Removal of phenol from aqueous medium using micellar solubilization followed by ionic flocculation

Cavalcante, P.R.M.; Melo, Ricardo Paulo Fonsêca; Dantas, Tereza Neuma de Castro; Neto, Afonso Avelino Dantas; Neto, Eduardo Lins de Barros; Moura, M. C. P. A.

doi:10.1016/j.jece.2018.04.025

Cited by 22 publications

(5 citation statements)

References 22 publications

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“…Above 11 (considered to be the optimal pH), the increase in pH had no influence on the MB removal efficiency. Similar results were observed for the removal of phenol [ 38 ] and malachite green dye [ 39 ] by ionic flocculation.…”

Section: Resultssupporting

confidence: 82%

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Teixeira

Filho²,

Bacurau³

et al. 2022

Heliyon

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Section: Resultssupporting

confidence: 82%

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Teixeira

Filho²,

Bacurau³

et al. 2022

Heliyon

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“…The CaCl 2 was weighed so that the calcium ion concentration in solution was half the surfactant concentration. This proportionality has little effect on process efficiency (Cavalcante et al 2018).…”

Section: Ionic Flocculation Testsmentioning

confidence: 99%

Malachite green removal using ionic flocculation

Teixeira

Melo

Fernandes

et al. 2022

Water Practice and Technology

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The use of ionic flocculation is proposed to remove malachite green (MG), in this case, from water. A surfactant with the polluted solution and calcium is added. The surfactant-calcium reaction forms a precipitate, which aggregates into flocs on agitation. The flocs adsorb MG, which can then be removed by centrifugation. Ionic flocculation was assessed by varying parameters including: surfactant and MG concentrations, electrolyte content, pH, contact time, etc. The isotherm and adsorption kinetic models that best fit this process are the Langmuir and pseudo-second order models, respectively. MG removal efficiency of 96% was obtained at pH 9, with surfactant concentration 1,400 mg L−1, MG concentration 10 mg L−1 and contact time 10 minutes. The process has potential for pollutant removal.

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“…In the presence of surfactants, the phenol could be solubilized in the micelles, and cations (M2 + and M3 +) promoted the capture of these micelles, corroborating the negative correlation. These cations are present in the hospital wastewaters (Cavalcante et al, 2018 ; Sultana, et al, 2021 ). Sulfites can be formed in the degradation of bacteria.…”

Section: Resultsmentioning

confidence: 99%

Anionic surfactants monitoring in healthcare facilities — a case of Belo Horizonte City, Brazil

Trajano

Vasconcelos

Pataca

et al. 2022

Environ Monit Assess

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Surfactants are substances that when in aquatic environments can cause negative impacts. Hospital effluents carry numerous chemicals daily, including surfactants, used in sanitization and disinfection procedures. These chemicals are found in the effluents and reach water bodies due to a lack of proper removal in the wastewater treatment plants. The present study investigated data about wastewater monitored from healthcare facilities located in the city of Belo Horizonte, Brazil, focusing on anionic surfactants. The results showed 72 establishments monitoring this parameter, resulting in a median concentration of 1 mg L −1 and 2.49 mg L −1 mean value of anionic surfactants, between 2007 and 2019. It is also observed in the correlation between surfactants and oils in all healthcare establishment sizes, except for the medium-sized. Although anionic surfactants are the most used in cleaning product formulations, cationic surfactants still do not have specific legislation in the studied country that dictates a limit for discharge into sewage; consequently, they are not routinely monitored in effluents. However, these compounds are used in the formulation of routine hospital products.

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Removal of phenol from aqueous medium using micellar solubilization followed by ionic flocculation

Cited by 22 publications

References 22 publications

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Malachite green removal using ionic flocculation

Anionic surfactants monitoring in healthcare facilities — a case of Belo Horizonte City, Brazil

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