Use of Cassia javahikai seed gum and gum-g-polyacrylamide as coagulant aid for the decolorization of textile dye solutions

CoPc(COOH)[Formula: see text]-TiO[Formula: see text] nanocomposites to be used as efficient visible light photocatalysts were obtained by modifying TiO2 nanoparticles with cobalt(II) tetracarboxyphthalocyanine (CoPc(COOH)[Formula: see text]). The photocatalyst was then characterized by ultra-violet diffuse reflectance spectroscopy (UV-DRS), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The UV-DRS spectra showed that the absorbance spectrum of the modified catalyst was shifted to the visible region. Different textile dye solutions of Reactive Red 180, Acid Red 88 and Direct Orange 46 were efficiently degraded under visible light. Color removal rates were established to be 30%, 53% and 47% after 180 min for RR180, AR88 and DO46 dyes, respectively. The optimum catalyst concentration was determined to be 1 g/L of CoPc(COOH)[Formula: see text]-TiO[Formula: see text]. Development of the CoPc(COOH)[Formula: see text]-TiO[Formula: see text] nanocomposite photocatalyst enabled the utilization of visible light irradiation for efficient photodegradation of organic textile dye solutions.

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Cassia angustifolia seed gum as an effective natural coagulant for decolourisation of dye solutions

Green Chemistry ◽

10.1039/b200067a ◽

2002 ◽

Vol 4 (3) ◽

pp. 252-254 ◽

Cited By ~ 59

Author(s):

Rashmi Sanghi ◽

Bani Bhatttacharya ◽

Vandana Singh

Keyword(s):

Natural Coagulant ◽

Cassia Angustifolia ◽

Seed Gum ◽

Dye Solutions

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The evaluation of electrical energy per order (EEo) for photooxidative decolorization of four textile dye solutions by the kinetic model

Chemosphere ◽

10.1016/j.chemosphere.2004.11.012 ◽

2005 ◽

Vol 59 (6) ◽

pp. 761-767 ◽

Cited By ~ 154

Author(s):

N. Daneshvar ◽

A. Aleboyeh ◽

A.R. Khataee

Keyword(s):

Kinetic Model ◽

Electrical Energy ◽

Textile Dye ◽

Electrical Energy Per Order ◽

Dye Solutions

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Adsorption-Coagulation for the Decolorisation of Textile Dye Solutions

Water Quality Research Journal ◽

10.2166/wqrj.2003.036 ◽

2003 ◽

Vol 38 (3) ◽

pp. 553-562 ◽

Cited By ~ 17

Author(s):

Rashmi Sanghi ◽

Bani Bhattacharya

Keyword(s):

Activated Carbon ◽

Dye Removal ◽

Bentonite Clay ◽

Textile Dye ◽

Eriochrome Black T ◽

Synthetic Dye ◽

Different Types ◽

Long Time ◽

Polyaluminium Chloride ◽

Dye Solutions

Abstract Studies were undertaken for the removal of colour from different types of synthetic dye solutions by using powdered activated carbon (PAC) and bentonite clay (BC) as adsorbents. The different types of dyes (direct, mordant and basic) studied were Direct Orange, Eriochrome Black T and Malachite Green. The synthetic dye solutions behaved differently with the two adsorbents. The effect of adsorption by PAC and the further addition of a very small dose of a coagulant polyaluminium chloride (PAlC) on the settling and/or reuse of adsorbents used was studied. PAC and BC, though effective adsorbents, remained suspended in the solution for a long time. PAlC not only enhanced dye removal, but also formed a sludge that settled very quickly and which could also be reused effectively for dye removal.

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Membrane Distillation: Experimental evaluation of Liquid Entry Pressure in commercial membranes with textile dye solutions

Journal of Water Process Engineering ◽

10.1016/j.jwpe.2021.102339 ◽

2021 ◽

Vol 44 ◽

pp. 102339

Author(s):

Regilene de Sousa Silva ◽

Heloisa Ramlow ◽

Bianca de Castro Santos ◽

Heloísa Bremm Madalosso ◽

Ricardo Antonio Francisco Machado ◽

...

Keyword(s):

Experimental Evaluation ◽

Membrane Distillation ◽

Textile Dye ◽

Entry Pressure ◽

Dye Solutions

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Decolorization Of Textile Dye Solutions

Ozone Science and Engineering ◽

10.1080/01919519308552483 ◽

1993 ◽

Vol 15 (3) ◽

pp. 189-200 ◽

Cited By ~ 37

Author(s):

Julie Carrière ◽

J. Peter Jones ◽

Arthur D. Broadbent

Keyword(s):

Textile Dye ◽

Dye Solutions

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Biomolecules encapsulated TiO 2 nano‐cubes using Tinospora cordifolia for photodegradation of a textile dye

Micro & Nano Letters ◽

10.1049/mnl.2019.0340 ◽

2019 ◽

Vol 14 (12) ◽

pp. 1229-1232 ◽

Cited By ~ 2

Author(s):

Harpreet Kaur ◽

Vikas Goyal ◽

Jagpreet Singh ◽

Sanjeev Kumar ◽

Mohit Rawat

Keyword(s):

Tinospora Cordifolia ◽

Textile Dye

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Photocatalytic Discolouration of Solutions of Reactive Dyes in the Presence of H2O2

Water Quality Research Journal ◽

10.2166/wqrj.1995.009 ◽

1995 ◽

Vol 30 (1) ◽

pp. 53-60 ◽

Cited By ~ 1

Author(s):

Deng Nansheng ◽

Tian Shizhong ◽

Xia Mei

Keyword(s):

Photochemical Reaction ◽

Uv Light ◽

Reactive Dyes ◽

Solar Light ◽

Rate Equations ◽

Oh Radical ◽

Test Results ◽

Dye Molecules ◽

First Order ◽

Dye Solutions

Abstract Tests for the photocatalytic degradation of solutions of three reactive dyes, Red M-5B, Procion Blue MX-R and Procion Black H-N, in the presence of H2O2 were carried out. When the solutions of the three reactive dyes were irradiated by UV or solar light, the colour of the solutions disappeared gradually. A statistical analysis of the test results indicated a linear relation between the concentration of dyes and the time of irradiation. The discolouration reaction of the solutions was of the first order. Rate equations for the discolouration reactions of dye solutions were developed. The dark reactions or the dye solutions containing H2O2 were very slow, illustrating that the photochemical reaction played a very important role. It was demonstrated that UV light and solar light (300 to 380 nm) photolyzes the HO and that the resulting OH radical reacts with the dye molecules and destroys the chromophore.

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