Interactions and microbial variations in a biotrickling filter treating low concentrations of hydrogen sulfide and ammonia

Ying, Shihao; Kong, Xianwang; Cai, Zhen; Man, Zun; Xin, Yicong; Liu, Dezhao

doi:10.1016/j.chemosphere.2020.126931

Cited by 26 publications

(4 citation statements)

References 38 publications

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“…High-throughput studies have focused on the structural and functional responses of microbial communities during the treatment of contaminants 17 , 22 , 23 . Previous analysis showed that there are great differences in microbial communities and structures between high N 2 O emission area and low N 2 O emission area 24 .…”

Section: Introductionmentioning

confidence: 99%

Metagenomic analysis of microbial community structure and function in a improved biofilter with odorous gases

Yang

Chen

et al. 2022

Sci Rep

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Biofilters have been broadly applied to degrade the odorous gases from industrial emissions. A industrial scale biofilter was set up to treat the odorous gases. To explore biofilter potentials, the microbial community structure and function must be well defined. Using of improved biofilter, the differences in microbial community structures and functions in biofilters before and after treatment were investigated by metagenomic analysis. Odorous gases have the potential to alter the microbial community structure in the sludge of biofilter. A total of 90,016 genes assigned into various functional metabolic pathways were identified. In the improved biofilter, the dominant phyla were Proteobacteria, Planctomycetes, and Chloroflexi, and the dominant genera were Thioalkalivibrio, Thauera, and Pseudomonas. Several xenobiotic biodegradation-related pathways showed significant changes during the treatment process. Compared with the original biofilter, Thermotogae and Crenarchaeota phyla were significantly enriched in the improved biofilter, suggesting their important role in nitrogen-fixing. Furthermore, several nitrogen metabolic pathway-related genes, such as nirA and nifA, and sulfur metabolic pathway-related genes, such as fccB and phsA, were considered to be efficient genes that were involved in removing odorous gases. Our findings can be used for improving the efficiency of biofilter and helping the industrial enterprises to reduce the emission of waste gases.

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Section: Introductionmentioning

confidence: 99%

Metagenomic analysis of microbial community structure and function in a improved biofilter with odorous gases

Yang

Chen

et al. 2022

Sci Rep

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“…Both ammonia and hydrogen sulfide can be easily solubilized at a suitable pH. Currently, the biotreatment in odor control includes biofilters, biotrickling filters and a bioscrubber [16][17][18]. In fact, biotreatment has achieved high efficiency for odor removal.…”

Section: Introductionmentioning

confidence: 99%

The Comparison of Biotreatment and Chemical Treatment for Odor Control during Kitchen Waste Aerobic Composting

Wei¹,

Wang

Zhang

et al. 2022

Separations

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Odor ΨΩγemission has become mathvariant="normal" mathvariant="sans-serif-bold-italic" an important issue in kitchen waste management. Ammonia and hydrogen sulfide are the two most important odor sources as they contribute malodor and can cause health problems. As biotreatment and chemical treatment are two majorly applied technologies for odor control, in this study, they were used to remove ammonia and hydrogen sulfide and the performance of each process was compared. It was found that chemical absorption could efficiently eliminate both ammonia and hydrogenmathvariant="script" sulfide, and the removal efficiencies of ammonia and hydrogen sulfide highly depended on the pH of the adsorbent, contacting time, and gas and solution ratio (G/S). The ammonia-removal efficiency reached 100% within less than 2 s at G/S 600 and pH 0.1. The complete removal of hydrogen sulfide was achieved within 2 s at G/S 4000 and pH 13. Biotrickling filter showed better ability for hydrogen sulfide removal and the removal efficiency was 91.9%; however, the ammonia removal was only 73.5%. It suggests that chemical adsorption is more efficient compared to biotreatment for removing ammonia and hydrogen sulfide. In the combination of the two processes, biotrickling filter followed by chemical adsorption, the final concentrations of ammonia and hydrogen sulfide could meet the Level 1 standard of Emission Standards for Odor Pollution (China). The study provides a potential approach for odor control during kitchen waste aerobic composting.

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“…High-throughput studies have focused on the structural and functional responses of microbial communities during the treatment of contaminants [17,22,23]. Analysis of samples from N 2 O emission area showed signi cantly different microbial communities and structures between high N 2 O emission area and low N 2 O emission area [24].…”

Section: Introductionmentioning

confidence: 99%

Metagenomic analysis of microbial community structure and function in a improved biofilter with odorous gases

Ni¹,

Yang²,

Liqing³

et al. 2021

Preprint

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BackgroundBiofilters have been broadly applied to degrade the odorous gases from industrial emissions. To explore biofilter potentials, the microbial community structure and function must be well defined. Using of improved biofilter, changes in microbial community structures and functions were investigated by metagenomic analysis. ResultsOdorous gases have the potential to alter the microbial community structure in the sludge of biofilter. A total of 90,016 unigenes assigned into various functional metabolic pathways were identified. In the improved biofilter, the dominant phyla were Proteobacteria, Planctomycetes, and Chloroflexi, and the dominant were Thioalkalivibrio, Thauera, and Pseudomonas. Several xenobiotic biodegradation-related pathways showed significant changes during the treatment process. Compared with the original biofilter, Thermotogae and Crenarchaeota phyla were significantly up-regulated in the improved biofilter, suggesting its important role in nitrogen-fixing. Furthermore, nitrogen metabolic pathway-related genes, such as nirA and nifA, and sulfur metabolic pathway-related genes, such as fccB and phsA, were considered to be efficient genes involved in removing odorous gases. ConclusionsOur findings can be used for improving the efficiency of biofilter and helping the industrial enterprises to reduce the emission of waste gas.

show abstract

Interactions and microbial variations in a biotrickling filter treating low concentrations of hydrogen sulfide and ammonia

Cited by 26 publications

References 38 publications

Metagenomic analysis of microbial community structure and function in a improved biofilter with odorous gases

Metagenomic analysis of microbial community structure and function in a improved biofilter with odorous gases

The Comparison of Biotreatment and Chemical Treatment for Odor Control during Kitchen Waste Aerobic Composting

Metagenomic analysis of microbial community structure and function in a improved biofilter with odorous gases

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