Activated sludge mass reduction and biodegradability of the endogenous residues by digestion under different aerobic to anaerobic conditions: Comparison and modeling

Martínez‐García, Carlos Galdino; Fall, Cheikh; Olguín, M. T.

doi:10.1016/j.biortech.2015.12.015

Cited by 21 publications

(10 citation statements)

References 21 publications

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“…Even if the perfect fit is obtained with a parameter set, the model is not valid without a confirmation of identifiability of the determined parameter set [16]. The data gathered from batch experiments naturally lead to the identifiability problems.…”

Section: Introductionmentioning

confidence: 99%

“…If the aim is to simultaneously modeling several different experiments, it is important to choose an operating parameter which does not have any effect on microbial mechanisms. This approach has been successfully applied with accepting the same active biomass fraction for modeling in 7 different aerobic digesters [16].…”

Section: Introductionmentioning

confidence: 99%

“…In this framework, ASM1 and ASM3 have been modified or simplified for modeling of the aerobic digestion by considering biomass decay as a main process [13][14][15][16]. Some studies included the biodegradation [14][15][16] or hydrolysis [13] of particulate microbial product, which is accepted as inert in ASMs. Recently, a comparison of ASM1 and ASM3 to simulate experimental data gathered from aerobic digestion system were performed by Fall et al [14].…”

Section: Introductionmentioning

confidence: 99%

“…During aerobic digestion, microorganisms consume their cell material in the absence of external carbon sources, undergoing an endogenous decay process [11,12]. In this framework, ASM1 and ASM3 have been modified or simplified for modeling of the aerobic digestion by considering biomass decay as a main process [13][14][15][16]. Some studies included the biodegradation [14][15][16] or hydrolysis [13] of particulate microbial product, which is accepted as inert in ASMs.…”

Section: Introductionmentioning

confidence: 99%

“…A more accurate model can be provided by the simultaneous modeling of (i) different measurements or (ii) different experiments [19,20]. The quality of a model can be improved by simultaneous modeling of several different measurements, such as COD and VSS profiles [15,16] or COD and OUR profiles [10,13,14]. If the aim is to simultaneously modeling several different experiments, it is important to choose an operating parameter which does not have any effect on microbial mechanisms.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A simple kinetic modeling approach for aerobic stabilization of real waste activated sludge

Bahar

Çığgın

2016

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A simple kinetic modeling approach for aerobic stabilization of real waste activated sludge

Bahar

Çığgın

2016

Chemical Engineering Journal

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Anaerobic digestion of amine-oxide-based surfactants: biodegradation kinetics and inhibitory effects

et al. 2017

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Recently, anaerobic degradation has become a prevalent alternative for the treatment of wastewater and activated sludge. Consequently, the anaerobic biodegradability of recalcitrant compounds such as some surfactants require a thorough study to avoid their presence in the environment. In this work, the anaerobic biodegradation of amine-oxide-based surfactants, which are toxic to several organisms, was studied by measuring of the biogas production in digested sludge. Three amine-oxide-based surfactants with structural differences in their hydrophobic alkyl chain were tested: Lauramine oxide (AO-R), Myristamine oxide (AO-R) and Cocamidopropylamine oxide (AO-cocoamido). Results show that AO-R and AO-R inhibit biogas production, inhibition percentages were around 90%. AO-cocoamido did not cause inhibition and it was biodegraded until reaching a percentage of 60.8%. Otherwise, we fitted the production of biogas to two kinetic models, to a pseudo first-order model and to a logistic model. Production of biogas during the anaerobic biodegradation of AO-cocoamido was pretty good adjusted to the logistics model. Kinetic parameters were also determined. This modelling is useful to predict their behaviour in wastewater treatment plants and under anaerobic conditions in the environment.

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Diversity of Eukaryotic Algae in Propylene Oxide Saponification Wastewater Activated Sludge

Fan

et al. 2017

Water Conserv Sci Eng

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Eukaryotic algae play an important role to maintain the energy cycle and provide oxygen in the ecosystem of water environment, such as rivers, lakes, and wastewater activated sludge. As one of the important microorganisms in the activated sludge, the community structure of eukaryotic algae in the activated sludge is still not clear. Activated sludge process had been successfully used to dispose the propylene oxide (PO) saponification wastewater, which was contaminated with high chemical oxygen demand (1200-1500 mg/L) and high chlorine concentration (22000-26,000 mg/L). In this study, we focused on the diversity of eukaryotic algae in the PO saponification wastewater and municipal wastewater treatment plant. Based on Illumina Miseq high-throughput sequencing, the algae could be divided into nine different groups for the municipal wastewater activated sludge. By contrast, the algae in the PO saponification wastewater activated sludge could be grouped into two unidentified groups, which were quite different from the municipal sludge. In order to further analyze the diversity of eukaryotic algae in the PO saponification wastewater activated sludge, 18S rDNA clone library of eukaryotic algae was constructed, and 31 clones were obtained. On account of BLASTn analysis, one of them was identified as Desmodesmus intermedius, while others were considered as uncultured eukaryotic algae. Moreover, D. intermedius, which had the potential biodiesel-producing capacity, was successfully isolated from the PO saponification wastewater activated sludge. This study would open an avenue to understand the eukaryotic alage diversity and utilize the biodiesel-producing eukaryotic alage in the PO saponification wastewater activated sludge.

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Activated sludge mass reduction and biodegradability of the endogenous residues by digestion under different aerobic to anaerobic conditions: Comparison and modeling

Cited by 21 publications

References 21 publications

A simple kinetic modeling approach for aerobic stabilization of real waste activated sludge

A simple kinetic modeling approach for aerobic stabilization of real waste activated sludge

Anaerobic digestion of amine-oxide-based surfactants: biodegradation kinetics and inhibitory effects

Diversity of Eukaryotic Algae in Propylene Oxide Saponification Wastewater Activated Sludge

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