lambert;  Université de Liège - ULiège
Thonart, Philippe ;  Université de Liège - ULiège > Département des sciences de la vie > Biochimie et microbiologie industrielles
Language :
English
Title :
Effect of metal nanoparticles encapsulated in porous silica on the biphenyl biodegradation by Rhodococcus erythropolis T902.1
Publication date :
01 May 2014
Number of pages :
2*1m
Event name :
Bioforum
Event organizer :
BioLiège
Event place :
Liàge, Belgium
Event date :
15-5-2014
Available on ORBi :
since 21 May 2014

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