Characterization and adsorptive capacity of coal fly ash from aqueous solutions of disperse blue and disperse orange dyes

Kisku, Ganesh Chandra; Markandeya,; Shukla, Sheo Prasad; Singh, D. Sen; Murthy, Ramesh

doi:10.1007/s12665-015-4098-z

Cited by 31 publications

(15 citation statements)

References 27 publications

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“…Here the characterization and modification of CFA has been done to obtain the best adsorbent and the optimal conditions in which its removal efficiency for disperse dyes is maximum. To prove its efficiency, characterization of activated carbon and its comparison with our best found adsorbent have also been done [10].…”

Section: Methodsmentioning

confidence: 99%

Management of Coal Fly Ash in Remediation Process

Markandeya¹,

Shukla²,

Mohan³

2020

Innovation in Global Green Technologies 2020

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The present research relates to class of adsorbents obtained by systematic biopolymer modification of cenospheres transfigured from coal fly ash (CFA): an immense waste by-product of coal based thermal power plant, method of preparation thereof and their use in wastewater treatment contaminated by tanneries, distilleries, cosmetics, textiles, plastics, pulp and paper industries, paints, electroplating and food processing industries effluents. Removal percentage of disperse dyes had better correlated with Langmuir isotherm, tested among Freundlich, Temkin and Redlich-Peterson isotherm which indicated saturated monolayer attachment of dye molecules onto the surface of adsorbent with maximum capacity 500.4 and 500.0 mg/g for Disperse Orange 25 (DO) and Disperse Blue 79:1 (DB) dyes, respectively. The uptake rate of dye molecules followed pseudosecond order kinetics in all cases. Recovery of dye molecules was completed best in three cycles with acetic acid for CFA and cenospheres, with Di-chloromethane for CNAC and in four cycles with non-polar solvent (chloroform) for zeolite and CNCH nanocomposite. The used adsorbents could easily be dumped into landfill with in concrete pit liming, or can also be used in brick making to minimize the environmental risk.

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Section: Methodsmentioning

confidence: 99%

Management of Coal Fly Ash in Remediation Process

Markandeya¹,

Shukla²,

Mohan³

2020

Innovation in Global Green Technologies 2020

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“…Many technologies like adsorption, coagulation-flocculation and membrane based technologies, biological methods, advanced oxidation/reduction methods etc. [5,11,12] have been reported to treat textile industry effluents. Adsorption onto activated carbon is associated with high cost, difficult regeneration and high waste disposal cost while other current processes are not economically feasible on a large scale [16,18,28].…”

Section: Introductionmentioning

confidence: 99%

Remediation of COD and color from textile wastewater using dual stage electrocoagulation process

Singh

Shukla

et al. 2019

SN Appl. Sci.

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The study has been done to investigate the effects of the current density on COD removal, color removal and electrode consumption on simulated textile wastewater using malachite green dye in the dual stage electrocoagulation process with settler. The results indicated that double stage electrocoagulation with settler is efficient at current density 165 A/m 2 and able to attain 92.60% COD removal and over 93.11% color removal. The most suitable current density for process is 135 A/m 2 in term of COD and color removal efficiency giving removal of 90.93 and 92.18%, respectively. analysis of variance (ANOVA) reveals that COD removal consistently changes for different COD concentrations among first and second stage electrocoagulation as well as settler. However, Tukey's test shows significant (P < 0.001) removal of COD. In case of color, ANOVA reveals significantly different color concentration among first and second stage electrocoagulation as well as settler. Moreover, Tukey's test also shows significant (P < 0.001) removal of color. In case of electrode consumption, t test revealed significant electrode consumption. Correlating the removal of COD concentration (mg/L) and electrode weight loss (mg) by Pearson correlation analysis for 1st reactor and 2nd reactor, it revealed a significant and positive correlation between COD removal and electrode weight loss (r = 0.98, P < 0.001) indicating that as removal in COD concentration increases, electrode weight loss increases.

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“…Ferrero (2015) studied the removal of acid and basic dyes from aqueous solution using coal fly ash. In another work, the removal of disperse blue and disperse orange dyes by coal fly ash from aqueous solutions was studied by Kisku et al (2015).…”

Section: Introductionmentioning

confidence: 99%

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

Taufiq

Hidayat

2018

MATEC Web Conf.

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Abstract. 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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Characterization and adsorptive capacity of coal fly ash from aqueous solutions of disperse blue and disperse orange dyes

Cited by 31 publications

References 27 publications

Management of Coal Fly Ash in Remediation Process

Management of Coal Fly Ash in Remediation Process

Remediation of COD and color from textile wastewater using dual stage electrocoagulation process

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

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