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<strong>Removal of Orange II dye from aqueous solution by adsorption and photodegradation with visible light in presence of nitrogen doped titania nanocatalyst</strong>

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Title Statement <strong>Removal of Orange II dye from aqueous solution by adsorption and photodegradation with visible light in presence of nitrogen doped titania nanocatalyst</strong>
 
Added Entry - Uncontrolled Name Sen Gupta, Susmita ; B N College
 
Uncontrolled Index Term Adsorption; COD; Photo-catalytic decolourisation; Orange II; Nitrogen-doped Titania; Nanocatalyst
 
Summary, etc. The possibility of treating water spiked with an azo dye, Orange II by adsorption and photo-catalytic decolourisation with nitrogen doped TiO<sub>2</sub> has been investigated. The prepared material has been characterised by XRD, BET, TEM, DRS and XPS study. The photocatalytic reaction is carried out after the attainment of adsorption equilibrium between N-TiO<sub>2</sub> and dye. The batch process is chosen to adsorb the dye under different experimental conditions. The photocatalyst dose, initial dye concentration and solution <em>p</em>H have been found to influence both the processes. The percentage decoulorisation increases from 73.42% to 91.32% on increasing the N-TiO<sub>2</sub> dose 0.25 to 1.25 g L<sup>-1</sup>. However, further increase of the catalyst dose to 1.50 g L<sup>-1</sup> decreases the extent of decoulorisation (88.29 %). The lower dye concentration favour decolourisation (decreases from 84.24 to 75.43% for dye concentration of 18.0 to 36.0 µmol L<sup>-1</sup>). At <em>p</em>H 2.0, N-TiO<sub>2</sub> decolourises almost 84% of the dye within 240 min of irradiation time. COD results reveal ~91% mineralisation of the dye on 360 min of irradiation. The percentage decolourisation of the dye is found to be higher with N-TiO<sub>2</sub> compared to TiO<sub>2</sub> P25. The adsorption process follow the Lagergren first order model while the decolourisation process follow modified Langmuir-Hinshelwood model.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2016-05-18 13:02:37
 
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http://op.niscair.res.in/index.php/IJCT/article/view/4158
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 22, ##issue.no## 1-2 (2015): IJCT Vol.22(1-2) [January-March 2015]
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCT/article/download/4158/8557
http://op.niscair.res.in/index.php/IJCT/article/download/4158/8558
http://op.niscair.res.in/index.php/IJCT/article/download/4158/8559