Microbial acetate oxidation in horizontal rotating tubular bioreactor

Slavica, Anita; Šantek, Božidar; Novak, Srđan; Marić, Vladimir

doi:10.1007/bf02703415

Cited by 12 publications

(25 citation statements)

References 21 publications

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“…Systems for sampling of broth and biofilm were placed along the bioreactor at 0.40-m intervals ( Fig. 1) [17]. The device for biofilm thickness determination was made of flat plate (dimension 0.02 9 0.02 m) fixed on the cover of the sampling place.…”

Section: Bioreactor and Experimental Setupmentioning

confidence: 99%

Mathematical modeling of Fe(II), Cu(II), Ni(II) and Zn(II) removal in a horizontal rotating tubular bioreactor

Rezić

Zeiner

Šantek

et al. 2011

Bioprocess Biosyst Eng

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Industrial wastewaters polluted with toxic heavy metals are serious ecological and environmental problem. Therefore, in this study multi-heavy metals (Fe(2+), Cu(2+), Ni(2+) and Zn(2+)) removal process with mixed microbial culture was examined in the horizontal rotating tubular bioreactor (HRTB) by different combinations of process parameters. Hydrodynamic conditions and biomass sorption capacity have main impact on the removal efficiency of heavy metals: Fe(2+) 95.5-79.0%, Ni(2+) 92.7-54.8%, Cu(2+) 87.7-54.9% and Zn(2+) 81.8-38.1%, respectively. On the basis of experimental results, integral mathematical model of removal heavy metals in the HRTB was established. It combines hydrodynamics (mixing), mass transfer and kinetics to define bioprocess conduction in the HRTB. Mixing in the HRTB was described by structured cascade model and metal ion removal by two combined diffusion-adsorption models, respectively. For Langmuir model, average variances between experimental and simulated concentrations of metal ions were in the range of 1.22-10.99 × 10(-3) and for the Freundlich model 0.12-3.98 × 10(-3), respectively. On the basis of previous facts, it is clear that developed integral bioprocess model with Freundlich model is more efficient in the prediction of concentration of metal ions in the HRTB. Furthermore, the results obtained also pointed out that the established model is at the same time accurate and robust and therefore it has great potential for use in the scale-up procedure.

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Section: Bioreactor and Experimental Setupmentioning

confidence: 99%

Mathematical modeling of Fe(II), Cu(II), Ni(II) and Zn(II) removal in a horizontal rotating tubular bioreactor

Rezić

Zeiner

Šantek

et al. 2011

Bioprocess Biosyst Eng

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“…As a model of anaerobic bioprocess, fermentative glucose conversion was chosen [23]. Acetate removal with mixed microbial culture was selected as a model bioprocess for study of HRTB performance in aerobic condition [24]. As combination of aerobic and anaerobic bioprocesses, nitrification and denitrification were done in two consecutive steps in the same bioreactor vessel [25].…”

Section: Introductionmentioning

confidence: 99%

“…In this work the effect of process parameters (n and F) on the mixed microbial culture biofilm formation in HRTB was studied as a continuation of comprehensive research of mixing [18][19][20] and conduction of model bioprocesses in HRTB [23][24][25][26][27]. This investigation started with mixed microbial culture isolation from surface sediments highly contaminated with heavy metals [39][40][41].…”

Section: Biofilm Formation Studies In Hrtbmentioning

confidence: 99%

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Application of Mixed Microbial Culture Biofilms for Manganese (II), Cobalt (II), and Chromium (VI) Biosorption by Horizontal Rotating Tubular Bioreactor

Rezić¹,

Rezić²,

Zeiner³

et al. 2017

Biological Wastewater Treatment and Resource Recovery

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Industrial wastewater contaminated with toxic heavy metals is a big ecological and environmental problem. Applying biological materials to effectively remove and recover heavy metals from contaminated wastewaters has gained importance as promising alternative to conventional treatment techniques. Thus, the objective of the presented paper is the investigation of the capability of microorganisms, isolated from polluted (metal-laden) soil, to biosorb toxic metals from aqueous solutions. Biosorption process for heavy metal removal was conducted in a new pilot scale horizontal rotating tubular bioreactor (HRTB). This bioreactor provides conditions for microorganism'sg r o w t hi naf o r mo fs u s p e n d e d cells and biofilm. Biofilm is capable to protect microorganisms from interaction with toxic metals in the surrounding environment. Three metals were selected as model examples: cations of manganese and cobalt and hexavalent chromium (an oxyanion). Optimized bioreactor conditions, namely, medium inflow rate (F) and bioreactor rotation speed (n) for biofilm formation and metal removal were monitored, and under optimized bioreactor conditions, promising results were obtained.

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“…Due to the great potential of the HRTB, different bioprocesses were studied in this bioreactor such are anaerobic (Ivančić et al, 2004), aerobic (Slavica et al, 2004) as well as a combination of aerobic and anaerobic bioprocesses (Rezić et al, 2007). Furthermore, heavy metals removal (Fe 2+ , Cu 2+ , Ni 2+ and Zn…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Mn (II), Co (II) and Cr (VI) in a horizontal rotating tubular bioreactor: experiments and evaluation of the integral bioprocess model

Rezić

Zeiner

et al. 2014

Braz. J. Chem. Eng.

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-In this research, a multi heavy metals removal process with mixed microbial culture was examined in a horizontal rotating tubular bioreactor (HRTB) with different combinations of process parameters. Three metals were selected as examples of cations (manganese and cobalt) and oxy-anion (hexavalent chromium). Hydrodynamic conditions and biomass sorption capacity in the HRTB had the main impact on the heavy metals removal efficiencies, which were for Mn 2+ 87.0-93.6%, Co 2+ 89.0-95.7% and Cr 6+ 99.7-100%, respectively. For the bioprocess description in the HRTB, the integral bioprocess model that combines hydrodynamics, mass transfer and kinetics was used. This model was evaluated for the new experimental conditions and average variances between experimental and simulated data were in the range of 0.12 -3.21·10 -3 . The results obtained clearly show that the integral bioprocess model is able to describe the heavy metal removal process in the HRTB.

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Microbial acetate oxidation in horizontal rotating tubular bioreactor

Cited by 12 publications

References 21 publications

Mathematical modeling of Fe(II), Cu(II), Ni(II) and Zn(II) removal in a horizontal rotating tubular bioreactor

Mathematical modeling of Fe(II), Cu(II), Ni(II) and Zn(II) removal in a horizontal rotating tubular bioreactor

Application of Mixed Microbial Culture Biofilms for Manganese (II), Cobalt (II), and Chromium (VI) Biosorption by Horizontal Rotating Tubular Bioreactor

Biosorption of Mn (II), Co (II) and Cr (VI) in a horizontal rotating tubular bioreactor: experiments and evaluation of the integral bioprocess model

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