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210 results on '"Chen, Jian Meng"'

32. Abiotic and biological mechanisms of nitric oxide removal from waste air in biotrickling filters

Author

Chen, Jian-Meng and Ma, Jian-Feng

Subjects
Nitrification -- Case studies, Nitric oxide -- Causes of -- Waste management -- Case studies, Environmental services industry, Environmental issues, Science and technology, Waste management, Case studies, Causes of
Abstract

ABSTRACT Nitric oxide (NO) may participate in the ozone layer depletion and forming of nitric acid. Abiotic and biological mechanisms of NO removal from waste gases were studied in a [...]

Published
2006

35. Comparison of separated and combined photodegradation and biofiltration technology for the treatment of volatile organic compounds: A critical review.

Author

Han, Meng-Fei, Hu, Xu-Rui, Wang, Yong-Chao, Tong, Zhen, Wang, Can, Cheng, Zhuo-Wei, Feng, Ke, Qu, Miao-Miao, Chen, Jian-Meng, Deng, Ji-Guang, and Hsi, Hsing-Cheng

Subjects
BIOFILTRATION, VOLATILE organic compounds, PHOTODEGRADATION, MANUFACTURING processes, POISONS
Abstract

The continuous emissions of volatile organic compounds (VOCs) from the industrial process cause serious environmental problems and pose a threat to human health. Photodegradation technology and biofiltration technology are efficient to control VOCs emissions. Recently, the researches on combined photodegradation and biofiltration technology have been attractive, since it could overcome the challenges in the application of the separated technologies, such as toxic by-product emission, excess biomass accumulation, and shock loading. However, no review has published to report the development of the combined technology comprehensively. In this paper, the challenges of the separated photodegradation and biofiltration technology in treating VOCs are documented firstly. Then, the advantages of the combined technology are illustrated by comparing with the separated photodegradation and biofiltration technology, respectively. Finally, the interaction mechanisms between photodegradation and biofiltration are also discussed. The advantages of the combined technology could promote its application in practical engineering. [ABSTRACT FROM AUTHOR]

Published
2022
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36. Brain White Matter Development Over the First 13 Years in Very Preterm and Typically Developing Children Based on the 1-w/2-w Ratio.

Author

Thompson, Deanne K., Yang, Joseph Y. M., Chen, Jian MEng, Kelly, Claire E. c(hons), Adamson, Christopher L., Alexander, Bonnie, Gilchrist, Courtney c(hons), Matthews, Lillian G., Lee, Katherine J., Hunt, Rodney W., Cheong, Jeanie L. Y., Spencer-Smith, Megan, Neil, Jeffrey J., Seal, Marc L., Inder, Terrie E., Doyle, Lex W., Anderson, Peter J., Chen, Jian, Kelly, Claire E, and Gilchrist, Courtney

Published
2022
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45. [Microbial diversity analysis in rotating drum biofilter for nitric oxide denitrifying removal]

Author

Chen Jun, Wang Zhi-ye, Jiang Yi-feng, Haifeng Qian, Sha Hao-lei, and Chen Jian-meng

Subjects
Bacteria, Anaerobic, Bioreactors, Biofilms, RNA, Ribosomal, 16S, Cluster Analysis, Genetic Variation, Biodiversity, Nitric Oxide, Polymerase Chain Reaction, Filtration, Electrophoresis, Gel, Pulsed-Field
Abstract

PCR-DGGE was applied to analyze the microbial communities in rotating drum biofilter (RDB) for nitric oxide denitrifying removal under anaerobic conditions. The 16S rRNA genes (V3 region) were amplified with two universal primers (338F-GC and 518R). These amplified DNA fragments were separated by parallel DGGE. The DGGE profiles of biofilm samples from different sections of RDB are similar and about sixteen types of microorganisms are identified in the biofilm samples. These results show that microbial diversity of RDB firstly increases but then decreases with the addition of Cu II (EDTA) and the increase of NO removal efficiency. However, the change of microbial community is not significant during the process. Eight major bands of 16S rRNA genes fragments from DGGE profiles of biofilm samples were further eluted from gel, re-amplified, cloned and sequenced. The sequences of these fragments were compared with the database in GeneBank (NCBI). The gene analysis of 16S rRNA showed that the major populations are Cytopahga-Flexibacteria-Bacteroides (CFB) group Bacteroides, beta -Proteobacterium, gamma-Proteobacterium and Clostridium sp.. In addition, denitrification is related with band G-5, G-6 and G-8. G-5 is affiliated with gamma-Proteobacterium. Both G-6 and G-8 are affiliated with beta-Proteobacterium.

Published
2008

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