共搜索到9256条信息,每页显示10条信息,共926页。用时:0小时0分0秒343毫秒
- matically, rather than indirectly by H2S produced during sulfate reduction. Fe0+UO22+ →Fe2++UO2(s)  ... reactor and 99.4% for ZVI+SRB reactor. At the early stage of the operation, the reduction activities of U(Ⅵ) and sulfate are inhibited to a certain degree because SRB needs an acclimation period......
Preparation of copper nanoparticles by chemical reduction method using potassium borohydride ZHANG Qiu-li(张秋利)1, YANG Zhi-mao(杨志懋)2, DING Bing-jun(丁秉钧)2, LAN Xin-zhe(兰新哲)1, GUO Ying-juan(郭莹娟)1... by chemical reduction method using potassium borohydride as reducing agent. The effects of reactant ratio, concentration of CuSO4, reaction temperature, and dispersant on the size of product and conversion......
Effect of Cerium Sulfate on Acidic Electroless Nickel Deposition刘海萍,李宁,毕四富摘 要:The effect of cerium sulfate on bath stability, deposition rate, reaction activation energy and deposit composition in acidic electroless nickel plating solutions was investigated. The influence mechanism of cerium sulfate on electroless nickel was also studied......
the hydrogen gas evolution. Formaldehyde slightly decreases the peak current density of stannous reduction and serves as an auxiliary brightener in the acid sulfate bath. The presence of mixed additives...Additive effects on tin electrodepositing in acid sulfate electrolytesFa-xin Xiao1,Xiao-ni Shen1,Feng-zhang Ren1,Alex A. Volinsky21. School of Materials Science and Engineering,Henan University......
arsenic is recovered [14-15]. The precipitation method of copper sulfate treated As-containing wastewater to prepare As2O3 [16-20]. This method consists of copper sulfate precipitation, SO2 reduction..., washing and drying after copper sulfate (industrial grade) was put into the neutralized wastewater and the pH value of the wastewater was adjusted to 8.0 [18]. 2.1.2 Reduction of copper arsenite......
]. Beijing: China University of Geosciences(Beijing), 2013: 60-120. [34] MACHEL H G. Bacterial and thermochemical sulfate reduction in diagenetic settings-Old and new insights[J]. Sedimentary Geology, 2001..., Kansas, and Oklahoma, USA. In: Sediment-hosted Zn-Pb ores[M]. Berlin: Springer, 1994: 104-138. [38] THOMAS J, ANDERSON G M. The role of thermochemical sulfate reduction in the origin of Mississippi Valley......
Introduction manner of sulfate acid for improving the performance of SO42–/CeO2 on selective catalytic reduction of NO by NH3宋忠贤1,张秋林1,宁平1,刘昕1,樊洁1,黄真真21. Faculty of Environmental Science... were synthesized by impregnation and sol-gel methods and used for selective catalytic reduction(SCR) of NOx by NH3. The results showed that the sulfated CeO2 catalysts prepared by sol-gel method......
Introduction manner of sulfate acid for improving the performance of SO42–/CeO2 on selective catalytic reduction of NO by NH3宋忠贤1,张秋林1,宁平1,刘昕1,樊洁1,黄真真21. Faculty of Environmental Science... were synthesized by impregnation and sol-gel methods and used for selective catalytic reduction(SCR) of NOx by NH3. The results showed that the sulfated CeO2 catalysts prepared by sol-gel method......
Influence of V2O5 Addition on Reduction of NO by C3H6 over Pt/V2O5/Al2O3 Monolithic Catalyst Yu Junjie1,Kang Shoufang1,HAO Zhengping1,Jiang Zheng1 (1.Research Center for Eco-Environmental Sciences... on the catalytic activity for NO reduction by C3 H6 under lean burn condition was investigated in detail.The results show that Pt/V2O5/Al2O3 has better activity of NO reduction than Pt/Al2O3 , adding V2O5 to Pt......
of sulfate is fastened apparently, meanwhile the ultimate sulfate reduction rate and Zn2+ removal rate are improved to a certain extent. The enhancement principle of iron was analyzed...系 Fig.4 Sulfate reduction velocities at different Zn2+ concentrations 原速率最大, 随着Zn2+浓度的增加反应速率逐渐降低. SRB实验中, 当Zn2+浓度分别为10, 25, 50, 75和90mg/L时, 其还原速率与空白实验相比分别降低了23%, 44%, 62%, 74%和87%. Zn2......