Simultaneous removal of ammonia and volatile organic compounds from composting of dead pigs and manure using pilot-scale biofilter

Shang, Bin; Zhou, Tanlong; Tao, Xinyong; Chen, Yongxing; Dong, Huijuan

doi:10.1080/10962247.2020.1841040

Cited by 12 publications

(7 citation statements)

References 65 publications

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“…NH 3 , N 2 O, and CH 4 concentrations in the air during the composting period were 5.6 ± 2.5, 1.0 ± 1.6, and 3.2 ± 1.6 mg m −3 , respectively. The NH 3 removal efficiencies have been described by Shang et al (2020) . The daily mean concentration of N 2 O from composting ranged between 1.5 and 11.5 mg m −3 , while the daily mean N 2 O concentrations from biofilters were about around 1.0 mg m −3 ( Figure 2 ).…”

Section: Resultsmentioning

confidence: 99%

“…This study was conducted in the Beijng Anding pig farm, located in Daxing District, Beijing, China (39°62′N, 116°50′E). The composting materials and composting process have been described by Shang et al (2020) .…”

Section: Methodsmentioning

confidence: 99%

“…NH 3 , CH 4 , and N 2 O concentrations of air outside (1 sampling point), a gas inlet of biofilters (3 sampling points), and a gas outlet of biofilters (9 sampling points) were measured continuously and simultaneously using a photoacoustic multigas analyzer (model Innova 1412i, LumaSense Technologies, Ballerup, Denmark) every day. The deodorization system was constructed, as previously described ( Shang et al, 2020 ), and the schematic is shown in Figure 1 . The experiment corresponding to the composting period was carried out for 42 days.…”

Section: Methodsmentioning

confidence: 99%

“…N 2 O from biofilters was correlated significantly with the NH 3 in the biofilters ( Clemens and Cuhls, 2003 ). EBRT can affect microorganism absorption and the conversion process of NH 3 in the biofilters ( Shang et al, 2020 ). Shorter EBRT means faster gas flow velocity, which can change the oxygen (O 2 ) gradients in the biofilter media and can lead to changes in denitrification ( Maia, et al, 2012b ).…”

Section: Introductionmentioning

confidence: 99%

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Greenhouse Gas Emissions From Biofilters for Composting Exhaust Ammonia Removal

Shang

Zhou

Tao

et al. 2022

Front. Bioeng. Biotechnol.

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Emissions of odorous compounds, such as ammonia (NH3), from composting have negative agronomic and environmental impacts. A biofilter is widely used for NH3 removal, with one of its potential detrimental by-products being nitrous oxide (N2O), which is a higher warming potential greenhouse gas (GHG). The aim of the study was to evaluate the effect of empty bed retention time (EBRT) on GHG emissions from biofilters for removing NH3 from composting. Composting experimental trials lasted 6 weeks, and composting materials were mixtures of dead pigs and manure. Three groups of biofilters with 1.2 m-height, 0.3 m-inner diameter, and 1.0 m media depth were conducted with EBRT of 30, 60, and 100s, respectively. Each treatment was performed in triplicate, and the gas was monitored using the dynamic emission vessel method. The Spearman’s correlation analysis showed a significantly positive correlation between inlet concentrations (ICs) of NH3 and increased N2O concentrations: ρ = 0.707, 0.762, and 0.607 with p ≤ 0.0001 for biofilters with EBRT of 30, 60, and 100s, respectively. The fraction of NH3-N denitrified into N2O-N in biofilters with EBRT of 60 and 100s was higher than that with EBRT of 30s. The total global warming potential (GWP) increased by 126%, 162%, and 144% for biofilters with EBRT of 30, 60, and 100s, respectively. These results indicated that biofilters with longer EBRT will lead to higher GWP production. Future research on odorous mitigation for composting with biofilters should focus more on greenhouse gas emissions.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Greenhouse Gas Emissions From Biofilters for Composting Exhaust Ammonia Removal

Shang

Zhou

Tao

et al. 2022

Front. Bioeng. Biotechnol.

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“…Water content in the biofilter determines the growth and metabolism of the microorganisms. In the biofiltration system, the packing materials remain in neutral pH of ~7 due to nitrification process [ 157 ]. Two biofilters with the same construction and design were taken for the study in the removal of VOCs from reformulated paint [ 158 ].…”

Section: Biofiltration Technique In the Removal Of Volatile Organic C...mentioning

confidence: 99%

A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

et al. 2022

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Good quality of water determines the healthy life of living beings on this earth. The cleanliness of water was interrupted by the pollutants emerging out of several human activities. Industrialization, urbanization, heavy population, and improper disposal of wastes are found to be the major reasons for the contamination of water. Globally, the inclusion of volatile organic compounds (VOCs) and heavy metals released by manufacturing industries, pharmaceuticals, and petrochemical processes have created environmental issues. The toxic nature of these pollutants has led researchers, scientists, and industries to exhibit concern toward the complete eradication of them. In this scenario, the development of wastewater treatment methodologies at low cost and in an eco-friendly way had gained importance at the international level. Recently, bio-based technologies were considered for environmental remedies. Biofiltration-based works have shown a significant result for the removal of volatile organic compounds and heavy metals in the treatment of wastewater. This was done with several biological sources such as bacteria, fungi, algae, plants, yeasts, etc. The biofiltration technique is cost-effective, simple, biocompatible, sustainable, and eco-friendly compared to conventional techniques. This review article provides deep insight into biofiltration technologies engaged in the removal of volatile organic compounds and heavy metals in the wastewater treatment process.

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