Catalytic ozonation of oxalic acid using carbon nanofibres on macrostructured supports

2012 ◽  
Vol 65 (10) ◽  
pp. 1854-1862 ◽  
Author(s):  
J. Restivo ◽  
J. J. M. Órfão ◽  
M. F. R. Pereira ◽  
E. Vanhaecke ◽  
M. Rönning ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Batch Reactor ◽  
Catalytic Ozonation ◽  
Continuous Operation ◽  
High Catalytic Activity ◽  
Powder Form ◽  
Carbon Nanofibres ◽  
Structured Materials ◽  
Sintered Metal ◽  
Mesoporous Structures

Carbon nanofibres (CNFs) were grown on different macrostructured supports such as cordierite monoliths, carbon felts and sintered metal fibres. The resulting composites exhibited excellent resistance to attrition/corrosion and its porosity is mainly due to mesoporous structures. The CNF/structured materials were tested in the ozonation of oxalic acid in a conventional semi-batch reactor after being crushed to powder form, and in a newly designed reactor that may operate in semi-batch or continuous operation. The CNFs supported on the different structured materials exhibited high catalytic activity in the mineralization of oxalic acid.

scholarly journals TiO2 BEADS FOR PHOTOCATALYTIC DEGRADATION OF HUMIC ACID IN PEAT WATER

2011 ◽  
Vol 11 (3) ◽  
pp. 253-257 ◽  
Author(s):  
Winarti Andayani ◽  
Agustin N M Bagyo
Keyword(s):  
Aqueous Solution ◽  
Humic Acid ◽  
Oxalic Acid ◽  
Chemical Oxygen Demand ◽  
Photocatalytic Degradation ◽  
Uv Light ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Color Intensity ◽  
Before And After

Degradation of humic acid in aqueous solution containing TiO2 coated on ceramics beads under irradiation of 254 nm UV light has been conducted in batch reactor. The aim of this experiment was to study photocatalytic degradation of humic acid in peat water. The irradiation of the humic acid in aqueous solution was conducted in various conditions i.e solely uv, in the presence of TiO2-slurry and TiO2 beads. The color intensity, humic acid residue, conductivity and COD (chemical oxygen demand) of the solution were analyzed before and after irradiation.  The compounds produced during photodegradation were identified using HPLC. The results showed that after photocatalytic degradation, the color intensity and the COD value of the solution decreased, while the conductivity of water increased indicating mineralization of the peat water occurred. In addition, oxalic acid as the product of degradation was observed.

scholarly journals CATALYTIC OZONATION OF OXALIC ACID WITH MnO2/TiO2 AND Rh/TiO2

2006 ◽  
Vol 51 (4) ◽  
Author(s):  
CRISTINA QUISPE ◽  
JORGE VILLASEÑOR ◽  
GINA PECCHI ◽  
PATRICIO REYES
Keyword(s):  
Oxalic Acid ◽  
Catalytic Ozonation

Memory effect-enhanced catalytic ozonation of aqueous phenol and oxalic acid over supported Cu catalysts derived from hydrotalcite

2006 ◽  
Vol 33 (3-4) ◽  
pp. 247-259 ◽  
Author(s):  
M SHIRAGA ◽  
T KAWABATA ◽  
D LI ◽  
T SHISHIDO ◽  
K KOMAGUCHI ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Memory Effect ◽  
Catalytic Ozonation ◽  
Cu Catalysts

Catalytic ozonation of oxalic acid in an aqueous TiO2 slurry reactor

2002 ◽  
Vol 39 (3) ◽  
pp. 221-231 ◽  
Author(s):  
Fernando J. Beltrán ◽  
Francisco J. Rivas ◽  
Ramón Montero-de-Espinosa
Keyword(s):  
Oxalic Acid ◽  
Catalytic Ozonation ◽  
Slurry Reactor

Promoting effect of nitration modification on activated carbon in the catalytic ozonation of oxalic acid

2014 ◽  
Vol 146 ◽  
pp. 169-176 ◽  
Author(s):  
Hongbin Cao ◽  
Linlin Xing ◽  
Guangguo Wu ◽  
Yongbing Xie ◽  
Shaoyuan Shi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Oxalic Acid ◽  
Catalytic Ozonation ◽  
Promoting Effect

Catalytic ozonation of phenol and oxalic acid with copper-loaded activated carbon

2010 ◽  
Vol 17 (2) ◽  
pp. 300-306 ◽  
Author(s):  
Yi-fei Rao ◽  
Han-jin Luo ◽  
Chao-hai Wei ◽  
Ling-feng Luo
Keyword(s):  
Activated Carbon ◽  
Oxalic Acid ◽  
Catalytic Ozonation
Sign in / Sign up

Export Citation Format

Share Document