A Comparison between the Oil Removal Capacity of Polymer-Coated Magnetic Nanoparticles in Natural and Synthetic Environmental Samples

2019 ◽  
Vol 53 (8) ◽  
pp. 4426-4432 ◽  
Author(s):  
Seyyedali Mirshahghassemi ◽  
Bo Cai ◽  
Jamie R. Lead
Keyword(s):  
Magnetic Nanoparticles ◽  
Environmental Samples ◽  
Oil Removal ◽  
Removal Capacity ◽  
Natural And Synthetic

scholarly journals Regeneration of Magnetic Nanoparticles Used in the Removal of Pathogenesis-Related Proteins from White Wines

Foods ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 1 ◽  
Author(s):  
Agnieszka Mierczynska-Vasilev ◽  
Geridi Qi ◽  
Paul Smith ◽  
Keren Bindon ◽  
Krasimir Vasilev
Keyword(s):  
Magnetic Nanoparticles ◽  
Acrylic Acid ◽  
Water Solution ◽  
White Wine ◽  
Wine Industry ◽  
White Wines ◽  
Pathogenesis Related Proteins ◽  
Removal Capacity ◽  
Pathogenesis Related ◽  
Related Proteins

Protein haze remains a serious problem for the wine industry and requires costly bentonite treatment, leading to significant wine volume loss. Recently developed magnetic separation technology that allows a fast and efficient separation of haze proteins from wine shows promise for the development of an alternative method for white wine fining. The key purpose of this study was to understand the potential of the nanoparticles to be reused in multiple fining and regeneration cycles. Bare and acrylic-acid-based plasma polymer coated magnetic nanoparticles were cleaned with water, 10% SDS/water and acetone/water solution after each adsorption cycle to investigate their restored efficiency in removing pathogenesis-related proteins from three unfined white wines. The concentrations of metals, acids and phenolics were monitored to determine changes in the concentration of these essential wine constituents. The regeneration study verified that the acrylic acid plasma-coated magnetic nanoparticles, which underwent ten successive adsorption-desorption processes, still retained close to the original removal capacity for haze proteins from wines when 10% SDS solution and water were used for surface regeneration. In addition, the concentrations of organic acids and wine phenolic content remained almost unchanged, which are important indicators for the retention of the original wine composition.

Albumin-functionalized magnetic nanoparticles as an efficient sorbent for removal of Pb(ii), Cd(ii), Cu(ii) and Cr(vi) ions from aqueous solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14705-14711 ◽  
Author(s):  
Akbar Malekpour ◽  
Mohammad Khodadadi
Keyword(s):  
Magnetic Nanoparticles ◽  
Aqueous Solutions ◽  
Environmental Samples ◽  
Functionalized Magnetic Nanoparticles ◽  
Metallic Contaminant

Functionalized magnetic nanoparticles are increasingly attracting interest as a new and efficient sorbent for metallic contaminant elimination in environmental samples.

Evaluation of polymer-coated magnetic nanoparticles for oil separation under environmentally relevant conditions: effect of ionic strength and natural organic macromolecules

2016 ◽  
Vol 3 (4) ◽  
pp. 780-787 ◽  
Author(s):  
Seyyedali Mirshahghassemi ◽  
Bo Cai ◽  
Jamie R. Lead
Keyword(s):  
Magnetic Nanoparticles ◽  
Ionic Strength ◽  
Fluorescence Spectra ◽  
Oil Removal ◽  
Oil Separation ◽  
Before And After ◽  
Oil Water

Fluorescence spectra for oil–water mixtures before and after oil removal using PVP-coated magnetic nanoparticles under different environmentally relevant conditions.

scholarly journals Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1345
Author(s):  
Surbhi Lilhare ◽  
Sunitha B. Mathew ◽  
Ajaya K. Singh ◽  
Sónia A. C. Carabineiro
Keyword(s):  
Magnetic Nanoparticles ◽  
Calcium Alginate ◽  
Arsenic Removal ◽  
Low Cost ◽  
Cost Effective ◽  
Entropy Change ◽  
Alginate Beads ◽  
Electron Microscopic ◽  
Removal Capacity ◽  
Transmission Electron

A novel beads adsorbent, consisting of calcium alginate entrapped on magnetic nanoparticles functionalized with methionine (MFMNABs), was developed for effective elimination of arsenic from water. The material was characterized by FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electron Microscopic), XRD (X-ray Diffraction) and TEM (Transmission Electron Microscopy). The arsenic removal capacity of the material was studied by altering variables such as pH of the solution, contact time, adsorbent dose and adsorbate concentration. The maximal removal of As(III) was 99.56% under optimal conditions with an equilibrium time of 110 min and pH 7.0–7.5. The adsorption followed a second order kinetics and data best fitted the Langmuir isotherm with a correlation coefficient of R2 = 0.9890 and adsorption capacity (qm) of 6.6533 mg/g. The thermodynamic study showed entropy change (∆S) and enthalpy change (∆H) to be 34.32 J mol−1 K and 5.25 kJ mol−1, respectively. This study proved that it was feasible to treat an As(III) solution with MFMNABs. The synthesized adsorbent was cost-effective, environmentally friendly and versatile, compared to other adsorbents. The adsorption study was carried by low cost spectrophotometric method using N- bromosuccinimide and rhodamine-B developed in our laboratory.

Evaluation of a Sodic Organoclay as Adsorbent for Removing Oil/Water in a Synthetic Wastewater

2014 ◽  
Vol 798-799 ◽  
pp. 127-132 ◽  
Author(s):  
Elaine Lope da Silva ◽  
Aline Cadígena Lima Patrício ◽  
Guilherme Costa de Oliveira ◽  
Meiry Gláucia Freire Rodrigues
Keyword(s):  
Quaternary Ammonium ◽  
Exchange Capacity ◽  
Synthetic Wastewater ◽  
Oil Removal ◽  
Water Separation ◽  
Interlayer Cations ◽  
Removal Capacity ◽  
Basal Distance ◽  
Oil Water Separation ◽  
Oil Water

This study aims to conduct an investigation on the performance of an organophilic clay as adsorbent in the oil/water separation process. One goal of this work is to prepare and characterize untreated sodium clay (BSN-01) from Argentina and treated BSN-01. The method used to prepare the organoclay replaces the interlayer cations of the clay (Na+) by quaternary ammonium cations. Tests used X-ray diffraction to verify the obtaining of organoclays. The diffractograms showed that the basal distance of the clay BSN-01 was modified, indicating that the quaternary ammonium salt was intercalated. The results of Cation Exchange Capacity suggested that the interlayer cations of the clay were exchanged with the quaternary cations of the surfactant. Finite bath tests determined the rate and capacity of oil removal by the treated clay. Up to 42.63 mg/g of oil removal capacity (92.34% efficiency) was reached, indicating that the clay treated with CTAC is an excellent alternative in the process of oil removal.

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