6533b85dfe1ef96bd12be9eb
RESEARCH PRODUCT
Anaerobic degradation of glycol ether-ethanol mixtures using EGSB and hybrid reactors: Performance comparison and ether cleavage pathway.
J.m. Penya-rojaV. Martínez-soriaCarmen GabaldónPau San-valeroP. Ferrerosubject
0301 basic medicineEnvironmental EngineeringEther010501 environmental sciencesManagement Monitoring Policy and Law01 natural sciencesEtherWaste Disposal Fluid03 medical and health scienceschemistry.chemical_compoundBioreactorsBioreactorHybrid reactorAnaerobiosisWaste Management and Disposal0105 earth and related environmental sciencesPacked bedEthanolSewageChemical oxygen demandGeneral MedicineBiodegradationPulp and paper industryGlycol ethers030104 developmental biologychemistryAnaerobic exerciseEthersdescription
Abstract The anaerobic biodegradation of ethanol-glycol ether mixtures as 1-ethoxy-2-propanol (E2P) and 1-methoxy-2-propanol (M2P), widely used in printing facilities, was investigated by means of two laboratory-scale anaerobic bioreactors at 25oC: an expanded granular sludge bed (EGSB) reactor and an anaerobic hybrid reactor (AHR), which incorporated a packed bed to improve biomass retention. Despite AHR showed almost half of solid leakages compared to EGSB, both reactors obtained practically the same performance for the operating conditions studied with global removal efficiencies (REs) higher than 92% for organic loading rates (OLRs) as high as 54 kg of chemical oxygen demand (COD) m−3 d−1 (REs of 70% and 100% for OLRs of 10.6 and 8.3 kg COD m−3 d−1 for E2P and M2P, respectively). Identified byproducts allowed clarifying the anaerobic degradation pathways of these glycol ethers. Thus, this study shows that anaerobic scrubber can be a feasible treatment for printing emissions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-09-25 | Journal of environmental management |