Removal of copper ions using sodium hexadecanoate by ionic flocculation

Barros, Giselle Kalline Gomes Carvalho; Melo, Ricardo Paulo Fonsêca; Neto, Eduardo Lins de Barros

doi:10.1016/j.seppur.2018.01.062

Cited by 29 publications

(3 citation statements)

References 35 publications

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“…Results demonstrated that copper in an aqueous medium is removed thanks to the effective hydrophobization of the copper hydroxide particles formed in the medium. The results also show the effectiveness of both extracts (A. tequilana and A. lechuguilla) used as biosurfactants by having removal levels similar to chemically synthesized surfactants such as sodium hexadecanoate reported by Barros et al (2018) for the removal of copper in a synthetic effluent through ionic flocculation, in addition to complying with the standards established by Mexican regulations.…”

Section: Copper Removal By Satsupporting

confidence: 62%

Optimization of copper removal through spherical agglomeration: Effect of pH precipitation and the use of Agave spp. leaf extracts as biosurfactants

Alcázar-Medina,

Valle-Cervantes,

Alcazar-Medina

et al. 2023

RMIQ

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Section: Copper Removal By Satsupporting

confidence: 62%

Optimization of copper removal through spherical agglomeration: Effect of pH precipitation and the use of Agave spp. leaf extracts as biosurfactants

Alcázar-Medina,

Valle-Cervantes,

Alcazar-Medina

et al. 2023

RMIQ

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“…The World Health Organization (WHO) and United States Environmental Protection Agency (USEPA) have ruled that the concentration of copper in drinking water should not exceed 1.5 and 1.3 mg L −1 respectively . To meet these discharge levels, many methods have been used to remove heavy metals from wastewater, such as adsorption, chemical precipitation, chelation, ion exchange, solvent extraction, membrane filtration, etc . Among these methods, adsorption has become one of the most widely used and convenient methods for the treatment of heavy metal‐polluted water because of its advantages of fast adsorption rate and relatively high removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

A facilely synthesized polyanionic gel adsorbent with high adaptability and new adsorption effects for purification of Cu(II)‐containing wastewater

Song

Bai

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: Cu(II)-containing wastewater causes serious pollution of the water environment. Adsorption is one of the most commonly used water purification methods, with the selection of suitable adsorbents being the key factor. This motivates the development of new efficient adsorbents to purify Cu(II)-containing wastewater. RESULTS:A highly adaptable polyanionic gel (PAG) was synthesized by the facile crosslinking copolymerization of acrylic acid (AA) and triallylmethylammonium chloride (TAMAC) at 65 ∘ C for 0.5 h, followed by a simple neutralization treatment, avoiding the inconvenience of the complex and expensive preparation process required to prepare existing adsorbents. When first used as an adsorbent material, PAG achieved highly efficient purification of a wide concentration range of 10-2000 mg L −1 Cu(II)-containing wastewater. The PAG adsorption capacity for Cu(II) was 222.2 mg g −1 , which was higher than the values of selected existing adsorbent materials (9.50-214 mg g −1 ), and PAG had the advantages of being eco-friendly, facilely obtained and regenerable. Also, PAG maintained stable adsorption ability even when the adsorption temperature varied from 30 to 50 ∘ C. Moreover, a series of new adsorption effects were first observed as the key factors for PAG adsorption to achieve high adaptability.CONCLUSION: Generally, considering the comprehensive performances, PAG would have higher adaptability in the efficient purification of different concentrations and different temperatures of Cu(II)-containing wastewater. It would thus have better application in different water environments and be regarded as a better adsorbent alternative.

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“…"Cu 2+ adsorption by wine waste," BioResources 15(1), 1112-1133. 1113 membrane filtration (Caprarescu et al 2014;Kalaiselvi et al 2015), electrodialysis (Caprarescu et al 2015), and ionic flocculation (Carvalho Barros et al 2018). However, these removal methods for heavy metal have some disadvantages, such as its high cost, the incomplete removal of the contaminant or the possible of secondary contamination on the production, among others (Feng et al 2009;He et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Removal of copper ions from wastewater by adsorption onto a green adsorbent from winemaking wastes

Alcaraz

García‐Díaz

López

2019

BioRes

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Copper ion adsorption was studied using an activated carbon from winemaking wastes. The pH, temperature, activated carbon amount, and initial copper concentration were varied based on a full factorial 2k experimental design. Kinetic and thermodynamic studies were also performed. The adsorption kinetics followed a pseudo-second-order model. The adsorption data fit best to the Langmuir isotherm, compared with the Freundlich and Temkin models. The analysis of variance demonstrated that the pH and the activated carbon dosage had the greatest influences on the copper adsorption. The obtained activation energy suggested that the copper adsorption was physisorption. The best fit to a linear correlation was the moving boundary equation, which controls the kinetics of the adsorption of copper ions onto the activated carbon. X-ray photoelectron spectroscopy revealed the existence of different copper species (Cu2+, and Cu+ and/or Cu0) on the surface of the carbonaceous adsorbent after the adsorption, which could suggest a simultaneous reduction process.

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Removal of copper ions using sodium hexadecanoate by ionic flocculation

Cited by 29 publications

References 35 publications

Optimization of copper removal through spherical agglomeration: Effect of pH precipitation and the use of Agave spp. leaf extracts as biosurfactants

Optimization of copper removal through spherical agglomeration: Effect of pH precipitation and the use of Agave spp. leaf extracts as biosurfactants

A facilely synthesized polyanionic gel adsorbent with high adaptability and new adsorption effects for purification of Cu(II)‐containing wastewater

Removal of copper ions from wastewater by adsorption onto a green adsorbent from winemaking wastes

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