Removal of Copper from Aqueous Amminecopper(II) Solution by Foam Flotation

Luo, Chien-Shu; Huang, Shang‐Da

doi:10.1080/01496399308018046

Cited by 6 publications

(2 citation statements)

References 34 publications

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“…The main sources of mercury pollution are the emissions from coal combustion [2,3]. Other sources include different industrial activities in the fields of paper, pigments, oil refinery and pharmaceutical production [6]. There are many methods for mercury(II) remediation from wastewater before their discharge to surface water including precipitation, membrane filtration, ion exchange column and adsorption [7,8].…”

Section: Introductionmentioning

confidence: 99%

Phosphonium-based Ionic Liquid Modified Activated Carbon from Mixed Recyclable Waste for Mercury(II) Uptake

et al. 2019

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The contamination of water surfaces by mercury is a dangerous environmental problem due to its toxicity, which leads kidney damage. Activated carbon from mixed recyclable waste modified by phosphonium-based ionic liquid (IL-ACMRW) was therefore prepared and evaluated for Hg(II) remediation. The activated carbon used in this study was prepared from mixed waste, including cardboard, papers and palm wastes as cheap raw materials. The mixed Recyclable Waste Activated Carbon was combined with trihexyl(tetradecyl)phosphonium Bis2,4,4-(trimethylpentyl)phosphinate (Cyphos® IL 104) ionic liquid to form an adsorbent with organic-inorganic content, in order to improve the Hg(II) uptake from aqueous solutions. FTIR confirms the presence of P, C=O and OH after this modification. The adsorption process was investigated and the evaluated results showed that the capacity was 124 mg/g at pH 4, with a contact time of 90 min, an adsorbent dose of 0.4 g/L, and a Hg(II) concentration of 50 mg/L. This Hg(II) adsorption capacity is superior than that reported in the literature for modified multiwall carbon nanotubes. The adsorption of Hg(II) on the modified activated carbon from mixed recyclable waste was found to follow the pseudo second-order kinetics model. Isotherms of adsorption were analyzed via Freundlich and Langmuir models. The results indicated that Freundlich is the best model to describe the process, suggesting multilayer adsorption.

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Section: Introductionmentioning

confidence: 99%

Phosphonium-based Ionic Liquid Modified Activated Carbon from Mixed Recyclable Waste for Mercury(II) Uptake

et al. 2019

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“…Several methods for copper removal from wastewaters have been proposed and these are flotation (Ghazy et al, 2006;Luo and Huang, 1993), adsorption (Korkmaz et al, 2013;Juang et al, 1999), ion exchange (Veli and Pekey, 2004;Cerjan-Stefanovic et al, 1996), electrodialysis (Caprarescu et al, 2014;Öğütveren et al, 1997), solvent extraction (Kitobo et al, 2010;Sole and Hiskey, 1995), and membrane filtration (Malamis et al, 2010;Juang and Chen, 1997). Biosorbents are naturally abundant materials and by-products arising from some industries or agricultural production (Lu and Gibb, 2008).…”

Section: Introductionmentioning

confidence: 99%

Kinetic and Fixed Bed Studies for Copper Removal from Solutions by Walnut Tree Sawdust (Juglans regia Linnaeus)

2017

Global NEST Journal

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This study investigates the adsorption kinetics and removal conditions of copper by walnut tree sawdust from synthetic solutions in the batch and fixed bed reactors. The selected experimental parameters for the batch reactor were concentration, solution pH, adsorbent amount and temperature. The optimum batch reactor conditions were applied to the fixed bed reactor. The experimental parameters of the fixed bed reactor were flow rate, bed height, and concentration. The optimum removal conditions for copper removal in the batch reactor were determined as pH (5), temperature (25 o C), concentration (25 mg/L), and adsorbent dosage (10 g/L). The kinetic data obtained from the batch reactor were analyzed by the pseudo-first-order and the pseudo-second-order kinetic models and the kinetic data were successfully correlated with the pseudo-second-order model. Activation energy of the process was calculated to be 15.79 kJ/mol. The optimum parameters for the fixed bed reactor were designated as 0.5 mL/min flow rate, 100 mg/L concentration and 15 cm bed height. The kinetic data obtained from the fixed bed reactor were analyzed with the Yoon-Nelson and Thomas kinetic models. The fixed bed kinetics could be described with the Thomas model. Maximum adsorption capacity was calculated as 6.24 mg/g in the fixed bed reactor.

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Metal finishing and processing

Enzminger¹

1994

Water Environment Research

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Removal of Copper from Aqueous Amminecopper(II) Solution by Foam Flotation

Cited by 6 publications

References 34 publications

Phosphonium-based Ionic Liquid Modified Activated Carbon from Mixed Recyclable Waste for Mercury(II) Uptake

Phosphonium-based Ionic Liquid Modified Activated Carbon from Mixed Recyclable Waste for Mercury(II) Uptake

Kinetic and Fixed Bed Studies for Copper Removal from Solutions by Walnut Tree Sawdust (Juglans regia Linnaeus)

Metal finishing and processing

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