Enhanced phenol degradation by Pseudomonas sp. SA01: Gaining insight into the novel single and hybrid immobilizations

Mollaei, Monir; Abdollahpour, Saeeide; Atashgahi, Siavash; Abbasi, Habib; Masoomi, Fatemeh; Rad, Iman; Lotfi, Abbas Sahebghadam; Zahiri, Hossein Shahbani; Vali, Hojatollah; Noghabi, Kambiz Akbari

doi:10.1016/j.jhazmat.2009.10.002

Cited by 85 publications

(30 citation statements)

References 41 publications

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“…Many immobilized microorganisms have been successfully used for bioremediation of crude oil (Liang et al, 2009). Considering the broad chioces, low cost, simple process and less impact on microbial activity (Oh et al, 2000;Lee et al, 2010), immobilization have been proved to be an effective strategy to apply functional microorganism for bioremediation (Wang et al, 2007;Mollaei et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Use of bacteria-immobilized cotton fibers to absorb and degrade crude oil

Meng

Liu

Chen

et al. 2014

International Biodeterioration & Biodegradation

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a b s t r a c tUsing enrichment culture technique, two isolates that brought a significant degradation and dispersion of crude oil were obtained from contaminated sediments of the Bohai Bay, China. 16S rRNA gene sequencing and phylogenetic analysis indicated that the two bacterial strains affiliated with the genera Vibrio and Acinetobacter. Subsequently, the bacterial cells were immobilized on the surface of cotton fibers. Cotton fibers were used as crude oil sorbent as well as a biocarrier for bacteria immobilization. Among the two isolates, the marine bacteria Acinetobacter sp. HC8-3S showed a strong binding to the cotton fibers, possibly enhanced through extracellular dispersant excreted by Acinetobacter sp. HC8-3S. Both planktonic and immobilized bacteria showed relatively high biodegradation (>60%) of saturated hydrocarbons fraction of crude oil, in the pH range of 5.6e8.6. The degradation activities of planktonic and immobilized bacteria were not affected significantly when the NaCl concentration reached 70 g/L. The immobilized bacterial cells exhibited an enhanced biodegradation of crude oil. The efficiency of saturated hydrocarbons degradation by the immobilized bacterial cells increased about 30% compared to the planktonic bacterial cells.

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Section: Introductionmentioning

confidence: 99%

Use of bacteria-immobilized cotton fibers to absorb and degrade crude oil

Meng

Liu

Chen

et al. 2014

International Biodeterioration & Biodegradation

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“…The highest degradation rates were observed from isolates of P. aeruginosa derived from pharmaceutical wastewater (Afzal et al 2007) along with a Pseudomonas sp. (Mollaei et al 2010) in water spiked with phenol.…”

Section: Isolation Of Phenol-degrading Bacteriamentioning

confidence: 99%

Bioremediation of Phenol-Contaminated Industrial Wastewater Using a Bacterial Consortium—from Laboratory to Field

Poi

Aburto‐Medina

Mok³

et al. 2017

Water Air Soil Pollut

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Singapore is an island city state with an economy dependent on petrochemicals and shipping, but with severely limited water resources. This study aimed to establish a suitable methodology specifically for the translation of a laboratory-scale system to an industrial scale for the treatment of phenol-contaminated wastewater. A habitat-specific microbial consortium was developed and reconstituted from 22 pure cultures dominated by Acinetobacter sp., Bacillus sp. and Pseudomonas sp. to form a synthetic biofilm-forming community with the capacity to degrade phenol-contaminated wastewater. The laboratory experiment was scaled-up to 400 m 3 by using biotrickling reactors to reduce the phenol level from 407 mg L −1 to below detection limit over 104 days incubation. The results showed that the microbial consortia could also reduce the toxicity of the wastewater while degrading the phenol and lowering the wastewater COD. Further, this approach could be translated into the field without the need for a purposebuilt primary treatment facility preventing the generation of excessive biomass and eliminating the need for sludge disposal.

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“…Phenol is toxic upon ingestion, contact, or inhalation, and it is recommended that human exposure to phenol does not exceed 20 mg on average per day. Also, phenol is toxic to fish and can be lethal at concentrations of 5-25 ppm (Saha et al 1999;Mollaei et al 2010). Therefore, treatment of phenol effluents is critical to maintaining both human and wildlife environments.…”

Section: Introductionmentioning

confidence: 99%

Study of phenol biodegradation using Bacillus amyloliquefaciens strain WJDB-1 immobilized in alginate–chitosan–alginate (ACA) microcapsules by electrochemical method

Zhang

Niu

et al. 2011

Biodegradation

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An aerobic microorganism with an ability to utilize phenol as sole carbon and energy source was isolated from phenol-contaminated wastewater samples. The isolate was identified as Bacillus amyloliquefaciens strain WJDB-1 based on morphological, physiological, and biochemical characteristics, and 16S rDNA sequence analysis. Strain WJDB-1 immobilized in alginate-chitosan-alginate (ACA) microcapsules could degrade 200 mg/l phenol completely within 36 h. The concentration of phenol was determined using differential pulse voltammetry (DPV) at glassy carbon electrode (GCE) with a linear relationship between peak current and phenol concentration ranging from 2.0 to 20.0 mg/l. Cells immobilized in ACA microcapsules were found to be superior to the free suspended ones in terms of improving the tolerance to the environmental loadings. The optimal conditions to prepare microcapsules for achieving higher phenol degradation rate were investigated by changing the concentrations of sodium alginate, calcium chloride, and chitosan. Furthermore, the efficiency of phenol degradation was optimized by adjusting various processing parameters, such as the number of microcapsules, pH value, temperature, and the initial concentration of phenol. This microorganism has the potential for the efficient treatment of organic pollutants in wastewater.

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Enhanced phenol degradation by Pseudomonas sp. SA01: Gaining insight into the novel single and hybrid immobilizations

Cited by 85 publications

References 41 publications

Use of bacteria-immobilized cotton fibers to absorb and degrade crude oil

Use of bacteria-immobilized cotton fibers to absorb and degrade crude oil

Bioremediation of Phenol-Contaminated Industrial Wastewater Using a Bacterial Consortium—from Laboratory to Field

Study of phenol biodegradation using Bacillus amyloliquefaciens strain WJDB-1 immobilized in alginate–chitosan–alginate (ACA) microcapsules by electrochemical method

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