Development of a mathematical model for the anaerobic digestion of antibiotic-contaminated wastewater

Fonseca, R. F.; Oliveira, Guilherme Henrique Duarte de; Zaiat, Marcelo

doi:10.1016/j.cherd.2018.04.014

Cited by 7 publications

(2 citation statements)

References 36 publications

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“…Consequently, efficient microbial extracellular activities alongside with high biodegradation capacity are expected (Chan et al, 2010). In addition, K s value is an index measuring the capacity of substrate (colorants) degradation (Fonseca et al, 2018). In this study, the K s value was 340.63 ADMI d −1 as against the reported data in the literature (Ebrahimi et al, 2016;Gonçalves et al, 2016;Zhang et al, 2017).…”

Section: Viability Analysis Of Inoculumsupporting

confidence: 59%

Decolorization of Palm Oil Mill Effluent by Klebsiella Pneumonia ABZ11: Remediation Efficacy and Statistical Optimization of Treatment Conditions

et al. 2020

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Colorants contained in palm oil mill effluent (POME) are recalcitrant and carcinogenic in nature. The commonly applied ponding treatment methods have been reported inefficient for remediating the concentration of the colorants before discharge. The need for sustainable and efficient treatment technique is crucial in order to preserve the environment. In this view, this study reported the first attempt to decolorize POME using a proliferate Klebsiella Pneumonia ABZ11 at varied inoculum sizes of 5-25% (v/v), initial color concentration (650-2,600 ADMI) and treatment time of 5-40 h. The treatment conditions were optimized using Response Surface Methodology. At optimal conditions of 20% (v/v) inoculum size, initial-color concentration of 2,600 ADMI, initial pH of 7 and 35 h treatment retention time, over 80.40% color removal was achieved with insignificant disparity compared with the model predicted value of 81.538%. Also, the Monod model excellently described the decolorization kinetic process with 0.9214 coefficient of correlation (R 2), and the calculated maximum growth µ max) and halfsaturation constant (K s) were 7.023 d −1 and 340.569 ADMI d −1 , respectively. This study revealed that the Klebsiella Pneumonia ABZ11 was highly prolific and such feature may favor a synergistic biodegradation process.

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Section: Viability Analysis Of Inoculumsupporting

confidence: 59%

Decolorization of Palm Oil Mill Effluent by Klebsiella Pneumonia ABZ11: Remediation Efficacy and Statistical Optimization of Treatment Conditions

et al. 2020

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“…São relatados diversos trabalhos sobre a degradação biológica anaeróbia de compostos orgânicos em baixas concentrações e/ou persistentes via cometabolismo, alcançando-se resultados positivos (GAUTHIER et al, 2010;DELGADILLO-MIRQUEZ et al, 2011;FONSECA et al, 2018;GONZALEZ-GIL et al, 2018;OLIVEIRA et al, 2019).…”

Section: Introductionunclassified

Estudo de degradabilidade do ácido perfluoro-octanossulfônico por fotocatálise e tratamento biológico anaeróbio: otimização, cinética, produtos de degradação e ecotoxicologia

Furtado¹

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Perfluorinated compounds are chemical substances widely used in industry, especially in textile coatings, and, in addition, they are persistent, bioaccumulative and endocrine disruptor, and can cause damage to human health and the environment. For this reason, this research aimed at studying the degradation, in low concentrations (initially 100 µg L −1), of perfluorooctane sulfonic acid (PFOS), by three processes: 1) Homogeneous photocatalysis (Fe 3+ /UV); 2) Heterogeneous photocatalysis (TiO2/UV); and 3) Anaerobic biological process. First, PFOS degradation was studied by homogeneous photocatalysis using a full factorial design. With the best experimental conditions (3+ = 0.057 µmol L − and = 2.0), one obtained 44% PFOS removal after 8 h of treatment, which was close to the estimated maximum oxidation capacity of the system (MOC): 49%. The PFOS degradation by heterogeneous photocatalysis was optimized using the response surface methodology (MSR), whose optimal conditions were 2 = 1.45 g L −1 and = 4.0. This time, one achieved 83% PFOS removal after 8 h of treatment, again close to the estimated MOC: 86%. In both photocatalytic processes, PFOS degradation followed a pseudo-first order kinetics (0.34 and 0.64 h −1 , respectively), and, degradation by direct photolysis (UV) was negligible. When PFOS was degraded by the anaerobic biological process, 33% removal was obtained in 10 days of treatment. During this period of time, neither inhibition of the specific methanogenic activity (AME) nor significant changes in the microbial consortium (Archaea and Bacteria domains) were observed. In all processes, degradation products (PDs) were identified and the respective acute and chronic ecotoxicities for aquatic organisms (fish, daphnids and algae) were estimated. It was observed that, although lipophilicity influenced ecotoxicities, it is not the only determining factor.

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Modeling anaerobic digestion metabolic pathways for antibiotic-contaminated wastewater treatment

2020

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Development of a mathematical model for the anaerobic digestion of antibiotic-contaminated wastewater

Cited by 7 publications

References 36 publications

Decolorization of Palm Oil Mill Effluent by Klebsiella Pneumonia ABZ11: Remediation Efficacy and Statistical Optimization of Treatment Conditions

Decolorization of Palm Oil Mill Effluent by Klebsiella Pneumonia ABZ11: Remediation Efficacy and Statistical Optimization of Treatment Conditions

Estudo de degradabilidade do ácido perfluoro-octanossulfônico por fotocatálise e tratamento biológico anaeróbio: otimização, cinética, produtos de degradação e ecotoxicologia

Modeling anaerobic digestion metabolic pathways for antibiotic-contaminated wastewater treatment

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