Enhancement of polycyclic aromatic hydrocarbons (PAHs) removal during anaerobic digestion of sludge thanks to the addition of graphite felt
Carbon-based materials have been recently shown to improve interspecies electron transfer thereby increasing methane production in anaerobic digestors.Our study deals with the use of such conductive materials during anaerobic digestion of sewage sludge and the assessment of their impact on organic contaminant removal,PAHs being the model compounds.Our results not only demonstrate that graphite felt acts positively on dry matter (DM) hydrolysis but also on PAH removal.Indeed,DM and PAHs were removed 20% more with graphite felt than without.Abiotic control reactors revealed that volatilization and sorption are minor processes implied in such removal.The presence of graphite felt in anaerobic digestion could improve the bioavailability of PAHs (even those with high molecular weight) as indicated by an increase of PAHs concentration in the aqueous phase.Thus,graphite felt addition could activate PAH degradation.
Conductive materials bio-electrochemical systems polycyclic aromatic hydrocarbons
M.Kronenberg N.Bernet E.Trably D.Patureau
LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, F
国际会议
The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)
北京
英文
92-94
2017-10-17（万方平台首次上网日期，不代表论文的发表时间）