Application of annular centrifugal contactors in the extraction flowsheet for producing high purity yttrium

Zhou, Jianhua; Duan, Wuhua; Zhou, Xiuzhu; Zhang, Chengqun

doi:10.1016/j.hydromet.2006.08.010

Cited by 58 publications

(30 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lanthanum, one of the most abundant of the lanthanides, is an important element of mischmetal and hydrogen-absorbing alloy [3], Neodymium is the raw material used in high-strength permanent magnets (Nd-BFe), making it less expensive than samarium-cobalt permanent magnets [7]. Yttrium is an important element and in great demand in astronavigation, luminescence, nuclear energy and metallurgical industries [8].…”

Section: Introductionmentioning

confidence: 99%

Sorption behavior of some lanthanides on polyacrylamide stannic molybdophosphate as organic–inorganic composite

2016

View full text Add to dashboard Cite

Sorption behavior of some lanthanide ions such as lanthanum and samarium ions on polyacrylamide stannic molybdophosphate {PASnMoP} as organic-inorganic composite has been investigated. ions on polyacrylamide stannic molybdophosphate was conducted. The adsorption isotherms were described by means of Langmuir and Freundlich isotherms for La 3? and Sm 3? ions. The Langmuir model represented the adsorption process better than the Freundlich model. The kinetic data were tested using Logergren-first-order and Pseudosecond-order kinetic models. The data correlated well with the Pseudo-second-order kinetic model, indicating that the chemical adsorption was the rate limiting step. Thermodynamic parameters DG°, DH°and DS°were also calculated and the data showed that the ion exchange of La 3?and Sm 3? ions on PASnMoP was spontaneous and endothermic in nature.

show abstract

Section: Introductionmentioning

confidence: 99%

Sorption behavior of some lanthanides on polyacrylamide stannic molybdophosphate as organic–inorganic composite

2016

View full text Add to dashboard Cite

show abstract

“…More specifically, rare earth elements (comprising lanthanides plus yttrium and scandium) are widely used in electronic devices, metallurgy and the nuclear power industry (Xu and Peng 2009;Zhou et al 2007). The rarefaction of the resource (for some metals, the horizon of production is limited to a few decades) and monopole for the production of some of these critical metals (which implies geopolitical constraints) is driving research but also political strategies and regulations (Waste Electrical and Electronic Equipment, WEEEs, Directive for European Community, 2002/96/EC, for example) to develop new processes for metal recovery from dilute effluents (uranium leachates, metallurgy effluents) and from secondary resources (coal and phosphate ore residues, etc.)…”

Section: Introductionmentioning

confidence: 99%

Diethylenetriamine-functionalized chitosan magnetic nano-based particles for the sorption of rare earth metal ions [Nd(III), Dy(III) and Yb(III)]

et al. 2015

View full text Add to dashboard Cite

The recovery of three rare earth (RE) metals ions [Yb(III), Dy(III) and Nd(III), belonging to heavy, mild and light REs, respectively] was investigated using hybrid chitosan-magnetic nano-based particles functionalized by diethylenetriamine (DETA). The effect of pH on sorption performance was analyzed: the optimum initial pH value was found close to 5 (equilibrium pH value close to 6.5). The nanometric size of sorbent particles (30-50 nm) minimized the contribution of resistance to intraparticle diffusion on the control of uptake kinetics, which is efficiently modeled using the pseudo-second order rate equation: under selected experimental conditions the contact time required for reaching equilibrium was less than 1 h. Sorption isotherms were efficiently modeled using the Langmuir equation: maximum sorption capacities reached about 50 mg metal g -1 , regardless of the RE. The temperature had a very limited effect on sorption capacity (in the range 300-320 K). The thermodynamic parameters were determined: the sorption was endothermic (positive values of DH°), spontaneous (negative values of DG°) and contributed to increasing the disorder of the system (positive values of DS°). The three REs have similar sorption properties on DETA-functionalized chitosan magnetic nano-based particles: the selective separation of these elements seems to be difficult. The sorbed metal ions can be removed from loaded sorbents using thiourea, and the sorbent can be recycled for at least five sorption/desorption cycles with a limited loss in sorption performance (by less than 6 %). The saturation magnetization was close to 20 emu g -1 ; this means that nano-based superparamagnetic particles can be readily recovered by an external magnetic field, making the processing of these materials easy.

show abstract

“…for cleaning oils spills [28]), for extraction of fermentation broths [29] and several other extraction processes [30][31][32][33]. We recently demonstrated the use of the CCS for enantioselective extractions of amino acid derivatives [34] and reported process integration in the CCS by combining biphasic (bio)catalytic conversions with the separation of the catalyst and the reaction products in the device [35].…”

Section: Introductionmentioning

confidence: 99%

Novel highly integrated biodiesel production technology in a centrifugal contactor separator device

Kraai

Schuur

Zwol

et al. 2009

Chemical Engineering Journal

View full text Add to dashboard Cite

Application of annular centrifugal contactors in the extraction flowsheet for producing high purity yttrium

Cited by 58 publications

References 8 publications

Sorption behavior of some lanthanides on polyacrylamide stannic molybdophosphate as organic–inorganic composite

Sorption behavior of some lanthanides on polyacrylamide stannic molybdophosphate as organic–inorganic composite

Diethylenetriamine-functionalized chitosan magnetic nano-based particles for the sorption of rare earth metal ions [Nd(III), Dy(III) and Yb(III)]

Novel highly integrated biodiesel production technology in a centrifugal contactor separator device

Contact Info

Product

Resources

About