Simultaneous removal of phenol, ammonium and thiocyanate from coke wastewater by aerobic biodegradation

Vázquez, Isaac Amigo; Rodríguez, Jesús Daniel Santos; Marañón, E.; Castrillón, L.; Fernández, Yolanda

doi:10.1016/j.jhazmat.2006.05.018

Cited by 144 publications

(79 citation statements)

References 19 publications

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“…2, although anaerobic treatment was not effective, the combined system was quite efficient for the removal of SCN − (98.2 %) and CN − (85.4 %) ( Table S1). Degradation of SCN − , CN − , and other nitrogen and sulfur heterocyclic organic compounds was responsible for the release of ammonium and sulfate (Felföldi et al 2010;Staib and Lant 2007;Vazquez et al 2006;Maranon et al 2008;Gai et al 2007). Oxidation of sulfides and thiosulfate (Shoji et al 2014) may have also contributed to the increased concentration of inorganic sulfate in the aerobic effluent.…”

Section: Resultsmentioning

confidence: 99%

“…In the aerobic process, SCN − degradation and ammonification of NHCs was coupled with increased concentration of ammonia-nitrogen in the final effluent (Staib and Lant 2007;Vazquez et al 2006;Felföldi et al 2010), while total nitrogen (TN) remained approximately constant throughout the process. The absence of nitrifying bacteria in the aerobic sludge (Table S5) might be due to insufficient HRT (72 h) or an inhibitory effect of toxic compounds .…”

Section: Discussionmentioning

confidence: 99%

“…CWW is generally treated by biological methods such as conventional activated sludge processes (Vazquez et al 2006;Maranon et al 2008). Despite the toxicity of contaminants like cyanides (CN − ) and phenols (Kim et al 2008;Sharma et al 2012), aerobic activated sludge processes can effectively remove phenol Electronic supplementary material The online version of this article (doi:10.1007/s00253-016-7591-8) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the toxicity of contaminants like cyanides (CN − ) and phenols (Kim et al 2008;Sharma et al 2012), aerobic activated sludge processes can effectively remove phenol Electronic supplementary material The online version of this article (doi:10.1007/s00253-016-7591-8) contains supplementary material, which is available to authorized users. derivatives, polyaromatic hydrocarbons (PAH), nitrogenous heterocyclic compounds (NHCs), thiocyanate (SCN − ), thiosulfate (Felföldi et al 2010;Vazquez et al 2006;Zhang et al 2013;Bai et al 2009;Sharma and Philip 2015;Shoji et al 2014), releasing sulfate (SO 4 2− ), and ammonia (NH 4 + ) into treated effluent (Staib and Lant 2007). However, aerobic processes require high energy input, generate large volumes of sludge, and do not adapt well to influent fluctuations .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Performance and microbial community composition in a long-term sequential anaerobic-aerobic bioreactor operation treating coking wastewater

Joshi

Zhang

Tian

et al. 2016

Appl Microbiol Biotechnol

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The combined anaerobic-aerobic biosystem is assumed to consume less energy for the treatment of high strength industrial wastewater. In this study, pollutant removal performance and microbial diversity were assessed in a longterm (over 300 days) bench-scale sequential anaerobicaerobic bioreactor treating coking wastewater. Anaerobic treatment removed one third of the chemical oxygen demand (COD) and more than half of the phenols with hydraulic retention time (HRT) of 42 h, while the combined system with total HRT of 114 h removed 81.8, 85.6, 99.9, 98.2, and 85.4 % of COD, total organic carbon (TOC), total phenols, thiocyanate, and cyanide, respectively. Two-dimensional gas chromatography with time-of-flight mass spectrometry showed complete removal of phenol derivatives and nitrogenous heterocyclic compounds (NHCs) via the combined system, with the anaerobic process alone contributing 58.4 and 58.6 % removal on average, respectively. Microbial activity in the bioreactors was examined by 454 pyrosequencing of the bacterial, archaeal, and fungal communities. Proteobacteria (61.2-93.4 %), particularly Betaproteobacteria (34.4-70.1 %), was the dominant bacterial group. Ottowia (14.1-46.7 %), Soehngenia (3.0-8.2 %), and Corynebacterium (0.9-12.0 %), which are comprised of phenol-degrading and hydrolytic bacteria, were the most abundant genera in the anaerobic sludge, whereas Thiobacillus (6.6-43.6 %), Diaphorobacter (5.1-13.0 %), and Comamonas (0.2-11.1 %) were the major degraders of phenol, thiocyanate, and NHCs in the aerobic sludge. Despite the low density of fungi, phenol degrading oleaginous yeast Trichosporon was abundant in the aerobic sludge. This study demonstrated the feasibility and optimization of less energy intensive treatment and the potential association between abundant bacterial groups and biodegradation of key pollutants in coking wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance and microbial community composition in a long-term sequential anaerobic-aerobic bioreactor operation treating coking wastewater

Joshi

Zhang

Tian

et al. 2016

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

show abstract

“…Considering the pH (6.5) and the possible mechanisms of thiocyanate degradation found in the bibliography, it seems likely that the inhibitory product was NH 4 + . Thus, when the amount of NH 4 + formed from the degradation of SCN -is high enough to cause inhibition [4,27], the biodegradation rate decreases and the thiocyanate concentration remains invariable with time. If all the nitrogen metabolized was transformed into NH 4 + , the final concentration of NH 4 + would be higher than 1,000 mg L -1 for an initial thiocyanate concentration of 3,600 mg L -1 .…”

Section: Utilization Of Carbon From Thiocyanatementioning

confidence: 99%

Conditions and Mechanisms in Thiocyanate Biodegradation

Combarros¹,

Collado²,

Laca³

et al. 2015

JRST

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Presence of thiocyanate (SCN -) is a problem of considerable interest in many industrial wastewaters, where this contaminant often appears accompanied by secondary sources of carbon, nitrogen and/or sulphur. In order to understand the effect of these compounds on the biodegradability of SCN -, this work investigates how the bacterium Pararacoccus thiocyanatus utilises the three elements that form the molecule of thiocyanate and compare this behaviour with those obtained in presence of other sources of N, S and C. Result showed that the bacterium was capable of utilizing thiocyanate as the sole substrate, achieving specific biodegradation rates of approximate 1.20 mg SCN -(mg cell·h) -1 and eliminating initial thiocyanate concentrations up to 5,000 mg L -1 . Experimental data were successfully fitted to a Teisser model, assuming the existence of substrate inhibition obtaining values of μ max of 0.059 h -1 , K s of 790 mg L -1 and K i of 6,520 mg L -1 for free mineral medium. Presence of additional carbon and nitrogen sources implied catabolic repression of the biodegradation of thiocyanate. In this case, only concentrations lower than 3,500 mg L -1 could be treated, obtaining specific degradation rates of around 0.70 mg SCN -·(h·mg cell) -1 . Tessier model values showed a higher maximum specific growth rate (0.344 h -1 ), changing also the values for affinity and inhibition constants (1,150 mg L -1 and 1,730 mg L -1 , respectively).

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Ammonium removal from coking wastewater in a pilot‐scale two‐stage aerobic biofilm system: Biokinetic analysis

Zhou

Zhang

2016

Can J Chem Eng

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A novel four‐stage pilot‐scale anaerobic/anoxic/oxic/oxic (A2/O2) biofilm process was successfully developed to treat coking wastewater with high ammonium loading. In this study, three different dynamical models including the first‐order substrate removal model, the Monod‐biological contact oxidation (Monod‐BCO) model, and the modified Stover‐Kincannon model were particularly applied to analyze kinetics of ammonium removal in a two‐step aerobic stage. For the O1 reactor, all models were appropriate for describing ammonium removal and the correlation coefficients of first‐order substrate removal model, BCO model, and modified Stover‐Kincannon model were 0.8974, 0.9210, and 0.9726, respectively. The model verification indicated that the modified Stover‐Kincannon model was slightly more applicable to predict ammonium removal in the O1 reactor. It was demonstrated that the maximum removal rate of ammonium was 0.208 kg/(m3 · d) by the Stover‐Kincannon model. For the O2 reactor, the modified Stover‐Kincannon model turned out to be the best fitting kinetic model for ammonium removal compared to the first‐order substrate removal model (R2 = 0.1556) and Monod‐BCO model (R2 = 0.5022). The maximum ammonium conversion rate (Um2‐O2) by the modified Stover‐Kincannon model was 1.180 kg/(m3 · d), while saturation rate constant k3‐O2 was 1.221 kg/(m3 · d). Furthermore, the determination coefficient between measured and predicted values obtained by the modified Stover‐Kincannon model was quite high (R2 = 0.9788) in the O2 process and a lower average residual square (6.60 × 10−6) was also obtained. The results of kinetic studies by the Stover‐Kincannon model can predict ammonia removal efficiency well in two‐step aerobic biofilm reactors of a coking wastewater treatment combined system.

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Simultaneous removal of phenol, ammonium and thiocyanate from coke wastewater by aerobic biodegradation

Cited by 144 publications

References 19 publications

Performance and microbial community composition in a long-term sequential anaerobic-aerobic bioreactor operation treating coking wastewater

Performance and microbial community composition in a long-term sequential anaerobic-aerobic bioreactor operation treating coking wastewater

Conditions and Mechanisms in Thiocyanate Biodegradation

Ammonium removal from coking wastewater in a pilot‐scale two‐stage aerobic biofilm system: Biokinetic analysis

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