Comparison of Removal Behavior of Two Biotrickling Filters under Transient Condition and Effect of pH on the Bacterial Communities

Tu, Xiang; Li, Jianjun; Feng, Rongfang; Sun, Guozhe; Guo, Jun

doi:10.1371/journal.pone.0155593

Cited by 24 publications

(13 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…PCA analysis showed the presence of three different layers (or stratums) in which bacteria were stratified along the length of the BTF on day 538: a lower layer (H/H o : 0.05), a middle layer (H/H o : 0.2), and an upper layer (H/H o : 0.5–0.9). In line this work, microbial stratification has been reported in other studies of biotrickling filters that treat gaseous compounds 36,65,66 . The canonical correspondence analysis (Fig.…”

Section: Resultssupporting

confidence: 85%

Characterization of the microbial community in a biotrickling filter treating a complex mixture of gaseous compounds causing odor nuisance

Aguirre

Gentina

Malhautier

et al. 2021

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Industrial gaseous emissions causing odor nuisance has become a major environmental issue in many countries. Biotrickling filters are suitable for treating mixtures of gaseous compounds with high removal efficiencies. The aim of this work was to determine the vertical distribution of microbial communities established in a biotrickling filter treating a mixture of gaseous compounds causing odor nuisance, and to correlate its performance with the spatial and temporal distribution of inoculated bacteria. RESULTS In the long‐term operation, at day 538, the removal efficiencies were 100% for ammonia and H2S, 73% for methanol, 63% for trimethylamine, 41% for dimethylsulphide, and 32% for 2,5‐dimethylpirazyne; the elimination capacities were 1.5 [g NH3 m−3bed h−1], 0.7 [g H2S m−3bed h−1], 0.7 [g MeOH m−3bed h−1], 3.3 [g TMA m−3bed h−1], 0.21 [g DMS m−3bed h−1], and 0.6 [g 2,5‐DMP m−3bed h−1]. A stratification pattern of pollutants degradation along the biotrickling filter (BTF) was identified, where most of the removal of NH3, TMA, and H2S occurred at the lower level of the column, the removal of methanol and 2,5‐dimethylpyrazine occurred at low and medium levels, and the removal of dimethylsulphide occurred mainly at the upper levels. High‐throughput DNA sequencing analysis showed a colonization by bacteria genera different from the inoculated and a stratification of these bacteria along the BTF. CONCLUSION There is stratification in the biofilm of a biotrickling filter during its long‐term operation, and a relationship between the stratification of the microbial communities and the removal of the complex mixture of gases was identified. © 2021 Society of Chemical Industry

show abstract

Section: Resultssupporting

confidence: 85%

Characterization of the microbial community in a biotrickling filter treating a complex mixture of gaseous compounds causing odor nuisance

Aguirre

Gentina

Malhautier

et al. 2021

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…One of the most extensive studies, from a microbial ecology point of view, is perhaps the one described by Tu et al, (2015) [104]. In this study, two identical bench scale BTFs packed with volcanic rock, seeded with the same inoculum and acclimated for one month under steady state conditions at pH 4.0 (BTFa, a for acidic) or pH 7.0 (BTFn, n for neutral) were compared in terms of operational performance and microbial populations.…”

Section: Aerobic Biofiltrationmentioning

confidence: 99%

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Borgne

Baquerizo

2019

ChemEngineering

View full text Add to dashboard Cite

Bacterial communities’ composition, activity and robustness determines the effectiveness of biofiltration units for the desulfurization of biogas. It is therefore important to get a better understanding of the bacterial communities that coexist in biofiltration units under different operational conditions for the removal of H2S, the main reduced sulfur compound to eliminate in biogas. This review presents the main characteristics of sulfur-oxidizing chemotrophic bacteria that are the base of the biological transformation of H2S to innocuous products in biofilters. A survey of the existing biofiltration technologies in relation to H2S elimination is then presented followed by a review of the microbial ecology studies performed to date on biotrickling filter units for the treatment of H2S in biogas under aerobic and anoxic conditions.

show abstract

“…It has been reported that the bio-degrading activities mainly occurred in the bottom layer of packing bed [11, 18]. As a result, acidification in the bottom layer is more severe, and the growth rates of sulfur-oxidizing microorganisms inhabiting there can be largely reduced.…”

Section: Discussionmentioning

confidence: 99%

“…Here, another method of using combined packing materials was proposed. Previous study found that the bottom bed accounted for major removal of odorous pollutants [11]. However, removal of the upper packing materials from filter bed significantly lowered the overall removal performance of bioreactor.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of using combined packing materials on the removal of mixed sulfur compounds in a biotrickling filter and analysis of microbial communities

et al. 2019

BMC Biotechnol

Self Cite

View full text Add to dashboard Cite

Background Packing materials is a critical design consideration when employing biological reactor to treat malodorous gases. The acidification of packing bed usually results in a significant drop in the removal efficiency. In the present study, a biotrickling filter (BTF2) packed with plastic balls in the upper layer and with lava rocks in the bottom layer, was proposed to mitigate the acidification. Results Results showed that using combined packing materials efficiently enhanced the removal performance of BTF2 when compared with BTF1, which was packed with sole lava rocks. Removal efficiencies of more than 92.5% on four sulfur compounds were achieved in BTF2. Average pH value in its bottom packing bed was about 4.86, significantly higher than that in BTF1 (2.85). Sulfate and elemental sulfur were observed to accumulate more in BTF1 than in BTF2. Analysis of principal coordinate analysis proved that structure of microbial communities in BTF2 changed less after the shutdown but more when the initial pH value was set at 5.5. Network analysis of significant co-occurrence patterns based on the correlations between microbial taxa revealed that BTF2 harbored more diverse microorganisms involving in the bio-oxidation of sulfur compounds and had more complex interactions between microbial species. Conclusions Results confirmed that using combined packing materials effectively improved conditions for the growth of microorganisms. The robustness of reactor against acidification, adverse temperature and gas supply shutdown was greatly enhanced. These provided a theoretical basis for using mixed packing materials to improve removal performance.

show abstract

Comparison of Removal Behavior of Two Biotrickling Filters under Transient Condition and Effect of pH on the Bacterial Communities

Cited by 24 publications

References 42 publications

Characterization of the microbial community in a biotrickling filter treating a complex mixture of gaseous compounds causing odor nuisance

Characterization of the microbial community in a biotrickling filter treating a complex mixture of gaseous compounds causing odor nuisance

Microbial Ecology of Biofiltration Units Used for the Desulfurization of Biogas

Enhancement of using combined packing materials on the removal of mixed sulfur compounds in a biotrickling filter and analysis of microbial communities

Contact Info

Product

Resources

About