Inhibitory effects of toxic compounds on nitrification process for cokes wastewater treatment

Kim, Young Beom; Park, Donghee; Lee, Dong Hoon; Park, Jong

doi:10.1016/j.jhazmat.2007.07.065

Cited by 241 publications

(105 citation statements)

References 25 publications

(51 reference statements)

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“…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. 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).…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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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“…It is known to inhibit nitrification in activated sludge systems (Henriques and Love, 2007;Kelly et al, 2004), with free cyanide in the form of HCN or CN À being more toxic to nitrification processes than thiocyanate and metal-cyanide complexes (Kim et al, 2007;Kjeldsen, 1999). It also has been reported to inhibit pure cultures of Nitrosomonas europaea by binding to heme P460 of hydroxylamine oxidoreductase (HAO) (Logan et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Whole‐genome transcriptional and physiological responses of Nitrosomonas europaea to cyanide: Identification of cyanide stress response genes

Park

Ely

2008

Biotech & Bioengineering

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Nitrosomonas europaea (ATCC 19718) is one of several nitrifying species that participate in the biological removal of nitrogen from wastewater by oxidizing ammonia to nitrite, the first step in nitrification. Because nitrification is quite sensitive to cyanide, a compound often encountered in wastewater treatment plants, we characterized the physiological and transcriptional responses of N. europaea cells to cyanide. The cells were extremely sensitive to low concentrations of cyanide, with NO-(2)production and ammonia-dependent oxygen uptake rates decreasing by 50% within 30 min of exposure to 1 microM NaCN. Whole-genome transcriptional responses of cells exposed to 1 microM NaCN were examined using Affymetrix microarrays to identify stress-induced genes. The transcript levels of 35 genes increased more than 2-fold while transcript levels of 29 genes decreased more than 20-fold. A gene cluster that included moeZ (NE2353), encoding a rhodanese homologue and thought to be involved in detoxification of cyanide, showed the highest up-regulation (7-fold). The down-regulated genes included genes encoding proteins involved in the sulfate reduction pathway, signal transduction mechanisms, carbohydrate transport, energy production, coenzyme metabolism, and amino acid transport.

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“…But there are problems which are inherent to an anaerobic/aerobic treatment sequence (such as the A 2 /O system) since the anaerobic transformation of toxic organic compounds is often incomplete [1][2][3][4] . The metabolites of anaerobic treatment may also be inhibitory to the methanogens themselves, resulting in declining anaerobic treatment efficiencies and adding to the load on the downstream aerobic treatment system [5][6][7][8][9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

Granulation for Coking Wastewater Treatment in a Coupled Anaerobic-Aerobic Reactor

Chen¹,

Bing-nan

2018

E3S Web Conf.

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Abstract：A coupled anaerobic-aerobic granular bio-film reactor was employed with two operation stages: StageⅠ, granular sludge was formed from digestion sludge using brewery wastewater, and Stage Ⅱ, granular sludge was acclimatized using coking wastewater. Two oxygenation methods (i.e. A and B) were employed to acclimatize the granules. For method A, dissolved O2 was supplied through a continuous oxygenation way of 800-15000mlmin -1 . And for method B, dissolved O2 was supplied of 800-15000mlmin -1 18-12 times at 20-60min intervals, 1h each time. The experimental results showed that granules could quickly form in 10d in the EGSB reactor seeded with digestion sludge and little loose granules lack of nutrition, and it was the key factor for granules forming to add little loose granules. It took only about 6 months for granules acclimation using coking wastewater. Both oxygenation methods could run well when acclimatizing the granules. However, method A could have comparatively high and stable operation effect. The actual coking wastewater had distinct inhibition effect on the granules, but the supplement of some oxygen could promote the recovery of SMA, and NaHCO3 supplement could also weaken the inhibition effect of the CWW. Method A had more strongly activity recovery ability than method B.

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Inhibitory effects of toxic compounds on nitrification process for cokes wastewater treatment

Cited by 241 publications

References 25 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

Whole‐genome transcriptional and physiological responses of Nitrosomonas europaea to cyanide: Identification of cyanide stress response genes

Granulation for Coking Wastewater Treatment in a Coupled Anaerobic-Aerobic Reactor

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