Your browser doesn't support javascript.
loading
Multiple organic substrates support Mn(II) removal with enrichment of Mn(II)-oxidizing bacteria.
Shoiful, Ahmad; Ohta, Taiki; Kambara, Hiromi; Matsushita, Shuji; Kindaichi, Tomonori; Ozaki, Noriatsu; Aoi, Yoshiteru; Imachi, Hiroyuki; Ohashi, Akiyoshi.
Affiliation
  • Shoiful A; Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima, 739-8527, Japan; Center of Technology for the Environment, Agency for the Assessment and Application of Technology (BPPT), Geostech Building, Kawasa
  • Ohta T; Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima, 739-8527, Japan.
  • Kambara H; Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima, 739-8527, Japan.
  • Matsushita S; Western Region Industrial Research Center, Hiroshima Prefectural Technology Research Institute, 2-10-1, Aga-minami, Kure, Hiroshima, 737-0004, Japan.
  • Kindaichi T; Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima, 739-8527, Japan.
  • Ozaki N; Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima, 739-8527, Japan.
  • Aoi Y; Program of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8530, Japan.
  • Imachi H; Department of Subsurface Geobiological Analysis and Research (D-SUGAR), Japan Agency for Marine-Earth Science & Technology (JAMSTEC), Yokosuka, Kanagawa, 237-0061, Japan.
  • Ohashi A; Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima, 739-8527, Japan. Electronic address: ecoakiyo@hiroshima-u.ac.jp.
J Environ Manage ; 259: 109771, 2020 Apr 01.
Article in En | MEDLINE | ID: mdl-32072950
Three different organic substrates, K-medium, sterilized activated sludge (SAS), and methanol, were examined for utility as substrates for enriching manganese-oxidizing bacteria (MnOB) in an open bioreactor. The differences in Mn(II) oxidation performance between the substrates were investigated using three down-flow hanging sponge (DHS) reactors continuously treating artificial Mn(II)-containing water over 131 days. The results revealed that all three substrates were useful for enriching MnOB. Surprisingly, we observed only slight differences in Mn(II) removal between the substrates. The highest Mn(II) removal rate for the SAS-supplied reactor was 0.41 kg Mn⋅m-3⋅d-1, which was greater than that of K-medium, although the SAS performance was unstable. In contrast, the methanol-supplied reactor had more stable performance and the highest Mn(II) removal rate. We conclude that multiple genera of Comamonas, Pseudomonas, Mycobacterium, Nocardia and Hyphomicrobium play a role in Mn(II) oxidation and that their relative predominance was dependent on the substrate. Moreover, the initial inclusion of abiotic-MnO2 in the reactors promoted early MnOB enrichment.
Subject(s)
Key words
Fulltext
Add to My VHL
Print
XML
PubMed Links
Search on Google

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Oxides / Manganese Compounds Language: En Journal: J Environ Manage Year: 2020 Document type: Article Country of publication:
Fulltext
Add to My VHL
Print
XML
PubMed Links
Search on Google

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Oxides / Manganese Compounds Language: En Journal: J Environ Manage Year: 2020 Document type: Article Country of publication: