Photocatalytic Degradation of the Textile Dye Reactive Orange 16 in the Presence of TiO2 Suspensions

1999 ◽  
Vol 20 (5) ◽  
pp. 479-487 ◽  
Author(s):  
I. Poulios ◽  
I. Aetopoulou
Keyword(s):  
Photocatalytic Degradation ◽  
Textile Dye ◽  
Reactive Orange 16 ◽  
Reactive Orange

scholarly journals Influence of some sol-gel synthesis parameters of mesoporous TiO2 on photocatalytic degradation of pollutants

2016 ◽  
Vol 22 (1) ◽  
pp. 65-73
Author(s):  
Aleksandar Golubovic ◽  
Ivana Veljkovic ◽  
Maja Scepanovic ◽  
Mirjana Grujic-Brojcin ◽  
Natasa Tomic ◽  
...  
Keyword(s):  
Anatase Phase ◽  
Sol Gel ◽  
Tetrabutyl Titanate ◽  
Textile Dye ◽  
Reactive Orange 16 ◽  
Higher Temperature ◽  
Tio2 Nanopowders ◽  
Gel Technique ◽  
Reactive Orange ◽  
Sol Gel Synthesis

The titanium dioxide (TiO2) nanopowders were produced by sol-gel technique from tetrabutyl titanate as a precursor by varying some parameters of the sol-gel synthesis like the temperature (500 and 550 ?C) and the duration of the calcination (1.5, 2, and 2.5 h). X-ray powder diffraction (XRPD) results have shown that all synthesized nanopowders are dominantly in anatase phase, with the presence of a small amount of rutile in samples calcined at 550 ?C. According to the results obtained by Williamson-Hall method, the anatase crystallite size was increased with the duration of the calcination (from 24 to 29 nm in samples calcined at lower, and from 30 to 35 nm in samples calcined at higher temperature). The analysis of the shift and linewidth of the most intensive anatase Eg Raman mode confirmed the XRPD results. The analysis of pore structure from nitrogen sorption experimental data described all samples as mesoporous, with mean pore diameters in the range of 5-8 nm. Nanopowder properties have been related to the photocatalytic activity, tested in degradation of the textile dye (C.I. Reactive Orange 16), carbofuran and phenol.

KINETIC STUDY ON HETEROGENEOUS PHOTOCATALYTIC DEGRADATION OF REACTIVE ORANGE 16 INTO A SLURRY REACTOR

2006 ◽  
Vol 5 (4) ◽  
pp. 649-659
Author(s):  
Anca Florentina Caliman ◽  
Apostolis Antoniadis ◽  
Ioannis Poulios ◽  
Matei Macoveanu
Keyword(s):  
Photocatalytic Degradation ◽  
Kinetic Study ◽  
Slurry Reactor ◽  
Reactive Orange 16 ◽  
Reactive Orange

Melia azedarach Activated Carbon and its novel TiO2 Nanocomposite for Chemisorption and Photodecoloration of Reactive Orange 16: Isotherm and Kinetic Modeling

2020 ◽  
Vol 17 (1) ◽  
pp. 107-119
Author(s):  
Jehanzeb A. Shah ◽  
Tayyab Ashfaq ◽  
Muhammad S. Khan ◽  
Nadia Riaz ◽  
Khizar H. Shah ◽  
...  
Keyword(s):  
Experimental Data ◽  
Activated Carbon ◽  
Batch Reactor ◽  
Dye Adsorption ◽  
Optimal Solution ◽  
Melia Azedarach ◽  
Textile Dye ◽  
Order Kinetic ◽  
Reactive Orange 16 ◽  
Reactive Orange

Background: Bulk generated textile wastewater loaded with dyes is posing a stern threat to aquatic health, especially when dumped without prior treatment. Lignocellulosic waste based activated carbon (AC) and Titania (TiO2) suspension can constitute the emerging technological solution. Objectives: Best lignocellulosic precursor biomass, Melia azedarach (Darek sawdust - DSD), was selected for ortho-phosphoric acid impregnated AC production and novel AC-DSD-TiO2 nanocomposite was developed. AC-DSD and AC-DSD-TiO2 nanocomposites were employed for reactive orange 16 (RO16) dye adsorption in batch and decoloration in photocatalytic reactors, respectively. Methods: Materials were characterized by Scanning electron microscope (SEM), energy dispersion X-ray (EDX) spectroscopy and Fourier transform infrared spectroscopy (FTIR). For AC-DSD production, the raw powdered biomass of DSD impregnated (value = 2) with H3PO4 at room temperature and after shaking, was placed in a muffle furnace at 100°C for 12 h in glass tubes and subsequently carbonized at a high temperature of 400°C for 30 min. Batch reactor parameters for the ACDSD- RO16 system were optimized as a function of contact time, adsorbent dose, temperature, initial dye concentration and pH. For AC-DSD-TiO2 nanocomposite synthesis, AC-DSD and TiO2 paste was dried in the furnace at 90°C and calcined at 300°C and stored in a desiccator. Results: AC-DSD exhibited RO16 adsorption capacity of 92.84 mg/g. The experimental data were best described by Langmuir and Dubinin-Radushkevich isotherms with high R2 of 0.9995 and 0.9895 and closeness of predicted adsorption capacities of 94.15 and 88.58 mg/g respectively. This determines the chemisorption nature for RO16 adsorption onto AC-DSD. The experimental data was well explained by the pseudo-second order kinetic model. Thermodynamic parameters also suggest the endothermic, chemisorption and spontaneous adsorption reaction. Photocatalytic studies of novel AC-DSD-TiO2 revealed the higher Kc = 0.1833 value over Kad= 0.0572. Conclusions: Melia azedarach AC-DSD and its novel AC-DSD-TiO2 nanocomposite prove that these materials could provide an optimal solution for treating textile dye solutions effectively as the good adsorbent and photocatalyst.

Preparation and optimization of CeO2 nanoparticles and its application in photocatalytic degradation of Reactive Orange 16 dye

2013 ◽  
Vol 249 ◽  
pp. 549-555 ◽  
Author(s):  
Hafez Balavi ◽  
Samaneh Samadanian-Isfahani ◽  
Mitra Mehrabani-Zeinabad ◽  
Mohammad Edrissi
Keyword(s):  
Photocatalytic Degradation ◽  
Ceo2 Nanoparticles ◽  
Reactive Orange 16 ◽  
Reactive Orange

Photocatalytic degradation of reactive orange 16 dye over Au-doped TiO2 in aqueous suspension

2011 ◽  
Vol 2 (1) ◽  
pp. 96 ◽  
Author(s):  
Ruey Chang Hsiao ◽  
L. Selva Roselin ◽  
Hsiu Ling Hsu ◽  
Rosilda Selvin ◽  
Ruey Shin Juang
Keyword(s):  
Photocatalytic Degradation ◽  
Aqueous Suspension ◽  
Reactive Orange 16 ◽  
Reactive Orange

scholarly journals Photocatalytic degradation of textile dye C.I. reactive orange 16 in TiO2 water suspension by simulated solar light

2007 ◽  
Vol 13 (4) ◽  
pp. 179-185 ◽  
Author(s):  
Dusan Mijin ◽  
Marina Radulovic ◽  
Dragana Zlatic ◽  
Petar Jovancic
Keyword(s):  
Catalyst Concentration ◽  
Solar Light ◽  
Textile Dye ◽  
High Adsorption ◽  
No Adsorption ◽  
Simulated Solar Light ◽  
Reactive Orange 16 ◽  
Photodegradation Efficiency ◽  
Reactive Orange ◽  
Ph Range

The photodegradation of C.I. Reactive Orange 16 (RO16), commonly used as a textile dye, was investigated using TiO2 as a catalyst and the sun lamp. The experiments showed that TiO2 and simulated solar light are necessary for the effective photodegradation, although a low degradation/adsorption was observed when only the simulated solar light or TiO2 was used. The effect of some parameters such as the initial concentration of the catalyst, the initial dye concentration, the initial Na2CO2 and NaCl concentrations, pH, and the presence of H2O2 on photodegradation of RO16 was examined. The photodegradation efficiency was highest at the catalyst concentration of 2.0 g/l. The degradation was faster in the acidic than in alkaline pH range. High adsorption of the dye was observed at low pH, while at high pH almost no adsorption was detected. A lower concentration of Na2CO2 decreased the photodegradation of RO16, while a higher concentration increased the photodegradation. The presence of NaCI led to the inhibition of the photodegradation process. The low concentration of H2P2 increased the RO16 photodegradation efficiency, while at higher concentration of H2O2 inhibition was observed.

scholarly journals Synthesis of anatase nanopowders by sol-gel method and influence of temperatures of calcination to their photocatalitic properties

2015 ◽  
Vol 47 (1) ◽  
pp. 41-49 ◽  
Author(s):  
A. Golubovic ◽  
B. Simovic ◽  
M. Scepanovic ◽  
D. Mijin ◽  
A. Matkovic ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Anatase Phase ◽  
Sol Gel ◽  
Tetrabutyl Titanate ◽  
Textile Dye ◽  
Reactive Orange 16 ◽  
Tio2 Nanopowders ◽  
Gel Technique ◽  
Reactive Orange ◽  
Brookite Phase

The titanium dioxide (TiO2) nanopowders were produced by sol-gel technique from tetrabutyl titanate as a precursor, varying the temperature ?f calcination (from 500 to 550?C with the step of 10 ?C). XRPD results have shown that all synthesized nanopowders are dominantly in anatase phase. The analysis of the shift and linewidth of the most intensive anatase Eg Raman mode confirmed the XRPD results and added the presence of small amount of highly disordered brookite phase in all samples. The analysis of pore structure from nitrogen sorption experimental data described all samples as mesoporous, with mean pore diameters in the range of 1.5 and 4.5 nm. Nanopowder properties have been related to the photocatalytic activity, tested in degradation of the textile dye (C.I. Reactive Orange 16). The sample calcined at temperature of 510?C showed the best photocatalytic performance.

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