Bioremediation of Volatile Organic Compounds in Biofilters

Gopinath, M.; Pulla, Rose Havilah; Rajmohan, K. S.; Parthasarthy, Vijay; Muthukumaran, C.; Baskar, G.

doi:10.1007/978-981-10-7485-1_15

Cited by 6 publications

(5 citation statements)

References 33 publications

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“…Interestingly, indoor biowall-associated Hyphomicrobium sp. have been successfully used to bioremediate volatile organic compounds (VOCs), removing as much as 96% of isopropanol from indoor air (Brown et al 2018). While the present study did not specifically determine the presence or concentrations of VOCs in the HVAC systems, it can be hypothesised that the build-up of VOCs in the HVAC systems encouraged their growth.…”

Section: Discussionmentioning

confidence: 80%

Distribution and comparison of bacterial communities in HVAC systems of two university buildings: Implications for indoor air quality and public health

Sibanda

Selvarajan

Ogola

et al. 2021

Environ Monit Assess

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The installation of HVAC systems in building is meant to enhance indoor air quality as well as increase comfort to occupants. However, HVAC systems have also become a vehicle of contamination of indoor air with potentially pathogenic microorganisms. DNA was extracted from ten HVAC filter dust samples collected from two buildings and subjected to high throughput sequencing analysis to determine the bacterial community structure. Further, the Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt2) software was used to predict the potential functional capabilities of the bacterial communities. Sequencing analysis led to the identification of five major bacterial phyla, including Proteobacteria, Cyanobacteria, Actinobacteria, Firmicutes and Bacteroidetes. At genus level, Mycobacterium, Bacillus, Cupriavidus, Hyphomicrobium and Mesorhizobium were the most dominant. With the exception of the later two bacterial genera, the first three are potential pathogens whose presence in HVAC systems poses a significant public health risk, especially among immunocompromised individuals. Nine pathways associated with antibiotics resistance and bacterial pathogenicity were identified, including polymyxin resistance and peptidoglycan biosynthesis pathways. Further, investigation of the relationship between the detected bacterial meta-communities and predicted potential virulence factors (antibiotic resistance and pathogenic genes) led to the detection of 350 positive associations among 43 core bacteria, 2 pathogenic genes (sitA and uidA) and 14 resistance genes. Overall, the heterogeneous nature of microorganisms found in HVAC systems observed in this study shows that HVAC systems are the origin of airborne infections in indoor environments, and must be periodically cleaned and disinfected to avoid the build-up of pathogens, and the subsequent exposure of human occupants of these pathogens.

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Section: Discussionmentioning

confidence: 80%

Distribution and comparison of bacterial communities in HVAC systems of two university buildings: Implications for indoor air quality and public health

Sibanda

Selvarajan

Ogola

et al. 2021

Environ Monit Assess

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“…Recent review articles are available on biofilters for the removal of volatile organic compounds and heavy metals from polluted air and wastewater [ 15 , 16 , 20–22 , 49–52 ]. The majority of the works concentrate on treating the gaseous pollutants present in the air by employing biological technologies [ 15 , 16 , 20–22 , 48 , 51 ]. Removal of pollutants from the air to maintain a healthy indoor environment by utilizing botanical filters was given [ 15 , 21 , 48 ].…”

Section: Biofiltration Techniques Vs Conventional Techniques In the R...mentioning

confidence: 99%

“…Precise work was drawn on biotechnologies for the extraction of organic solvents from wastewater released from metal refineries [ 49 ]. Another work had generalized the biodegradation of volatile organic compounds by biofiltration technologies to address the peaking down of the air quality [ 51 ]. Recent work is available on biological-based technologies in the treatment of wastewater [ 50 ].…”

Section: Biofiltration Techniques Vs Conventional Techniques In the R...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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“…Moreover, gaseous pollutants such as acids SO 2 , and NO x can be controlled via water/chemical capture methods as these gases are highly soluble and can be easily captured via chemical reactions under moderate conditions (Ghosh-Dastidar et al, 1996;Gunter et al, 2000;Vosteen et al, 2005). In addition, biological techniques such as biofilters, composting, and anaerobic digestion are also capable of controlling various gaseous pollutants (VOCs) and/or organic compounds in aqueous phases (Verma et al, 2006;Hough et al, 2010;Gopinath et al, 2018;Wu et al, 2018). The heavy metals, generally exists as water-soluble salts in the residue, can be recycled via chemical precipitation (Forsgren, 2019).…”

Section: Techniques Applied For Controlling Pollutants During the Commentioning

confidence: 99%

Densification of Biomass and Waste Plastic Blends as a Solid Fuel: Hazards, Advantages, and Perspectives

Song

Hall

2020

Front. Energy Res.

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This mini-review considers the densification of biomass blended with plastic wastes as an approach for waste management and sustainable fuel production from two perspectives; (1) We overviewed the pollutants generated during plastics combustion and their hazards. The control of these pollutants can be achieved as both reported in literature and by currently in-service municipal waste plants. (2) Advantages from densifying biomass/plastic blends as a solid fuel are indicated. Biomass/plastic briquettes or pellets are a potentially promising solid fuel with low costs, high volumetric heating values, high resistance to mechanical damage, and good durability performance under humid conditions. Moreover, the combustion of biomass/plastic blends with <10% plastics has no substantial negative effect on pollutants emission compared with that of biomass. Perspectives on densifying biomass/plastic blends as a solid fuel are proposed to realize the scale-up of this technique.

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Bioremediation of Volatile Organic Compounds in Biofilters

Cited by 6 publications

References 33 publications

Distribution and comparison of bacterial communities in HVAC systems of two university buildings: Implications for indoor air quality and public health

Distribution and comparison of bacterial communities in HVAC systems of two university buildings: Implications for indoor air quality and public health

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

Densification of Biomass and Waste Plastic Blends as a Solid Fuel: Hazards, Advantages, and Perspectives

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