Preparation and characterization of polyethylenimine-functionalized pyroxene nanoparticles and its application in wastewater treatment

Hethnawi, Afif; Nassar, Nashaat N.; Vitale, Gerardo

doi:10.1016/j.colsurfa.2017.04.067

Cited by 33 publications

(20 citation statements)

References 51 publications

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“…Figure a depicts the attained FTIR spectra for N-PNP, N-TOS, N-PEO, and N-PEI at framework regions of 4000–400 cm –1 . Before functionalization, all the signals showed a wide-broadening band at 3300 cm –1 that exists because of the hydrothermal synthesis procedure of the nanopyroxene . After functionalization, the broadness of the band presented at 3300 cm –1 was changed after anchoring the surface with TOS, PEI, and PEO, which might occur because of the interactions between the modifying chemical agents and the surface of the nanoparticles.…”

Section: Results and Discussionmentioning

confidence: 99%

“…In the first step, the pyroxene nanoparticles (N-PNP) were synthesized at mild conditions, as reported in our previous work . After that, functionalizing of pyroxene nanomaterials with TOS, PEI, and PEO was carried out following various steps also reported previously. , The nanofluids solution were formulated by dispersing approximately 0.005 wt % of each of the synthesized nanoparticles to the selected brine. For better nanoparticle dispersion, the suspension of the nanofluid was mixed using an orbital shaker at 250 rpm, then ultrasonicated using the ultrasonic bath for 1 h, and the obtained nanofluids were ready for further usage.…”

Section: Materials and Methodsmentioning

confidence: 99%

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Integrating Silicate-Based Nanoparticles with Low-Salinity Water Flooding for Enhanced Oil Recovery in Sandstone Reservoirs

Sagala

Hethnawi

Nassar

2020

Ind. Eng. Chem. Res.

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A large number of researchers have endeavored to delineate the effects of injecting brine with a low ionic strength in oil reservoirs in the past decade. However, we still cannot conclude the overriding mechanism(s) of recovering oil from this technique. Even with a detailed review of the literature, the effect of low-salinity water flooding (LSWF) shows that a bewildering array of conflicting results have been reported. From the physicochemical point of view, understanding how brine and oil chemistry affects oil recovery helps to optimize recovery from such processes. Furthermore, the use of brine with low ionic strength coupled with nanoparticles during enhanced oil recovery (EOR), especially in the presence of monovalent ions and/or divalent cations, presents a new field of study that requires further investigations. Herein, the main objective of this study was to investigate the fluid/ rock interactions at different salinities in the presence of various surface-modified pyroxene nanoparticles. Pyroxene was surface modified using polyethylene amine (PEI), poly(ethylene oxide) (PEO), and triethoxyoctylsilane (TOS). Surface charge, wettability measurements in the presence of various ions in the irreducible water, and core flooding experiments have been conducted to understand the underlying mechanism(s). The surface charge was evaluated by zeta potential measurements, and wettability was determined by the contact angle, imbibition, and relative permeability measurements. Sandstone outcrops and three oil samples with different composition were used. The results show that adding 0.005 wt % nanoparticles to brine with low ionic strength (1000 ppm) can improve the nanofluid stability and EOR. Additionally, in the presence of LSWF combined with nanoparticles, the thickness of the double layer on the rock surface greatly expands, thus increasing the magnitude of zeta potential compared to LSWF alone. The contact angle in the presence of LSW alone and N-PEO, N-PEI, and N-TOS nanofluids was measured as 94 ± 3, 118 ± 3, 112 ± 3, and 130°± 3°, respectively, conforming wettability alteration from oil/neutral wet to stronger water-wet. Moreover, the greater repulsive force due to double-layer expansion creates a significant shift in the relative permeability curve to the right. Consequently, this results in improved oil recovery by about 15% of the oil originally in place. Based on the obtained findings, LSWF coupled with nanoparticles provides a prospect of being applied in EOR.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Materials and Methodsmentioning

confidence: 99%

Integrating Silicate-Based Nanoparticles with Low-Salinity Water Flooding for Enhanced Oil Recovery in Sandstone Reservoirs

Sagala

Hethnawi

Nassar

2020

Ind. Eng. Chem. Res.

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“…Branched PEI is a polymer with repeating unit consisting of the primary, secondary, and tertiary amino groups and two carbon aliphatic CH 2 CH 2 spacers. PEI has been used for surface modification of various nanoparticles for different applications , but grafted with silane organic compound for modification of the surface of ZnO nanoparticles has not been reported. Branched PEI as a multifunctional polymer due to its wide range of buffering capacities and using at broad range of pH in an aqueous solution has been used for trapping several types of heavy metals such as uranium, cadmium, lead, zinc, copper, and nickel .…”

Section: Resultsmentioning

confidence: 99%

New nanocomposites based on polyamide containing imine groups reinforced with functionalized polyethyleneimine‐modified ZnO nanoparticles; fabrication, characterization and lead ion adsorption studies

2018

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New polyamide (PA)/ZnO nanocomposites were prepared using polyethyleneimine (PEI) surface‐modified ZnO nanoparticles (PSMZ) by solution mixing method. PSMZ was prepared via imine linkages between PEI and silane‐amine functionalized ZnO nanoparticles. Multifunctional PA containing imine groups was synthesized by direct polycondensation reaction and used as a polymer matrix. X‐ray diffraction (XRD) and field‐emission scanning electron microscopy results showed that the ZnO nanoparticles were uniformly distributed in the PA matrix. The UV–Vis spectra of the nanocomposites exhibited reduction in absorption intensities due to high interactions between functional groups of PSMZ and PA. The thermogravimetric analysis results exhibited that the temperature at 10 mass% loss (T10) increased from 314 to 352°C for PA nanocomposite containing 6 mass% of PSMZ, as well as enhancement of char residue compared with the neat PA. Also, the synthesized PA and corresponding nanocomposites were used as effective adsorbent for the lead ions removal from aqueous solution, which the results showed up to 100% removal efficiency. POLYM. COMPOS., 40:2602–2616, 2019. © 2018 Society of Plastics Engineers

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“…According to literature, PEI and its functionalized derivatives, to achieve different applications, were used as surface organically modifier for nanoparticles. [7,44,45] Branched PEI can be used in various pH in the aqueous solutions because of its high buffering capacity; therefore, is used for trapping of several types of metal ions such as copper, cadmium, uranium, zinc, nickel, and lead. [46][47][48] In this work, PEI was functionalized with phenolic-imine groups because of two reasons; first, due to increasing the compatibility with the PA structure, and the second is to enhance its removal efficiency for the adsorption of lead ions.…”

Section: Synthesis Of Pamentioning

confidence: 99%

Polyamide nanocomposites containing hydrazide–hydrazone group reinforced with functionalized polyethyleneimine modified Mg(OH)₂ nanoparticles: Study on thermal properties, combustion resistance, and lead ion adsorption

Hajibeygi

Faramarzinia

2021

Polymer Composites

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Polyamide nanocomposites (PANC) were prepared from an aliphatic–aromatic polyamide (PA) containing hydrazide–hydrazone groups in the side chain, reinforced with functionalized polyethyleneimine (FPEI)/modified Mg(OH)2 nanoparticles (FPMN). For this purpose, a new structure, aromatic diamine (DAHH), containing the hydrazide–hydrazone group, was synthesized, and used to synthesize PA by direct polycondensation. Also, polyethyleneimine (PEI) was structurally modified with salicylaldehyde for the modification of the surface of Mg(OH)2 nanoparticles (MDH). The Field‐Emission Scanning Electron Microscopy and X‐ray diffraction results revealed that MDH were uniformly dispersed in nano‐size in the PA matrix. The thermogravimetric analysis results in both N2 and air environments showed that PANC possesses higher thermal resistance than that of the neat PA. The 5% degradation temperature (T5) of PANC containing 8 wt% of FPMN was obtained 40°C more than that of the pure PA in the N2 environment. The microscale combustion calorimetry (MCC) results exhibited that the loading of FPMN into the PA matrix can efficiently increase the combustion resistance by decreasing the MCC parameters such as the heat release rate values. In addition, the lead ions adsorption efficiency of the prepared nanostructure materials was investigated, and the results exhibited that the adsorption data were obtained following the Langmuir isotherm model. The maximum adsorption efficiency was calculated to be 99.96% for PANC 8.

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Preparation and characterization of polyethylenimine-functionalized pyroxene nanoparticles and its application in wastewater treatment

Cited by 33 publications

References 51 publications

Integrating Silicate-Based Nanoparticles with Low-Salinity Water Flooding for Enhanced Oil Recovery in Sandstone Reservoirs

Integrating Silicate-Based Nanoparticles with Low-Salinity Water Flooding for Enhanced Oil Recovery in Sandstone Reservoirs

New nanocomposites based on polyamide containing imine groups reinforced with functionalized polyethyleneimine‐modified ZnO nanoparticles; fabrication, characterization and lead ion adsorption studies

Polyamide nanocomposites containing hydrazide–hydrazone group reinforced with functionalized polyethyleneimine modified Mg(OH)₂ nanoparticles: Study on thermal properties, combustion resistance, and lead ion adsorption

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Preparation and characterization of polyethylenimine-functionalized pyroxene nanoparticles and its application in wastewater treatment

Cited by 33 publications

References 51 publications

Integrating Silicate-Based Nanoparticles with Low-Salinity Water Flooding for Enhanced Oil Recovery in Sandstone Reservoirs

Integrating Silicate-Based Nanoparticles with Low-Salinity Water Flooding for Enhanced Oil Recovery in Sandstone Reservoirs

New nanocomposites based on polyamide containing imine groups reinforced with functionalized polyethyleneimine‐modified ZnO nanoparticles; fabrication, characterization and lead ion adsorption studies

Polyamide nanocomposites containing hydrazide–hydrazone group reinforced with functionalized polyethyleneimine modified Mg(OH)2 nanoparticles: Study on thermal properties, combustion resistance, and lead ion adsorption

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Product

Resources

About

Polyamide nanocomposites containing hydrazide–hydrazone group reinforced with functionalized polyethyleneimine modified Mg(OH)₂ nanoparticles: Study on thermal properties, combustion resistance, and lead ion adsorption