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Removal of organic matter and nitrogen from distillery wastewater by a combination of methane fermentation and denitrification/nitrification processes

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Journal of Environmental Sciences 2006年第4期18卷 654-659页

作者： LI Jun ZHANG Zhen-jia LI Zhi-rong HUANG Guang-yu naoki Abe School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China School of Municipal and Environmental Engineering Shenyang Jianzhu University Shenyang 110168 China GuangdongJiujiang Distillery Co. Ltd. Nanhai 528205 China Matsudo Research Laboratory Hitachi Plant Technologies. Ltd. Tokyo Japan

The distillery wastewater of Guangdong Jiujiang Distillery, which is characteristic of containing high organic matters and rich total nitrogen, was treated by a combination of methane fermentation and denitrification/nitrification processes. 80% of COD in the raw wastewater was removed by methane fermentation at the COD volumetric loading rate of 20 kg COD/（m^3·d） using the expanded granule sludge bed （EGSB） process. However, almost all the organic nitrogen in the raw wastewater was converted into ammonia by ammonification there. Ammonia and volatile fatty acids （VFA） remaining in the anaerobically treated wastewater were simultaneously removed utilizing VFA as an electron donor by denitrification occurring in the other EGSB reactor and nitrification using PEG-immobilized nitrifying bacteria with recirculation process. An aerobic biological contact oxidization reactor was designed between denitrification/nitrification reactor for further COD removal. With the above treatment system, 18000-28000 mg/L of COD in raw wastewater was reduced to less than 100 mg/L. Also, ammonia in the effluent of the system was not detected and the system had a high removal rate for 900-1200 mg/L of TN in the raw wastewater, only leaving 400 mg/L of nitrate nitrogen.

关键词： ammonia COD VFA methane fermentation denitrification nitrification distillery wastewater immobilized nitrifyingbacteria

The Influence of Iron on Ammonium Ion Generation from Nitrate Ion in Liquid Phase

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Plasma Science and Technology 2005年第1期7卷 2673-2677页

作者： Youhei Kinoshita naoki Okumura Kazunori Takashima Shinji Katsura Akira Mizuno Department of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 JapanDepartment of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 JapanDepartment of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 JapanDepartment of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 JapanDepartment of Ecological Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 Japan

Flue gas cleaning in discharge plasma process has been studied intensivelyand we have tried to remove the NO_x and SO_2 using the wet-type plasma reactor. In this system, NOis oxidized to NO_2 and absorbed as NO_3^-, and SO_2 is absorbed as SO_3^(2-) and oxidized in theliquid to SO_4^(2-). But the concentration of NO_3^- was saturated and the absorption of NO_x andSO_2 was inhibited. Then, the reduction of NO_3^- in the liquid is required. We examined thereductive reaction of NO_3^- to NH_4^+ using discharge above the liquid surface then the pH value ofthe liquid was changed to alkaline slightly. When the Fe plate was used as a ground electrode inthe liquid, NH_4^+ was generated. Then, the relation between the generation of NH_4^+ and Fe ions(Fe^(2+) and Fe^(3+)) was studied. When Fe^(2+) was presented in the liquid, NH_4^+ was generatedand Fe^(2+) was oxidized to Fe^(3+). Fe^(2+) is required to generate NH_4^+ from NO_3^-. When NH_4^+was generated from NO_3^-, both the calculated pH value from NH_4^+ concentration and the measuredpH value indicated a similar value. From these results, the discharge above the liquid surface waseffective to convert NO_3^- to NH_4^+ and the reductive reaction leads to more absorption of NO_3^-.These results showed that the wet-type plasma reactor is effective for NO_x and SO_2 removalsystem.

关键词： discharge plasma reduction nitric acid ammonium

Microstructural origins of high strength of Al-Si alloy manufactured by laser powder bed fusion:In-situ synchrotron radiation X-ray diffraction approach

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Journal of Materials Science & Technology 2024年第11期178卷 80-89页

作者： naoki Takata Mulin Liu Masahiro Hirata Asuka Suzuki Makoto Kobashi Masaki Kato Hiroki Adachi Department of Materials Process Engineering Graduate School of EngineeringNagoya UniversityFuro-choChikusa-kuNagoya 464-8603 Japan Graduate School of Engineering University of HyogoHimeji 671-2280Japan Aichi Center for Industry and Science Technology 1267-1 AkiaiYakusa-choToyota 470-0356 Japan

The microstructural factors contributing to the high strength of additive-manufactured Al-Si alloys us-ing laser-beam powder bed fusion(PBF-LB)were identified by in-situ synchrotron X-ray diffraction in tensile deformation and transmission electron ***-LB and heat treatment were employed to manufacture Al-12%Si binary alloy specimens with different *** an early stage of de-formation prior to macroscopic yielding,stress was dominantly partitioned into the α-Al matrix,rather than the Si phase in all *** concentrated Si solute(~3%)in the α-Al matrix promoted the dynamic precipitation of nanoscale Si phase during loading,thereby increasing the yield *** macroscopic yielding,the partitioned stress in the Si phase monotonically increased in the strain-hardening regime with an increase in the dislocation density in the α-Al *** a later stage of strain hardening,the flow curves of the partitioned stress in the Si phase yielded stress relaxation owing to plastic ***,Si-phase particles localized along the cell walls in the cellular-solidified microstructure play a significant role in dislocation obstacles for strain *** with the results of the heat-treated specimens with different microstructural factors,the dominant strengthening factors of PBF-LB manufactured Al-Si alloys were discussed.

关键词： Laser powder bed fusion Aluminum alloys Microstructures X-ray diffraction(XRD) Strain hardening

Phase Behavior and Crystal Structure of Perovskite-Type Rare Earth Complex Oxides

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Journal of Rare Earths 2006年第6期24卷 668-672页

作者： Migaku Kobayashi Ryoko Katsuraya Tsubasa Nara Yusuke Tomita Hiromi Nakano naoki Kamegashira Department of Chemistry and Biochemistry Numazu College of Technology 3600 Ooka Numazu 410-8501 Japan Ryukoku University Seta Otsu 520-2194 Japan Department of Materials Science Toyohashi University of Technology Tempaku-cho Toyohashi 441-8580 Japan

Several compounds of rare earth complex oxides containing manganese and titanium were synthesized in Ar, and their crystal structures were analyzed by powder X-ray diffraction data and Rietveld method. Structures of A0.67Ln0.33 Mn0.33Ti0.6703（A = Ca or Sr and Ln = rare earth） were found to have orthorhombic symmetry with the space group Pnrna, and their interatomic distances and bond angles were obtained. This space group was also derived from electron microscopic study. Electrical conductivity of Cao.67Ln0.33Mn0.33Ti0.6703 for several rare earth elements showed a semiconducting property with the activation energy of 0.4 eV. Some of these compounds of the strontium system show the antiferromagnetic properties below 10 K.

关键词： perovskite crystal structure X-ray diffraction alkaline earth rare earth manganese titanium oxide

Room temperature operation of all-solid-state battery using a closo-type complex hydride solid electrolyte and a LiCoO_(2) cathode by interfacial modification

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Journal of Energy Chemistry 2020年第4期29卷 47-51页

作者： Sangryun Kim Kentaro Harada naoki Toyama Hiroyuki Oguchi Kazuaki Kisu Shin-ichi Orimo Institute for Materials Research Tohoku UniversitySendai 980-8577Japan WPI-Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan New Industry Creation Hatchery Center(NICHe) Tohoku UniversitySendai 980-8579Japan

We report on an all-solid-state battery that employs a closo-type complex hydride solid electrolyte and a LiCoO2 *** modification between the solid electrolyte and cathode with a LiNbO3 buffer layer enables reversible charge-discharge cycling with a cell voltage of 3.9V (***^+/Li) at room *** analyses clarify that the given modification effectively suppresses side reactions at the cathode/solid electrolyte *** interfacial resistance is lowered by ca.10 times with a 5 nm thick LiNbO3 buffer layer compared to that without a buffer layer,so that a discharge capacity of 109 mAh g^-1 is *** results suggest that interfacial modification can be a viable approach to the development of high-voltage all-solid-state batteries using closo-type complex hydride solid electrolytes and oxide cathodes.

关键词： All-solid-state batteries Closo-type complex hydride Solid electrolyte High-voltage cathodes Interfacial modification

Utility of single and double balloon endoscopy in patients with difficult colonoscopy: A randomized controlled trial

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World Journal of Gastroenterology 2013年第29期19卷 4732-4736页

作者： Atsuo Yamada Hirotsugu Watabe Noriyuki Takano Goichi Togo Yutaka yamaji Haruhiko Yoshida Takao Kawabe Masao Omata Kazuhiko Koike Department of Gastroenterology University of Tokyo Tokyo 113-8655 Japan

AIM: To compare the utility of single-balloon colonoscopy (SBC) or double-balloon colonoscopy (DBC) for difficult colonoscopies. METHODS: Between August 2008 and June 2010, patients in whom total colonoscopy failed within 30 min of insertion were assigned randomly to undergo either SBC or DBC. No sedatives were used. After the endoscopy, all patients were asked to evaluate pain during the procedure on a 10-point analog scale (1 = no pain; 10 = worst imaginable pain) with a questionnaire. The study outcomes were the cecal intubation rate and time, endoscopic findings, complications, and pain score. RESULTS: The SBC and DBC groups included 11 and 10 patients, respectively. All but one SBC patient achieved total colonoscopy successfully. The cecal intubation times were 18 min (range: 10-85 min) and 12.8 min (range: 9.5-42 min) in the SBC and DBC groups, respectively (P= 0.17). No difference was observed in the prevalence of colon polyps between the SBC and DBC groups (45% vs 30%, P = 0.66). SBC showed advanced colon cancer in the ascending colon, which was inaccessible using conventional colonoscopy. The respective pain scores were 5 (1-10) [median (range)] and 5 (1-6) in the SBC and DBC groups (P = 0.64). No complications were noted in any patient. CONCLUSION: The utility of singleand double-balloon endoscopy for colonoscopy seems comparable in patients with incomplete colonoscopy using a conventional colonoscope.

关键词： Difficult colonoscopy Double-balloon endoscopy Single-balloon endoscopy Double-balloon colonoscopy Single-balloon colonoscopy

Combustion Torque Estimation from Mass-produced Crank Angle Sensor 36

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Combustion Torque Estimation from Mass-produced Crank Angle ...

Effect of permeants on fracture permeability in granite under hydrothermal conditions

第36届中国控制会议

作者： naoki Yoneya Toshihiro Aono Masayuki Saruwatari Hitachi LTD.Research & Development Group

ISBN: (纸本)9781538629185

The output power variation in individual cylinders must be detected to suppress combustion *** thus developed a method to estimate the coefficient of variation of combustion（COV） and the crank angle position of peak combustion torque from mass-produced crank angle sensor signals,which have insufficient resolution of tooth pitch and tooth pitch variation caused by manufacturing *** this paper,we use the method to estimate COV and GTmax from mass-produced crank angle sensor information and evaluate its ***,to compensate for the shortage of the tooth pitch,a filter was developed to trigonometrically approximate crank rotation ***,another filter was developed to correct the tooth pitch variation resulting from manufacturing *** pitch error correction filter extracts the characteristic quantity of pitch error from the rotation speed measurement results at the fuel cut state and corrects the pitch error at a combustion *** an actual vehicle measurement,the proposed combustion torque estimation method achieved a COV detection error of 2.6%and 0Tmax detection accuracy of 3.0 deg at a 1200-rpm engine speed.

关键词： Engine Crank angle sensor Combustion torque estimation Fourier series signal processing

来源： cnki会议评论

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Rock Mechanics Bulletin 2022年第1期1卷 90-107页

作者： Achmad Hafidz naoki Kinoshita Hideaki Yasuhara Department of Civil and Environmental Engineering Ehime UniversityMatsuyama790-8577Japan

Flow-through experiments were conducted with three permeants to determine the effect of pH,temperature,and cation concentrations on changes in *** with a single fracture was used for each *** in the permeant concentrations due to pressure dissolution,free-face dissolution,and precipitation were identified by measuring the element concentrations before and after the *** addition,the mineral transformation was analyzed by *** results of the flow-through experiments showed a reduction in permeability in almost all the *** decrease in permeability may have been caused by the interaction between pressure dissolution and free-face dissolution,which occurred in the high pH water experiment,or between pressure dissolution and precipitation,which occurred in the saturated mineral water and simulated seawater *** pressure dissolution and free-face dissolution occurred in the samples,the pH and temperature were seen to greatly affect the decrease in permeability,namely,the permeability decreased significantly with increasing pH and *** remarkable decrease in permeability could have taken place because the dissolution rate constant of the mineral increased with the increasing pH and ***,when pressure dissolution and precipitation occurred in the samples,the cation concentrations and temperature were seen to greatly affect the changes in permeability,namely,the permeability decreased significantly with increasing cation concentrations and decreasing temperature.

关键词： Permeability Pressure dissolution Free-face dissolution Precipitation Permeant

Nucleotide-binding oligomerization domain 1 and Helicobacter pylori infection: A review

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World Journal of Gastroenterology 2018年第16期24卷 1725-1733页

作者： Kosuke Minaga Tomohiro Watanabe Ken Kamata naoki Asano Masatoshi Kudo Department of Gastroenterology and Hepatology Kindai University Faculty of Medicine Division of Gastroenterology Tohoku University Graduate School of Medicine

Nucleotide-binding oligomerization domain 1(NOD1) is an intracellular innate immune sensor for small molecules derived from bacterial cell components. NOD1 activation by its ligands leads to robust production of pro-inflammatory cytokines and chemokines by innate immune cells, thereby mediating mucosal host defense systems against microbes. Chronic gastric infection due to Helicobacter pylori(H. pylori) causes various upper gastrointestinal diseases, including atrophic gastritis, peptic ulcers, and gastric cancer. It is now generally accepted that detection of H. pylori by NOD1 expressed in gastric epithelial cells plays an indispensable role in mucosal host defense systems against this organism. Recent studies have revealed the molecular mechanism by which NOD1 activation caused by H. pylori infection is involved in the development of chronic gastritis and gastric cancer. In this review, we have discussed and summarized how sensing of H. pylori by NOD1 mediates the prevention of chronic gastritis and gastric cancer.

关键词： Nucleotide-binding oligomerization domain 1 Helicobacter pylori,gastritis gastric cancer