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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

Generation of non-thermal plasma combined with catalysts and their application in environmental technology

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Generation of non-thermal plasma combined with catalysts and...

The Statistical Experimental Design for Chemical Reactors Modeling

2012年等离子体催化与能源材料应用国际研讨会

作者： akira mizuno Dept. Environment and Life Science Toyohashi University of Technology Tenpaku-choToyohashi Japan 441-8580

＜正＞Non-thermal plasma promotes radical reactions at low temperature condition. In order to use NTP, selectivity and energy efficiency should be improved. For this purpose, combination of NTP and catalysts has been proposed, and several industrial applications have been developed. In this talk, generation of several

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Applied Mathematics 2016年第14期7卷 1534-1546页

作者： Graciela Prieto Oscar Prieto Teresa Unzaga Carlos Gay Kazunori Takashima akira mizuno The Universidad Nacional de Tucumán San Miguel de Tucumán Argentina The Toyohashi University of Technology Toyohashi Japan

The Statistical Experimental Design techniques are the most powerful tools for the chemical reactors experimental modeling. Empirical models can be formulated for representing the chemical behavior of reactors with the minimal effort in the necessary number of experimental runs, hence, minimizing the consumption of chemicals and the consumption of time due to the reduction in the number of experimental runs and increasing the certainty of the results. Four types of nonthermal plasma reactors were assayed seeking for the highest efficiency in obtaining hydrogen and ethylene. Three different geometries for AC high voltage driven reactors, and only a single geometry for a DC high voltage pulse driven reactor were studied. According to the fundamental principles of chemical kinetics and considering an analogy among the reaction rate and the applied power to the plasma reactor, the four reactors are modeled following the classical chemical reactors design to understand if the behavior of the nonthermal plasma reactors can be regarded as the chemical reactors following the flow patterns of PFR (Plug Flow Reactor) or CSTR (Continuous Stirred Tank Reactor). Dehydrogenation is a common elimination reaction that takes place in nonthermal plasmas. Owing to this characteristic, a paraffinic heavy oil with an average molecular weight corresponding to C15 was used to study the production of light olefins and hydrogen.

关键词： Chemical Reactors Modeling Statistical Experimental Designs Nonthermal Plasma Chemical Reactors

低温等离子体在烟气净化中的工业应用(英文)

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低温等离子体在烟气净化中的工业应用(英文)

非热等离子体在工业气体净化领域的应用——非热等离子体与催化或吸附性液体的复合作用

第十一届全国电除尘学术会议

作者： akira mizuno 日本Toyohashi理工大学生态工程系

低温等离子体减少气体污染物的应用已被广泛研究,商业产品近来也被生产出来。室内空气净化器已被批量生产用来清除异味。低温等离子体对分解易挥发有机物,清除柴油废气及脱硫也很有效。等离子体和催化剂混合,有助于提高效率和可选择性... 详细信息

低温等离子体减少气体污染物的应用已被广泛研究,商业产品近来也被生产出来。室内空气净化器已被批量生产用来清除异味。低温等离子体对分解易挥发有机物,清除柴油废气及脱硫也很有效。等离子体和催化剂混合,有助于提高效率和可选择性。柴油废气的清除很重要,低温等离子体技术将在不久的将来被利用。

关键词：低温等离子体气体净化脉冲放电充填衬脱硝脱硫

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非热等离子体在工业气体净化领域的应用——非热等离子体与催化或...

沿面放电氧活性物质注入协同SCR脱除烟气中NO_x

第十届全国电除尘、第二届脱硫学术会议

作者： akira mizuno 水野彰日本东京大学生态工程系

近来对气态污染物非热等离子技术已进行了大量的研究,商用产品也不断推出,旨在消除异味的室内空气净化产品可谓品种繁多。同时非热等离子体也能有效地分解挥发性有机化合物(VOC),净化柴油燃烧所产生的尾气以及应用于烟气脱硫。然而,将... 详细信息

近来对气态污染物非热等离子技术已进行了大量的研究,商用产品也不断推出,旨在消除异味的室内空气净化产品可谓品种繁多。同时非热等离子体也能有效地分解挥发性有机化合物(VOC),净化柴油燃烧所产生的尾气以及应用于烟气脱硫。然而,将非热等离子体与催化剂联合应用会进一步改善其效率和可选择性,本文将介绍如何发生非热等离子体,以及其在室内空气净化和烟气净化领域的应用,包括其在液体化学反应中的应用等。

关键词：非热等离子体烟气净化脉冲放电填充床脱硝脱硫

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环境科学学报 2015年第7期35卷 2025-2029页

作者：李虎商克峰鲁娜安久涛李杰吴彦水野彰大连理工大学环境学院大连116024 大连理工大学静电与特种电源研究所大连116024 丰桥技术科学大学环境与生命科学系

为了提高选择性催化还原(SCR)在低温区(<200℃)的脱硝性能,提出利用插在烟道中的沿面放电反应器生成氧活性物质,部分氧化NO以实现低温快速SCR脱硝过程.同时,研究了氧活性物质注入实现快速SCR的脱硝性能,考察了氧活性物质注入降低二氧化... 详细信息

为了提高选择性催化还原(SCR)在低温区(<200℃)的脱硝性能,提出利用插在烟道中的沿面放电反应器生成氧活性物质,部分氧化NO以实现低温快速SCR脱硝过程.同时,研究了氧活性物质注入实现快速SCR的脱硝性能,考察了氧活性物质注入降低二氧化硫和水蒸汽对SCR反应的影响.实验结果表明:在模拟烟气温度为150℃时,采用氧活性物质注入,部分氧化烟气中的NO以实现快速SCR反应条件下(NO/NO2浓度比为1),脱硝效率为51.9%,比标准SCR提升23%;当模拟烟气中存在SO2或H2O时,氧活性物质注入可有效降低SO2、H2O对SCR脱硝效率的影响.

关键词：沿面放电氧活性物质注入选择性催化还原(SCR) 脱硝

Assessing temporal dynamics of predation and effectiveness of caterpillar visual defense using sawfly larval color and resting posture as a model

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Insect Science 2021年第6期28卷 1800-1815页

作者： Xia Pan Takafumi mizuno Kaiki Ito Tsuguhiro Ohsugi Saki Nishimichi Riku Nomiya Misuzu Ohno akira Yamawo Akihiro Nakamura CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglunYunnan666303China College of Agriculture and Forestry Pu'er University6Xueyuan RoadNanpingPu'erYunnan665000China Department of Biological Sciences Faculty of Agriculture and Life ScienceHirosaki University3 Bunkyo-choHirosakiAomori036-8561Japan Center of Plant Ecology Core Botanical GardensChinese Academy of SciencesMenglaMenglun666303China

Caterpillars(Lepidoptera and Symphyta larvae)employ diverse visual defensive tactics,and effectiveness of such tactics may be highly dynamic across time due to seasonal changes in the predator assemblages and their ***,this has rarely been studied especially in tropical *** we assessed temporal changes in the defensive value of caterpillar color and shape,using six types of plasticine dummy caterpillars:three colors(green,black,and white)x two shapes(curled and straight).These dummy caterpillars were deployed five times over different seasons in tropical forests of Xishuangbanna(China)and,as a comparison,twice in a temperate forest of Hirosaki(Japan).The colors and shapes of dummy caterpillars simulate visual traits of black sawfly larvae which take the curled resting posture in tropical rainforests of Xishuangbanna,apparently masquerading excrements commonly found on plants,while in Hirosaki there is no black-curled sawfly larvae and few excrements on *** found no significant effects of caterpillar colors or shapes on predation in *** contrast,black and curled caterpillars received significantly lower predation by birds in Xishuangbanna constantly across ***,we were unable to provide evidence that the black-curled sawfly larvae are masquerading as *** of the dummy caterpillars also affected the predation by ants and parasitoid wasps at certain *** is the first report on ecological function of the curled posture of sawfly larvae,and we demonstrated the importance to assess the temporal dynamics of predation and effectiveness of defensive tactics in tropical forests.

关键词： artificial sentinel caterpillar masquerading predation sawfly larva visual defense Yunnan

Diagnosis and management of fibromuscular dysplasia and segmental arterial mediolysis in gastroenterology field: A mini-review

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World Journal of Gastroenterology 2018年第32期24卷 3637-3649页

作者： Masayoshi Ko Kenya Kamimura Kohei Ogawa Kentaro Tominaga akira Sakamaki Hiroteru Kamimura Satoshi Abe Kenichi mizuno Shuji Terai Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University

The vascular diseases including aneurysm, occlusion, and thromboses in the mesenteric lesions could cause severe symptoms and appropriate diagnosis and treatment are essential for managing patients. With the development and improvement of imaging modalities, diagnostic frequency of these vascular diseases in abdominal lesions is increasing even with the small changes in the vasculatures. Among various vascular diseases, fibromuscular dysplasia(FMD) and segmental arterial mediolysis(SAM) are noninflammatory, nonatherosclerotic arterial diseases which need to be diagnosed urgently because these diseases could affect various organs and be lethal if the appropriate management is not provided. However, because FMD and SAM are rare, the cause, prevalence, clinical characteristics including the symptoms, findings in the imaging studies, pathological findings, management, and prognoses have not been systematically summarized. Therefore, there have been neither standard diagnostic criteria nor therapeutic methodologies established, to date. To systematically summarize the information and to compare these disease entities, we have summarized the characteristics of FMD and SAM in the gastroenterological regions by reviewing the cases reported thus far. The information summarized will be helpful for physicians treating these patients in an emergency care unit and for the differential diagnosis of other diseases showing severe abdominal pain.

关键词： Fibromuscular dysplasia Segmental arterial mediolysis Mesenteric lesion diagnosis Humans

介质阻挡放电协同铜氧化物催化剂脱除NO_x反应研究

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科技导报 2008年第23期26卷 52-55页

作者：陈明功颜凌燕汪晓艳刘涛陈明强高岛和则水野彰安徽理工大学化学工程学院安徽淮南232001 丰桥技术科学大学生态工程系日本爱知丰桥4418580

研究了以煤基活性炭为载体的铜氧化物催化剂在阻挡介质放电反应器中对NOx脱除效率的影响规律,以及催化剂在反应前后的变化和主要产物。研究结果表明,以煤基活性炭为载体的铜氧化物催化剂协同阻挡介质放电反应器,可使NO有效氧化为NO2,对... 详细信息

研究了以煤基活性炭为载体的铜氧化物催化剂在阻挡介质放电反应器中对NOx脱除效率的影响规律,以及催化剂在反应前后的变化和主要产物。研究结果表明,以煤基活性炭为载体的铜氧化物催化剂协同阻挡介质放电反应器,可使NO有效氧化为NO2,对NOx也有明显的脱除效果,使NO2进一步氧化为NO3-,阻止了等离子体状态下活性氧自由基自身结合生成氧气的循环反应;该催化剂对氮氧化物具有吸附和储存功能,提高了反应物浓度和反应速率。随着介质阻挡放电反应器输入能量的增加,氮氧化物脱除效率增大,该能量可有效产生等离子体,提高活性粒子和氧自由基浓度,同时提高催化剂的吸附和催化活性。

关键词：介质阻挡放电脱除NOx 铜系催化剂活性炭载体