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Effects of Modifying Agents on the Dyeability of Cotton Fabric using Malachite Green Dye


Changes in thermodynamic parameters as a result of modifying agents on dye uptake of cotton fabric using malachite green (MG) dye was investigated in this study. Five modifying agents {Acetic acid (CH3COOH), hydrated Sodium carbonate (Na2CO3.10H2O), Sodium Chloride (NaCl), Ammonium sulphate ((NH4)2SO4) and Hydrogen peroxide (H2O2)} were used on cotton fabric. The equilibrium exhaustions (%E) were determined before and after modification of the cotton fabric at different concentrations which were 88.24%, 80%, 77.14%, 65.10% and 30.88% for CH3COOH, NaCl, (NH4)2SO4, Na2CO3.10H2O and H2O2 respectively. The results also showed a correlation between the standard affinity(-Δμθ) of dye on cotton fabric and the equilibrium exhaustion. The values of entropy (ΔSθ) and enthalpy (ΔHθ) change revealed the feasibility (spontaneity) and exothermic nature of the reaction. The optimum parameters were attained in acidic solution (CH3COOH) at the highest temperature (70 °C) of dyeing as it showed the highest % efficiency of 88.24%. This work established that modification of cotton fabric with modifying agents is one of the best route to improve the affinity between dye and fabric as it reduces stress, amount of dyes wasted in dyeing, time required to achieve satisfactory results leading to a cost effective environmental friendly approach in the field of cotton dyeing.

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Degradation of Synthetic Dyes by Laccases – A Mini-Review

. Inorg. Chem., 11, 2006, 514-526. FABBRINI, M., GALLI, C., GENTILI, P.: Comparing the catalytic efficiency of some mediators of laccase. J. Mol. Cat. B Enz., 16, 2002, 231-240. FISCHER, A.R., WERNER, P., GOSS, K.U.: Photodegradation of malachite green and malachite green carbinol under irradiation with different wavelength ranges. Chemosphere, 2011, 82, 210-214. FORGACS, E., CSERHÁTI, T., OROS, G.: Removal of synthetic dyes from wastewaters: a review. Environ. Int., 30, 2004, 953-971. FOROOTANFAR, H

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Effect Of Metal Ions On Triphenylmethane Dye Decolorization By Laccase From Trametes Versicolor

decolorization of malachite green at high temperatures and ionic concentrations. Int. Biodeterior. Biodegradation, 87, 2014, 109-115. ZHANG, C., ZHANG, S., DIAO, H., ZHAO, H., ZHU, H., LU, F., LU, Z.: Purification and characterization of a temperature and pH stable laccase from the spores of Bacillus vallismortis fmb-103 and its application in the degradation of malachite green, J. Agric. Food Chem., 61, 2013, 5468-5473. ZHAO, D., ZHANG, X., CUI, D., ZHAO, M.: Characterisation of a novel white laccase from the deuteromycete fungus Myrothecium verrucaria NF-05

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Direct yellow degradation by combined Fenton-enzymatic process

Malachite green by Kocuria rosea MTCC 1532. Acta Chem. Eng. 53: 492-498. Robinson T, McMullan G, Marchant R, Nigam P (2001) Remediation of dyes in textile effluent: a critical review on current treatment technologies with a proposed alternative. Bioresour. Technol. 77: 247-255. Schmitt S, De Souza R, Bettin F, Pinheiro Dillon AJ, Borges Valle JA, Andreaus J (2012) Decolourization of aqueous solutions of disperse textile dyes by oxidoreductases. Biocatal. Biotransfor. 30: 48-56. Silverstein RM, Bassler GC, Morrill TC (1991

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Using of wooden sawdust for copper removal from waters

, Greece, September 5-7, p. 1-6. Imamoglu M, Tekir O (2008) Removal of copper (II) and lead (II) ions from aqueous solutions by adsorption on activated carbon from a new precursor hazelnut husks. Desalination 228: 108-113. Kidalova, L, Stevulova, N, Terpakova, E (2015) Influence of water absorption on the selected properties of hemp hurds composites. Pollack Periodica 10: 123-132. Leng L, Yuan X, Zeng G, Shao J, Chen X, Wu Z, Peng X (2015) Surface characterization of rice husk bio-char produced by liquefaction and application for cationic dye (Malachite

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