Bioflocculant production and biosorption of zinc and lead by a novel bacterial species, Achromobacter sp. TERI-IASST N, isolated from oil refinery waste

Subudhi, Sanjukta; Batta, Neha; Pathak, Mihirjyoti; Bisht, Varsha; Devi, Arundhuti; Lal, Banwari; khulifah, Bader Al

doi:10.1016/j.chemosphere.2014.04.050

Cited by 40 publications

(14 citation statements)

References 20 publications

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“…Similarly, the highest flocculating activity observed with utilization of organic nitrogen source (peptone) by our test organism could be attributed to the availability of vitamins and trace elements. 28 Studies have reported that certain bioflocculant producing strains have effectively utilized peptone or yeast extract as sources of nitrogen, thereby validating peptone as one of the best and cost effective nitrogen sources. 4 , 27 Carbon and nitrogen source requirement differs with different strains.…”

Section: Discussionmentioning

confidence: 99%

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Bioflocculant production from Streptomyces platensis and its potential for river and waste water treatment

Agunbiade

Pohl

Ashafa

2018

Brazilian Journal of Microbiology

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A bacterium isolated from Sterkfontein dam was confirmed to produce bioflocculant with excellent flocculation activity. The 16S rDNA nucleotide sequence analyses revealed the bacteria to have 99% similarity to Streptomyces platensis strain HBUM174787 and the sequence was deposited in the Genbank as Streptomyces platensis with accession number FJ 486385.1. Culture conditions for optimal production of the bioflocculant included glucose as a sole carbon source, resulting in flocculating activity of 90%. Other optimal conditions included: peptone as nitrogen source; presence of Mg2+ as cations and inoculum size of 1.0% (v/v) at neutral pH of 7. Optimum dose of the purified bioflocculant for the clarification of 4 g/L kaolin clay suspension at neutral pH was 0.2 mg/mL. Energy Dispersive X-ray analysis confirmed elemental composition of the purified bioflocculant in mass proportion (%w/w): carbon (21.41), oxygen (35.59), sulphur (26.16), nitrogen (0.62) and potassium (7.48). Fourier Transform Infrared Spectroscopy (FTIR) indicated the presence of hydroxyl, carboxyl, methoxyl and amino group in the bioflocculant. The bioflocculant produced by S. platensis removed chemical oxygen demand (COD) in river water and meat processing wastewater at efficiencies of 63.1 and 46.6% respectively and reduced their turbidity by 84.3 and 75.6% respectively. The high flocculating rate and removal efficiencies displayed by S. platensis suggests its industrial application in wastewater treatment.

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Section: Discussionmentioning

confidence: 99%

“…was attained at a weak acidic pH 6. 28 On the other hand, the bioflocculant produced by Virgibacillus sp. with flocculating activity of 85.8% was attained at the pH 10.…”

Section: Discussionmentioning

confidence: 99%

Bioflocculant production from Streptomyces platensis and its potential for river and waste water treatment

Agunbiade

Pohl

Ashafa

2018

Brazilian Journal of Microbiology

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“…A total of 1.0 L culture broth was then subjected to centrifugation (6000 rpm, 30 min, 20°C) and cell-free supernatant was used for further study. The purification of bioflocculant was performed using ethanol precipitation method as reported earlier by Subudhi et al (2014). The precipitate obtained was dissolved in Milli-Q water and dialyzed overnight against Milli-Q water at 4°C and constant stirring (100 rpm).…”

Section: Methodsmentioning

confidence: 99%

Exploration of Performance Kinetics and Mechanism of Action of a Potential Novel Bioflocculant BF-VB2 on Clay and Dye Wastewater Flocculation

Bisht

Lal

2019

Front. Microbiol.

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This study explores production of an efficient bioflocculant; BF-VB2, by strain Bacillus sp. TERI VB2 and proposes its potential application in wastewater treatment. One milligram of BF-VB2 can effectively flocculate 1980.0 mg ± 5.0 mg of kaolin particles leading to 99.0% ± 0.5% enhancement in flocculation activity and 99.6% ± 1.0% reduction in turbidity; in less time. BF-VB2 when applied for treatment of textile dyeing industrial wastewater revealed reduction in dye color (82.78% ± 3.03%), COD (92.54% ± 0.24%), TSS (73.59% ± 0.71%), and chloride ions (81.90% ± 0.716%). The best-fit kinetic model (for both COD removal, and dye decolorization) was pseudo-first order with regression coefficient of 0.98 and 0.95, and rate constant of 4.33 × 10 -2 and 1.83 × 10 2 , respectively. Bridging due to presence of surface charges have been proposed as flocculation mechanism. From results obtained during test-tube studies, flocculation in larger volumes (0.01–5.0 L) was also performed to intend taking up BF-VB2 for in situ industrial wastewater treatment. This eco-friendly polysaccharide bioflocculant had longer shelf-life, stability to pH and temperature, cation-independence, and emerged to be more efficient than other flocculants assessed. This study proposed BF-VB2 as a potential natural flocculant candidate for industrial application.

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“…On the other hand, microorganisms such as Rhodococcus are known to utilize nhexadecane more efficiently at low temperatures through biosurfactant or bioflocculant production and in the process, can degrade linear and branched alkanes 8 . has also been reported recently as a potential source for bioflocculant production 9 . Achromobacter sp.…”

Section: Introductionmentioning

confidence: 99%

Production of a non-cytotoxic bioflocculant by a bacterium utilizing a petroleum hydrocarbon source and its application in heavy metal removal

et al. 2015

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A bacterium isolated from the activated sludge of an oil refinery of Assam, India retained efficient bioflocculating activity through production of bioflocculant when it was grown on crude oil amended media avoided of any other carbon source.The bioflocculating activity gained from the optimized media broth was 86.2%, which could be enhanced up to 89.1% with the purified bioflocculant. In course of bioflocculant production, the bacterium utilized about 77% of the petroleum hydrocarbons after incubation for 168 h when the activity was found to be the highest. The bioflocculant was efficient in flocculating Ni 2+ , Zn 2+ , Cd 2+ , Cu 2+ and Pb 2+ . The bioflocculant was characterized as a glycoprotein complex by biochemical tests, FT-IR, SEM-EDX and LC/MS analyses. The bioflocculant showed negligible cytotoxicity on testing with L292 cell line indicating tremendous possibility of its use in bioremediation.

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Bioflocculant production and biosorption of zinc and lead by a novel bacterial species, Achromobacter sp. TERI-IASST N, isolated from oil refinery waste

Cited by 40 publications

References 20 publications

Bioflocculant production from Streptomyces platensis and its potential for river and waste water treatment

Bioflocculant production from Streptomyces platensis and its potential for river and waste water treatment

Exploration of Performance Kinetics and Mechanism of Action of a Potential Novel Bioflocculant BF-VB2 on Clay and Dye Wastewater Flocculation

Production of a non-cytotoxic bioflocculant by a bacterium utilizing a petroleum hydrocarbon source and its application in heavy metal removal

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