Evaluation of the performance of adsorption and coagulation processes for the maximum removal of reactive dyes

Lee, Jae‐Wook; Choi, Seung-Phil; Thiruvenkatachari, Ramesh; Shim, Wang Geun; Moon, Hee

doi:10.1016/j.dyepig.2005.03.008

Cited by 438 publications

(219 citation statements)

References 26 publications

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“…The optimal pH range for AlCl 3 varied with the type of dyes and level of dosages. Nevertheless, it can be deduced based on the overall results that the maximum removal occurred at pH around 6.0 for AlCl 3 , which was in agreement with the results reported by Lee et al [3]. It can also be seen that under higher dosage, the coagulation zone of AlCl 3 was broader than that under lower dosage.…”

Section: Effect Of Ph On Coagulation Of Direct Dyessupporting

confidence: 91%

“…It is obvious that Al 13 was the most efficient coagulant at both pH levels. PACl exhibited significantly higher removals than AlCl 3 although the pH of 5.8 was within the coagulation zone favorable for AlCl 3 . It can be seen that the coagulation features of AlCl 3 were markedly different under pH of 5.8 and 3.5.…”

Section: Effect Of Ph On Coagulation Of Direct Dyesmentioning

confidence: 91%

“…Stock dye solutions of 1000 mg l −1 were prepared and then diluted using tap water to obtain final concentration of 50 mg l −1 . The pH of the simulated test water was controlled within 7.80 ± 0.05; the alkalinity was 155 mg l −1 as CaCO 3 . The wavelengths of maximum absorbance (λ max ) of these dyes with the background of tap water were determined according to scanning patterns performed on an UV-vis 8500 Spectrophotometer (Shanghai, China).…”

Section: Dye Compounds and Test Watersmentioning

confidence: 99%

“…Three commonly used direct dyes were chosen as model dye pollutants. AlCl 3 and commercially available PACl were applied as typical traditional coagulant and inorganic polymer flocculant. Since PACl contains multiple Al species including both Al 13 and colloidal species, it is difficult to distinguish the roles of Al 13 from other species.…”

Section: Introductionmentioning

confidence: 99%

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Removal of direct dyes by coagulation: The performance of preformed polymeric aluminum species

Shi

Wang

et al. 2007

Journal of Hazardous Materials

509

172

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Removal of three direct dyes (Direct Black 19, Direct Red 28, and Direct Blue 86) by coagulation with three different Al based coagulants was investigated. The main purpose of this paper is to examine the coagulation features of polymeric aluminum coagulants in treatment of dye-polluted waters and the emphasis was placed on the roles of preformed Al species, particularly Al 13 . The performance of Al 13 in coagulation of dyes was observed through jar tests by comparing traditional Al salt, polyaluminum chloride (PACl), and purified Al 13 . The results showed that under most cases Al 13 had significantly higher efficiency in removal of direct dyes than traditional Al salt and commercial PACl with the exception of Direct Red 28 removal under high pH range. The coagulation of direct dyes could be greatly affected by pH. Reducing pH was favorable for preformed Al species in a broad pH range. For traditional Al coagulant, efficient dye removal only occurred in a relatively narrow pH range of near 6.0. The outstanding coagulation behavior of Al 13 could be ascribed to its high charge neutralization ability, relative stability and potential self-assembly tendency.

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Section: Effect Of Ph On Coagulation Of Direct Dyessupporting

confidence: 91%

Section: Effect Of Ph On Coagulation Of Direct Dyesmentioning

confidence: 91%

Section: Dye Compounds and Test Watersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Removal of direct dyes by coagulation: The performance of preformed polymeric aluminum species

Shi

Wang

et al. 2007

Journal of Hazardous Materials

509

172

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“…There are over an estimated 100,000 kinds of commercially available dyes with an output of > 7  10 5 tons per year. However, around 10 to 20% of dyes used in textile dyeing processes have been estimated to have been lost into dye wastewater because of the low fixation between dyes and fibers, and the washing operations needed (Lee et al 2006;Noroozi and Sorial 2013). Organic dyes are synthetic, aromatic compounds that possess intense color and high toxicity.…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Li¹,

Lijuan²

2014

BioResources

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Microcrystalline cellulose (MCC) was functionalized with quaternary amine groups for use as an adsorbent to remove Congo Red dye (CR) from aqueous solution. The ultrasonic pretreatment of MCC was investigated during its functionalization. Characterization was conducted using infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The batch adsorption of the functionalized MCC was studied to evaluate the effects of dye concentration, pH of solution, temperature, and NaCl concentration on the adsorption CR. The adsorbent (FM-1) obtained using ultrasonic pretreatment of MCC under 10.8 kJ•g -1 exhibited an adsorption capacity of 304 mg•g -1 at initial pH under a dose of 0.1 g•L -1 and initial concentration of 80 mg•L -1 . After functionalization, the FT-IR and XPS results indicated that the quaternary amine group was successfully grafted onto the cellulose, the surface was transformed to be coarse and porous, and the crystalline structure of the original cellulose was disrupted. FM-1 has been shown to be a promising and efficient adsorbent for the removal of CR from an aqueous solution.

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Nanofiltration of Textile Dye Effluent

Thamaraiselvan

Lau

2021

Nanofiltration

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Evaluation of the performance of adsorption and coagulation processes for the maximum removal of reactive dyes

Cited by 438 publications

References 26 publications

Removal of direct dyes by coagulation: The performance of preformed polymeric aluminum species

Removal of direct dyes by coagulation: The performance of preformed polymeric aluminum species

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Nanofiltration of Textile Dye Effluent

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