| Title: | Removal of naphthalene and phenanthrene using aerobic membrane bioreactor |
| Author(s): | Mijaylova Nacheva P; Esquivel Sotelo A; |
| Address: | "Mexican Institute of Water Technology, Paseo Cuauhnahuac 8532, Progreso, Jiutepec, C.P. 62550, Morelos, Mexico. petiam@tlaloc.imta.mx. Faculty of Engineering - Campus Morelos, National Autonomous University of Mexico, Paseo Cuauhnahuac 8532, Progreso, Jiutepec, C.P. 62550, Morelos, Mexico" |
| DOI: | 10.1007/s10532-016-9757-6 |
| ISSN/ISBN: | 1572-9729 (Electronic) 0923-9820 (Linking) |
| Abstract: | "The removal of polycyclic aromatic hydrocarbons by membrane bioreactor (MBR) under aerobic conditions had been studied using naphthalene (NAP) and phenanthrene (PHE) as model compounds. Three MBRs with submerged ultra-filtration hollow fiber membranes were operated applying different operational conditions during 6.5 months. Complete NAP and PHE removal was obtained applying loads of 7 gNAP kgTSS(-1) day(-1) and 0.5 gPHE kgTSS(-1) day(-1), while the organic loading rate was adjusted to 0.26 kgCOD kgTSS(-1) day(-1), with the biomass concentration being 6000 mgTSS L(-1), the hydraulic retention time (HRT) 8 h and the solids retention time (SRT) 30 days. Load increases, as well as HRT and SRT reductions, affected the NAP and PHE removals. Biodegradation was found to be the major NAP and PHE removal mechanism. There was no NAP accumulation in the biomass. Low PHE quantities remain sorbed in the biomass and the contribution of the sorption in the removal of this compound was estimated to be less than 0.01 %. The volatilization does not contribute to the PHE removal in MBRs, but the contribution of NAP volatilization can reach up to 0.6 % when HRT of 8 h is applied" |
| Keywords: | "Biodegradation, Environmental Biomass *Bioreactors Membranes, Artificial Naphthalenes/isolation & purification/*metabolism Phenanthrenes/isolation & purification/*metabolism Waste Disposal, Fluid Membrane bioreactor (MBR) Naphthalene Phenanthrene Polycycl;" |
| Notes: | "MedlineMijaylova Nacheva, Petia Esquivel Sotelo, Alberto eng Netherlands 2016/02/20 Biodegradation. 2016 Jun; 27(2-3):83-93. doi: 10.1007/s10532-016-9757-6. Epub 2016 Feb 19" |
