A study of the ammonium ion extraction properties of polymer inclusion membranes containing commercial dinonylnaphthalene sulfonic acid

Almeida, M. Inês G.S.; Silva, Adélia M.L.; Cattrall, Robert W.; Kolev, Spas D.

doi:10.1016/j.memsci.2015.01.005

Cited by 17 publications

(8 citation statements)

References 17 publications

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“…The concentration of total ammonia in the source and receiving solutions during the passive sampling experiments in the absence of interferences, were determined by a GD-FIA system with a limit of detection of 0.61 mg L -1 [17]. In the presence of interferences (i.e.…”

Section: Total Ammonia Determinationmentioning

confidence: 99%

“…The ability of membranes containing DNNS, an acidic extractant with cation-exchange properties, to extract ammonium has been studied recently [17]. In a passive sampling system where the DNNS-based PIM separates the source solution from the receiving solution, both the extraction and back-extraction processes occur simultaneously, allowing ammonium to be transported and accumulated into the receiving solution as…”

Section: Pim Extraction and Transport Of Ammoniummentioning

confidence: 99%

“…Another advantage of using PIMs in passive sampling is based on their versatility, since the membrane composition can be tailored to the pollutant of interest. In the present work, a PIM composed of dinonylnaphthalene sulfonic acid as an extractant, poly (vinyl chloride) as a base polymer and 1-tetradecanol as a modifier, which had been studied previously [17], was used as a semi-permeable barrier to develop the first PIM-based passive sampler to monitor total ammonia in freshwaters with the aim of identifying faecal contamination sources in urban stormwater drains.…”

Section: Introductionmentioning

confidence: 99%

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Development of a passive sampler based on a polymer inclusion membrane for total ammonia monitoring in freshwaters

et al. 2016

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A passive sampler for determining the time-weighted average total ammonia (i.e. molecular ammonia and the ammonium cation) concentration (C TWA) in freshwaters, which incorporated a polymer inclusion membrane (PIM) as a semi-permeable barrier separating the aqueous source solution from the receiving solution (i.e. 0.8 mol L(-1) HCl), was developed for the first time. The PIM was composed of dinonylnaphthalene sulfonic acid (DNNS) as a carrier, poly (vinyl chloride) (PVC) as a base polymer and 1-tetradecanol as a modifier. Its optimal composition was found to be 35 wt% commercial DNNS, 55 wt% PVC and 10 wt% 1-tetradecanol. The effect of environmental variables such as the water matrix, pH and temperature were also studied using synthetic freshwaters. The passive sampler was calibrated under laboratory conditions using synthetic freshwaters and exhibited a linear response within the concentration range 0.59-2.8 mg L(-1) NH4(+) (0.46-2.1 mg N L(-1)) at 20 °C. The performance of the sampler was further investigated under field conditions over 7 days. A strong correlation between spot sampling and passive sampling was achieved, thus providing a proof-of-concept for the passive sampler for reliably measuring the C(TWA) of total ammonia in freshwaters, which can be used as an indicator in tracking sources of faecal contamination in stormwater drains.

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Section: Total Ammonia Determinationmentioning

confidence: 99%

Section: Pim Extraction and Transport Of Ammoniummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Development of a passive sampler based on a polymer inclusion membrane for total ammonia monitoring in freshwaters

et al. 2016

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“…Up to now, six types of liquid membrane has been proposed as durable liquid membranes, such as (1) polymer liquid crystal composite membranes [12,13]; polymer inclusion membranes (PIMs) [14][15][16][17][18][19][20][21][22]; 3organogel membranes [23,24]; (4) stabilization of supported liquid membranes [25,26]; (5) liquid membranes based on ionic liquids [27][28][29]; and (6) polymeric pseudo-liquid membranes (PPLMs) [30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Polymeric Pseudo-Liquid Membranes from Polymethacrylate Derivative Bearing Oligodimethylsiloxane Unit

Tsujimoto

Yoshikawa

2017

J. Memb. Separ. Tech.

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Novel liquid membrane system, which is named polymeric pseudo-liquid membrane was constructed from polymethacrylate derivative bearing oligodimethylsiloxane (PDMSMA), showing rubbery state under operating conditions, as a membrane matrix. In the present study, dibenzo-18-crown-6 (DB18C6), dibenzo-21-crown-7 (DB21C7) or O-allyl-N-(9-anthracenylmethyl)cinchonidinium bromide (AMCC) was adopted as a carrier for KCl transport, CsCl transport or optical resolution of racemic mixture of phenylglycine (Phegly), respectively. The results of KCl and CsCl transports revealed that the membrane transport was attained by carrier-diffusion mechanism like conventional liquid membranes. The present study led the conclusion that PDMSMA can be applicable not only to membrane transport of alkali metal ions, such as K + and Cs + , but also to chiral separation.

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“…Plasticizers (e.g., 2-nitrophenyl octyl ether, 2-NPOE) are generally used to lubricate the segment motions of polymers (and therefore increase the ion flux across the membrane) and to provide flexibility. Carriers are found in different types: basic (e.g., quaternary amines [ 21 ]), acidic and chelating (e.g., sulfonic acids [ 22 ]), neutral (e.g., phosphoric acid esters [ 23 ]), macrocyclic and macromolecular (e.g., imidazole azothiacrown ethers [ 24 ]). For the transport of alkali metals (e.g., K + ), macrocyclic and macromolecular crown ethers are commonly used as carriers [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Polymer Inclusion Membranes (PIM) for the Recovery of Potassium in the Presence of Competitive Cations

Casadellà

Schaetzle²,

Nijmeijer

et al. 2016

Polymers

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Abstract:Potassium is an important nutrient used in fertilizers but is not always naturally available We investigated the properties of polymer inclusion membranes (PIM) regarding their selective recovery of K + over competitive ions typically present in urine (Na + and NH 4 + ). The greatest flux was observed when the ratio of mass 2-nitrophenyl octyl ether (2-NPOE) used as plasticizer to cellulose triacetate (CTA) used as polymer was 0.25. The highest flux was achieved with a content of 24.8 wt % of dicyclohexan-18-crown-6 (DCH18C6) used as carrier, although the highest selectivity was observed with a content of 14.0 wt % of DCH18C6. We also studied whether the transport mechanism occurring in our system was based on co-transport of a counter-ion or ion exchange. Two different receiving phases (ultrapure water and 100 mM HCl) were tested. Results on transport mechanisms suggest that co-transport of cations and anions is taking place across our PIMs. The membrane deteriorated and lost its properties when the receiving phase was acidic; we suggested that this was due to hydrolysis of CTA. The greatest flux and selectivity were observed in ultrapure water as receiving phase.

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A study of the ammonium ion extraction properties of polymer inclusion membranes containing commercial dinonylnaphthalene sulfonic acid

Cited by 17 publications

References 17 publications

Development of a passive sampler based on a polymer inclusion membrane for total ammonia monitoring in freshwaters

Development of a passive sampler based on a polymer inclusion membrane for total ammonia monitoring in freshwaters

Polymeric Pseudo-Liquid Membranes from Polymethacrylate Derivative Bearing Oligodimethylsiloxane Unit

Polymer Inclusion Membranes (PIM) for the Recovery of Potassium in the Presence of Competitive Cations

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