Search results for "glycol ethers"

showing 3 items of 3 documents

Anaerobic degradation of glycol ether-ethanol mixtures using EGSB and hybrid reactors: Performance comparison and ether cleavage pathway.

2017

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…

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 exerciseEthersJournal of environmental management
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Effect of substrate composition on the stability and microbial community of an anaerobic expanded granular sludge bed reactor treating printing solve…

2019

Abstract The performance and microbial community analysis of an expanded granular sludge bed reactor (EGSB) treating wastewater polluted with mixtures of ethanol and glycol ethers –such as 1-ethoxy-2-propanol (E2P) and 1-methoxy-2-propanol (M2P)– were evaluated. The results showed good EGSB performance during start-up (100% of ethanol) in terms of global removal efficiency (RE > 95%). When glycol ethers were added, an initial adaptation period was observed of ~20 days. While the RE of M2P became complete, the RE of E2P reached only 65%. The proportion of glycol ethers was gradually increased and at the end of this study only a binary mixture of E2P and M2P was fed. In the last stage, the gl…

0301 basic medicineeducation.field_of_studybiologyChemistry030106 microbiologyPopulation010501 environmental sciencesbiology.organism_classificationPulp and paper industry01 natural sciencesMicrobiologyMethanomethylovoransMethanosaetaBiomaterials03 medical and health sciencesGlycol etherschemistry.chemical_compoundMicrobial population biologyWastewaterMethanoleducationWaste Management and Disposal0105 earth and related environmental sciencesGeobacterInternational Biodeterioration & Biodegradation
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Microbial community analysis, influence of reactor hybridation and effect of the proportion of glycol ethers/ethanol mixtures in EGSB reactors

2018

Antecedentes La emisión de compuestos orgánicos volátiles (COVs) puede causar diferentes problemas en la salud pública y en el medio ambiente, actuando como contaminantes primarios y permitiendo la formación de contaminantes secundarios como el ozono troposférico. Debido a estos problemas, la emisión de COVs está limitada en muchos países tales como EEUU o los pertenecientes a la Unión Europea, en este caso regulado por la directiva 2010/75/EU. Debido al uso de disolventes en su proceso productivo, la industria flexográfica es uno de los sectores que más contribuye a la emisión de este tipo de compuestos, y las técnicas biológicas han sido consideradas como una de las mejores disponibles pa…

:CIENCIAS TECNOLÓGICAS::Ingeniería y tecnología del medio ambiente [UNESCO]anaerobic degradationsolventsexpanded granular sludge bed reactormicrobial community analysisUNESCO::CIENCIAS TECNOLÓGICAS::Ingeniería y tecnología del medio ambienteglycol ethers
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