New tolerant strains of purple nonsulfur bacteria for hydrogen production in a two-stage integrated system

Khusnutdinova, Anna N.; Ovchenkova, Evgeniya P.; Khristova, A.; Laurinavichene, Tatyana V.; Shastik, Evgeny; Liu, Jianguo; Tsygankov, Anatoly A.

doi:10.1016/j.ijhydene.2012.02.003

Cited by 21 publications

(7 citation statements)

References 30 publications

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“…The energy plays a very important role in microbe’s capability in the degradation of organic pollutants. Nitrogenase and hydrogenase are the key enzymes in energy metabolism of PSB ( Khusnutdinova et al, 2012 ; Lo et al, 2012 ). Due to the presence of [Fe–S] and [Fe–Fe] at the active sites of the nitrogenase and hydrogenase, respectively, an addition of Fe 3 O 4 NP can improve their enzymatic activities.…”

Section: Resultsmentioning

confidence: 99%

Bioremediation of Wastewater by Iron Oxide-Biochar Nanocomposites Loaded with Photosynthetic Bacteria

et al. 2017

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It has been reported that bacteria-mediated degradation of contaminants is a practical and innocuous wastewater treatment. In addition, iron oxide nanoparticles (NP) are wastewater remediation agents with great potentials due to their strong adsorption capacity, chemical inertness and superparamagnetism. Therefore, a combination of NPs and microbes could produce a very desirable alternative to conventional wastewater treatment. For this purpose, we first prepared Fe3O4/biochar nano-composites, followed by loading photosynthetic bacteria (PSB) onto them. It was found that Fe3O4/biochar nano-composites exhibited a high adsorption capacity for PSB (5.45 × 109 cells/g). The efficiency of wastewater pollutants removal by this PSB/Fe3O4/biochar agent was then analyzed. Our results indicated that when loaded onto Fe3O4/biochar nano-composites, PSB’s nutrient removal capability was significantly enhanced (P < 0.05). This agent removed 83.1% of chemical oxygen demand, 87.5% of NH4+, and 92.1% of PO43- from the wastewater in our study. Our experiments also demonstrated that such composites are outstanding recyclable agents. Their nutrient removal capability remained effective even after five cycles. In conclusion, we found the PSB/Fe3O4/biochar composites as a very promising material for bioremediation in the wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Bioremediation of Wastewater by Iron Oxide-Biochar Nanocomposites Loaded with Photosynthetic Bacteria

et al. 2017

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“…This improvement of CCA removal may have resulted from the triggering of the bacterial enzymatic activity, and growth and metabolism by iron ions of the composite. The simulation of enzymatic activity was due to the presence of Fe-Fe bond inside the bacterial hydrogenase enzyme [32]. Therefore, the presence of iron nanoparticles enhances the enzymatic activity.…”

Section: Pollutants Removalmentioning

confidence: 99%

Simultaneous Removal of Calconcarboxylic Acid, NH4+ and PO43− from Pharmaceutical Effluent Using Iron Oxide-Biochar Nanocomposite Loaded with Pseudomonas putida

2019

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In the current study, the Fe2O3/biochar nanocomposite was synthesized through a self-assembly method, followed by the immobilization of Pseudomonas putida (P. putida) on its surface to produce the P. putida/Fe2O3/biochar magnetic innovative nanocomposite. The synthesized nanocomposite was characterized using different techniques including X-ray diffraction, transmission electron microscopy (TEM), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FT-IR). Then, the efficiencies of this material to remove calconcarboxylic acid (CCA) organic dye, ammonium ions (NH4+), and phosphate ions (PO43−) from industrial wastewater were analyzed. The removal rates of up to 82%, 95%, and 85% were achieved for CCA dye, PO43−, NH4+, respectively, by the synthesized composite. Interestingly, even after 5 cycles of reuse, the prepared nanocomposite remains efficient in the removal of pollutants. Therefore, the P. putida/Fe3O4/biochar composite was found to be an actual talented nanocomposite for industrial wastewater bioremediation.

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“…The strain of purple bacterium R. sphaeroides N7 [14] was grown on Ormerod medium [15] with 10 mM ammonium sulfate and 20 mM lactate (30 W/m 2 , 30 C).…”

Section: Bacterial Strains and Mediamentioning

confidence: 99%

Different types of H 2 photoproduction by starch-utilizing co-cultures of Clostridium butyricum and Rhodobacter sphaeroides

Laurinavichene

Tsygankov

2016

International Journal of Hydrogen Energy

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New tolerant strains of purple nonsulfur bacteria for hydrogen production in a two-stage integrated system

Cited by 21 publications

References 30 publications

Bioremediation of Wastewater by Iron Oxide-Biochar Nanocomposites Loaded with Photosynthetic Bacteria

Bioremediation of Wastewater by Iron Oxide-Biochar Nanocomposites Loaded with Photosynthetic Bacteria

Simultaneous Removal of Calconcarboxylic Acid, NH4+ and PO43− from Pharmaceutical Effluent Using Iron Oxide-Biochar Nanocomposite Loaded with Pseudomonas putida

Different types of H 2 photoproduction by starch-utilizing co-cultures of Clostridium butyricum and Rhodobacter sphaeroides

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