Search Results 1-20 of 208

  • Characterization of Silica-coated Fe<sub>3</sub>O<sub>4</sub> Prepared Using Electrooxidation Method under Various Silica Source Concentration and Its Application for Thermoresponsive Polymer Immobilization  [in Japanese]

    Tomonaga Hitoshi , Hayashi Kodai , Matsuyama Tatsushi , Ida Junichi

    … <p>The objectives of this study are 1) to investigate the effect of silica source concentration on the properties of the silica-coated magnetite nanoparticle (MNP) prepared using the electrooxidation method, and (2) to apply the resulting silica-coated MNP for the immobilization of thermoresponsive copolymer, (poly(NIPAM-<i>co</i>-AA)), which we developed for heavy metal ion recovery. …

    Journal of the Society of Powder Technology, Japan 58(3), 111-118, 2021

    J-STAGE 

  • The Influence of Combined Carbonation and Physical Separation on Heavy Metal Elution from Bottom Ash  [in Japanese]

    Kochi Haruna , Ueda Kento , Kubota Hiroshi , Shigeizumi Koga , Sato Kenichi , Fujikawa Takuro , Koga Chikashi , Sakanakura Hirofumi , Iino Shigenori , Back Seungki

    <p>一般廃棄物焼却主灰の安定化処理に関して、CO<sub>2</sub>による炭酸化はPb溶出抑制への効果が報告されている。エアテーブル等の物理選別による有価金属の回収も欧州を中心に行われている。本研究では、焼却主灰の土木資材化を目的として、炭酸化と各物理選別法(エアテーブルと渦電流)を組み合わせた処理が重金属の溶出特性へ与える影響を調査した。各処理灰について …

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management 31(0), 377, 2020

    J-STAGE 

  • Anti-bacterial Effects of MnO<sub>2</sub> on the Enrichment of Manganese-oxidizing Bacteria in Downflow Hanging Sponge Reactors

    Matsushita Shuji , Hiroe Takafumi , Kambara Hiromi , Shoiful Ahmad , Aoi Yoshiteru , Kindaichi Tomonori , Ozaki Noriatsu , Imachi Hiroyuki , Ohashi Akiyoshi

    … to develop reactors for enriching manganese-oxidizing bacteria (MnOB), which may then be used to treat harmful heavy metal-containing wastewater and in the recovery of useful minor metals. …

    Microbes and Environments 35(4), n/a, 2020

    J-STAGE 

  • Uranium localization and tissue alteration in developing kidney  [in Japanese]

    TAKEDA Shino , UEHARA Akihiro , OIKAWA Masakazu , NUMAKO Chiya , TERADA Yasuko , TANAKA Izumi , ISHIHARA Hiroshi

    … <p>Uranium is a nephrotoxic heavy metal. … Regenerating and damaged tubules were observed in the restricted regions surrounded the uranium concentrated areas at the recovery phase. …

    Annual Meeting of the Japanese Society of Toxicology 47.1(0), P-114, 2020

    J-STAGE 

  • Advantages of Stimuli-responsive Surfactant Gel for Removal of Nanomaterials from Water  [in Japanese]

    MORITA-IMURA Clara

    <p>界面活性剤が形成する分子集合体は,可溶化や分散といった作用を通じて,ナノ物質の運搬および保持の用途に広く用いられてきた。近年では,界面活性剤に類する構造を持つ分子の自己集合によって得られる「低分子ゲル」が注目を集めており,これを用いたナノ物質の回収が報告されている。このようなゲル化剤として働く界面活性剤に,pHや温度,光といった外部刺激に対する応答作用を組み入れると,ナノ物質回収 …

    Oleoscience 20(9), 431-437, 2020

    J-STAGE 

  • Determination of Trace Anions in Heavy Metal Salt Reagents Using an Ion Chromatograph Coupled with an In-line Metal Elimination Device

    SUZUKI Seiichi , YAMAMOTO Takahisa , KOBAYASHI Yasuyuki , INOUE Yoshinori , YOSHIKAWA Kenji , TOYAMA Takeshi

    <p>重金属イオンを高濃度に含む試料中の微量陰イオンの定量を目的として,陽イオン交換樹脂を充填した金属除去デバイスを結合したイオンクロマトグラフの適用性評価を行った.本システムを用いて,塩化コバルト六水和物及び酢酸亜鉛二水和物中の陰イオンを測定した.試薬塩化コバルト六水和物から臭化物イオン,硝酸イオン及び硫酸イオンが検出され,定量値はそれぞれ14.4 μg L<sup>−1 …

    BUNSEKI KAGAKU 69(6), 305-310, 2020

    J-STAGE 

  • Detecting Gold Biomineralization by Delftia acidovorans Biofilms on a Quartz Crystal Microbalance

    Riccardo Funari , Rosa Ripa , Bill Söderström , Ulf Skoglund , Amy Q. Shen

    … The extensive use of gold in sensing, diagnostics, and electronics has led to major concerns in solid waste management since gold and other heavy metals are nonbiodegradable and can easily accumulate in the environment. … acidovorans is able to neutralize toxic soluble gold by excreting a nonribosomal peptide, which forms extracellular gold nanonuggets via complexation with metal ions. …

    ACS Sensors 4(11), 3023-3033, 2019-10-21

    IR 

  • Improvement of heavy metal recovery performance by microorganisms and nematodes  [in Japanese]

    Yamada Kohei , Kurahashi Kennsuke , Hoshi Hideyuki , Yoshihara Shizue , Tokumoto Hayato

    <p>重金属含有のバイオマスを嫌気発酵分解する際に、重金属を含有した微生物の集塊である発酵汚泥から重金属を除染する必要がある。そこで、発酵汚泥に線虫を播種し、微生物が吸収した重金属を線虫体内に移行できるのかどうか、プロセス化に向けた検討を行った。対象の重金属には、カドミウム(Cd)を用いた。天然環境から採取した線虫にCd含有の汚泥培養液を給餌した結果、良好な増殖が見られ、採取した線虫群 …

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management 30(0), 473, 2019

    J-STAGE 

  • Removal of Heavy Metals from Industrial Wastewater by Precipitation and Foam Separation Using Lime and Casein

    Maralmaa Byambaa , Erdenechimeg Dolgor , Shiomori Koichiro , Suzuki Yoshihiro

    … Background and Objective: Even today, a strong need exists for the quick and easy removal and recovery of heavy metals from industrial wastewater at low cost. … In this study, recovery of heavy metals from artificial wastewater containing Cr, Cu, Cd, Pb and Mo (each concentration, 10 mg LG1) by precipitation and foam separation using lime and milk casein was investigated. …

    Journal of Environmental Science and Technology 11(1), 2018-01

    IR 

  • Existent State of the Metal Phases in Municipal Waste Incineration Bottom Ash and Recovery via Physical Sorting  [in Japanese]

    Owada Shuji , Sugisawa Takeru

    一般廃棄物の焼却主灰からの金属回収を念頭に置き,ガス化燃焼の前処理としてのキルン炉より排出される焼却主灰を対象に,ある典型的な物理選別フローで処理された各種産物の分析を行い,その処理の各工程における各種成分の挙動の相関性を検討して,各元素のフィード中での存在状態,各種産物の特徴を把握し,物理選別における破砕・粉砕を含めた各工程の意義を明らかにし,上記目的に沿った物理選別フロー構築に関する留意点を提 …

    Material Cycles and Waste Management Research 29(5), 366-373, 2018

    J-STAGE 

  • Extractive Separation of Trivalent Rare Earth Metal Ions with Phenylphosphoric Acid Type of Trident Molecule for Rare Metal Recovery

    OHTO Keisuke , MURASHIMA Hiromasa , MORISADA Shintaro , KAWAKITA Hidetaka , WENZEL Marco , WEIGAND Jan J. , GLOE Karsten

    … <p>Phenylphosphoric acid type of tripodal compound has been prepared to investigate extraction of trivalent rare earth metal ions. … Such high ability may lead poor intragroup separation efficiency of rare earth metal ions. … The result for 2 : 1 stoichiometry of tripodal reagent to heavy rare earths did not mention the inflexion point in the lanthanoid series. …

    International Journal of the Society of Materials Engineering for Resources 23(1), 36-41, 2018

    J-STAGE 

  • Addition of Ca(OH)2 for ammonia recovery during composting of organic sludge  [in Japanese]

    Koyama Mitsuhiko , Nagao Norio , Syukri Fadhil , Rahim Abdullah Abdul , Kamarudin Mohd Salleh , Tatsuki Toda , Quyen Tran Ngoc Minh , Nakasaki Kiyohiko

    コンポスト化の過程において、有機態窒素の分解によって生じるアンモニアガスを微細藻類培養の窒素源として利用することにより、病原菌や重金属を含まないクリーンな窒素源として医薬品・化粧品・健康食品の原料となる高付加価値物質を生産する微細藻類の大量培養に応用することが期待される。本研究では、有機性汚泥のコンポスト化におけるアンモニア回収効率の向上を目的として、消石灰の添加時期ならびにpH条件がコンポスト化 …

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management 29(0), 239, 2018

    J-STAGE 

  • Extraction of Heavy Metals from Simulant Citrate Leachate of Sewage Sludge by Ion Exchange  [in Japanese]

    P. BEZZINA James , T. M. AMPHLETT James , D. OGDEN Mark

    … One of the main issues with the use of sewage sludge as a fertiliser source is the concentration of heavy metals, particularly copper, lead and zinc. … Economical alternatives to regular lixiviants (sulphuric acid, nitric acid, etc.) for the leaching of heavy metals from solids are weak complexing acids. … Ion exchange technology offers an effective method for the recovery of these metals from the leachate. …

    Journal of Ion Exchange 29(3), 53-59, 2018

    J-STAGE 

  • Bacterial glycerol oxidation coupled to sulfate reduction at neutral and acidic pH

    Santos Sidnei C. , Liebensteiner Martin G. , van Gelder Antonie H. , Dimitrov Mauricio R. , Almeida Paulo F. , Quintella Cristina M. , Stams Alfons J. M. , Sánchez-Andrea Irene

    … Our data indicate that glycerol promotes the growth of sulfate-reducing communities to form sulfide, which can be used to precipitate and recover heavy metals.</p> …

    The Journal of General and Applied Microbiology 64(1), 1-8, 2018

    J-STAGE 

  • Binding Capacity of Halophilic Histidine-rich Metal-binding Protein and Potential Application for Bio-sorption of Heavy-metals from Saline Environments

    OTSUJI Daiki , KUROKI Michiru , TOKUNAGA Hiroko , YAMAGUCHI Rui , TOKUNAGA Yuhei , ISHIBASHI Matsujiro , ARAKAWA Tsutomu , TOKUNAGA Masao

    好塩性海洋細菌<i>Chromohalobacter salexigens</i>由来ヒスチジン高含有金属結合タンパク質(HP)は,<i>Treponema pallidum</i>由来のTroAなどの良く研究されている他の金属結合タンパク質のアミノ酸配列と比較した場合,46アミノ酸残基からなるユニークな挿入配列(多くのヒスチジン残基を含むIS46配 …

    Bulletin of the Society of Sea Water Science, Japan 71(5), 308-314, 2017

    J-STAGE 

  • Ionic Stress Induced Cytotoxic Effect of Cadmium and Nickel Ions on Roots of <i>Allium cepa</i> L.

    Gantayat Smruti , Mania Smaranika , Pradhan Chinmay , Das Anath Bandhu

    Heavy metal induced oxidative damage showed significant reduction in root length, mitotic index, total protein content and catalase (CAT) activity and increased cell abnormality index as well as proline content. … Recovery experiments till 48 h showed significant changes in antioxidative enzyme systems of the cells reverting back to normal. …

    CYTOLOGIA 83(2), 143-148, 2017

    J-STAGE 

  • Probing Study on Separating Pb, Zn, and Fe from Lead Slag by Coal-based Direct Reduction

    Wang Chuanlong , Li Keqing , Yang Huifen , Li Caihong

    … <p>Water-quenched lead slags are classified as hazardous materials because they contain a certain amount of heavy metals. … The following optimum process parameters were proposed: weight ratios of slag, coal ratio of 30%, additive ratio of 15%, and roasting at 1200°C for 90 min. Under these conditions, a magnetic concentrate containing 93.73% total iron and recovery rate of 80.32% was obtained. …

    ISIJ International 57(6), 996-1003, 2017

    J-STAGE 

  • Change in redox state and heat shock protein expression in an Indian major carp <i>Cirrhinus cirrhosus</i> exposed to zinc and lead

    Moniruzzaman Mahammed , Midday Puja , Dhara Anindita , Das Debjit , Ghosal Indranath , Mukherjee Debosree , Chakraborty Suman Bhusan

    … <p>Fish are exposed to different heavy metals that may induce numerous physiological changes. … In the present study, we examined the redox state in response to a severe stress resulting from two heavy metals (Zinc and Lead) contamination in carp <i>Cirrhinus cirrhosus</i>. … Fish were exposed to 1/10th of LC50 of the respective metals [zinc chloride (2.72 mg/L) and lead acetate (2.53 mg/L)] for 30 days and allowed to recover for another 30 days without any metal exposure. …

    The Journal of Toxicological Sciences 42(6), 731-740, 2017

    J-STAGE  Ichushi Web 

  • Recrystallization Behavior and Texture Evolution in Severely Cold-rolled Fe-0.3mass%Si and Fe-0.3mass%Al Alloys

    Tomita Miho , Inaguma Tooru , Sakamoto Hiroaki , Ushioda Kohsaku

    … In Fe-0.3mass%Al alloy, dynamic recovery during heavy cold-rolling and substantial subgrain growth during low temperature annealing (350°C) occurred, similar to the case of pure Fe and different from that of Fe-0.3mass%Si alloy. …

    ISIJ International 57(5), 921-928, 2017

    J-STAGE 

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