Removal of Basic Violet from Wool Dyeing Effluent Using Nanoparticles

The principle and methodology of effluent treatment by iron-carbon micro electrolysis were introduced in the paper. Then design of the orthogonal experiments for dyeing effluent treatment was formulated. Discussion of influences of related factors on effluent treatment followed. Results were got after the detailed analysis. Therefore, we deduced the mechanism that the cations of Transition Metal (TM) and rare earth (RE) assist of zero-valent irons catalyzing degradation of dyeing effluent. The mechanism is formed based on the following explanation. Cations of manganese and cobalt easily penetrate Fe0lattices, while Ce4+cations do it difficultly because of their larger radius. Thus Ce4+is weaker than both of Mn2+and Co2+for helping zero-valent irons to improve their activity. Furthermore, because the valence electron structure of Mn2+is more stable than that of Co2+, Mn2+is better for assisting zero-valent iron catalysis of degradation of dyeing effluent than Co2+. Therefore, ranking of influence for zero-valent iron catalysis activity from greatest to smallest is Mn2+, Co2+and Ce4+.

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Reuse of the water and salt of reactive dyeing effluent after electrochemical decolorisation

Coloration Technology ◽

10.1111/j.1478-4408.2011.00343.x ◽

2011 ◽

Vol 128 (1) ◽

pp. 36-43 ◽

Cited By ~ 9

Author(s):

Víctor López-Grimau ◽

María del Carmen Gutiérrez-Bouzán ◽

José Valldeperas ◽

Martí Crespi

Keyword(s):

Reactive Dyeing ◽

Dyeing Effluent

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Custom-tailoring loose nanocomposite membrane incorporated bipiperidine/graphene quantum dots for high-efficient dye/salt fractionation in hairwork dyeing effluent

Separation and Purification Technology ◽

10.1016/j.seppur.2021.118870 ◽

2021 ◽

pp. 118870

Author(s):

Yuefei Song ◽

Yueke Sun ◽

Nan Zhang ◽

Chen Li ◽

Mengxiang Hou ◽

...

Keyword(s):

Quantum Dots ◽

Graphene Quantum Dots ◽

Nanocomposite Membrane ◽

High Efficient ◽

Dyeing Effluent ◽

Salt Fractionation

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Renovation and Reuse of Reactive Dyeing Effluent by a Novel Heterogeneous Fenton System Based on Metal Modified PTFE Fibrous Catalyst/H2O2

International Journal of Photoenergy ◽

10.1155/2013/169493 ◽

2013 ◽

Vol 2013 ◽

pp. 1-10 ◽

Cited By ~ 5

Author(s):

Bing Li ◽

Yongchun Dong ◽

Zhizhong Ding ◽

Yiming Xu ◽

Chi Zou

Keyword(s):

Reactive Dyes ◽

Cotton Fabrics ◽

Molar Ratio ◽

The Novel ◽

Heterogeneous Fenton ◽

Reactive Dyeing ◽

Toc Removal ◽

Dyeing Effluent ◽

Fenton System

Cu-Fe bimetallic grafted polytetrafluoroethylene (PTFE) fiber complexes were prepared and optimized as the novel heterogeneous Fenton catalysts for the degradation of reactive dyes under UV irradiation. Cotton fabrics were dyed with three reactive dyes, namely, Reactive Red 195, Reactive Yellow 145, and Reactive Blue 222, in tap fresh water using exhaustion process. The spent dyeing effluents were then collected and degraded with the optimized Cu-Fe bimetallic grafted PTFE fiber complex/H2O2system. The treated dyeing effluents were characterized and reused for the dyeing of cotton fabrics through the same process. The effect of reuse process number on quality of the dyed cotton fabrics was examined. The results indicated that the Cu-Fe bimetallic modified PTFE fiber complex with a Cu/Fe molar ratio of 2.87 was found to be the most effective fibrous catalyst, which enhanced complete decolorization of the treated dyeing effluents with H2O2in 4 h. However, the TOC removal for the treated dyeing effluents was below 80%. The dyeing quality was not affected for three successive cycles. The increase in residual TOC value influences fourth dyeing cycle. Further TOC reduction of the treated effluents is needed for its repeated reuse in more than three dyeing cycles.

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