Removal of a common textile dye, navy blue (NB), from aqueous solutions by combined process of coagulation–flocculation followed by adsorption

Nourmoradi, Heshmatollah; Zabihollahi, Solmaz; Pourzamani, Hamidreza

doi:10.1080/19443994.2014.1003102

Cited by 43 publications

(12 citation statements)

References 40 publications

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“…Where; R (%) is the removal efficiency of DR 60. C0 (mg l -1 ) and Ce (mg l -1 ) are the initial and equilibrium dye concentrations, respectively (Faghihian et al, 2014;Nourmoradi et al, 2015b). An UV-Vis spectrophotometer (HACH, DR5000, USA) was used to determine DR 60 concentration at the maximum absorbance wavelength (586 nm).…”

Section: Coagulation-flocculation Experimentsmentioning

confidence: 99%

Effect of Praestol as a Coagulant-Aid to Improve Coagulation-Flocculation in Dye containing Wastewaters

Nourmoradi¹,

Rahmati²,

Javaheri³

et al. 2015

Global NEST Journal

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<div> This study was conducted to investigate the effect of praestol, as a coagulant-aid, to improve coagulation-flocculation process in the removal of disperse red 60 from aqueous solutions. The effect of various parameters including coagulants dose (10-1000 mg l-1), praestol dose (0-1000 mg l-1), solution pH (3-11), initial dye concentration (100-500 mg l-1), flocculation speed (30-60 rpm), flocculation time (15-30 min), settling time (5-60 min) and ionic strength (0-6 mg l-1) was evaluated on the dye removal. The dye removal efficiency was substantially increased by using praestol in the concentration of 80 mg l-1 and 400 mg l-1 for coagulation with alum and polyaluminum chloride (PACl), respectively. The maximum dye removal by alum coupled with praestol (Al-P) and PACl coupled with praestol (PA-P) was found to be 97.8% and 98.7%, respectively that were occurred at pH 7. The results showed that the application of PA-P or Al-P can be effectively used to remove disperse red 60 (DR 60) in aqueous solutions. </div>

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Section: Coagulation-flocculation Experimentsmentioning

confidence: 99%

Effect of Praestol as a Coagulant-Aid to Improve Coagulation-Flocculation in Dye containing Wastewaters

Nourmoradi¹,

Rahmati²,

Javaheri³

et al. 2015

Global NEST Journal

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“…Different types of physical, chemical, electrochemical and biological methods are used for decolorization of industrial wastewater ( Collivignarelli et al., 2019 ). Coagulation-flocculation, membrane treatment, advanced oxidation process, biological degradation, adsorption and various other technologies are frequently applied to discard dyes from water ( Grace Pavithra et al., 2019 ; Collivignarelli et al., 2019 ; Nourmoradi et al., 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Sustainable removal of anodized aluminum dye by groundwater treatment waste: experimental and modeling

Sodaitienė

Gefenienė

Kaušpėdienė

et al. 2021

Heliyon

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Groundwater treatment waste (GWTW), as an environmentally friendly renewable nanomaterial, was implemented for the removal of anodized aluminum dye Sanodure Green (SG) from aqueous solutions. The capability of the SG metal complex dye removal was assessed by measuring solution decoloration and chromium elimination degree. GWTW was characterized using FTIR, SEM, EDX, TEM, XPS and surface area measurements. Kinetic curves were obtained by changing initial dye concentration, pH, temperature and adsorbent dose. Kinetic studies showed that up to 90 % of SG dye was removed within a contact time of 20 min. The adsorption of the dye was favourable at 293 K temperature in the acidic pH region (pH 1.5–2.0) with maximum adsorption capacity 185 mg g −1 . Langmuir-Freundlich isotherm model as well as hyperbolic tangent, diffusion-chemisorption and Elovich kinetic models accurately describe the dye removal process. The calculated thermodynamic parameters confirmed that SG dye removal occurred spontaneously and exothermically. The magnitude of enthalpy change (ΔH ° = −35.80 kJ mol −1 ) was in agreement with the electrostatic interaction. The adsorption potential of GWTW for SG dye removal was also evaluated using a real wastewater produced after dyeing of anodized aluminum.

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“…Therefore, the removal of dyes from wastewater to avoid severe toxicity to aquatic life is one of the most pressing scientific concerns. So far, several techniques have been employed to combat this issue, including nanofiltration [ 3 ], cloud point extraction [ 4 ], ozonation [ 5 ], flocculation [ 6 ], photo-degradation [ 7 ], oxidation [ 8 ], coagulation [ 9 ], and microbial degradation [ 10 ]. However, various inadequacies, such as high operational costs, inefficiency, and generation of toxic byproducts, hinder the applicability of these techniques for wastewater treatment [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient and Sustainable Spent Mushroom Waste Adsorbent Based on Surfactant Modification for the Removal of Toxic Dyes

Alhujaily

Zhang

et al. 2018

IJERPH

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The treatment of wastewater always demands eco-friendly and cost-efficient adsorbents. In this paper, spent mushroom waste (SMW) was modified by a cationic surfactant (cetyltrimethylammonium bromide, CTAB) to eliminate toxic dyes. A characterization of adsorbents confirmed that CTAB was successfully embedded into the SMW structure. The spent mushroom waste, modified by CTAB (SMWC), exhibited an excellent adsorption capacity of 249.57 mg·g−1, 338.67 mg·g−1, and 265.01 mg·g−1 for the Direct red 5B (DR5B), Direct blue 71 (DB71), and Reactive black (RB5) dyes, respectively. Batch experiments indicated that the dye adsorption of SMWC depended mainly on pH, dye concentration, temperature, and ionic strength. The adsorption isotherm could be fitted to the Langmuir model and described by the pseudo-second-order kinetic model. The dye adsorption mechanism was dominated mostly by the chemosorption of the dyes and the SMWC surface. Thermodynamic parameters showed that the adsorption was endothermic and spontaneous. SMWC could successfully remove over 90% of dyes from various water samples. This can be considered a feasible waste resource utility, since it meets both the ecological and the economic requirements for auspicious industrial applications.

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Removal of a common textile dye, navy blue (NB), from aqueous solutions by combined process of coagulation–flocculation followed by adsorption

Cited by 43 publications

References 40 publications

Effect of Praestol as a Coagulant-Aid to Improve Coagulation-Flocculation in Dye containing Wastewaters

Effect of Praestol as a Coagulant-Aid to Improve Coagulation-Flocculation in Dye containing Wastewaters

Sustainable removal of anodized aluminum dye by groundwater treatment waste: experimental and modeling

Highly Efficient and Sustainable Spent Mushroom Waste Adsorbent Based on Surfactant Modification for the Removal of Toxic Dyes

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