scholarly journals Treatment of textile effluent containing indigo blue dye by a UASB reactor coupled with pottery clay adsorption

2013 ◽  
Vol 35 (1) ◽  
Author(s):  
Vinicius Conceição ◽  
Flavio Bentes Freire ◽  
Karina Querne de Carvalho
Keyword(s):  
Textile Effluent ◽  
Uasb Reactor ◽  
Blue Dye ◽  
Indigo Blue

scholarly journals Evaluation and Predictive Modeling of Removal Condition for Bioadsorption of Indigo Blue Dye by Spirulina platensis

2020 ◽  
Vol 8 (1) ◽  
pp. 82 ◽  
Author(s):  
Robledo-Padilla ◽  
Aquines ◽  
Silva-Núñez ◽  
Alemán-Nava ◽  
Castillo-Zacarías ◽  
...  
Keyword(s):  
Spirulina Platensis ◽  
Biomass Concentration ◽  
Blue Dye ◽  
Removal Capacity ◽  
Treatment Conditions ◽  
Linear Behavior ◽  
Indigo Blue ◽  
Experimental Values ◽  
Physical Treatments ◽  
Similar Accuracy

Among the different chemical and physical treatments used to remove the color of the textile effluents, bioremediation offers many benefits to the environment. In this study, we determined the potential of Spirulina platensis (S. platensis) for decolorizing indigo blue dye under different incubation conditions. The microalgae were incubated at different pH (from 4 to 10) to calibrate for the optimal discoloration condition; a pH of 4 was found to be optimal. The biomass concentration in all experiments was 1 g/L, which was able to decolorize the indigo blue dye by day 3. These results showed that S. platensis is capable of removing indigo blue dye at low biomass. However, this was dependent on the treatment conditions, where temperature played the most crucial role. Two theoretical adsorption models, namely (1) a first-order model equation and (2) a second-order rate equation, were compared with observed adsorption vs. time curves for different initial concentrations (from 25 to 100 mg/L). The comparison between models showed similar accuracy and agreement with the experimental values. The observed adsorption isotherms for three temperatures (30, 40, and 50 °C) were plotted, showing fairly linear behavior in the measured range. The adsorption equilibrium isotherms were estimated, providing an initial description of the dye removal capacity of S. platensis.

Evaluation of operational parameters from a microfiltration system for indigo blue dye recovery from textile dye effluent

2013 ◽  
Vol 52 (1-3) ◽  
pp. 257-266 ◽  
Author(s):  
Míriam Cristina Santos Amaral ◽  
Luzia Sergina França Neta ◽  
Mariana Souza ◽  
Naiara Cerqueira ◽  
Roberto Bentes de Carvalho
Keyword(s):  
Blue Dye ◽  
Textile Dye ◽  
Operational Parameters ◽  
Textile Dye Effluent ◽  
Indigo Blue

scholarly journals Electrocoagulation Applied for Textile Dye Oxidation Using Iron Slag as Electrodes

2021 ◽  
Author(s):  
Rafaela De Maman ◽  
Vilson Conrado da Luz ◽  
Laura Behling ◽  
Adriana Dervanoski ◽  
Clarissa Dalla Rosa ◽  
...  
Keyword(s):  
Textile Industry ◽  
Oxygen Demand ◽  
Electrochemical Process ◽  
Blue Dye ◽  
Textile Dye ◽  
Phenol Removal ◽  
Good Efficiency ◽  
Iron Slag ◽  
Indigo Blue ◽  
Textile Factory

Abstract The Indigo Blue dye is widely used in the textile industry, specifically in jeans dyeing, the effluents of which, rich in organic pollutants with recalcitrant characteristics, end up causing several environmental impacts, requiring efficient treatments. Several pieces of research have been conducted in search of effective treatment methods, among which is electrocoagulation. This treatment consists of an electrochemical process that generates its own coagulant by applying electric current on metallic electrodes, bypassing the use of other chemical products. The objective of this work was to evaluate the potential use of iron slag in the electrocoagulation of a synthetic effluent containing commercial dye Indigo Blue and the effluent from a textile factory. The quantified parameters were color, turbidity, pH, electrical conductivity, sludge generation, phenol removal, chemical oxygen demand (COD), and total organic carbon (TOC). The electrocoagulation treatment presented a good efficiency in removing the analyzed parameters, obtaining average removal in the synthetic effluent of 85 % of color and 100 % of phenol after 25 min of electrolysis. For the effluent from the textile factory, average reductions of 80 % of color, 91 % of turbidity, 100 % of phenol, 55 % of COD, and 73 % of TOC were measured after 60 min of electrolysis. The results obtained demonstrate the potential of using iron slag as an electrode in the electrocoagulation process in order to reuse industrial waste and reduce costs in the treatment and disposal of solid waste.

scholarly journals Comparative investigation of indigo blue dye removal efficiency of activated carbon and natural clay in adsorption/ultrafiltration system

2019 ◽  
Vol 164 ◽  
pp. 326-338
Author(s):  
M. Missaoui ◽  
N. Tahri ◽  
M.O. Daramola ◽  
J. Duplay ◽  
G. Schäfer ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Removal Efficiency ◽  
Dye Removal ◽  
Comparative Investigation ◽  
Blue Dye ◽  
Natural Clay ◽  
Indigo Blue

scholarly journals Adsorption Isotherms studies of the removal of Indigo Blue dye from aqueous solution using chemically modified coconut shell

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Olaniyi K Yusuff ◽  
Adenike M. O Abdulraheem ◽  
Omowumi D. Agboola
Keyword(s):  
Aqueous Solution ◽  
Adsorption Process ◽  
Dye Adsorption ◽  
Coconut Shell ◽  
Isotherm Models ◽  
Blue Dye ◽  
Chemically Modified ◽  
Equilibrium Data ◽  
Indigo Blue ◽  
Adsorption Equilibrium Data

Introduction: The conversion and utilization of agricultural wastes in environmentally friendly processes have transformed these materials into useful rather than waste materials. Aim: This study investigates the adsorption of indigo blue dye from aqueous solution onto coconut shell, a low cost agricultural waste material in a batch process. Materials and Methods: Pulverized coconut shell was chemically modified and characterized using the Fourier Transform Infra Red spectroscopy and Scanning Electron Microscopy. Adsorption process using the chemically modified coconut shell was studied as a function of pH, initial dye concentration, adsorbent dose, and contact time. The adsorption equilibrium data were analyzed with Langmuir, Freundlich and Temkin isotherm models. Results: The results revealed that percentage of the indigo dye adsorbed from aqueous solution varied linearly with the adsorbent dose, concentration and time with maximum percentage dye adsorption of 88.4% at 70 mg dosage, 95.8% at 0.05 mg/L concentration and 90% at 1 hr contact time but varies non-linearly with pH with maximum percentage dye adsorption of 92.9% attained at pH of 5. The adsorption equilibrium data were analyzed with Langmuir, Freundlich and Temkin isotherm models with the Langmuir isotherm having the best fit to the adsorption process with R2 value of 0.998. The experimental data were best described by the pseudo-second order kinetics model. FTIR analyses reveal that the adsorption process was through a chemical interaction of the dye with some functional groups at the surface of the adsorbent Conclusion: The chemically modified coconut shell is an effective adsorbent for the removal of indigo dye from aqueous solution is by chemisorption process with the adsorbent surface energetically homogeneous (n < 1). Keywords: Adsorption, Indigo blue dye, Coconut Shell, Kinetics, Aqueous solution.

Removal of synthetic and industrial effluent color by photocatalytic process

2018 ◽  
Vol 2017 (3) ◽  
pp. 878-886 ◽  
Author(s):  
Bruna de Paula Soares ◽  
Leticia Rosa Climaco ◽  
Lariana Negrão Beraldo de Almeida ◽  
Giane Gonçalves Lenzi
Keyword(s):  
Methylene Blue ◽  
Batch Reactor ◽  
Anatase Phase ◽  
Sol Gel ◽  
Industrial Effluent ◽  
Color Removal ◽  
Textile Effluent ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Photocatalytic Process

Abstract The present work aimed at evaluating the photocatalytic process as an alternative for color removal from a synthetic solution (methylene blue dye) and of a sample of textile effluent, obtained from the various stages of the process, mainly dyeing. The parameters were evaluated using titanium dioxide (anatase, rutile, commercial and synthetized by the sol-gel method) in order to determine their structural influence in the discoloration of the samples. A synthetic methylene blue dye solution and a real effluent (Brazilian textile industry) were treated. The photocatalytic degradation was carried out over three hours in a batch reactor, under constant agitation, aeration, radiation and temperature. It was observed that the characteristics of each catalyst directly influence the photocatalytic activity. As a result, for the variables used in this work, the photocatalyst TiO2 anatase phase with a concentration of 1 kg/m³ was the most efficient condition, presenting full color removal for the methylene blue and 71% for the sifted textile effluent.

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