KANJO Yoshinori


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Laboratory location

Sugimoto Campus

Degree 【 display / non-display

  • Osaka City University -  Doctor of Engineering

  • Kyoto University -  Master of Engineering

Research Areas 【 display / non-display

Environmental Engineering, Wastewater Treatment, Waste Treatment and Disposal

Research Career 【 display / non-display

  • Evaluation and treatment of endcrine disrupters in water environment

    (Collaboration in Japan) Project Year :


    Keyword in research subject:  endcrine disrupters

  • Recycling of waste materials as raw materials of cement

    (Individual) Project Year :


    Keyword in research subject:  waste materials, raw materials of cement, recycling

  • Advanced Treatment of Sewage

    (Collaboration in Japan) Project Year :


    Keyword in research subject:  Nutrient Removal

Current Career 【 display / non-display

  • Osaka City University   Graduate School of Engineering   Urban Engineering Course   Professor  

  • Osaka City University   Graduate School of Engineering  

Graduate School 【 display / non-display


    Kyoto University  Graduate School, Division of Engineering 

Graduating School 【 display / non-display


    Kyoto University   Faculty of Engineering  


Published Papers 【 display / non-display

  • Simultaneous recovery of phosphorus and potassium as magnesium potassium phosphate from synthetic sewage sludge effluent

    Nakao Satoshi, Nishio Takayuki, Kanjo Yoshinori

    ENVIRONMENTAL TECHNOLOGY  38 ( 19 ) 2416 - 2426 2017  [Refereed]



    WAKAYAMA Hizuru, KANJO Yoshinori, OHTA Masafumi, SHIRAI Mayu, MIZUTANI Satoshi

    Japan Society of Civil Engineers, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)  72 ( 7 ) III_243 - III_248 2016  [Refereed]

     View Summary

     In order to recover the phosphorus from sewage sludge and to prevent from the trouble at incineration plants caused by phosphorus in sludge, fractionation analysis of phosphorus in sewage sludge of eleven municipal sewage treatment plants and acid treatments were performed. The results of fractionation analysis showed that phosphate fractions and particulate phosphate fraction in digested sludge ranged 73 to 89% and 24 to 62%, respectively. The results of acid treatments showed that particulate phosphate fraction could be dissolved to phosphate ion thoroughly at the pH condition of 2 with sulfuric acid, 5 with citric acid, or 4 with acetic acid. Judging from these results, dissolved fraction of phosphorus in digested sludge will be able to increase more than doubled using with acid treatment.

    DOI CiNii

  • Distribution of Acid-Extractable Pb Contents in Molten Slag From Municipal Solid Waste Incineration Ash

    Satoshi Mizutani, Yoshinori Kanjo

    Jacobs Journal of Civil Engineering  1 ( 1 ) 1 - 4 2015.05  [Refereed]

  • Using Contact Oxidation for the Treatment of Wastewater Containing Aromatic Compounds

    KUMAMI Akihito, OSUMI Shojiro, KANJO Yoshinori

    Society of Environmental Conservation Engineering, Journal of Environmental Conservation Engineering  44 ( 12 ) 667 - 675 2015  [Refereed]

     View Summary

    In order to treat wastewater containing high concentration of aromatic compounds, we evaluated the performance of the contact oxidation method by conducting a removal test with initial substrate concentration of 1,500㎎/L phenol or 1,000㎎/L cresol. The test showed that compound removal rates were three times higher than when using the conventional activated sludge method. Also, these test results suggest that contact oxidation provides higher resistance to 1,500㎎/L of the reaction inhibitor cresol. We conducted a continuous contact oxidation experiment at high load conditions for 50 days, which resulted in COD<sub>Cr</sub> removal of 6.5㎏/m<sup>3</sup>/d. Genetic analysis of microorganisms in the sludge revealed a dramatic change in bacterial flora and preferential growth, particularly of<i> Alcaligenes</i>. The test using labeled substance <sup>13</sup>C-phenol revealed the large contribution of <i>Alcaligenes</i> to be able to remove phenol.

    DOI CiNii

  • Reducing Excess Sludge from Bread Plant Wastewater Treatment:Combined Process of Contact Oxidation and Aerobic Digestion

    OSUMI Shojiro, NAKAYAMA Katsutoshi, KUMAMI Akihito, KANJO Yoshinori

    Society of Environmental Conservation Engineering, Journal of Environmental Conservation Engineering  43 ( 3 ) 162 - 171 2014  [Refereed]

     View Summary

    Seeking to reduce the amount of excess sludge at a bread plant, we designed the following process: first, wastewater, including oil, is treated by contact oxidation; then it is separated into supernatant and floating scum by pressurized floatation. After aerobic digestion of the scum, the supernatant and the treated scum are mixed and discharged as sewage. If the mixed fluid suits for the standard for discharge into sewage, excess sludge disposal is not necessary. We tested whether the above system was workable or not. We conducted experiments on continuous contact oxidation for 230 days and continuous aerobic digestion of scum for 60 days, which resulted in a BOD removal ratio of 97% and a BOD to SS conversion ratio of 0.13 g-SS/g-removed BOD by contact oxidation, and a SS degradation ratio of 58.9% by aerobic digestion of the scum. We also showed that it is possible to express the results of the batch-wise aerobic digestion experiment with a model based on the first-order reaction supposing the existence of easily degradable, persistent, and undegradable compounds in the sludge. Finally, we calculated the material balance of the entire system and showed that the wastewater from the bread plant where we tested, including 1,200 ㎎/L of BOD and 450 ㎎/L of SS, could be treated by the process we designed with no excess sludge disposal required. This treated water includes 80 ㎎/L of BOD and 99 ㎎/L of SS and could be discharged into sewers.

    DOI CiNii

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Books etc 【 display / non-display

  • Environmental Remediation Technologies for Metal-Contaminated Soils

    S. Mizutani, M. Ikegami, H. Sakanakura, and Y. Kanjo (Part: Joint Work )

    Springer  2016.10

  • Water Pollution Ⅶ

    Yoshinori KANJO, Noboru YURUGI, Masaru YAMADA (Part: Contributor )

    WIT Press  2003.06

Review Papers (Misc) 【 display / non-display


    MOURI Mitsuo, KANJO Yoshinori

    Japan Society of Civil Engineers, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)  68 ( 4 ) 224 - 233 2012  [Refereed]  [Invited]

     View Summary

    &nbsp;Soils at Manufactured Gas Plant (MGP) sites are often contaminated by cyanide (CN). Besides free-CN, contaminated soils at MGP sites contain less or little toxic Metal-CN complexes (mostly iron-CN complexes) as a large part of total CN. The total CN is an important index used for the evaluation of soil remediation process such as soil washing.<br>&nbsp;The total CN content is measured by the sediment test method. After having experiences of soil washing for several MGP sites, it has been noticed that the mass balance was not maintained when the total CN content was measured by the sediment test method.<br>&nbsp;In order to eliminate the observed inadequacy of the sediment test method, an experimental study was conducted to modify the method. Each Soil sample from three MGP sites was divided into six parts to make a series of cascade bulk samples. Each cascade bulk sample was mixed with clean sand in such a way that the prepared sample had increased its dry weight by 1, 2, 5, 10, 20, and 50 times the divided soil sample. Then the relationship between the rate of bulking and the test value of total CN content was investigated. The same test is repeated for a standard sample comprising ferric ferrocyanide (Fe4[Fe(CN)6]3) and clean sand. As a result of study, it has been observed that; 1) a bulking factor of 10 is enough to get near true value of total CN content for highly contaminated soils, 2) the test with standard samples of varying total CN content showed a maximum CN recovery rate of 80%, and, 3) no bulking of sample is necessary for soils with less than 50mg/kg of CN.<br>&nbsp;It is concluded that the modified sediment test method is effective and necessary for the quantitative evaluation of cleanup of soils contaminated with CN.

    DOI CiNii

  • Field Investigation of Turbid Groundwater in Monitoring Well

    MOURI Mitsuo, KASE Takao, KANJO Yoshinori

    Japan Society on Water Environment, Journal of Japan Society on Water Environment  28 ( 4 ) 281 - 286 2005.04  [Refereed]  [Invited]

     View Summary

    The grain-size distribution of turbidity, water chemistry, and the size of fine particles associated with contaminants in turbid groundwater were investigated in existing monitoring wells. Groundwater monitoring wells are used in obtaining general information on groundwater quality and specific information on concentrations and specification of mobile contaminants in the vicinity of a monitoring well. This information is used in determining whether a given facility is currently in compliance with regulations. Turbidity (fine particles) are present in monitoring wells as a result of well installation in a stratum containing many fine particles (e.g., clay and silt) at a depth of less than GL-10m, well development, prior purging, sampling events, and natural colloidal transport and deposition over time. It is crucial that samples obtained from monitoring wells accurately reflect in situ mobile contaminant concentrations. The filtration of groundwater samples may remove both mobile fine particles/colloids and artifact particles. The most common groundwater purging method is to purge a monitoring well using bailers or pumps to remove 3 to 5 casing volumes to obtain formation water. In this paper, the concept and numerical formulas of a well-purging model are introduced and discussed. The calculation result shows that prepurging more than 3 casing volumes ensures a sampling of well water which is similar to formation water. The differences between filter pack and gravel pack (filter media #2 - #4) and the method of selecting the sizes of filter media were surveyed and discussed with the aim of installing a monitoring well in a stratum containing many fine particles.

    DOI CiNii

  • Purification of Polluted Sea Water by Mound Breakwater and Estimation for Coastal Area Purification

    Proceedings of Coastal Engineering  40,966-970 1993

  • Purification of Polluted Sea Water by Biofilm Contactor and its Application to Coastal Areas

    Proceedings of Coastal Engineering  39,991-995 1992

  • Recovery of Copper, Chromium, and Arsenic Compounds fromthe waste Preservative-treated Wood

    Proc. of Annual Meeting of Inter. Reserch Group on Wood Preservation  22 1991

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Conference Activities & Talks 【 display / non-display

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Other Research Activities (Works) 【 display / non-display

  • Survey on the Actual State of Disposal Charges etc. of Construction Wastes


Other educational activity and Special note 【 display / non-display

  • Contribution to internationalization


  • Extra-Curricular Activities


  • Office hours


  • Contribution to FD activities


  • Extra-Curricular Activities


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Foreigner acceptance 【 display / non-display

  • Academic year : 2018

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    Number of International Students