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J. Cent. South Univ. (2017) 24: 2799-2804 DOI: https://doi.org/10.1007/s11771-017-3694-3 Copper smelter slag treatment by ammonia solution:Leaching process optimization R. Nadirov1, L. Syzdykova2... slag processing by ammonia solution treatment was investigated. The central composite rotatable design (CCRD) and approximation method were used to determine the optimum conditions of zinc and copper......
Liquid nitrogen level meter for high-temperature superconductor (HTS)PARK Heecheol, JEONG Hwanjun, LEE Changyeung, KIM Purn, CHO Jangwon, KIM Seokho(School of Mechatronics, Changwon National University, Changwon 641-773, Korea)Abstract:Many kinds of high temperature superconductor (HTS) power machines such as HTS cable, HTS fault current limiter and HTS magnet are cooled by liquid nitrogen......
A novel fused iron catalyst for ammonia synthesis promoted with rare earth gangue WANG Rong1,LIN Jianxin1,WEI Kemei1,YU Xiujin1,LIN Bingyu1 (1.National Engineering Research Center of Chemical..., was used as the promoter of fused iron catalysts for ammonia synthesis. The result showed that the activity of the catalyst promoted with rare earth gangue was comparable with those of commercial......
Modification of Cu/ZSM-5 catalyst with CeO2 for selective catalytic reduction of NOx with ammonia刘雪松1,2,吴晓东1,2,翁端1,21. Key Laboratory of Advanced Materials of Ministry of Education, School..., but the high-temperature activity was weakened. The catalysts were characterized by X-ray diffraction(XRD), nitrogen physisorption, inductively coupled plasma optical emission spectrometry(ICP-OES......
Modification of Cu/ZSM-5 catalyst with CeO2 for selective catalytic reduction of NOx with ammonia刘雪松1,2,吴晓东1,2,翁端1,21. Key Laboratory of Advanced Materials of Ministry of Education, School..., but the high-temperature activity was weakened. The catalysts were characterized by X-ray diffraction(XRD), nitrogen physisorption, inductively coupled plasma optical emission spectrometry(ICP-OES......
of beryllium and ammonia nitrogen by biological aerated filter. PRESSMAN et al [20] used nitrifying biofilm to remove ammonia and copper simultaneously. ZHANG et al [21] used a dual chamber microbial fuel... and second sections was controlled at 20 min. The residual concentrations of copper and ammonia nitrogen are shown in Fig. 1(a). With increasing addition amount of MgCl2, the residual concentration......
Anode Plasma Electrolytic Saturation of Titanium Alloys with Nitrogen and OxygenP.N.Belkin,S.A.Kusmanov,A.V.Zhirov,V.S.Belkin,V.I.Parfenyuk摘 要:In this work, we investigated the features of the anode plasma electrolytic saturation of titanium alloys with nitrogen and oxygen. In this case, the titanium samples may be heated to 1050 ℃ using aqueous......
Influence of nitrogen gas on structure and properties of DLC films prepared by XeCl pulsed laser deposition CHEN Yu-qiang(陈玉强)1,PENG Hong-yan(彭鸿雁)1, 3, ZHAO Li-xin(赵立新)2, LI Min-jun(李敏君)1 XIA Yi... carbon (DLC) films were prepared by PLD process using 308 nm(XeCl) laser beam with high power (500 W) and high frequency(300 Hz). The effects of nitrogen pressure on the structure and properties......
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:1672-7207(2012)04-1211-06 Factors effecting mass transfer rates for air stripping of ammonia in multi-face-ball packed tower from ammonia-nitrogen wastewater WANG Hai-tao, ZHOU Kang-gen, PENG Jia-le, HU Yuan-juan (School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: The removal and recovery of concentrated ammonia from ammonia-nitrogen wastewater......
