| Title: | A novel approach for toluene gas treatment using a downflow hanging sponge reactor |
| Author(s): | Yamaguchi T; Nakamura S; Hatamoto M; Tamura E; Tanikawa D; Kawakami S; Nakamura A; Kato K; Nagano A; Yamaguchi T; |
| Address: | "Department of Environmental Systems Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata, 940-2188, Japan. Department of Civil and Environmental Engineering, National Institute of Technology, Matsue College, 14-4 Nishiikuma, Matsue, Shimane, 690-8518, Japan. Sanki Engineering Company Limited, 1742-7 Shimotsuruma, Yamato, Kanagawa, 242-0001, Japan. Department of Civil and Environmental Engineering, National Institute of Technology, Kure College, 2-2-11 Agaminami, Kure, Hiroshima, 737-8506, Japan. Department of Construction Systems Engineering, National Institute of Technology, Anan College, 265 Aoki Minobayashi, Anan, Tokushima, 774-0017, Japan. Department of Environmental Systems Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata, 940-2188, Japan. ecoya@vos.nagaokaut.ac.jp" |
| Journal Title: | Appl Microbiol Biotechnol |
| DOI: | 10.1007/s00253-018-8933-5 |
| ISSN/ISBN: | 1432-0614 (Electronic) 0175-7598 (Linking) |
| Abstract: | "A novel gas-scrubbing bioreactor based on a downflow hanging sponge (DHS) reactor was developed as a new volatile organic compound (VOC) treatment system. In this study, the effects of varying the space velocity and gas/liquid ratio were investigated to assess the effectiveness of using toluene gas as a model VOC. Under optimal conditions, the toluene removal rate was greater than 80%, and the maximum elimination capacity was observed at approximately 13 g-C m(-3) h(-1). The DHS reactor demonstrated slight pressure loss (20 Pa) and a high concentration of suspended solids (up to 30,000 mg/L-sponge). Cloning analysis of the 16S rRNA and functional genes of toluene degradation pathways (tmoA, todC, tbmD, xylA, and bssA) revealed that the clones belonging to the toluene-degrading bacterium Pseudomonas putida constituted the predominant species detected at the bottom of the DHS reactor. The toluene-degrading bacteria Pseudoxanthomonas spadix and Pseudomonas sp. were also detected by tmoA- and todC-targeted cloning analyses, respectively. These results demonstrate the potential for the industrial application of this novel DHS reactor for toluene gas treatment" |
| Keywords: | "Bacteria/genetics/metabolism Biodegradation, Environmental *Bioreactors RNA, Ribosomal, 16S Toluene/*metabolism Volatile Organic Compounds/chemistry/*metabolism Waste Management/*instrumentation/*methods Downflow hanging sponge Elimination capacity Microb;" |
| Notes: | "MedlineYamaguchi, Tsuyoshi Nakamura, Syoichiro Hatamoto, Masashi Tamura, Eisuke Tanikawa, Daisuke Kawakami, Shuji Nakamura, Akinobu Kato, Kaoru Nagano, Akihiro Yamaguchi, Takashi eng 25 9874/Grant-in-Aid for JSPS Fellows/ Germany 2018/05/03 Appl Microbiol Biotechnol. 2018 Jul; 102(13):5625-5634. doi: 10.1007/s00253-018-8933-5. Epub 2018 May 1" |
