Aerobic biodegradation of a mixture of monosubstituted phenols in a sequencing batch reactor

Fernández, I. González; Suárez-Ojeda, María Eugenia; Pérez, Julio; Carrera, Julián

doi:10.1016/j.jhazmat.2013.05.052

Cited by 22 publications

(8 citation statements)

References 34 publications

(63 reference statements)

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“…SBR has proven to be a suitable alternative to the continuous-flow systems for nitrogen removal through nitrification and denitrification, and nowadays, there is a growing interest to improve the overall performance of the SBRs treating industrial wastewaters of chemical complexity (Tomei and Annesini 2008;Singh and Srivastava 2011;Fernández et al 2013). Silva et al (2014) reported that the use of a physiologically stable nitrifying sludge in a SBR fed with p-cresol not only allowed to maintain a stable nitrification but also to increase the metabolic capacity of the sludge for mineralizing p-cresol and its intermediates (phydroxybenzaldehyde and p-hydroxybenzoate) with increasing specific rates throughout the operation cycles.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous oxidation of ammonium and cresol isomers in a sequencing batch reactor: physiological and kinetic study

Salas-Cortés

Cuervo-López

Texier

2016

Environ Sci Pollut Res

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The aim of this study was to evaluate the physiological and kinetic capacities of a nitrifying consortium to simultaneously oxidize ammonium (138 mg N/L day), m-cresol, o-cresol, and p-cresol (180 mg C/L day in mixture) in a sequencing batch reactor (SBR). A 1-L SBR was firstly operated without cresol addition (phase I) for stabilizing the nitrification respiratory process with ammonium consumption efficiencies close to 100 % and obtaining nitrate as the main end product. When cresols were added (phase II m-cresol (10, 20, and 30 mg C/L); phase III m-cresol (30 mg C/L) and o-cresol (10, 20, and 30 mg C/L); phase IV a mixture of three isomers (30 mg C/L each one)), inhibitory effects were evidenced by decreased values of the specific rates of nitrification compared with values from phase I. However, the inhibition diminished throughout the operation cycles, and the overall nitrifying physiological activity of the sludge was not altered in terms of efficiency and nitrate yield. The different cresols were totally consumed, being o-cresol the most recalcitrant. The use of SBR allowed a metabolic adaptation of the consortium to oxidize the cresols as the specific rates of consumption increased throughout the cycles, showing that this type of reactor can be a good alternative for treating industrial effluents in a unique reactor.

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Section: Introductionmentioning

confidence: 99%

Simultaneous oxidation of ammonium and cresol isomers in a sequencing batch reactor: physiological and kinetic study

Salas-Cortés

Cuervo-López

Texier

2016

Environ Sci Pollut Res

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“…Conventional methods of treatment for quinoline-containing wastes have been largely chemical or physical, but these processes have led to secondary effluent problems (Fernandez et al 2013). In compare to chemical or physical methods, biological method has been preferred because of complete mineralization of quinoline, economial aspects, and nontoxic by-products.…”

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confidence: 99%

Biodegradation and Interaction of Quinoline and Glucose in Dual Substrates System

Han

et al. 2014

Bull Environ Contam Toxicol

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An indigenous mixed culture of microorganisms, isolated from a full-scale coal gasification wastewater treatment plant, was used in degrading quinoline in presence of glucose as an alternative carbon source. The results showed that biodegradation kinetics of both quinoline and glucose could be described by first-order reaction kinetics model. It was also found that the biodegradation rate of quinoline was accelerated by the presence of glucose, while glucose degradation was inhibited by the presence of quinoline. Both the biomass yield coefficient and specific growth rate were increased with the increasing of the glucose concentrations in the dual substrates system. A sum kinetics model was used to describe the relative effects of the two substrates on their individual uptakes. The interaction parameter values indicated that quinoline exhibits stronger inhibition on glucose degradation. But for glucose, its effect on quinoline utilization was stimulative. Furthermore, the stimulation was positively correlated with the concentration of glucose in the system.

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“…7 This process is eco-friendly and energy-efficient with achievable complete mineralisation of chlorophenols. 8 Various studies on chlorophenols biodegradation using pure or mixed cultures have been conducted. 9,10 In comparison to pure cultures, mixed cultures which contained several kinds of microorganism offered complete mineralisation of toxic compounds.…”

Section: Introductionmentioning

confidence: 99%

Studies of the Effects of Co-substrates on Biodegradation Kinetics of 4-Chlorophenol Using Response Surface Methodology (RSM)

Halim¹,

Peng²,

Ling³

2019

JPS

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This study aimed to investigate the effect of glucose or sucrose as cosubstrate on the kinetics of 4-chlorophenol (4-CP) biodegradation by 4-CP-acclimated activated sludge. The performance of 4-CP biodegradation was enhanced in the presence of co-substrate with greater values of zero-order rate constant observed for sucrose compared to glucose at higher 4-CP concentration. The interaction effects of two factors, namely initial 4-CP and co-substrate concentrations ranging from 100-500 mg l -1 and 0-1000 mg l -1 , respectively, on the biodegradation kinetics were examined by using response surface methodology (RSM). For glucose, the kinetics was found dependent on the 4-CP initial concentration. The optimised condition for 4-CP biodegradation in the presence of glucose was: 200 mg l -1 4-CP and 750 mg l -1 glucose with rate constant of 7.630 mg l -1 h -1 .

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Aerobic biodegradation of a mixture of monosubstituted phenols in a sequencing batch reactor

Cited by 22 publications

References 34 publications

Simultaneous oxidation of ammonium and cresol isomers in a sequencing batch reactor: physiological and kinetic study

Simultaneous oxidation of ammonium and cresol isomers in a sequencing batch reactor: physiological and kinetic study

Biodegradation and Interaction of Quinoline and Glucose in Dual Substrates System

Studies of the Effects of Co-substrates on Biodegradation Kinetics of 4-Chlorophenol Using Response Surface Methodology (RSM)

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