Aerobic denitrification using Bacillus pumilus, Arthrobacter sp., and Streptomyces lusitanus: Novel aerobic denitrifying bacteria

Elkarrach, Karima; Merzouki, Mohammed; Atia, Fatima; Laidi, Omar; Benlemlih, Mohammed

doi:10.1016/j.biteb.2021.100663

Cited by 17 publications

(10 citation statements)

References 21 publications

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“…As shown in Figure 4B , strain JM10B5a T could grow quite well when glucose served as the carbon source (OD 600 of 0.52), but it performed the relatively high

-N removal of 100% when sodium acetate served as the carbon source. These results indicated that sodium acetate was the optimum carbon source for the performance of denitrification for strain JM10B5a T , which was consistent with Bacillus pumilus, Arthrobacter sp., and Streptomyces lusitanus (Elkarrach et al, 2021 ). Therefore, sodium acetate was employed in the following experiments.…”

Section: Resultsmentioning

confidence: 99%

Pseudomonas oligotrophica sp. nov., a Novel Denitrifying Bacterium Possessing Nitrogen Removal Capability Under Low Carbon–Nitrogen Ratio Condition

Zhang

Yao

et al. 2022

Front. Microbiol.

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Pseudomonas is a large and diverse genus within the Gammaproteobacteria known for its important ecological role in the environment. These bacteria exhibit versatile features of which the ability of heterotrophic nitrification and aerobic denitrification can be applied for nitrogen removal from the wastewater. A novel denitrifying bacterium, designated JM10B5aT, was isolated from the pond water for juvenile Litopenaeus vannamei. The phylogenetic, genomic, physiological, and biochemical analyses illustrated that strain JM10B5aT represented a novel species of the genus Pseudomonas, for which the name Pseudomonas oligotrophica sp. nov. was proposed. The effects of carbon sources and C/N ratios on denitrification performance of strain JM10B5aT were investigated. In addition, the results revealed that sodium acetate was selected as the optimum carbon source for denitrification of this strain. Besides, strain JM10B5aT could exhibit complete nitrate removal at the low C/N ratio of 3. Genomic analyses revealed that JM10B5aT possessed the functional genes including napA, narG, nirS, norB, and nosZ, which might participate in the complete denitrification process. Comparative genomic analyses indicated that many genes related to aggregation, utilization of alkylphosphonate and tricarballylate, biosynthesis of cofactors, and vitamins were contained in the genome of strain JM10B5aT. These genomic features were indicative of its adaption to various niches. Moreover, strain JM10B5aT harbored the complete operons required for the biosynthesis of vibrioferrin, a siderophore, which might be conducive to the high denitrification efficiency of denitrifying bacterium at low C/N ratio. Our findings demonstrated that the strain JM10B5aT could be a promising candidate for treating wastewater with a low C/N ratio.

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“…As shown in Figure 4B , strain JM10B5a T could grow quite well when glucose served as the carbon source (OD 600 of 0.52), but it performed the relatively high

Section: Resultsmentioning

confidence: 99%

Pseudomonas oligotrophica sp. nov., a Novel Denitrifying Bacterium Possessing Nitrogen Removal Capability Under Low Carbon–Nitrogen Ratio Condition

Zhang

Yao

et al. 2022

Front. Microbiol.

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“…Although, higher nitrate reduction was achieved with the increased pH values of 7.5, 8.0 and 9.0, accumulation of nitrite increased significantly (Glass & Silverstein, 1998). A Bacillus pumilus strain removed 99.7% of NO 3 -nitrogen in a 70 mg/L initial NO 3 containing medium (Elkarrach et al, 2021). In another study, 89.4% of nitrate removal was reported by Bacillus sp.…”

Section: Optimization Of the Percentage Of The Carbon Sources For Aer...mentioning

confidence: 87%

Screening of potential aerobic denitrifying bacteria for nitrate removal from water

Kirisan¹,

Gnanavelrajah²,

Ratnayake³

2022

J. Natn. Sci. Foundation Sri Lanka

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Nitrate pollution in groundwater is a common problem in areas where inorganic fertilizer is used to a large extent. This situation seriously affects communities that use ground water as their main source of drinking water and for many other purposes. Therefore, finding an efficient and cost effective system for the removal of nitrate from groundwater is an urgent necessity. The present study was aimed at identifying aerobic bacteria isolated from various soils and water sources and to test their potential for reducing nitrate in groundwater. The bacterial isolates (n = 128) were screened for nitrate reduction by various processes in nutrient broth and in mineral salt medium containing glucose and starch, using KNO 3 as the nitrate substrate. Liberated gases during nitrate reduction were analyzed using gas chromatography. Out of 128 morphologically different isolates, two strains, namely Paracoccus sp. (A2) and Bacillus sp. (A19), were selected for further analysis on the basis of their performance for water treatment. The nitrate reduction percentages of A2 and A19 were within the range of 59.63-100% and 86.67-100%, respectively. Gas chromatography results indicated that these two strains liberated a higher percentage of N 2 (68 -90%) compared to N 2 O (5-13%) and CO 2 (traces) , while reducing the amount of nitrate. These results confirmed that A2 and A19 have the potential to be used in bioremediation of nitrate contaminated groundwater.

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“…This study showed that aluminum sulfate is more effective than ferric chloride in terms of COD removal [48]. However, [35] has used ferric chloride as a coagulant following by the treatment through the SBR. This combined treatment gave 99.89%, 99.98%, and 99.99% respectively for the COD, the sulfide ions, and the total chromium, and then the treated effluent was well conformed to standards.…”

Section: Coupled Treatmentsmentioning

confidence: 91%

“…In recent decades, this phenomenon has been very attractive and advanced according to various studies. The literature showed more than 37 aerobic denitrifying bacteria, where Bacillus pulminus, Arthrobacter sp., and Streptomyces lusitanus were the latest shown [35].…”

Section: Sewage -Recent Advances New Perspectives and Applicationsmentioning

confidence: 99%

Biological versus Physicochemical Technologies for Industrial Sewage Treatment: Which Is the Most Efficient and Inexpensive?

Elkarrach¹,

Atia²,

Omor³

et al. 2022

Sewage - Recent Advances, New Perspectives and Applications

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Industries play a major role in the development of countries′ economy. However, they are known as the biggest source of water pollution in the whole world. In fact, several industries use a huge amount of water in their manufacturing operations, and then, they reject a large volume of wastewaters such as tanneries, brassware, olive mills … etc. The sewage of these industries may contain organic/inorganic matters or toxic components that harm human health and the environment. Therefore, the treatment of these effluents is necessary. For that, there are many treatment processes, including biological and physicochemical processes or both. The choice of adequate process is depending on many reasons, especially on the biodegradability degree of each effluent, as well as the presence of recalcitrant pollutants. Nevertheless, biological technologies, particularly bioremediation, are recently an emerging technology for the elimination of recalcitrant pollutants like heavy metals. Furthermore, these biotechnologies are simple, efficient, eco-friendly and inexpensive. Therefore, this environmental biotechnology may be a new approach for the treatment of industrial sewage, so, it can successfully replace physicochemical technologies that are very expensive.

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Aerobic denitrification using Bacillus pumilus, Arthrobacter sp., and Streptomyces lusitanus: Novel aerobic denitrifying bacteria

Cited by 17 publications

References 21 publications

Pseudomonas oligotrophica sp. nov., a Novel Denitrifying Bacterium Possessing Nitrogen Removal Capability Under Low Carbon–Nitrogen Ratio Condition

Pseudomonas oligotrophica sp. nov., a Novel Denitrifying Bacterium Possessing Nitrogen Removal Capability Under Low Carbon–Nitrogen Ratio Condition

Screening of potential aerobic denitrifying bacteria for nitrate removal from water

Biological versus Physicochemical Technologies for Industrial Sewage Treatment: Which Is the Most Efficient and Inexpensive?

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