AKIYOSHI OHASHI

Last Updated :2025/07/05

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor (Special Appointment)
Web Site
https://epel.hiroshima-u.ac.jp/en/
E-mail
ecoakiyohiroshima-u.ac.jp

Basic Information

Academic Degrees

  • Doctor Engineering, Nagaoka University of Technology
  • Master of Engineering, Nagaoka University of Technology

Research Fields

  • Environmental science;Environmental conservation;Environmental engineering and reduction of environmental burden
  • Engineering;Civil engineering;Civil and environmental engineering

Educational Activity

Course in Charge

  1. 2025, Undergraduate Education, 2Term, Microbiology and Ecology for Engineering
  2. 2025, Undergraduate Education, 2Term, Ecology and civil engineering

Research Activities

Academic Papers

  1. Detection of domestic-use chemicals in urban storm drains during dry days in a separated sewer area, ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY, 9(5), 1342-1353, 20230505
    Link to Paper Search Results by DOI
  2. New microbial electrosynthesis system for methane production from carbon dioxide coupled with oxidation of sulfide to sulfate, JOURNAL OF ENVIRONMENTAL SCIENCES, 125, 786-797, 202303
    Link to Paper Search Results by DOI
  3. Contaminant Removal from Wastewater by Microalgal Photobioreactors and Modeling by Artificial Neural Network, WATER, 14(24), 202212
    Link to Paper Search Results by DOI
  4. Environmental Factors Affecting the Community of Methane-oxidizing Bacteria, MICROBES AND ENVIRONMENTS, 37(1), 2022
    Link to Paper Search Results by DOI
  5. Metabolic Potential of the Superphylum Patescibacteria Reconstructed from Activated Sludge Samples from a Municipal Wastewater Treatment Plant, MICROBES AND ENVIRONMENTS, 37(3), 2022
    Link to Paper Search Results by DOI
  6. Cultivation of previously uncultured microorganisms with a continuous-flow down-flow hanging sponge (DHS) bioreactor, using a syntrophic archaeon culture obtained from deep marine sediment as a case study, NATURE PROTOCOLS, 17(12), 2784-+, 202212
    Link to Paper Search Results by DOI
  7. Cultivation of previously uncultured sponge-associated bacteria using advanced cultivation techniques: A perspective on possible key mechanisms, FRONTIERS IN MARINE SCIENCE, 9, 20220830
    Link to Paper Search Results by DOI
  8. Biological methane production coupled with sulfur oxidation in a microbial electrosynthesis system without organic substrates, JOURNAL OF ENVIRONMENTAL SCIENCES, 116, 68-78, 202206
    Link to Paper Search Results by DOI
  9. Mutualistic relationship between Nitrospira and concomitant heterotrophs, Environmental Microbiology Reports, 14(1), 130-137, 202202
    Link to Paper Search Results by DOI
  10. Evaluating the resilience of a full-scale down-flow hanging sponge reactor to shock-loadings, WATER PRACTICE AND TECHNOLOGY, 17(1), 223-233, 202201
    Link to Paper Search Results by DOI
  11. Cometabolism of the Superphylum Patescibacteria with Anammox Bacteria in a Long-Term Freshwater Anammox Column Reactor, WATER, 13(2), 202101
    Link to Paper Search Results by DOI
  12. Treatment of landfill leachate with different techniques: an overview, WATER REUSE, 11(1), 66-96, 202103
    Link to Paper Search Results by DOI
  13. Performance optimization of a chitosan/anammox reactor in nitrogen removal from synthetic wastewater, JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 9(3), 202106
    Link to Paper Search Results by DOI
  14. Reactor performance and microbial community structure of single-stage partial nitritation anammox membrane bioreactors inoculated with Brocadia and Scalindua enrichment cultures, BIOCHEMICAL ENGINEERING JOURNAL, 170, 202106
    Link to Paper Search Results by DOI
  15. Triggering Growth via Growth Initiation Factors in Nature: A Putative Mechanism for in situ Cultivation of Previously Uncultivated Microorganisms, FRONTIERS IN MICROBIOLOGY, 12, 20210504
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  16. Bioelectrical Methane Production with an Ammonium Oxidative Reaction under the No Organic Substance Condition, MICROBES AND ENVIRONMENTS, 36(2), 202106
    Link to Paper Search Results by DOI
  17. Photodegradation of fragrance materials and triclosan in water: Direct photolysis and photosensitized degradation, ENVIRONMENTAL TECHNOLOGY & INNOVATION, 23, 202108
    Link to Paper Search Results by DOI
  18. Mn(II) oxidation and manganese-oxide reduction on the decolorization of an azo dye, INTERNATIONAL BIODETERIORATION & BIODEGRADATION, 146, 104820, 202001
    Link to Paper Search Results by DOI
  19. PAHs emission source analysis for air and water environments by isomer ratios - Comparison by modified Cohen's d, SCIENCE OF THE TOTAL ENVIRONMENT, 715, 20200501
    Link to Paper Search Results by DOI
  20. Multiple organic substrates support Mn(II) removal with enrichment of Mn(II)-oxidizing bacteria, JOURNAL OF ENVIRONMENTAL MANAGEMENT, 259, 20200401
    Link to Paper Search Results by DOI
  21. Pesticides in aquatic environments and their removal by adsorption methods, CHEMOSPHERE, 253, 202008
    Link to Paper Search Results by DOI
  22. Integrated anammox-biochar in synthetic wastewater treatment: Performance and optimization by artificial neural network., Journal of Cleaner Production, 243, 118638, 20200110
  23. Anti-bacterial Effects of MnO2 on the Enrichment of Manganese-oxidizing Bacteria in Downflow Hanging Sponge Reactors, MICROBES AND ENVIRONMENTS, 35(4), 2020
    Link to Paper Search Results by DOI
  24. relationship between citizen's pro-environmental behavior and their place attachment and socio-economic situation -analysis by comparison of 47 prefectures data -, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 76(6), II_375-II_383, 202010
    Link to Paper Search Results by DOI
  25. Biogas purification performance of new water scrubber packed with sponge carriers, JOURNAL OF CLEANER PRODUCTION, 214, 103-111, 20190320
    Link to Paper Search Results by DOI
  26. Stormwater inflow loading of polycyclic aromatic hydrocarbons into urban domestic wastewater treatment plant for separate sewer system, WATER SCIENCE AND TECHNOLOGY, 79(7), 1426-1436, 20190401
    Link to Paper Search Results by DOI
  27. Integrated biological-physical process for biogas purification effluent treatment, JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA, 83, 110-122, 201909
    Link to Paper Search Results by DOI
  28. Comprehensive review of polycyclic aromatic hydrocarbons in water sources, their effects and treatments, SCIENCE OF THE TOTAL ENVIRONMENT, 696, 20191215
    Link to Paper Search Results by DOI
  29. Degradation and volatilization process of fragrance materials and triclosan in wastewater treatment plant - Comparison between field survey and laboratory experiment -, ENVIRONMENTAL TECHNOLOGY & INNOVATION, 16, 100438, 201911
    Link to Paper Search Results by DOI
  30. Effects of Mn-oxides on biological decolorization of azo dye under aerobic and anaerobic conditions., 16th IWA World conference on Anaerobic Digestion (AD16), 201906
  31. Sponge packed in water scrubbing enhance biogas purification at atmospheric pressure., IWA Specialized International Conferences on Ecotechnologies for Wastewater Treatment (ecoSTP), 14-14, 201806
  32. Pollutants removal from synthetic wastewater by the combined electrochemical, adsorption and sequencing batch reactor (SBR), ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 161, 137-144, 20181015
    Link to Paper Search Results by DOI
  33. Specificities and Efficiencies of Primers Targeting Candidatus Phylum Saccharibacteria in Activated Sludge, MATERIALS, 11(7), 201807
    Link to Paper Search Results by DOI
  34. Pollutant Removal from Synthetic Aqueous Solutions with a Combined Electrochemical Oxidation and Adsorption Method, INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 15(7), 201807
    Link to Paper Search Results by DOI
  35. Effects of Salts on the Activity and Growth of "Candidatus Scalindua sp.", a Marine Anammox Bacterium, MICROBES AND ENVIRONMENTS, 33(3), 336-339, 20180929
    Link to Paper Search Results by DOI
  36. Effects of sponge pore-size on the performance of a down-flow hanging sponge reactor in post-treatment of effluent from an anaerobic reactor treating domestic wastewater, SUSTAINABLE ENVIRONMENT RESEARCH, 28(6), 282-288, 201811
    Link to Paper Search Results by DOI
  37. Draft Genome Sequence of Mn(II)-Oxidizing Pseudomonas resinovorans Strain MO-1, MICROBIOLOGY RESOURCE ANNOUNCEMENTS, 6(11), 201803
    Link to Paper Search Results by DOI
  38. Loading and removal of PAHs, fragrance compounds, triclosan and toxicity by composting process from sewage sludge, SCIENCE OF THE TOTAL ENVIRONMENT, 605, 860-866, 20171215
    Link to Paper Search Results by DOI
  39. Dominant Candidatus Accumulibacter phosphatis Enriched in Response to Phosphate Concentrations in EBPR Process, MICROBES AND ENVIRONMENTS, 32(3), 260-267, 20170927
    Link to Paper Search Results by DOI
  40. Biotic manganese oxidation coupled with methane oxidation using a continuous-flow bioreactor system under marine conditions, WATER SCIENCE AND TECHNOLOGY, 76(7), 1781-1795, 201710
    Link to Paper Search Results by DOI
  41. Methanotrophic community composition based on pmoA genes in dissolved methane recovery and biological oxidation closed downflow hanging sponge reactors, BIOCHEMICAL ENGINEERING JOURNAL, 124, 138-144, 20170815
    Link to Paper Search Results by DOI
  42. Simultaneous recovery of Ni and Co from rechargeable battery waste with dissolution treatment solution using MnOB., International Conference on Civil and Environmental Engineering ICCEE 2017, 155-156, 201711
  43. Intensification of biogas purification at normal pressure by physical and biological processes in a sponge scrubber system., International Conference on Civil and Environmental Engineering ICCEE 2017, 165-166, 201711
  44. Validation of the specificity of primers targeting Canditatus Saccharibacteria (TM7) in activated sludge., International Conference on Civil and Environmental Engineering ICCEE 2017, 179-180, 201711
  45. Influences of mobility and migration of human on the awareness of the conservation of local environments and pro-environmental activity., International Conference on Civil and Environmental Engineering ICCEE 2017, 197-198, 201711
  46. PAHs origin in urban areas by the spectrophotometric characterization of the whole organic matters in possible source particulate matters., 14th IWA/ IAHR International Conference on Urban Drainage (UCUD 2017)ICUD-0314, 138-138, 201709
  47. Phosphorus Recovery from Sewage in a Pilot-Scale UASB-DHS System., Frontiers Tnternational Conference on Wastewater Treatment and Modelling FICWTM 2017, 22-29, 201705
  48. Long-term performance evaluation of down-flow hanging sponge reactor regarding nitrification in a full-scale experiment in India, BIORESOURCE TECHNOLOGY, 204, 177-184, 20160301
    Link to Paper Search Results by DOI
  49. Phylogenetic diversity and ecophysiology of Candidate phylum Saccharibacteria in activated sludge, FEMS MICROBIOLOGY ECOLOGY, 92(6), 20160601
    Link to Paper Search Results by DOI
  50. Biomass Yield Efficiency of the Marine Anammox Bacterium, Candidatus Scalindua sp.," is Affected by Salinity", MICROBES AND ENVIRONMENTS, 30(1), 86-91, 20150301
    Link to Paper Search Results by DOI
  51. Biological oxidation of Mn(II) coupled with nitrification for removal and recovery of minor metals by downflow hanging sponge reactor, WATER RESEARCH, 68, 545-553, 20150101
    Link to Paper Search Results by DOI
  52. Recovery and biological oxidation of dissolved methane in effluent from UASB treatment of municipal sewage using a two-stage closed downflow hanging sponge system, JOURNAL OF ENVIRONMENTAL MANAGEMENT, 151, 200-209, 20150315
    Link to Paper Search Results by DOI
  53. PAH contents in road dust on principal roads collected nationwide in Japan and their influential factors, WATER SCIENCE AND TECHNOLOGY, 72(7), 1062-1071, 20150901
    Link to Paper Search Results by DOI
  54. Nitrogen removal using an anammox membrane bioreactor at low temperature, WATER SCIENCE AND TECHNOLOGY, 72(12), 2148-2153, 201512
    Link to Paper Search Results by DOI

Invited Lecture, Oral Presentation, Poster Presentation

  1. Novel wastewater treatment technology for sustainable society., International Conference on Civil and Environmental Engineering ICCEE 2015,, 2015/11, With Invitation

Patented

  1. Patent, 6785465, 2020/10/29
  2. Patent, 6719092, 2020/06/18
  3. Patent, 6016062, 2016/10/07
  4. 5739191, 2015/05/01
  5. 5736592, 2015/05/01
  6. 5722661, 2015/04/03
  7. Patent, 5582388, 2014/07/25
  8. Patent, 5004105, 2012/06/01