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efficiency is PAM, under the optimal conditions, the removals of Pb2+, Zn2+, Cu2+ and COD reduction from solution were 94.8%, 79.9%, 87.6% and 85%, respectively. In the advanced purification, the particle size... of the technology for wastewater treatment.Key words:heavy metal removal; mine drainage; coagulation-flocculation; corrosive electrochemistry......
; chalcopyrite; passive layer; electrochemistry 1 Introduction Chalcopyrite is the main source of copper in the world [1-3]. More than 80% copper is available as chalcopyrite, and around 20% copper...–pH–ORP dependence [J]. International Journal of Mineral Processing, 2008, 88(1-2): 37-44. [32] J, YAMADA R, INOUE C. Effect of pH reduction and ferric ion addition on the leaching......
J. Cent. South Univ. (2016) 23: 1823-1830 DOI: 10.1007/s11771-016-3236-4 Tuning microstructure and surface chemistry of reduced graphene oxide by mild reduction LENG Xian(冷娴), LIU Ru-tie(刘如铁), ZOU... nontoxic and mild reduction methods, which include thermal and chemical reduction with ethylene glycol, KOH and Fe powder. The changes in microstructure and surface chemistry of RGOs were extensively......
A strength reduction method based on double reduction parameters and its applicationYUAN Wei(袁维), BAI Bing(白冰), LI Xiao-chun(李小春), WANG Hai-bin(汪海滨) (State Key Laboratory of Geomechanics and Geotechnical Engineering (Institute of Rock and Soil Mechanics, Chinese Academy of Sciences), Wuhan 430071, China)Abstract:In the traditional strength reduction method, the cohesion and the friction angle......
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of Cu(p-OTs)2 and Cu(p-OTs)2/ethanolamine(1∶1) complex in CH3OH or DMF were characterized. The results show that the reduction of Cu(Ⅱ) in Cu(p-OTs)2 is via one two-electron step mechanism both in CH3OH and DMF. The reduction mechanism transforms to two one-electron steps in the case of Cu(p-OTs)2/ethanolamine(1∶1) in DMF. However, it does not change in CH3OH. All the Cu(Ⅱ)/ethanolamine(1∶1......
Electrochemistry of polyamidoamine dendrimers ester gel electrolytesCHEN Hong and MO Zunli1) College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China2) College of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China摘 要:<正> This paper described the first example......
surface, interface of bacteria and leaching solution is the root cause of the oxidation-reduction reaction. It is feasible to investigate and analyze the electrochemical oxidation behavior of pyrite... process of cathode, a reduction peak around -0.5 V (vs SCE) was observed. It could be interpreted as two possible reactions: 1) the reduction of S formed electrochemically during the oxidation scan......
as electrocatalyst for oxygen reduction in alkaline solutions[J]. Electrochemistry Communications, 2003, 5: 306－311. [4] Bocris J O’M, Abdu R. A theoretical study of the electrochemical reduction of oxygen[J... Electro-catalytic effect of manganese oxide on oxygen reduction at teflonbonded carbon electrode ZHOU De-bi(周德璧), L? Xin-kun(吕新坤), LIU Dan-ping(刘丹平) School of Chemistry and Chemical Engineering......
rate was. Key words: lattice parameter; chalcopyrite; phase transition; bioleaching; electrochemistry 1 Introduction Bioleaching technology is considered an appropriate way to recover metal from low... the bioleaching behavior of chalcopyrite. Furthermore, electrochemical research indicated that the chalcopyrite that dissolved faster had significantly higher conductivity and oxidation–reduction rate. DONG et al......
