Photodegradation of Reactive Black-5 Dye (Rb-5) in Wastewater using Annular Photoreactor

A. Mlungisi, Maurice S. Onyango, Aoyi Ochieng

Research output: Contribution to conferencePaper

Abstract

Dyes are some of the biggest contributors to water pollution since approximately 15% of the produced dyes are lost in the wastewater. Reactive dyes make up to 30% of the dye market and their toxicity was reported at 5.2 mg/L. They have serious implications to the environment as well as human health. The investigation aims to evaluate the performance of polyaniline coated TiO2 as compared to uncoated TiO2 in removing reactive dyes from
wastewater. The TiO2 nanoparticles and aniline were stirred for 4
hours at a ratio of 5:1 (m/v) and the resultant suspension was
washed, filtered and dried. Various parameters such as pH, catalyst
loading, and dye concentration were studied for their effects on the
performance of the nanocomposites in sorption equilibrium and photocatalysis experiments. The results indicated that polyaniline coated titanium dioxide (PANI-TiO2) had better performance of 99.89% as compared to the 74.51% for the uncoated TiO2 at an optimum pH 3. An increase in mass (10-100 mg) will cause the colour removal to increase from 25.61% to 99.66%, while for the uncoated TiO2 the colour removal increase from 15.59 % to 93.56%. It is concluded that the PANI-TiO2 performed better than the uncoated TiO2 in colour removal of reactive black dye. It is
recommended that further experiments be performed using a
different reactive dye and different polymer composite.
Original languageEnglish
Pages186-191
Number of pages6
Publication statusPublished - 2014
Event2014 International Conference on Integrated Waste Management & Environmental Engineering - Johannesburg, South Africa
Duration: Apr 15 2014Apr 16 2014

Conference

Conference2014 International Conference on Integrated Waste Management & Environmental Engineering
Abbreviated titleICCIWEE 2014
CountrySouth Africa
CityJohannesburg
Period4/15/144/16/14

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photodegradation
dye
wastewater
water pollution
sorption
polymer
experiment
toxicity
market
removal

Cite this

Mlungisi, A., Onyango, M. S., & Ochieng, A. (2014). Photodegradation of Reactive Black-5 Dye (Rb-5) in Wastewater using Annular Photoreactor. 186-191. Paper presented at 2014 International Conference on Integrated Waste Management & Environmental Engineering, Johannesburg, South Africa.
Mlungisi, A. ; Onyango, Maurice S. ; Ochieng, Aoyi. / Photodegradation of Reactive Black-5 Dye (Rb-5) in Wastewater using Annular Photoreactor. Paper presented at 2014 International Conference on Integrated Waste Management & Environmental Engineering, Johannesburg, South Africa.6 p.
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title = "Photodegradation of Reactive Black-5 Dye (Rb-5) in Wastewater using Annular Photoreactor",
abstract = "Dyes are some of the biggest contributors to water pollution since approximately 15{\%} of the produced dyes are lost in the wastewater. Reactive dyes make up to 30{\%} of the dye market and their toxicity was reported at 5.2 mg/L. They have serious implications to the environment as well as human health. The investigation aims to evaluate the performance of polyaniline coated TiO2 as compared to uncoated TiO2 in removing reactive dyes fromwastewater. The TiO2 nanoparticles and aniline were stirred for 4hours at a ratio of 5:1 (m/v) and the resultant suspension waswashed, filtered and dried. Various parameters such as pH, catalystloading, and dye concentration were studied for their effects on theperformance of the nanocomposites in sorption equilibrium and photocatalysis experiments. The results indicated that polyaniline coated titanium dioxide (PANI-TiO2) had better performance of 99.89{\%} as compared to the 74.51{\%} for the uncoated TiO2 at an optimum pH 3. An increase in mass (10-100 mg) will cause the colour removal to increase from 25.61{\%} to 99.66{\%}, while for the uncoated TiO2 the colour removal increase from 15.59 {\%} to 93.56{\%}. It is concluded that the PANI-TiO2 performed better than the uncoated TiO2 in colour removal of reactive black dye. It isrecommended that further experiments be performed using adifferent reactive dye and different polymer composite.",
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Mlungisi, A, Onyango, MS & Ochieng, A 2014, 'Photodegradation of Reactive Black-5 Dye (Rb-5) in Wastewater using Annular Photoreactor' Paper presented at 2014 International Conference on Integrated Waste Management & Environmental Engineering, Johannesburg, South Africa, 4/15/14 - 4/16/14, pp. 186-191.

Photodegradation of Reactive Black-5 Dye (Rb-5) in Wastewater using Annular Photoreactor. / Mlungisi, A.; Onyango, Maurice S.; Ochieng, Aoyi.

2014. 186-191 Paper presented at 2014 International Conference on Integrated Waste Management & Environmental Engineering, Johannesburg, South Africa.

Research output: Contribution to conferencePaper

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T1 - Photodegradation of Reactive Black-5 Dye (Rb-5) in Wastewater using Annular Photoreactor

AU - Mlungisi, A.

AU - Onyango, Maurice S.

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N2 - Dyes are some of the biggest contributors to water pollution since approximately 15% of the produced dyes are lost in the wastewater. Reactive dyes make up to 30% of the dye market and their toxicity was reported at 5.2 mg/L. They have serious implications to the environment as well as human health. The investigation aims to evaluate the performance of polyaniline coated TiO2 as compared to uncoated TiO2 in removing reactive dyes fromwastewater. The TiO2 nanoparticles and aniline were stirred for 4hours at a ratio of 5:1 (m/v) and the resultant suspension waswashed, filtered and dried. Various parameters such as pH, catalystloading, and dye concentration were studied for their effects on theperformance of the nanocomposites in sorption equilibrium and photocatalysis experiments. The results indicated that polyaniline coated titanium dioxide (PANI-TiO2) had better performance of 99.89% as compared to the 74.51% for the uncoated TiO2 at an optimum pH 3. An increase in mass (10-100 mg) will cause the colour removal to increase from 25.61% to 99.66%, while for the uncoated TiO2 the colour removal increase from 15.59 % to 93.56%. It is concluded that the PANI-TiO2 performed better than the uncoated TiO2 in colour removal of reactive black dye. It isrecommended that further experiments be performed using adifferent reactive dye and different polymer composite.

AB - Dyes are some of the biggest contributors to water pollution since approximately 15% of the produced dyes are lost in the wastewater. Reactive dyes make up to 30% of the dye market and their toxicity was reported at 5.2 mg/L. They have serious implications to the environment as well as human health. The investigation aims to evaluate the performance of polyaniline coated TiO2 as compared to uncoated TiO2 in removing reactive dyes fromwastewater. The TiO2 nanoparticles and aniline were stirred for 4hours at a ratio of 5:1 (m/v) and the resultant suspension waswashed, filtered and dried. Various parameters such as pH, catalystloading, and dye concentration were studied for their effects on theperformance of the nanocomposites in sorption equilibrium and photocatalysis experiments. The results indicated that polyaniline coated titanium dioxide (PANI-TiO2) had better performance of 99.89% as compared to the 74.51% for the uncoated TiO2 at an optimum pH 3. An increase in mass (10-100 mg) will cause the colour removal to increase from 25.61% to 99.66%, while for the uncoated TiO2 the colour removal increase from 15.59 % to 93.56%. It is concluded that the PANI-TiO2 performed better than the uncoated TiO2 in colour removal of reactive black dye. It isrecommended that further experiments be performed using adifferent reactive dye and different polymer composite.

M3 - Paper

SP - 186

EP - 191

ER -

Mlungisi A, Onyango MS, Ochieng A. Photodegradation of Reactive Black-5 Dye (Rb-5) in Wastewater using Annular Photoreactor. 2014. Paper presented at 2014 International Conference on Integrated Waste Management & Environmental Engineering, Johannesburg, South Africa.