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| 1 | Extraction studies of cobalt (Ⅱ) and nickel (Ⅱ) from chloride solution using PC88A显示文摘Solvent extraction study of cobalt and nickel were carried out from a chloride solution with a high ratio of Co to Ni using the sodium salt of PC88A as extractant diluted in kerosene. The solution was generated in batches by leaching a tungsten super alloy scraps. The results show that extraction rate of metal ions increases with increase of aqueous phase pH value. The pH0.5 value difference of 1.40 with PC88A indicates the possible separation of cobalt and nickel. Increase of the concentration of the solvent can enhance the percentage extraction of both metal ions. Improvement of temperature is beneficial to extraction separation of cobalt and nickel. Extraction and stripping processes were also studied in a cross-current solvent extraction unit and the results were also given. | 罗琳 魏建宏 吴根义 F. TOYOHISA S. ATSUSHI | 2006 | 中国有色金属学会会刊:英文版2006,16,3: | 12 |
| 2 | 矿区复垦土壤重金属含量分布与光谱特征研究——以徐州市柳新矿区为例显示文摘以徐州柳新矿区复垦土壤为研究对象,采用传统采样检测方法分析了Cd,Cu,Pb,Zn,Cr等重金属元素在土壤中的含量,借助ISI921VF系列野外地物光谱辐射计和IR981短波红外地物光谱仪野外测量样点土壤的光谱,提取其光谱特征,并对光谱特征参数与土壤中重金属含量进行相关性分析,建立了利用土壤光谱反射率估算土壤重金属含量的预测模型.结果表明:通过分析土壤反射光谱特征能间接反映土壤重金属含量.从而实现土壤重金属含量的间接测定,为土壤重金属污染的调查与监测提供一种简单、快速的测定方法. | 董霁红 于敏 赵银娣 张珏 TOYOHISA Fujita | 2012 | 中国矿业大学学报2012,41,5: | 10 |
| 3 | Two-step accelerated mineral carbonation and decomposition analysis for the reduction of CO_2 emission in the eco-industrial parks显示文摘Carbon dioxide(CO2) emissions are a leading contributor to the negative effects of global warming. Globally, research has focused on effective means of reducing and mitigating CO2 emissions. In this study, we examined the efficacy of eco-industrial parks(EIPs) and accelerated mineral carbonation techniques in reducing CO2 emissions in South Korea.First, we used Logarithmic Mean Divisia Index(LMDI) analysis to determine the trends in carbon production and mitigation at the existing EIPs. We found that, although CO2 was generated as byproducts and wastes of production at these EIPs, improved energy intensity effects occurred at all EIPs, and we strongly believe that EIPs are a strong alternative to traditional industrial complexes for reducing net carbon emissions. We also examined the optimal conditions for using accelerated mineral carbonation to dispose of hazardous fly ash produced through the incineration of municipal solid wastes at these EIPs. We determined that this technique most efficiently sequestered CO2 when micro-bubbling, low flow rate inlet gas, and ammonia additives were employed. | Seok Jung Li Pang Wang Gjergj Dodbiba Toyohisa Fujita | 2014 | Journal of Environmental Sciences2014,26,7: | 4 |
| 4 | 热浸镀锌层界面的微区电化学腐蚀行为显示文摘目的探究钢铁热浸镀锌的镀层/钢基体界面的微区电化学特性及腐蚀行为。方法采用扫描电化学显微镜(SECM)分析技术,研究镀层/钢基体界面在0.1 mol/L NaCl溶液腐蚀过程中微区电流的演变过程,结合扫描电镜(SEM)、能谱仪(EDS)、3D显微镜以及X射线衍射技术(XRD)等分析腐蚀产物的物相组成与分布规律。结果在腐蚀过程中,镀锌钢的腐蚀产物主要分布在热浸镀锌层界面处靠近钢基体的一侧,在镀锌层表面的分布较少,腐蚀产物主要由Zn_(5)(OH)_(8)Cl_(2)、Zn_(5)(OH)_(6)(CO_(3))_(2)与ZnO等物相组成。在腐蚀开始阶段,钢基体区域的SECM还原电流(I=1.2)大于镀锌层(I=1.1)。随着腐蚀时间的延长,镀层/钢基体界面处的SECM还原电流整体降低,同时在界面靠近钢基体一侧存在电流凹陷区(I=1.0),表明腐蚀产物主要沉积在此处,并对镀层的腐蚀起到保护作用。此外,在腐蚀过程中氧气的消耗主要发生在钢基体区域,随着腐蚀时间的增加,镀层和钢基体表面的溶解氧含量都逐渐降低。结论在浸泡腐蚀过程中,镀锌层作为阳极,溶解生成Zn^(2+),并向钢基体区域扩散,同时钢基体表面消耗氧气,还原形成OH–向镀锌层区域扩散。Zn^(2+)与OH^(–)以及溶液中其他离子结合,生成腐蚀产物,在靠近镀层/钢基体界面处的钢基体一侧沉淀,对钢基体起到一定的保护作用。 | 林学亮 王友彬 辛延琛 高锋 韦悦周 Toyohisa FUJITA | 2022 | 表面技术2022,51,9: | 3 |
| 5 | 从模拟高放射废液中电化学回收钯和银显示文摘为从高放射废液(HLLW)中回收钯和银,采用循环伏安法和恒电位沉积法研究钯和银在模拟硝酸溶液中的电化学行为。利用扫描电子显微镜(SEM)和X射线衍射仪(XRD)观察沉积产物的形貌并分析其组成。结果表明,在单独电沉积银时亚硝酸根的生成促进银的溶解。当同时电沉积钯和银时,相同时间内更多金属被沉积,且沉积的银没有再出现溶解。在-0.4~-0.6 V (vs MSE)的电位下,溶液中的金属被完全电沉积回收,沉积物组成为银和氢化钯。钯的电沉积可以促进析氢,随后加速亚硝酸根和氢气之间的反应,使溶液中的亚硝酸浓度降低,从而抑制银的再溶解。 | 王友彬 邹睿 韦悦周 Tsuyoshi ARAI Toyohisa FUJITA | 2022 | Transactions of Nonferrous Metals Society of China2022,32,3: | 2 |
| 6 | A novel approach for evaluating the performance of eco-industrial park pilot projects显示文摘 | Seok Jung Gjergj Dodbiba Song Hwa Chae Toyohisa Fujita | 2013 | Journal of Cleaner Production2013,,: | 2 |
| 7 | Invited Review Reduction,reuse and recycle of spent Li-ion batteries for automobiles:A review显示文摘The demand for Li-ion batteries (LIBs) for vehicles is increasing. However, LIBs use valuable rare metals, such as Co and Li, aswell as environmentally toxic reagents. LIBs are also necessary to utilize for a long period and to recycle useful materials. The reduction, reuse,and recycle (3R) of spent LIBs is an important consideration in constructing a circular economy. In this paper, a flowsheet of the 3R of LIBs isproposed and methods to reduce the utilization of valuable rare metals and the amount of spent LIBs by remanufacturing used parts and designingnew batteries considering the concept of 3R are described. Next, several technological processes for the reuse and recycling of LIBs are introduced.These technologies include discharge, sorting, crushing, binder removal, physical separation, and pyrometallurgical and hydrometallurgicalprocessing. Each process, as well as the related physical, chemical, and biological treatments, are discussed. Finally, the problem of developedtechnologies and future subjects for 3R of LIBs are described. | Toyohisa Fujita Hao Chen Kai-tuo Wang Chun-lin He You-bin Wang Gjergj Dodbiba Yue-zhou Wei | 2021 | International Journal of Minerals,Metallurgy and Materials2021,28,2: | 2 |
| 8 | Calcination of low-grade laterite for concentration of Ni by magnetic separation显示文摘 | Jungah Kim Gjergj Dodbiba Hideaki Tanno Katsunori Okaya Seiji Matsuo Toyohisa Fujita | 2010 | Minerals Engineering2010,,4: | 1 |
| 9 | A DBF self-beam steering array antenna for mobile satellite applications using beaming- space maximal-ratio combination 显示文摘 | Ryu M Toyohisa T Akio H | 1999 | IEEE Transactions on Vehicular Technology1999,48,3: | 1 |
| 10 | Sorting Techniques for Plastics Recycling显示文摘This paper presents the basic principles of three different types of separating methods and a general guideline for choosing the most effective method for sorting plastic mixtures. It also presents the results of the tests carried out for separation of PVC, ABS and PET from different kinds of plastic mixtures in order to improve the grade of the raw input used in mechanical or feedstock recycling. | Gjergj Dodbiba Jun Sadaki Atsushi Shibayama Toyohisa Fujita | 2006 | 过程工程学报2006,6,2: | 1 |
| 11 | Surgical management of retinal detachment associated with myopic macular hole: anatomic and functional status of the macula显示文摘 | Mikio Ichibe Toyohisa Yoshizawa Kenji Murakami Masayuki Ohta Yoshimi Oya Susumu Yamamoto Shigeo Funaki Haruko Funaki Yumi Ozawa Eriko Baba Haruki Abe | 2003 | American Journal of Ophthalmology2003,,2: | 1 |
| 12 | Anew water-soluble host molecule derived from thiacalixarene显示文摘 | Iki Nobuhiko Toyohisa F Sotaro M | 1998 | Chemistry Letters1998,,: | 1 |
| 13 | The recycling of plastic wastes from discarded TV sets: comparing energy recovery with mechanical recycling in the context of life cycle assessment显示文摘 | Gjergj Dodbiba Kunihiko Takahashi Jun Sadaki Toyohisa Fujita | 2006 | Journal of Cleaner Production2006,,4: | 1 |
| 14 | Recovery of ttmgsten and vanadium from tungsten alloy scrap显示文摘 | LIN L LIU K ATSUSHI S WANTAI Y TOYOHISA F OSAMU S AKIRA K | 2004 | Hydrometallurgy2004,72,12: | 1 |
| 15 | 酸性溶液中铼的电沉积行为显示文摘采用电化学循环伏安法、恒电位沉积法和电化学石英微晶天平(EQCM)研究铼在酸性溶液中的电沉积行为。结果表明:当溶液接近中性(pH=6)时,金属铼难以被还原出来;当溶液酸度较低(pH=3)时,电沉积产物含有铼的氧化物(ReO_(3));当溶液酸度较高时(pH=1),电沉积产物为金属铼,所得产物的微观形貌中存在明显的裂纹;且随着溶液中ReO_(4)^(-)浓度的增加,铼的电沉积得到促进。在1.0 mmol/L ReO_(4)^(-)(pH=1)溶液中铼的沉积电位为−0.68 V。通过恒电位沉积得出不同条件下的电解效率,最高可达5.62%。 | 洪标 王友彬 李锋 韦悦周 Toyohisa FUJITA | 2021 | 中国有色金属学报2021,31,3: | 1 |
| 16 | Studies on synthesis of new collectors and their effects on gold显示文摘 | Jiang Yuren Xue Yulan Toyohisa Fujita | 1993 | Resource Processing1993,40,4: | 1 |
| 17 | Architecture of Data Mining Server :Datafront/Serve显示文摘 | Hitoshi Ashida * Toyohisa Morita * | 1999 | IEEE1999,19,11: | 1 |
| 18 | Evaluationof a recycling process for printed circuit board by physical separation and heat treatment 显示文摘 | Toyohisa Fujita Hiroyuki Ono Gjergi Dodbiba etaI | 2014 | Waste Management2014,,34: | 1 |
| 19 | Application of an indi-rect immunefluorescene test for detection of mycoplasma pneumo-niae in respiratory exudates显示文摘 | YoshikazuH Junji SH Toyohisa MA | 1991 | J Clin Microbiol1991,29,9: | 1 |
| 20 | Recovering Indium from the Liquid Crystal Display of Discarded Cellular Phones by Means of Chloride-Induced Vaporization at Relatively Low Temperature显示文摘 | Kunihiko Takahashi Atsushi Sasaki Gjergj Dodbiba Jun Sadaki Nobuaki Sato Toyohisa Fujita | 2009 | Metallurgical and Materials Transactions A2009,,4: | 1 |