Removal mechanisms of copper using steel-making slag: adsorption and precipitation

Kim, Do-Hyung; Shin, Minchul; Choi, Hyun-Doc; Seo, Chang-Il; Baek, Kitae

doi:10.1016/j.desal.2007.01.226

Cited by 114 publications

(52 citation statements)

References 14 publications

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“…Hence, it is of great practical interest to develop effective technologies to remove Cu 2+ . Many methods, such as chemical precipitation, ion exchange, reverse osmosis, and adsorption, have been employed to remove Cu 2+ from solutions (Kim et al, 2008;Liu et al, 2006;Özcan et al, 2005). Among these methods, adsorption, being combined with appropriate desorption step, is an effective and versatile method and can avoid the disposal of large scale sludge.…”

Section: Introductionmentioning

confidence: 99%

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Wang

Kang

Liu

et al. 2009

Journal of Environmental Sciences

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A novel adsorbent (AMPS-silica) was synthesized by bounding AMPS (2-acrylamido-2-methylpropanesulfonic acid) onto silica surface, which functioned with γ-methacryloxypropyltrimethoxysilane reagent. The adsorbent was characterized by nitrogen adsorption/desorption measurement, thermogravimetric analysis (TGA) and potentiometric titration analysis. The TGA result indicated that the surface modification reactions introduced some organic functional groups onto the surface of silica. The surface area of AMPSsilica was 389.7 m 2 /g. The adsorbent was examined for copper ion removal in series of batch adsorption experiments. Results showed that the adsorption of Cu 2+ onto AMPS-silica was pH dependent, and the adsorption capacity increased with increasing pH from 2 to 6. The adsorption kinetics showed that Cu 2+ adsorption was fast and the data fitted well with a pseudo second-order kinetic model. The adsorption of Cu 2+ onto AMPS-silica obeyed both Freundlich and Langmuir isotherms, with r 2 = 0.993 and r 2 = 0.984, respectively. The maximum Cu 2+ adsorption capacity was 19.9 mg/g. The involved mechanism might be the adsorption through metal binding with organic functional groups such as carboxyl, amino and sulfonic groups. Cu 2+ loaded on AMPS-silica could be desorbed in HNO 3 solution, and the adsorption properties remain stable after three adsorption-desorption cycles.

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Section: Introductionmentioning

confidence: 99%

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Wang

Kang

Liu

et al. 2009

Journal of Environmental Sciences

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“…However, the contribution of either of the two mechanisms in the heavy metals removal process from solution was reported to be not fully understood [7]. (1) as heavy metals may not precipitate below pH of 4.0.…”

Section: Introductionmentioning

confidence: 99%

Kinetic of nickel (II) removal from aqueous solution using different particle size of water - cooled blast furnace slag

El-Dars

Elngar²,

Abdel-Rahim

et al. 2015

Desalination and Water Treatment

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2015)Kinetic of nickel (II) removal from aqueous solution using different particle size of water -cooled blast furnace slag, Desalination and Water Treatment, 54:3, 769-778, A B S T R A C TThe adsorption of nickel (II) from aqueous solution onto different particle sizes of watercooled blast furnace slag (WCBFS) was investigated. Batch experiments were performed to study the effect of contact time, initial concentration of nickel ions, initial pH of the solution, and temperature. The data was fitted to Langmuir and Freundlich isotherm models. The results showed that the Langmuir model better fitted the data obtained for the large-sized particles, while that for the finer-sized particles followed the Freundlich model best. Overall, the process was considered a second-order reaction which involved some degree of intraparticle diffusion. The calculated energy of activation indicated that it was a chemisorption process for both fine-and coarse-sized particles. In conclusion, the finest WCBFS particle size (0.3 mm) showed a good potential as an adsorbent to remove this divalent metal ions from solution.

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“…The inhalation or ingestion of a large quantity of manganese content may cause irritation to the lungs which could lead to pneumonia. Loss of sex drive and sperm damage has also been observed in men exposed to high levels of manganese in their body (Kim et al, 2007).…”

Section: Introductionmentioning

confidence: 88%

“…However, all these conventional methods are rather expensive (Kim et al, 2007;Chuah et al, 2004). The Electric Arc Furnace (EAF) slag is a waste material generated from the steel making process.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Study of Electric Arc Furnace Slag for the Removal of Manganese from Solution

Beh¹

2010

American Journal of Applied Sciences

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Problem statement: Steel making slag from Electric Arc Furnace (EAF) is an abundant byproduct in Malaysia steel making industry. It has potential to be used for heavy metal removal from contaminated water or waste water. Approach: The aim of this study was to investigate the characteristic and behavior of manganese removal by using EAF slag for efficient metal removal. The removal characteristics of manganese were investigated in term of sorption kinetics and isotherm. The batch adsorption kinetics and isotherm studies were carried out at 28°C and ten grams of EAF slag was added into 1 L manganese solution of various concentrations of 10, 25, 50, 75, 100 and 120 mg L −1 . All these different mixtures were stirred and sampled at various desired times and centrifuged. The supernatant solutions were then collected for chemical analysis. Results: It was found that the EAF slag adsorption kinetics can be described well by the pseudo-2nd order kinetic model with fairly high correlation coefficients. The adsorption process obeyed the Langmuir isotherm model and the maximum uptake of the manganese from the solution is 2.31 mg L −1 g −1 of EAF slag used. Conclusion:From the study, it was concluded that the EAF slag can be an efficient adsorbent to remove manganese from both the solution and waste water.

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Removal mechanisms of copper using steel-making slag: adsorption and precipitation

Cited by 114 publications

References 14 publications

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Kinetic of nickel (II) removal from aqueous solution using different particle size of water - cooled blast furnace slag

Adsorption Study of Electric Arc Furnace Slag for the Removal of Manganese from Solution

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