Fermentative bioconversion in a horizontal rotating tubular bioreactor

Ivančić, Mirela; Šantek, Božidar; Novak, Srđan; Marić, Vladimir

doi:10.1016/s0032-9592(03)00206-1

Cited by 10 publications

(21 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the basis of the obtained results it is clear that the bioreactor rotation speed did not have a pronounced effect on the suspended biomass concentration. These observations are in agreement with our previous research (Ivančić et al, 2004;Rezić et al, 2011a). However, some discrepancies from the above mentioned effect were observed at F= 0.5 L h -1 and n = 30 min -1 as a consequence of analytical errors.…”

Section: +supporting

confidence: 93%

See 1 more Smart Citation

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.

Self Cite

View full text Add to dashboard Cite

-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.

show abstract

Section: +supporting

confidence: 93%

“…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.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Wide investigation of HRTB mixing properties was previously done [18][19][20][21][22], and aerobic and anaerobic bioprocesses were successfully conducted. 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].…”

Section: Introductionmentioning

confidence: 99%

“…leads to intensive biofilm detachment [23,25], no higher speed are tested in the current investigation. Experiments with varying bioreactor rotation speed are carried out prior to changes of medium inflow rate, since the latter have exhibited higher effects on the bioprocess dynamics and the biofilm stability [23,24,26,27].…”

mentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

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.

show abstract

Microbial acetate oxidation in horizontal rotating tubular bioreactor

et al. 2004

View full text Add to dashboard Cite

The aim of this work was to investigate the possibility of conducting a continuous aerobic bioprocess in a horizontal rotating tubular bioreactor (HRTB). Aerobic oxidation of acetate by the action of a mixed microbial culture was chosen as a model process. The microbial culture was not only grown in a suspension but also in the form of a biofilm on the interior surface of HRTB. Efficiency of the bioprocess was monitored by determination of the acetate concentration and chemical oxygen demand (COD). While acetate inlet concentration and feeding rate influenced efficiency of acetate oxidation, the bioreactor rotation speed did not influence the bioprocess dynamics significantly. Gradients of acetate concentration and pH along HRTB were more pronounced at lower feeding rates. Volumetric load of acetate was proved to be the most significant parameter. High volumetric loads (above 2 g acetate l-1 h-1) gave poor acetate oxidation efficiency (only 17 to 50%). When the volumetric load was in the range of 0.60-1.75 g acetate l-1 h-1, acetate oxidation efficiency was 50-75%. At lower volumetric loads (0.14-0.58 g acetate l-1 h-1), complete acetate consumption was achieved. On the basis of the obtained results, it can be concluded that HRTB is suitable for conducting aerobic continuous bioprocesses.

show abstract

Fermentative bioconversion in a horizontal rotating tubular bioreactor

Cited by 10 publications

References 20 publications

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

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

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

Microbial acetate oxidation in horizontal rotating tubular bioreactor

Contact Info

Product

Resources

About