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Adsorption of erbium(Ⅲ) on D113-Ⅲ resin from aqueous solutions: batch and column studies熊春华,蒙媛,姚彩萍,沈忱Department of Applied Chemistry,Zhejiang Gongshang University摘 要:column data to determine the characteristic parameters of column useful for process design.Er(Ⅲ) ion could be eluted by using the 4.0 mol/L HCl solution.The characterization of both before......
圆柱形过滤器端部缠绕的堆积问题 王永章1,富宏亚1,王显峰2 (1.哈尔滨工业大学机电学院,哈尔滨,150001;2.南京航空航天大学材料科学与技术学院,南京,210016) 摘要:在对圆柱形过滤器进行缠绕成型时,由于缠绕角,端部过渡长度以及芯模直径的大小等影响,过滤器端部经常出现纤维堆积的现象,导致纤维缠绕精度下降,机床运动干涉而造成材料浪费.经理论分析和仿真试验,提出了分别基于改变摩擦系数,调整轨迹跳越数和调整端部过渡段的减轻堆积的方法,最后应用该方法对航空用油过滤器进行缠绕成型试验.验证该方法的正确性和可行性. 关键词:端部堆积; 缠绕; 圆柱形过滤器; End accumulation; Winding; Column strainer; [全文内容正在添加中] ......
of column is the best choice for punching capacity prediction of flat plates and 0.5h0 is appropriate for that of column footings. The Chinese and American codes take the control perimeter affine in shape to the circumference of column connected, leading to a tendency reverse to the test fact. In order to account for the shape effect of column section, a rational treatment is suggested which equivalently......
of ion-absorbed rare earth with column leaching experiment determined based on Green-Ampt model YIN Sheng-hua1, 2, XIE Fang-fang1, 2 (1. Key Laboratory of High-Efficient Mining and Safety of Metal.... Conducting a column leaching experiment on the ion-adsorption type rare earth source from Gan Nan, its optimized infiltration head is 26.69 cm. The infiltrate rate of interface determines......
Trans. Nonferrous Met. Soc. China 27(2017) 2691-2703 Enhancing recovery of uranium column bioleaching by process optimization and kinetic modeling H. ZARE TAVAKOLI1, M. ABDOLLAHY1, S. J. AHMADI2... 2016; accepted 7 November 2016 Abstract: This research aimed to enhance the column bioleaching recovery of uranium ore by Acidithiobacillus ferrooxidans. Seven factors were examined......
to Mo of 53.33 are obtained after column test. Key words: high concentrated tungstate and molybdenum solution; ion exchange; batch tests; column tests 1 Introduction Nowsday, tungsten and molybdenum...; me is the equilibrium adsorption amount. In column tests, 287 mL of D309 resin was wet-packed into the glass column (20 mm in diameter, 900 mm in height) with solution containing 70 g/L WO3 and 28.97 g......
Effect of CO2 and N2 on microbial community changes during column bioleaching of low-grade high pyrite-bearing chalcocite oreCHEN Bo-wei(陈勃伟), WU Biao(武彪), LIU Xing-yu(刘兴宇), WEN Jian-kang(温建康) (National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals,Beijing 100088, China)Abstract:Simulated heap bioleaching of low-grade high pyrite-bearing chalcocite......
J. Cent. South Univ. Technol. (2009) 16: 0569-0574 DOI: 10.1007/s11771-009-0095-2 Adsorption of Pb2+ on macroporous weak acid adsorbent resin from aqueous solutions: Batch and column studies... of D152 resin for the removal of Pb2+. The present work was undertaken to study the adsorption of Pb2+ on macroporous D152 resin in aqueous solutions in the form of batch and column processes. The effects......
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Enhanced separation of praseodymium and neodymium by kinetic"push and pull"system of[A336][NO3]-DTPA in a column extractorXiaoqin Wang1,2,Kun Huang1,3,Wenjuan Cao1,2,Pan Sun1,2,Na Sui3,Weiyuan... for improving the separation between Pr(Ⅲ) and Nd(Ⅲ)by a so-called kinetic "push and pull" system consisting of [A336][NO3] and DTPA in a column extractor.It is revealed that,when organic extractant [A336......