A New Alternative and Efficient Low-Cost Process for the Removal of Reactive Dyes in Textile Wastewater by Using Soybean Hull as Adsorbent

Spent tea leaves (STL), a valueless waste produced during the manufacturing of tea beverages, were investigated as a potential low-cost adsorbent for the removal of the azo dyes Reactive Blue 19 (RB19), Reactive Red 120 (RR 120), Reactive Violet 5 (RV5) and Reactive Green 19 (R19) from wastewater. Untreated STL showed very low removal efficiency (< 7%), while a significant increase in dye adsorption was observed when they were thermally activated. Heating STL to 300 °C for 1 hour resulted in removal efficiencies ranging from 68.5 to 98.4%. Characterization of the waste by FTIR and TG/DTA indicated that major structural and/or chemical changes of the cellulose and hemicellulose components of STL occurred during heating.

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Empirical Equilibrium Study on Rice Husk and Eggshells as Low Cost Bioadsorbent for the Methylene Blue Removal

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.699.221 ◽

2014 ◽

Vol 699 ◽

pp. 221-226

Author(s):

Nurul Hanim Razak ◽

Md. Razali Ayob ◽

M.A.M. Zainin ◽

M.Z. Hilwa

Keyword(s):

Methylene Blue ◽

Rice Husk ◽

Low Cost ◽

Agricultural Waste ◽

Textile Wastewater ◽

Blue Dye ◽

Rice Husks ◽

Equilibrium Study ◽

Porosity Characterization

Eggshells and rice husk, two types of notable agricultural waste were used as bioadsorbent to remove Methylene Blue dye (MBD) in aqueous solution. This study was to investigate the performance of these two bioadsorbents in removing MBD. The removal percentage, adsorption capacity, and porosity characterization were examined. The method applied was a physical filtration. UV-VIS Spectrophotometer was used to determine the efficiency of the bioadsorbents in MBD adsorption. The highest removal percentage at the most concentrated MBD were 51% and 98% for eggshells and rice husks respectively. Meanwhile the characterization of rice husks pore size and volume proves that higher adsorptivity towards dye compares to eggshells porosity. It was concluded that the eggshells and rice husks bioadsorbents was successful to treat industrial textile wastewater with rice husks as the most efficient bioadsorbent in removing MBD.

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Bioremediation of Some Reactive Dyes Commonly used in Fabric Re-dyeing by Chlorella vulgaris

Asian Journal of Environment & Ecology ◽

10.9734/ajee/2021/v15i430233 ◽

2021 ◽

pp. 10-19

Author(s):

Zainab M. Sani ◽

Aisha S. Dalhatu ◽

Baha’uddeen S. Adam ◽

Kasim Mohammed ◽

Yusuf Y. Muhammad ◽

...

Keyword(s):

Chlorella Vulgaris ◽

Dye Removal ◽

Statistical Significance ◽

Reactive Dyes ◽

Basal Medium ◽

Textile Wastewater ◽

Cost Effective ◽

P Value ◽

Wastewater Samples ◽

Reactive Green 19

Aim: The work was aimed at assessing the potential of Chlorella vulgaris in remediation of reactive dyes. Place and Duration of Study: Department of Biological Sciences, Department of Plant Biology and Department of Biochemistry, Bayero University, Kano, Nigeria, between January 2019 and December 2019. Methodology: Wastewater containing individual reactive dyes: reactive red 198 (RR198), reactive yellow 176 (RY176), reactive green 19 (RG19), reactive orange 122 (RO122), reactive red 195 (RR195) and reactive violet 1 (RV1) were collected from a local fabric re-dyeing pit at Kofar Na’isa, Kano, Nigeria. The green microalga C. vulgaris was cultured in Bold Basal medium (BBM) at 30 ± 2°C and subjected to adsorption and decolourization assays of the dyes. Results: The highest dye removal efficiency by enzymatic action was recorded after 48 hours, while that for the biomass adsorption was at day 14, at pH 11.3 and temperature of 30°C. The percentage dye removal by adsorption and decolourization were within the ranges of 68.1-97.8% and 69.8-99.9% respectively. Dye removal decreased with increase in contact time until saturation is attained. Freundlich’s isotherm model was best fitted for the adsorption of the dyes with a strong linear correlation coefficient, R2 ranging from 0.954-0.811. There was a strong linear relationship and high statistical significance among the dyes for both decolourization and adsorption (P value; .01). Conclusion: Chlorella vulgaris was found to be effective in the removal of reactive dyes from textile wastewater samples. The results revealed C. vulgaris to be a cost-effective and eco-friendly biosorbent that can be used for the treatment of wastewaters containing toxic dyes.

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Electrocoagulation Influencing Parameters Investigation on Reactive Dyes in Textile Wastewater

10.1201/9781003140382-14 ◽

2021 ◽

pp. 231-246

Author(s):

Mohit Garg ◽

Sarbani Ghosh ◽

Amit Kumar ◽

Vikram Chopra ◽

Indra Deo Mall ◽

...

Keyword(s):

Reactive Dyes ◽

Textile Wastewater ◽

Influencing Parameters

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Utilization of Waste Leather Powders for Highly Effective Removal of Dyes from Water

Polymers ◽

10.3390/polym11111786 ◽

2019 ◽

Vol 11 (11) ◽

pp. 1786 ◽

Cited By ~ 8

Author(s):

Liangjun Xia ◽

Chen Li ◽

Sijie Zhou ◽

Zhuan Fu ◽

Yun Wang ◽

...

Keyword(s):

Low Cost ◽

Dye Adsorption ◽

Reactive Dyes ◽

Infrared Analysis ◽

Leather Industry ◽

Textile Materials ◽

Effective Removal ◽

Highly Effective ◽

Equilibrium And Kinetics ◽

Pseudo Second Order

As a natural polymer, leather and its associated industries are known to be the leading economic sector in many countries. However, the huge amounts of leather waste generated from the leather industry causes severe environmental pollution. Herein, cow leather (CL) powders were prepared using a homemade machine and used as a low-cost adsorbent for the effective removal of reactive dyes from wastewater. The as-prepared CL powders exhibited dot-like, rod-like, and fiber-like morphologies. A Fourier transform infrared analysis and an x-ray diffraction analysis demonstrated that the CL powders retained the main structure of the protein contained in it. In addition, an improvement in thermal stability was also observed for the CL powders. Dye adsorption experiments indicate that the CL powders showed the highly effective removal of C.I. Reactive Red 120 (RR120), C.I. Reactive Yellow 127 (RY127), and C.I. Reactive Blue 222 (RB222) with the adsorption capacity of 167.0, 178.9, and 129.6 mg·g−1, respectively. The Langmuir, pseudo-second order, and intraparticle diffusion models could well depict the adsorption equilibrium and kinetics of CL powders toward the investigated reactive dyes. The as-prepared CL powders can be used as a potential adsorbent in the treatment of dye contaminated wastewater. Future studies will mainly focus on the application of the adsorbed CL powders for the pigment printing of textile materials.

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Modified coal fly ash as low cost adsorbent for removal reactive dyes from batik industry

MATEC Web of Conferences ◽

10.1051/matecconf/201815401037 ◽

2018 ◽

Vol 154 ◽

pp. 01037 ◽

Cited By ~ 4

Author(s):

Agus Taufiq ◽

Pratikno Hidayat ◽

Arif Hidayat

Keyword(s):

Fly Ash ◽

Low Cost ◽

Coal Fly Ash ◽

Reactive Dyes ◽

Bet Surface Area ◽

Batch Adsorption ◽

Operational Parameters ◽

Solution Ph ◽

Percentage Removal ◽

Modified Fly Ash

The removal of reactive dyes on modified coal fly ash has been investigated during a series of batch adsorption experiments. Physical characteristics of modified coal fly ash was characterized by Brunauer Emmett Teller (BET) surface area analysis, X-ray powder diffraction (XRD), Fourier transform infrared spectrophotometer (FT-IR), and scanning electron microscope (SEM). The effects of operational parameters such as initial dye concentration (50–200 mg/L), solution pH (4–10) and adsorbent dosage (50–200 mg/L) were studied. The adsorption experiments indicated that modified coal fly ash was effective in removing of Remazol Blue. The percentage removal of dyes increased while the modified fly ash dosage increased. The percentage removal of dyes increased with decreased initial concentration of the dye and also increased with amount of adsorbent used. The optimum of removal of dyes was found to be 94% at initial dye concentration 50 g/mL, modified fly ash dosage 250 g/mL, and pH of 2.0.

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