Kinetics of high strength phenol degradation using Bacillus brevis

Arutchelvan, V.; Kanakasabai, V.; Elangovan, R.; Nagarajan, S.; Muralikrishnan, V.

doi:10.1016/j.jhazmat.2005.08.040

Cited by 175 publications

(87 citation statements)

References 21 publications

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“…Further experiments will answer the questions whether medium stress or immobilisation of these cells respectively could influence the partially expected biodegrading capacity. For different Bacillus genus (B. brevis and B. ceris) biodegration of phenol has been specified [7,21,22]. The degradation capacity and rate of R. erythropolis was the highest of selected organisms ( Table 1).…”

Section: Discussionmentioning

confidence: 99%

Biorefinery meets biofermentation to produce food additives

Kilic

Bach

2013

WIT Transactions on Ecology and the Environment

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The overall goal of the project was to transfer the concept of biorefinery to a biofermentation process to produce e.g. nutrients, enzymes or biopolymers. The feasibility of the strategy was proven in a fermentation process with industrial wastewater containing phenol as a toxic pollutant. The degrading experiments were done with native bacteria and fungi which have been selected according to literature in consideration of degrading attitude, degrading rates and metabolic properties. The second step was to answer the question of to what extent value creation through fermentation of the selected organisms is possible. Questions on how to carry out the procedure, the localisation of the product (intracellular or extra cellular) and its traceability were also pursued. Possible products have been analysed. As a result thereof an enzyme assay has been carried out to verify the units of an extra cellular α-amylase. The third step was to improve the fermentation process through optimisation of parameters like O 2 -transfer and feeding strategies for the minimal substrate. It could be shown that produced biomass could be doubled. Further experiments are necessary to provide for optimised economical process and product utilisation.

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Section: Discussionmentioning

confidence: 99%

Biorefinery meets biofermentation to produce food additives

Kilic

Bach

2013

WIT Transactions on Ecology and the Environment

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“…In hexavalent chromate reduction to the trivalent state by Bacillus sp. (Arutchelvan et al 2006) and Enterobacter cloacae strain H01 (Rege et al 1997), the metal ions of mercury and copper were strong inhibitors. The supposed target of these metals was chromate reductase.…”

Section: Effect Of Heavy Metalsmentioning

confidence: 99%

“…Biodegradation of phenol and phenolic compounds by microorganisms has long been an object of research. Bacteria that could degrade phenol and phenolic compounds include Pseudomonas species (Folsom et al 1990;Tomasi et al 1995;Aravindhan et al 2014;Hasan & Jabeen 2015), Bacillus brevis (Arutchelvan et al 2006), Alcaligenes sp. (Bai et al 2007), Ochrobactrum sp.…”

Section: P H E N O L I C S a S C A R B O N S O U R C E S F O R Molybdmentioning

confidence: 99%

ISOLATION AND CHARACTERIZATION OF A MOLYBDENUM-REDUCING AND PHENOLIC- AND CATECHOL-DEGRADING Enterobacter sp. STRAIN SAW-2

Sabullah

Rahman²,

Ahmad³

et al. 2017

BIOTROPIA

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Molybdenum is an emerging pollutant worldwide. The objective of this study is to isolate molybdenum-reducing bacterium with the ability to grow on phenolic compounds (phenol and catechol). The screening process was carried out on a microplate. The bacterium reduced molybdenum in the form of sodium molybdate to molybdenum blue (Mo-blue). The bacterium required a narrow pH range for optimal reduction of molybdenum, i.e. between pH 6.3 and o 6.8, with temperature between 34 and 37 C. Molybdate reduction to Mo-blue was best supported by glucose as the carbon source. However, both phenol and catechol could not support molybdate reduction. Other requirements for molybdate reduction included sodium molybdate concentrations between 15 and 30 mM, and phosphate concentration of 5.0 mM. The bacterium exhibited a Mo-blue absorption spectrum with a shoulder at 700 nm and a maximum peak near the infrared region at 865 nm. The Mo-reducing bacterium was partially identified as Enterobacter sp. strain Saw-2. The capability of this bacterium to grow on toxic phenolic compounds and to detoxify molybdenum made it a significant agent for bioremediation.

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“…Howevver, the carcinogenicity of phenol is inadequate for an assessment of the potential for phenol to cause cancer in humans (EPA, 2002), biological processes are widely used to remove phenol from different polluted areas (Arutchelvan et al, 2006;Geng et al, 2006 andChristen et al, 2012), in addition to several physical and chemical remediation methods such as polymerization, photodecomposition, membrane based separation (Kulkarni and Kaware, 2013), electro coagulation (El-Ashtoukhy et al, 2006), extraction (Khanahmedzadeh et al, 2012), advanced oxidation processes (Saeed and Ilyas, 2012), adsorption and ion exchange method (Qadeer andRehan, 2002 andKulkarni andKaware, 2013).…”

Section: Article Infomentioning

confidence: 99%