Oxea hikes European n-propyl alcohol output

2020 ◽  
Vol 98 (15) ◽  
pp. 12-12
Keyword(s):  
2014 ◽  
Vol 955-959 ◽  
pp. 2200-2204
Author(s):  
Guo Kui Zeng ◽  
Gui Hua Li

The distribution behaviors of iodide complex of Cd (II) in the propyl-alcohol ammonium sulfate aqueous biphasic extraction system was experimentally investigated in this work. Cd (II) was found to be extracted from the propyl-alcohol phase due to its ion pair formation as CdI42-(PrOH2+)2 in the presence of NH4I and in HCL, and the associated extraction conditions were optimized. The experimental results indicated that cadmium can be efficiently extracted by the method, and an extraction rate of 99.1% for cadmium can be achieved under optimizing conditions.


2005 ◽  
Vol 475-479 ◽  
pp. 1849-1852
Author(s):  
Kyu Shik Shin ◽  
Joon Shik Park ◽  
Kwang Bum Park ◽  
Hyo Derk Park ◽  
Jeong Rim Kim ◽  
...  

Design and fabrication of micro mixing cells and detection cells were investigated. Glass micro mixing cells with island structures among channels were fabricated using sand blaster methods. Depth and width of mixing channel were 200 ㎛ and 180 ㎛ and island size was 90 ㎛ by 90 ㎛. Two 45° mirrors surfaces faced on each other in one detection cell which were fabricated by silicon anisotropic etching using 20% TMAH (Tetramethylammonium hydroxide) solution with 20% or 30% IPA (iso propyl alcohol) at 80°C, respectively. Up side glass wafer for mixing cell and down side silicon wafer for detection cell were bonded using anodic bonding method at 350ı, -600 V and 300 N. Synthetic indophenol was injected at inlet and moved to the detection cell through the mixing channel. HeNe laser of 632.8 nm was focused on one side of a 45° mirror, and passed through indophenol solution until the other side of a 45° mirror. The light of 632.8 nm was absorbed in indophenol solution between two 45° mirrors at detection cell. By the Beer-Lambert’s law, indophenol concentration could be calculated from the measured result of the absorbance.


2019 ◽  
Vol 134 ◽  
pp. 110904
Author(s):  
A.M. Api ◽  
F. Belmonte ◽  
D. Belsito ◽  
S. Biserta ◽  
D. Botelho ◽  
...  

2015 ◽  
Vol 89 (6) ◽  
pp. 952-957
Author(s):  
E. M. Rubtsova ◽  
T. M. Varlamova ◽  
Y. B. Monakhova ◽  
S. P. Mushtakova

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