Stabilization and phase transformation of CuFe2O4 sintered from simulated copper-laden sludge

Li, Nien Hsun; Lo, Shang Lain; Hu, Ching Yao; Hsieh, Ching Hong; Chen, Ching Lung

doi:10.1016/j.jhazmat.2011.03.089

Cited by 54 publications

(18 citation statements)

References 21 publications

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“…It is well known that the CuFe 2 O 4 has good acid-resisting characteristic because of its spinel structure [27]. However, the structure would be destroyed if the pH is too low.…”

Section: Elution Test Of Cufe 2 Omentioning

confidence: 99%

Kinetics and thermodynamics of adsorption for Cd on green manufactured nano-particles

You

Chang

2012

Journal of Hazardous Materials

121

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“…It is well known that the CuFe 2 O 4 has good acid-resisting characteristic because of its spinel structure [27]. However, the structure would be destroyed if the pH is too low.…”

Section: Elution Test Of Cufe 2 Omentioning

confidence: 99%

Kinetics and thermodynamics of adsorption for Cd on green manufactured nano-particles

You

Chang

2012

Journal of Hazardous Materials

121

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“…CuFe 2 O 4 is a well-known magnetic material and exhibits excellent chemical stability, good biocompatibility, ecofriendliness, low toxicity, and low cost [20,21]; consequently, it has been used for contaminant adsorption [22].…”

Section: Introductionmentioning

confidence: 99%

Highly enhanced selectivity for the separation of rhenium and molybdenum using amino-functionalized magnetic Cu-ferrites

Yang

Liu

et al. 2015

J Mater Sci

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An effective method based on magnetic solidphase extraction for the selective recovery of rhenium and molybdenum has been developed using diethylaminefunctionalized magnetic CuFe 2 O 4 (NH 2 @CuFe 2 O 4 ) as adsorbents. Various experimental parameters that could affect the extraction efficiency had been investigated in detail. NH 2 @CuFe 2 O 4 exhibited high adsorption ability and selectivity to ReO À 4 and MoO 2À 4 ; selective separation of ReO À 4 and MoO 2À 4 could be achieved by adjusting pH of the aqueous solution. The ReO À 4 =MoO 2À 4 adsorption reaction was found to be fast, and the adsorption equilibrium was attained within 6.0 min following a pseudo-secondorder model with an observed rate constant (k 2 ) of 0.0215 mgÁg -1 Ámin -1 /0.0496 mgÁg -1 Ámin -1 at 298 K. The adsorption data could be well interpreted by the Langmuir model. The maximum adsorption capacities for ReO À 4 and MoO 2À 4 obtained from the Langmuir model are 41.667 and 62.893 mg g -1 , respectively. The extraction recovery of ReO À 4 =MoO 2À 4 was more than 93 % from Mo-Re simulated industrial leach liquor.

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“…6,7 It is also mixed with red mud, the mixture of which is calcined at 550°C to produce catalyst for propane oxidation. 8 All these examples show that the electroplating sludge is recyclable.…”

Section: ■ Introductionmentioning

confidence: 99%

Efficient Selective Catalytic Reduction of NO by Novel Carbon-doped Metal Catalysts Made from Electroplating Sludge

Zhang

et al. 2014

Environ. Sci. Technol.

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Electroplating sludges, once regarded as industrial wastes, are precious resources of various transition metals. This research has thus investigated the recycling of an electroplating sludge as a novel carbon-doped metal (Fe, Ni, Mg, Cu, and Zn) catalyst, which was different from a traditional carbon-supported metal catalyst, for effective NO selective catalytic reduction (SCR). This catalyst removed >99.7% NO at a temperature as low as 300°C. It also removed NO steadily (>99%) with a maximum specific accumulative reduced amount (MSARA) of 3.4 mmol/g. Gas species analyses showed that NO removal was accompanied by evolving N 2 and CO 2 . Moreover, in a wide temperature window, the sludge catalyst showed a higher CO 2 selectivity (>99%) than an activated carbon-supported metal catalyst. Structure characterizations revealed that carbon-doped metal was transformed to metal oxide in the sludge catalyst after the catalytic test, with most carbon (2.33 wt %) being consumed. These observations suggest that NO removal over the sludge catalyst is a typical SCR where metals/metal oxides act as the catalytic center and carbon as the reducing reagent. Therefore, our report probably provides an opportunity for high value-added utilizations of heavy-metal wastes in mitigating atmospheric pollutions.

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Stabilization and phase transformation of CuFe2O4 sintered from simulated copper-laden sludge

Cited by 54 publications

References 21 publications

Kinetics and thermodynamics of adsorption for Cd on green manufactured nano-particles

Kinetics and thermodynamics of adsorption for Cd on green manufactured nano-particles

Highly enhanced selectivity for the separation of rhenium and molybdenum using amino-functionalized magnetic Cu-ferrites

Efficient Selective Catalytic Reduction of NO by Novel Carbon-doped Metal Catalysts Made from Electroplating Sludge

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