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)-04-0875-12 中图分类号:TF831 文献标志码:A 黄金冶炼过程产生大量氰化提金废水[1-2].除含微量金外,还含有较高浓度的铜,锌,铁等有价金属离子[3].以山东某厂选矿废水为例,金含量仅0.5~2 mg/L.但是,铜含量高达 2.4 g/L[4].为了满足环保要求,大部分...,%；为料液中的初始金/铜离子质量浓度,mg/L；为萃取过程中某一时刻萃余液中的金/铜离子质量浓度,mg/L. 1.5.2 反萃率的计算 实验中金,铜反萃率(S)的计算公式如下: ......
(NLR) was raised by adjusting the substrates concentrations (100- 180 mg/L NH4+-N, 120-208 mg/L NO2--N) and the HRT (4.76-2.38 h). Thereafter (41-153 d), the NLR of the UASB reactor was increased in two consecutive steps. Firstly, the NLR was increased by shortening the HRT from 2.38 to 1.06 h by setting NH4+-N and NO2--N at 208 and 250 mg/L, respectively. The subsequent elevation of NLR......
calculations were used [14-16]. Commercial purity aluminum with the following contents of the main impurities (wt.%: 0.10 Si, 0.112 Fe, 0.02 Mg, 0.023 Mn, 0.015 Cu, 0.031 Zn, 0.001 Ga, 0.001 Ti......
mg/L的污酸,按照固液比0.04 kg/L加入酸改性钢渣,在氧化剂作用下并在室温振荡反应120 min,处置后污酸残余砷浓度降至88.44 mg/L,砷去除效率达到97.89%,除砷后钢渣浸出毒性低于危险废弃物鉴别标准
with varying pore structures and concluded that Mg composition has gradually changed in the bonding region. GANDRA et al [21] developed aluminum-based functionally graded MMC by incorporating ceramic..., mechanical properties, wear and fracture behavior. GANGIL et al [29] investigated the FSW of hybrid composites produced by FSP on Al-Zn-Mg-Cu alloy (AA7050-T7451). The findings indicated that when......
nanotubes [J]. Materials Science and Engineering A, 2013, 572: 83-90. [28] LI H, FAN J, GENG X, LI B, LIANG C, WANG H, LI Y, QIAO Z, KANG J. Alumina powder assisted carbon nanotubes reinforced Mg......
into the organic phase (in mg/L) versus mole fraction of Cyphos IL 101 (Fig. 3) that an extracted complex with molar ratio of metal/ionic liquid complex being 1:1 was formed with indium... containing 556 mg/L of indium. From Table 1, it was found that (96.2±0.15)% and 100% stripping rates were obtained with 0.1 and 1.0 mol/L H2SO4, respectively. Nearly 70% stripping rates were found......
on a Nicolet-380 Fourier-transform infrared spectrometer. X-ray photoelectron (XPS) spectra were recorded on a Shimadzu Axis Ultra spectrometer with Mg Kα radiation and XPS Peak Fit was used as the fitting......
体吸收的热流量约为1 J/mm2,加热时间为5 ms.加热光斑直径为3 mm,脉冲频率为5 Hz.加热时间为10,20,30及40 s,对应循环加热次数为50,100,150和200次.期间用天平记录试样质量变化,天平称量精度为0.1 mg. 1.3 脉冲激光加热温度场数值模拟 采用SYSWELD软件对脉冲激光加热过程温度场进行模拟.根据脉冲激光加热试样的实际尺寸(10 mm×10......
experiment. Approximately 20 mg of sample was placed in alumina pan and heated from room temperature to 600 °C at a rate of 10 °C/min under the nitrogen atmosphere with a flow rate of 20 mL/min. All samples......
