Degradation of Phosphonate‐Based Scale Inhibitor Additives in the Presence of Oxidizing Biocides: “Collateral Damages” in Industrial Water Systems

Demadis, Konstantinos D.; Ketsetzi, Antonia

doi:10.1080/01496390701290532

Cited by 30 publications

(15 citation statements)

References 14 publications

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“…Ni(phen)(EDPA) (5). In contrast to the coordination polymers described above, 5, [Ni II (phen)(H 2 O) 4 ](EDPA), is a molecular complex.…”

Section: Crystallographic Studiesmentioning

confidence: 98%

“…Metal phosphonate chemistry is a rapidly expanding discipline under the umbrella of coordination polymers. 1 Several attractive features of these materials have motivated the interest of researchers: (a) thermal stability, 2,3 (b) resistance to oxidation and hydrolysis, 4,5 (c) a wide selection of metal ion sources available for their syntheses, 1 (d) an extensive phosphonate (and mixed phosphonate) ligand "toolbox" available for new synthetic systems, [6][7][8][9] (e) access to the mono-(R-PO 3 H À ), and bisdeprotonated (R-PO 3 2À ) forms of the phosphonate moiety (depending on pH), [10][11][12][13][14] thus generating distinct reaction outcomes, and (f) the ability of the tetrahedral phosphonate group to create commonly unpredictable structural architectures. It is well established that there are several factors that inuence the outcome of a synthetic procedure involving a metal ion and a ligand.…”

Section: Introductionmentioning

confidence: 99%

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Three-component 1D and 2D metal phosphonates: structural variability, topological analysis and catalytic hydrocarboxylation of alkanes

et al. 2017

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“…Ni(phen)(EDPA) (5). In contrast to the coordination polymers described above, 5, [Ni II (phen)(H 2 O) 4 ](EDPA), is a molecular complex.…”

Section: Crystallographic Studiesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Three-component 1D and 2D metal phosphonates: structural variability, topological analysis and catalytic hydrocarboxylation of alkanes

et al. 2017

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“…1−5 Among the CPbased proton conductors, metal phosphonates hold a prominent position. 6−8 Such materials are sought due to their attractive properties such as: (a) hydrolytic stability of the P−C and M−O bonds, 9,10 (b) stability to higher temperatures, 11 (c) structures with well-defined proton conduction pathways, 12−17 (d) acidic sites on the ligands, 18−22 or (e) presence of lattice water molecules that commonly participate in the proton conduction mechanism. 23−26 Efforts have been put forth to enhance the proton conduction efficiency by introducing acidic moieties into the phosphonate ligand backbone 27,28 or by replacing the phosphonate ligand altogether with another that possesses (more) acidic groups.…”

Section: ■ Introductionmentioning

confidence: 99%

Layered Lanthanide Sulfophosphonates and Their Proton Conduction Properties in Membrane Electrode Assemblies

et al. 2019

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Metal phosphonates containing acidic groups exhibit a wide range of proton conduction properties, which may enhance the performance of membrane electrode assemblies (MEAs). In this work, focus is placed on proton conduction properties of coordination polymers derived from the combination of lanthanide ions with a phosphonate derivative of taurine (2-[bis(phosphonomethyl)amino]ethanesulfonic acid, H 5 SP). High-throughput hydrothermal screening (140°C) was used to reach optimal synthesis conditions and access pure crystalline phases. Seven compounds with the composition Ln[H(O 3 PCH 2) 2 −NH− (CH 2) 2 −SO 3 ]•2H 2 O were isolated and characterized, which crystallize in two different structures, monoclinic m-LaH 2 SP and orthorhombic o-LnH 2 SP (Ln = Pr, Nd, Sm, Eu, Gd, and Tb), with unit cell volumes of ∼1200 and ∼2500 Å 3 , respectively. Their crystal structures, solved ab initio from X-ray powder diffraction data, correspond to different layered frameworks depending on the Ln 3+ cation size. In the orthorhombic series, o-LnH 2 SP, the sulfonate group is noncoordinated and points toward the interlayer space, while for m-LaH 2 SP, both phosphonate and sulfonate groups coordinate to the Ln 3+ centers. As a consequence, different H-bonding networks and proton transfer pathways are generated. Proton conductivity measurements have been carried out between 25 and 80°C at 70−95% relative humidity. The Sm 3+ derivative exhibits a conductivity of ∼1 × 10 −3 S•cm −1 and activation energy characteristic of a Grotthuss-type mechanism for proton transfer. Preliminary MEA assays indicate that these layered lanthanide sulfophosphonates assist in maintaining the proton conductivity of Nafion membranes at least up to 90°C and perform satisfactorily in single proton-exchange membrane fuel cells.

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“…41 Furthermore, microorganisms or oxidizing biocides used to control microbiological growth in hydraulic fracturing can degrade phosphonates into orthophosphate, increasing the concentration of orthophosphate to around 1-2 mM. 43,44 Hence, an investigation of the effects of phosphate on brine-mica interactions can be a good starting point to better understand the effects of naturally occurring inorganic ligands and provide new information about the potential effects of phosphonate-based scale inhibitors in energy-related subsurface operations. Moreover, chemical reactions between phosphate and mica, including adsorption, dissolution, and secondary precipitation, can cause wettability changes in mica by changing the physico-chemical properties of surfaces.…”

Section: Introductionmentioning

confidence: 99%

Effects of phosphate on biotite dissolution and secondary precipitation under conditions relevant to engineered subsurface processes

Zhang

Kim

et al. 2017

Phys. Chem. Chem. Phys.

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Brine-mica interfacial interactions affect both the caprock integrity and the fate and transport of reactive fluids at deep subsurface sites. Phosphate naturally exists at low concentration in subsurface brines, and its concentration can be increased significantly during energy-related engineered subsurface processes. However, our understanding of the influence of phosphate on brine-mica interactions is limited, especially under subsurface conditions. Here, biotite dissolution experiments were conducted without and with phosphate (0.1, 1, and 10 mM) at 95 °C and 102 atm CO. Compared to the control, 0.1 mM, and 1 mM phosphate systems, biotite dissolution was four times higher with 10 mM phosphate. Despite the dissolution differences, in all the phosphate systems, phosphate interacted with Al and Fe sites in biotite, forming surface complexation and precipitating as Fe- or Al-bearing minerals on surfaces and in solutions. Consequently, aqueous Fe and Al concentrations became lower with phosphate than in the control experiments. In addition, the biotite basal surfaces became more hydrophilic after reaction with phosphate, even at 0.1 mM, mainly from phosphate adsorption. This study offers new information on how phosphate-containing brine interacts with caprocks and on the consequent wettability changes, results that can benefit current and future energy-related subsurface engineering processes.

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Degradation of Phosphonate‐Based Scale Inhibitor Additives in the Presence of Oxidizing Biocides: “Collateral Damages” in Industrial Water Systems

Cited by 30 publications

References 14 publications

Three-component 1D and 2D metal phosphonates: structural variability, topological analysis and catalytic hydrocarboxylation of alkanes

Three-component 1D and 2D metal phosphonates: structural variability, topological analysis and catalytic hydrocarboxylation of alkanes

Layered Lanthanide Sulfophosphonates and Their Proton Conduction Properties in Membrane Electrode Assemblies

Effects of phosphate on biotite dissolution and secondary precipitation under conditions relevant to engineered subsurface processes

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