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DECOLORIZATION OF NIGROSINE WS (ACID BLACK 2) DYE
BY
SOLAR PHOTO-FENTON PROCESS
Presented by:
Akash Tikhe
akashtk92@gmail.com
INTRODUCTION
 Various estimates and projections indicate an increasing trend in water demand for
agricultural, industrial and domestic use in the coming decades.
 More than 10,000 types of dyes are used in the textile industry and 2,80,000 tones
of textile dyes are discharged every year worldwide (Hsueh et al., 2005).
 Discharge of such wastewater decreases aesthetic and ecological value of
receiving water body due to addition of intensive color and toxicity.
 The conventional treatment methods are ineffective for all class of dyes due to
their complex aromatic structures and stability.
2
INTRODUCTION
 In the recent time the Advanced Oxidation Processes (AOPs), are considered to
be a potential treatment method for the removal of color.
 This method is based on generation of °OH radical (oxidation potential 2.8 V)
which is responsible for degradation of any organic group and decolorization of
any class of dye.
 Extremely fast reaction within seconds to minutes.
 Reactions take place at ambient environment.
 Absence of generation of byproducts or secondary pollutants.
3
AIM AND OBJECTIVES
AIM
 To find out the efficiency of Homogeneous Solar Photo-Fenton Process for the
Nigrosine WS (Acid Black 2) dye.
OBJECTIVES
 To decolorize the Nigrosine WS (Acid Black 2) dye by using Homogeneous Solar
Photo-Fenton Process.
 To evaluate the optimum condition of Homogeneous Solar Photo-Fenton Process for
decolorization of Nigrosine WS (Acid Black 2) dye.
4
METHODOLOGY
5
Selection of DyeApplication
Literature
Review
Optimization
of used
Chemicals &
Environment
Pilot Study
Literature
Review
Treatment of Dye by Optimized Environment and
Chemical Doses
Selection of
Treatment Method
DETERMINATION OF COLOR REMOVAL
 Spectro-photomertric method – Maximum absorbance wavelength
 The absorbance was measured at each half an hour
 The sample was centrifuged before measuring absorbance
OPTIMIZATION OF DOSE
6
DECOLORIZATION OF NIGROSINE WS DYE BY OPTIMIZED
DOSE
o For the decolorization of dye, the optimum dose of FeSO4.7H2O and H2O2 (30% w/v) was
applied per 200 ml of dye solution at fixed pH 3.
o There are six different concentration of Nigrosine Ws dye was used from 5 – 100 ppm.
7
Experimental Setup
Stirring - 2000 rpm
200 ml Dye solution
pH = 3
OBSERVATIONS AND RESULTS
8
Water Before Treatment Water After Treatment
After 2 hours
Complete Color Removal
OBSERVATIONS AND RESULTS
A single peak was observed at 570 nm which was used as the maximum absorbance
wavelength and at which decolorization of Nigrosine WS dye was determined.
9
OBSERVATIONS AND RESULTS
Effect of Concentration of H2O2 (30% w/v)
10
Effect of Concentration of FeSO4.7H2O
OBSERVATIONS AND RESULTS
Effect of pH on Decolorization Rate
11Effect of Initial Dye Concentration
EFFECT OF SOLAR IRRADIATION
 The results revealed that sunlight has an influence on the homogenous Photo-Fenton
process. In the absence of direct sunlight, decolorization cannot be achieved more
than 70% after the time duration of 4 hours.
12
EFFECT OF STIRRING
The complete decolorization can be
achieved in two and half hour by providing
10% of stirring to the dye solution.
In the absence of stirring, 99 % of
decolorization can be achieved within 3
hours of time duration. Absence of
stirring also gives rise to the Fe+2
sludge
formation.
13
 This method gives complete decolorization of Nigrosine WS dye so the treated
effluent can be reused or recycle in various sectors.
 This treatment method do not require any skill operation and costly investment.
 The treatment in the absence of stirring of course decreases operation cost but it give
rise to generation of iron sludge at the bottom which is unconsumed after the
reaction. So sludge disposal and handling may require in absence of stirring.
 The treatment method require continues and large exposure of sun light so the
efficiency may deplete in monsoon season when sun light is intermittent.
14
DISCUSSION
CONCLUSION
o The investigation proved that only H2O2is not enough to decolorize Nigrosine WS
(C.I. Acid Black 2) dye but catalyst must require for fast reaction and complete
decolorization.
o The Homogenous Photo-Fenton method is effective method for complete removal of
Nigrosine WS (C.I. Acid Black 2) dye.
o The treatment method provide major advantage of less investment and operating
cost and do not require skill operation.
o This treatment method is efficient and cost effective solution for tropical region
where sun light is abundant.
15
REFERENCES
A.Tripathi, S.K. Srivastava (2011) Ecofriendly Treatment of Azo Dyes: Biodecolorization using Bacterial
Strains, International Journal of Bioscience, Biochemistry and Bioinformatics, Vol. 1, No. 1.
Badawy M. I., Ghaly M. Y. and Gad-Allah T. A. (2006) Advanced oxidation processes for the removal of
organophosphorus pesticides from wastewater, Desalination, vol. 194: 166–175.
Carla C. A. Loures and Marco A. K. Alcântara (2013) Advanced Oxidative Degradation Processes:
Fundamentals and Applications, International Review of Chemical Engineering (I.RE.CH.E.), Vol. 5, N. 2.
Kumar, M. Paliwal, R. Ameta and S.C. Ameta (2008) Oxidation of Fast Green FCF by the Solar Photo-Fenton
Process, J. Iran. Chem. Soc., Vol. 5, No. 2, June 2008, pp. 346-351.
Kang S.F., Liao C.H. and Po S.T. (2000) Decolorization of textile wastewater by photo-Fenton oxidation
technology, Chemosphere vol. 41: 1287-1297.
Khandelwal D.H and Ameta R. (2013) Use of Photo-Fenton Reagent in the Degradation of Basic Yellow 2 in
Aqueous Medium, Res. J. Recent Sci. Vol. 2(1), 39-43.
Rajendran and C. Karthikeyan (2011) Effective degradation of an azo dye acid red -183 by Fenton and
Photo-Fenton treatment, Acta Chim. Pharm. Indica: 1(1), 57-64.
Rein MUNTER (2001) Advanced oxidation processes – current status and prospects, Proc. Estonian
Acad. Sci. Chem., 2001, 50, 2, 59–80.
16
17

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Decolourisation of Nigrosine WS dye by Solar Photo-fenton

  • 1. DECOLORIZATION OF NIGROSINE WS (ACID BLACK 2) DYE BY SOLAR PHOTO-FENTON PROCESS Presented by: Akash Tikhe akashtk92@gmail.com
  • 2. INTRODUCTION  Various estimates and projections indicate an increasing trend in water demand for agricultural, industrial and domestic use in the coming decades.  More than 10,000 types of dyes are used in the textile industry and 2,80,000 tones of textile dyes are discharged every year worldwide (Hsueh et al., 2005).  Discharge of such wastewater decreases aesthetic and ecological value of receiving water body due to addition of intensive color and toxicity.  The conventional treatment methods are ineffective for all class of dyes due to their complex aromatic structures and stability. 2
  • 3. INTRODUCTION  In the recent time the Advanced Oxidation Processes (AOPs), are considered to be a potential treatment method for the removal of color.  This method is based on generation of °OH radical (oxidation potential 2.8 V) which is responsible for degradation of any organic group and decolorization of any class of dye.  Extremely fast reaction within seconds to minutes.  Reactions take place at ambient environment.  Absence of generation of byproducts or secondary pollutants. 3
  • 4. AIM AND OBJECTIVES AIM  To find out the efficiency of Homogeneous Solar Photo-Fenton Process for the Nigrosine WS (Acid Black 2) dye. OBJECTIVES  To decolorize the Nigrosine WS (Acid Black 2) dye by using Homogeneous Solar Photo-Fenton Process.  To evaluate the optimum condition of Homogeneous Solar Photo-Fenton Process for decolorization of Nigrosine WS (Acid Black 2) dye. 4
  • 5. METHODOLOGY 5 Selection of DyeApplication Literature Review Optimization of used Chemicals & Environment Pilot Study Literature Review Treatment of Dye by Optimized Environment and Chemical Doses Selection of Treatment Method
  • 6. DETERMINATION OF COLOR REMOVAL  Spectro-photomertric method – Maximum absorbance wavelength  The absorbance was measured at each half an hour  The sample was centrifuged before measuring absorbance OPTIMIZATION OF DOSE 6
  • 7. DECOLORIZATION OF NIGROSINE WS DYE BY OPTIMIZED DOSE o For the decolorization of dye, the optimum dose of FeSO4.7H2O and H2O2 (30% w/v) was applied per 200 ml of dye solution at fixed pH 3. o There are six different concentration of Nigrosine Ws dye was used from 5 – 100 ppm. 7 Experimental Setup Stirring - 2000 rpm 200 ml Dye solution pH = 3
  • 8. OBSERVATIONS AND RESULTS 8 Water Before Treatment Water After Treatment After 2 hours Complete Color Removal
  • 9. OBSERVATIONS AND RESULTS A single peak was observed at 570 nm which was used as the maximum absorbance wavelength and at which decolorization of Nigrosine WS dye was determined. 9
  • 10. OBSERVATIONS AND RESULTS Effect of Concentration of H2O2 (30% w/v) 10 Effect of Concentration of FeSO4.7H2O
  • 11. OBSERVATIONS AND RESULTS Effect of pH on Decolorization Rate 11Effect of Initial Dye Concentration
  • 12. EFFECT OF SOLAR IRRADIATION  The results revealed that sunlight has an influence on the homogenous Photo-Fenton process. In the absence of direct sunlight, decolorization cannot be achieved more than 70% after the time duration of 4 hours. 12
  • 13. EFFECT OF STIRRING The complete decolorization can be achieved in two and half hour by providing 10% of stirring to the dye solution. In the absence of stirring, 99 % of decolorization can be achieved within 3 hours of time duration. Absence of stirring also gives rise to the Fe+2 sludge formation. 13
  • 14.  This method gives complete decolorization of Nigrosine WS dye so the treated effluent can be reused or recycle in various sectors.  This treatment method do not require any skill operation and costly investment.  The treatment in the absence of stirring of course decreases operation cost but it give rise to generation of iron sludge at the bottom which is unconsumed after the reaction. So sludge disposal and handling may require in absence of stirring.  The treatment method require continues and large exposure of sun light so the efficiency may deplete in monsoon season when sun light is intermittent. 14 DISCUSSION
  • 15. CONCLUSION o The investigation proved that only H2O2is not enough to decolorize Nigrosine WS (C.I. Acid Black 2) dye but catalyst must require for fast reaction and complete decolorization. o The Homogenous Photo-Fenton method is effective method for complete removal of Nigrosine WS (C.I. Acid Black 2) dye. o The treatment method provide major advantage of less investment and operating cost and do not require skill operation. o This treatment method is efficient and cost effective solution for tropical region where sun light is abundant. 15
  • 16. REFERENCES A.Tripathi, S.K. Srivastava (2011) Ecofriendly Treatment of Azo Dyes: Biodecolorization using Bacterial Strains, International Journal of Bioscience, Biochemistry and Bioinformatics, Vol. 1, No. 1. Badawy M. I., Ghaly M. Y. and Gad-Allah T. A. (2006) Advanced oxidation processes for the removal of organophosphorus pesticides from wastewater, Desalination, vol. 194: 166–175. Carla C. A. Loures and Marco A. K. Alcântara (2013) Advanced Oxidative Degradation Processes: Fundamentals and Applications, International Review of Chemical Engineering (I.RE.CH.E.), Vol. 5, N. 2. Kumar, M. Paliwal, R. Ameta and S.C. Ameta (2008) Oxidation of Fast Green FCF by the Solar Photo-Fenton Process, J. Iran. Chem. Soc., Vol. 5, No. 2, June 2008, pp. 346-351. Kang S.F., Liao C.H. and Po S.T. (2000) Decolorization of textile wastewater by photo-Fenton oxidation technology, Chemosphere vol. 41: 1287-1297. Khandelwal D.H and Ameta R. (2013) Use of Photo-Fenton Reagent in the Degradation of Basic Yellow 2 in Aqueous Medium, Res. J. Recent Sci. Vol. 2(1), 39-43. Rajendran and C. Karthikeyan (2011) Effective degradation of an azo dye acid red -183 by Fenton and Photo-Fenton treatment, Acta Chim. Pharm. Indica: 1(1), 57-64. Rein MUNTER (2001) Advanced oxidation processes – current status and prospects, Proc. Estonian Acad. Sci. Chem., 2001, 50, 2, 59–80. 16
  • 17. 17