Effect of presence of hydrophilic volatile organic compounds on removal of hydrophobic n-hexane in biotrickling filters
| Autor: | Chunping Yang, Yuanyuan Zhong, Shaohua Wu, Lijun Nie, Cheng Du, Xiang Li, Cheng Yeting, Haiyang Liu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Contact time Health Toxicology and Mutagenesis 0208 environmental biotechnology Promotion effect 02 engineering and technology 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Bioreactors Loading ratio Hexanes Environmental Chemistry 0105 earth and related environmental sciences Air Pollutants Volatile Organic Compounds Methyl n-Butyl Ketone Public Health Environmental and Occupational Health General Medicine General Chemistry Biodegradation Pollution Toluene 020801 environmental engineering Hexane Biodegradation Environmental chemistry Chemical engineering Biofilms Loading rate Degradation (geology) Hydrophobic and Hydrophilic Interactions Filtration |
| Zdroj: | Chemosphere. 252:126490 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2020.126490 |
| Popis: | Hydrophilic VOCs (volatile organic compounds) were applied to explore their positive influence on the elimination of the single hydrophobic VOC in biotrickling filters (BTFs). Comparison experiments were carried to evaluate the effect of 4-methyl-2-pentanone and toluene on the performance of BTFs for n-hexane removal. The results showed that the existence of 4-methyl-2-pentanone improved the removal performance of BTFs at short gas empty bed contact time (EBRT) of 15 s and low temperature of 10 °C. The degradation of n-hexane in the presence of 4-methyl-2-pentanone was slightly enhanced with a loading ratio of 6:1. When the mixing ratio was greater than 4, toluene significantly promoted the biodegradation of n-hexane with toluene loading rate less than 10 g m−3 h−1. Additionally, The promotion effect was not only reflected in the contents of proteins and polysaccharides, but also in the growth rates of microorganisms in biofilms. This work discussed the detailed effect between n-hexane and hydrophilic VOCs in BTFs, which would contribute to develop a more economical method to improve the removal performance of hydrophobic VOCs in BTFs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect