Substrates removal and growth kinetic characteristics of a heterotrophic nitrifying-aerobic denitrifying bacterium, Acinetobacter harbinensis HITLi7T at 2 °C

Zheng, Zejia; Zhang, Duoying; Li, Weiguang; Qin, Wen; Huang, Xiaofei; Lv, Longyi

doi:10.1016/j.biortech.2018.03.065

Cited by 61 publications

(14 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, compared with Acinetobacter sp. JQ1004 ( t 0 = 5.9 h) and Alcaligenes faecalis strain NR ( k = 0.24), the kinetic parameters further indicated that the heterotrophic nitrification capability of strain YH was superior to other strains . By contrast, the exponential decay equation ( R 2 = 0.49) was not qualified for describing the kinetic characteristics of heterotrophic NH 4 + –N oxidation by strain YH (Table ).…”

Section: Resultsmentioning

confidence: 96%

“…The Logistic model [Eqn (1)] was used for describing cell growth characteristics:

y (t) = \frac{a}{1 + {italicbe}^{- kt}}

where a , b and k are kinetic equation parameters.…”

Section: Methodsmentioning

confidence: 99%

“…According to the fitting results, the utilization of NO 3 − -N and NO 2 − -N by strain YH were inferior to utilization of NH 4 + -N in terms of removal rate and adaptability, probably due to high amine oxidase activity or the inhibitory effect of NO 2 − -N. 31 The result was consistent with other previous studies that NH 4 + -N was more suitable for HNAD than other nitrogen sources. 12,15 The variations of gaseous constituents during aerobic denitrification are shown in Fig. 3(c) and (d).…”

Section: Assessment Of Heterotrophic Nitrification By Strain Yhmentioning

confidence: 99%

“…Compared to autotrophic nitrifying bacteria, HNB have advantages of rapid growth rate, high activity, diverse proliferative substrates and strong anti‐shock ability . Furthermore, these HNB can conduct nitrification and denitrification simultaneously under aerobic conditions . The advantages of HNB over conventional BNRP provide the potential to intensify reactor configurations, reducing site areas and saving operation costs.…”

Section: Introductionmentioning

confidence: 99%

“…7 Furthermore, these HNB can conduct nitrification and denitrification simultaneously under aerobic conditions. 11,12 The advantages of HNB over conventional BNRP provide the potential to intensify reactor configurations, reducing site areas and saving operation costs. Besides, HNB exhibit strong performance in treating groundwater, ammonium-nitrogen (NH 4 + -N) rich sewage and heavy-metal-containing industrial sewage, demonstrating the potential engineering value of these bacteria in extreme environments.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Liu

Wang

Xiao

et al. 2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Heterotrophic nitrifying bacteria (HNB) have rapid growth rate, high activity and strong anti‐shock ability. These attributes are advantageous in engineering applications, yet the use of HNB is restricted by lack of clarity about the kinetics and metabolic mechanisms involved. Thus, nitrogen conversion characteristics, kinetics and N2O production of the HNB Pseudomonas putida YH were evaluated. RESULTS Strain YH exhibited superior heterotrophic nitrification‐aerobic denitrification (HNAD) ability in treating nitrogenous wastewater, with maximum removal rates of 10.07, 8.86 and 8.78 mg L−1 h−1 for NH4+–N, NO3−–N and NO2−–N, respectively. Mass balance analysis demonstrated that the removed TN was mainly due to bacterial assimilation (53–55%) and conversion into gaseous N2 (34–39%), instead of nitrification intermediate accumulation and N2O emission. In addition, the kinetics of nitrogen degradation and cellular growth of strain YH exactly conformed to the modified Gompertz equation and the Logistic equation, respectively. Moreover, strain YH showed excellent adaptability to variations of temperature, pH, C:N ratio and initial NH4+–N concentration in terms of nitrogen removal and N2O emission. The highest NH4+–N removal rate was obtained at pH 7.0, temperature 30 °C and C:N ratio of 15. Furthermore, the heterotrophic nitrification ability was just partially deteriorated after the addition of inhibitors, which further proved the multiple metabolic pathways of heterotrophic nitrification by strain YH. CONCLUSION The results demonstrated that strain YH exhibited excellent abilities of HNAD, N2O emission control and tolerance to adverse conditions, indicating that strain YH can be an effective candidate for treating nitrogenous wastewater without secondary pollution. © 2019 Society of Chemical Industry

show abstract

Section: Resultsmentioning

confidence: 96%

“…The Logistic model [Eqn (1)] was used for describing cell growth characteristics:

y (t) = \frac{a}{1 + {italicbe}^{- kt}}

where a , b and k are kinetic equation parameters.…”

Section: Methodsmentioning

confidence: 99%

Section: Assessment Of Heterotrophic Nitrification By Strain Yhmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Liu

Wang

Xiao

et al. 2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

Characteristics and mechanism of heterotrophic nitrification/aerobic denitrification in a novel Halomonas piezotolerans strain

Dong

et al. 2021

J Basic Microbiol

View full text Add to dashboard Cite

A strain was isolated from an activated sludge system and identified as Halomonas piezotolerans HN2 in this study, which is the first strain in H. piezotolerans with the capability of heterotrophic nitrification and aerobic denitrification. Strain HN2 showed the maximum nitrogen removal rate of 9.10 mg/L/h by utilizing ammonium at the salinity of 3.0%. Under saline environment, HN2 could remove nitrogen efficiently in neutral and slightly alkaline environments, with the carbon sources of sodium succinate and sodium citrate and the C/N ratio of 15-20, and the maximum removal efficiencies of ammonium, nitrite, and nitrate were 100%, 96.35%, and 99.7%, respectively.The genomic information revealed the presence of amoA, napA, and nosZ genes in strain HN2, and the target bands of nirS were obtained via a polymerase chain reaction. Therefore, we inferred that ammonium was mainly utilized for the growth of strain HN2 through assimilation, and another part of the initial ammonium was converted into nitrate through nitrification, and then into gaseous nitrogen through denitrification. This report indicated the potential application of strain HN2 and other nitrifying and denitrifying Halomonas strains in the removal of nitrogen pollution in marine-related environments and also implies the important role of Halomonas in the nitrogen cycle process of the ocean.

show abstract

Effect of sulfamethoxazole on nitrate removal by simultaneous heterotrophic aerobic denitrification

Progress

Zhao

Wang

et al. 2022

Water Environment Research

View full text Add to dashboard Cite

The increase in mariculture activities worldwide has not only led to a rise of nitrogen compounds in the ecosystem but has also intensified the accumulation of antibiotics in both terrestrial and marine environments. This study focused on the effect of typical antibiotics, specifically sulfamethoxazole (SMX) on nitrate removal from mariculture wastewater by aerobic denitrification process; an aerobic denitrification system feeding with 148.2 mg/L COD, 8.59 mg/L nitrate, 0.72 mg/L nitrite, and 4.75 mg/L ammonium was set up. The hydraulic retention time (HRT) was 8 h. As the aerobic bioreactor started up successfully without SMX dosage, an excellent removal of ammonium, nitrite, and nitrate was achieved at 91.35%, 93.33%, and 88.51%, respectively; the corresponding effluent concentrations were 0.41 mg/L, 0.048 mg/L, and 0.96 mg/L. At the influent SMX doses of 0, 1, 5, and 10 mg/L, the COD removal reached 96.91%, 96.27%, 88.69%, and 85.89%, resulting in effluent concentrations of 4.53, 5.45, 17.38, and 20.6 mg/L, respectively. Nitrification was not inhibited by SMX dosage. However, aerobic denitrification was inhibited by 10 mg/L SMX. Proteobacteria was the most abundant phylum, and surprisingly its abundance increased with the increase in SMX concentration. An excellent SMX degradation was noted at initial SMX dosages of 1, 5, and 10 mg/L; the removal rate was 100%,100%, and 99.8%, respectively. The SMX degrading genera Comamonas sp., Acinetobacter sp., and Thauera sp. are of great validity to wastewater engineers because they have demonstrated efficiency in simultaneous heterotrophic aerobic denitrification and antibiotic degradation as well as COD removal. Practitioner Points Nitrification was not inhibited by increase in SMX dosage. An increase in SMX dosage inhibited aerobic denitrification. COD removal was not affected by increased SMX dosage. Comamonas, Acinetobacter, and Thauera had high efficiency in COD removal and SMX degradation.

show abstract

Substrates removal and growth kinetic characteristics of a heterotrophic nitrifying-aerobic denitrifying bacterium, Acinetobacter harbinensis HITLi7T at 2 °C

Cited by 61 publications

References 43 publications

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Characteristics and mechanism of heterotrophic nitrification/aerobic denitrification in a novel Halomonas piezotolerans strain

Effect of sulfamethoxazole on nitrate removal by simultaneous heterotrophic aerobic denitrification

Contact Info

Product

Resources

About

Substrates removal and growth kinetic characteristics of a heterotrophic nitrifying-aerobic denitrifying bacterium, Acinetobacter harbinensis HITLi7T at 2 °C

Cited by 61 publications

References 43 publications

Kinetic characteristics and N2O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Kinetic characteristics and N2O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Characteristics and mechanism of heterotrophic nitrification/aerobic denitrification in a novel Halomonas piezotolerans strain

Effect of sulfamethoxazole on nitrate removal by simultaneous heterotrophic aerobic denitrification

Contact Info

Product

Resources

About

Substrates removal and growth kinetic characteristics of a heterotrophic nitrifying-aerobic denitrifying bacterium, Acinetobacter harbinensis HITLi7T at 2 °C

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions