Challenges and solutions for biofiltration of hydrophobic volatile organic compounds

Volatile organic compounds (VOCs) emitted to the environment highly probably result in ecological and health risks. Many biotechnologies for waste gases containing hydrophobic VOCs have been developed in recent years. However, these biological processes usually exhibit poor removal performances for...

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Bibliographic Details
Published in:Biotechnology advances 2016-11, Vol.34 (6), p.1091-1102
Main Authors: Cheng, Yan, He, Huijun, Yang, Chunping, Zeng, Guangming, Li, Xiang, Chen, Hong, Yu, Guanlong
Format: Article
Language:English
Subjects:
Air Pollutants - chemistry
Air Pollutants - isolation & purification
Bioreactors
Biotechnology
Biotechnology - methods
Ecological effects
Environmental Restoration and Remediation - methods
Filtration - methods
Hydrophobic and Hydrophilic Interactions
Organic compounds
Surfactants
Utilization
Volatile compounds
Volatile organic compounds
Volatile Organic Compounds - chemistry
Volatile Organic Compounds - isolation & purification
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Summary:Volatile organic compounds (VOCs) emitted to the environment highly probably result in ecological and health risks. Many biotechnologies for waste gases containing hydrophobic VOCs have been developed in recent years. However, these biological processes usually exhibit poor removal performances for hydrophobic VOCs due to the low bioavailability. This review presents an overview of enhanced removal of hydrophobic VOCs in biofilters. Mechanisms and problems relevant to the biological removal of hydrophobic VOCs are reviewed, and then solutions including the addition of surfactants, application of fungal biocatalysts, biofiltration with pretreatment, innovative bioreactors and utilization of hydrophilic compounds are discussed in detail. Future research needs are also proposed. This review provides new insights into hydrophobic VOC removal by biofiltration.
ISSN:0734-9750
1873-1899
DOI:10.1016/j.biotechadv.2016.06.007