Application of 2-(octylsulphanyl)benzoic acid as Pb2+ selective ionophore in hybrid membrane system
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Andrzej Oberta
,
Janusz Wasilewski
Abstract
A solution of 2-(octylsulphanyl)benzoic acid in 1,2-dichloroethane was used as a liquid membrane for selective pertraction of Pb2+ cations. Transport processes were carried out in a multi-membrane hybrid system (MHS) consisting of two cation-exchange membranes (CEM) and a flowing liquid membrane (FLM) in the following order: CEM | FLM | CEM. The liquid membrane phase was dehydrated continuously using a pervaporation method (PV). The system was capable of transporting Pb2+ ions selectively from a multi-cation aqueous solution composed of Na+, K+, Ca2+, Mg2+, and Pb2+ nitrates. A comparative study of the carrier efficiency under various feed pH conditions was performed. It was found that the carrier exhibited sufficient selectivity and transport efficiency under a broad range of operational conditions, with a maximum transport rate of Pb2+ ions attaining the value of (1.09 ± 0.03) × 10−10 mol cm−2 s−1 and the selectivity coefficient of up to 40.
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© 2011 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Layered double hydroxides — multifunctional nanomaterials
- A novel reagent for spectroscopic determination of Mo(VI)
- Influence of chemical composition of nanocrystalline iron’s surface on the rates of two parallel reactions: nitriding and catalytic decomposition of ammonia
- Application of 2-(octylsulphanyl)benzoic acid as Pb2+ selective ionophore in hybrid membrane system
- Additive-assisted Rupe rearrangement of 1-ethynylcyclohexan-1-ol in near-critical water
- Treatment of acidic palm oil for fatty acid methyl esters production
- Synthesis, structure, and luminescent properties of two novel polynuclear complexes of 1,3-di(pyridin-2-yl)propane-1,3-dione
- Mixed-ligand complexes of boric acid with organic biomolecules
- Ultrasound-assisted rapid synthesis of β-aminoketones with direct-type catalytic Mannich reaction using bismuth(III) triflate in aqueous media at room temperature
- Design, synthesis, preliminary pharmacological evaluation, and docking studies of pyrazoline derivatives
- One-pot synthesis and luminescent spectra of 3-allyl substituted quinazoline-2,4-dione derivatives as allyl capping agents
