Decolourization of dye-containing effluent using mineral coagulants produced by electrocoagulation

Zidane, Fatiha; Drogui, Patrick; Lekhlif, Brahim; Bensaïd, Jalila; Blais, Jean‐François; Belcadi, S.; Kacemi, K. El

doi:10.1016/j.jhazmat.2007.11.041

Cited by 82 publications

(38 citation statements)

References 67 publications

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“…Using effluent from the Chemomi tea factory in Rift Valley, Kenya, the authors were capable to reduce COD by 96.6%, BOD by 84.0%, and conductivity by 31. and 96% removal efficiency, where the absorption was at 540 nm through 60 minutes of treatment, where concentration ranges between 100 and 400 mg/L. At the 400 mg/L concentration, 88% absorption occurs within 10 minutes, as compared to 60% when using direct coagulation using an electric potential of 10 to 15 V. However, 100% removal could be achieved when using electrochemical treatment [45]. Kalyani et al determined that COD removal was 95% and color removal was 92% when using mild steel, and 89% color and COD removal for aluminum electrodes when attempting to treat pulp and paper industrial effluent.…”

Section: Decolorizationmentioning

confidence: 99%

Electrocoagulation in Wastewater Treatment

Butler

Hung

Yeh

et al. 2011

Water

217

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Section: Decolorizationmentioning

confidence: 99%

Electrocoagulation in Wastewater Treatment

Butler

Hung

Yeh

et al. 2011

Water

217

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“…Decolorization of dye-containing effluent using mineral coagulant produced electrocoagulation was studied [90]. The inorganic coagulants used were labeled as C1 (produced from electrolysis of NaOH, 7.5 × 10 −3 M), C2 (from electrolysis of NaCl, 10 −2 M) and C3 (from electrolysis of NaOH, 7.5 × 10 −3 M + NaCl, 10 −2 M).…”

Section: Coagulation/flocculationmentioning

confidence: 99%

Dye Waste Treatment

Ong

Keng

Lee

et al. 2011

Water

112

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Dye wastes represent one of the most problematic groups of pollutants because they can be easily identified by the human eye and are not easily biodegradable. This literature review paper highlights and provides an overview of dye waste treatments performed over the three years period from 2008-2010. Noteworthy processes for the treatment of dye waste include biological treatment, catalytic oxidation, filtration, sorption process and combination treatments.

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“…The dyes removal methods are included: coagulation [1], oxidative methods [2], biological treatment [3], sorption methods [4] and so on. Among these methods the adsorption is the most effective for deep removal of dyes from aqueous solutions [5].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Clay Sorbent for the Removal of Dyes from Aqueous Solutions

Makarchuk

Dontsova

Астрелін

2015

Research Bulletin of the National Technical University of Ukraine "Kyiv Polytechnic Institute"

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Background. Saponite is low-cost sorbent and is effective for removal of organic pollutants, dyes, heavy metal ions from water. However, saponite sorbents are not widely used. The saponite particles waste is removed from the solution after sorption process with considerable difficulties due to their high dispersion. To overcome this difficulty clay particles can be magnetized by magnetite, then by simple procedure (magnetic separation) removed from the water. Objective. The purpose of this article is synthesis magnetically controlled sorbents based on saponite and magnetite (Fe 3 O 4 ) by different schemes; the characterization of obtained sorbents and determination of their adsorption properties towards dyes; choice of magnetic module design. Methods. In the paper modern physic-chemical and experimental research methods were used: X-ray fluorescence, X-ray analysis, physical adsorption/desorption of Nitrogen, sorption and magnetic separation process. Results. It was found that magnetic modification (in an amount of 2 % magnetite by weight) of saponite by impregnation method allows obtaining mesoporous sorbents with good sorption and magnetic properties. The detected adsorption capacity of magnetically sorbents for all types of dyes (anionic, cationic and nonionic) was 1.5-2.5 times bigger than that for native saponite. Conclusions. It is shown that modification of saponite by magnetite not only improves its magnetic properties, but also increases its absorption characteristics (specific surface area, sorption capacity). The impregnation method allows obtaining magnetic clay sorbent with better sorption and magnetic characteristics. The pyramid magnetic module was the most effective magnetic module design for deposition of spent magnetic sorbent.

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Decolourization of dye-containing effluent using mineral coagulants produced by electrocoagulation

Cited by 82 publications

References 67 publications

Electrocoagulation in Wastewater Treatment

Electrocoagulation in Wastewater Treatment

Dye Waste Treatment

Magnetic Clay Sorbent for the Removal of Dyes from Aqueous Solutions

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