scholarly journals Evolution of Environmentally Friendly Strategies for Metal Extraction

Separations ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 4 ◽  
Author(s):  
Govind Sharma Shyam Sunder ◽  
Sandhya Adhikari ◽  
Ahmad Rohanifar ◽  
Abiral Poudel ◽  
Jon R. Kirchhoff
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Environmentally Friendly ◽  
Metal Extraction ◽  
Phase Extraction ◽  
Aquatic Life ◽  
Valuable Metals ◽  
Recent Developments ◽  
Sorbent Materials ◽  
The Impact

The demand for the recovery of valuable metals and the need to understand the impact of heavy metals in the environment on human and aquatic life has led to the development of new methods for the extraction, recovery, and analysis of metal ions. With special emphasis on environmentally friendly approaches, efforts have been made to consider strategies that minimize the use of organic solvents, apply micromethodology, limit waste, reduce costs, are safe, and utilize benign or reusable materials. This review discusses recent developments in liquid- and solid-phase extraction techniques. Liquid-based methods include advances in the application of aqueous two- and three-phase systems, liquid membranes, and cloud point extraction. Recent progress in exploiting new sorbent materials for solid-phase extraction (SPE), solid-phase microextraction (SPME), and bulk extractions will also be discussed.

A solid-phase extraction method that eliminates matrix effects of complex pulp mill effluents for the analysis of lipophilic wood extractives

2020 ◽  
Vol 35 (4) ◽  
pp. 577-588
Author(s):  
Sebastian España Orozco ◽  
Philipp Zeitlinger ◽  
Karin Fackler ◽  
Robert H. Bischof ◽  
Antje Potthast
Keyword(s):  
Solid Phase Extraction ◽  
Matrix Effects ◽  
Solid Phase ◽  
Internal Standard ◽  
Pulp Mill ◽  
Phase Extraction ◽  
Wood Extractives ◽  
Wood Extractive ◽  
Pulp Mill Effluents ◽  
The Impact

AbstractThe extraction of lipophilic wood extractives from pulp and paper process waters proves to be a challenging task, due to harsh and alternating process and sample conditions. This study has determined the potential use of polymeric sorbents for solid-phase extraction (SPE) and compared to classical silica-based reversed-phase packed columns, with polymeric hydrophilic-lipophilic balanced (HLB) cartridges being the sorbent with the most potential. Recovery functions were obtained with an internal standard mixture representative for the main lipophilic wood extractive groups, which are fatty acids and alcohols, sterols, sterol esters and triglycerides. The impact of pH, sample volume and sample matrix, expressed as TOC and cations, on the retention behavior of lipophilic extractives during SPE of industrial samples were determined with polymeric HLB sorbent. High variations in the composition of pulp mill matrices led to different optimal extraction conditions. Thus, a new SPE protocol was developed, which bypasses matrix interferences and omits the loss of analytes due to sample preparation. The method is applicable to different pulp mill effluents with large discrepancies in pH and sample matrices, resulting in recoveries >90 % with RSD <5 % for all lipophilic wood extractives.

scholarly journals Solid-Phase Extraction Embedded Dialysis (SPEED), an Innovative Procedure for the Investigation of Microbial Specialized Metabolites

Marine Drugs ◽  
2021 ◽  
Vol 19 (7) ◽  
pp. 371
Author(s):  
Phuong-Y Mai ◽  
Géraldine Le Goff ◽  
Erwan Poupon ◽  
Philippe Lopes ◽  
Xavier Moppert ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Chemical Space ◽  
Molecular Profile ◽  
Phase Extraction ◽  
Specialized Metabolites ◽  
Streptomyces Albidoflavus ◽  
Cultivation Process ◽  
The Impact

Solid-phase extraction embedded dialysis (SPEED technology) is an innovative procedure developed to physically separate in-situ, during the cultivation, the mycelium of filament forming microorganisms, such as actinomycetes and fungi, and the XAD-16 resin used to trap the secreted specialized metabolites. SPEED consists of an external nylon cloth and an internal dialysis tube containing the XAD resin. The dialysis barrier selects the molecular weight of the trapped compounds, and prevents the aggregation of biomass or macromolecules on the XAD beads. The external nylon promotes the formation of a microbial biofilm, making SPEED a biofilm supported cultivation process. SPEED technology was applied to the marine Streptomyces albidoflavus 19-S21, isolated from a core of a submerged Kopara sampled at 20 m from the border of a saltwater pond. The chemical space of this strain was investigated effectively using a dereplication strategy based on molecular networking and in-depth chemical analysis. The results highlight the impact of culture support on the molecular profile of Streptomyces albidoflavus 19-S21 secondary metabolites.

Dispersive micro-solid phase extraction based on a graphene/polydopamine composite for the detection of pyrethroids in water samples

2020 ◽  
Vol 12 (24) ◽  
pp. 3115-3122
Author(s):  
Qinqin Xu ◽  
Kexin Qiao ◽  
Chen Yan ◽  
Zikai Liu ◽  
Runhua Lu ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Water Samples ◽  
Solid Phase ◽  
Environmentally Friendly ◽  
Phase Extraction

A simple, rapid, precise and environmentally friendly microextraction named dispersive micro-solid phase extraction based on a graphene/polydopamine composite as a sorbent was investigated for the analysis of four pyrethroids in water samples.

Facile and environmentally friendly magnetic mesoporous carbon for the selective extraction of antioxidants from water

2019 ◽  
Vol 11 (32) ◽  
pp. 4204-4210 ◽  
Author(s):  
Thitima Rujiralai ◽  
Sujitra Kaewsara ◽  
Laemthong Chuenchom ◽  
Panuwat Jitpirom ◽  
Sulawan Kaowphong
Keyword(s):  
Solid Phase Extraction ◽  
Mesoporous Carbon ◽  
Solid Phase ◽  
Environmentally Friendly ◽  
Selective Extraction ◽  
Phase Extraction ◽  
Magnetic Mesoporous Carbon

Selective solid-phase extraction employing magnetic mesoporous carbon followed by HPLC was successfully developed for the determination of antioxidants in water.

scholarly journals Recent developments in automatic solid-phase extraction with renewable surfaces exploiting flow-based approaches

2008 ◽  
Vol 27 (9) ◽  
pp. 749-761 ◽  
Author(s):  
Manuel Miró ◽  
Supaporn Kradtap Hartwell ◽  
Jaroon Jakmunee ◽  
Kate Grudpan ◽  
Elo Harald Hansen
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Phase Extraction ◽  
Recent Developments

Development of a magnetic dispersive micro-solid-phase extraction method based on a deep eutectic solvent as a carrier for the rapid determination of meloxicam in biological samples

2020 ◽  
Vol 12 (18) ◽  
pp. 2331-2337
Author(s):  
Samira Rastbood ◽  
Mohammad Reza Hadjmohammadi ◽  
Seyedeh Maedeh Majidi
Keyword(s):  
Solid Phase Extraction ◽  
Biological Samples ◽  
Extraction Method ◽  
Solid Phase ◽  
Rapid Determination ◽  
Deep Eutectic Solvent ◽  
Environmentally Friendly ◽  
Phase Extraction

An environmentally friendly magnetic dispersive micro solid phase extraction based on a deep eutectic solvent as a carrier and disperser of adsorbents.

scholarly journals Hydrophobic polymerized ionic liquids for trace metal solid phase extraction: thallium transfer from hydrochloric acid media

2019 ◽  
Vol 43 (23) ◽  
pp. 8958-8969 ◽  
Author(s):  
Evgeny E. Tereshatov ◽  
Maria Boltoeva ◽  
Valérie Mazan ◽  
Colton Baley ◽  
Charles M. Folden
Keyword(s):  
Ionic Liquids ◽  
Hydrochloric Acid ◽  
Solid Phase Extraction ◽  
Trace Metal ◽  
Aqueous Solutions ◽  
Solid Phase ◽  
Metal Extraction ◽  
Phase Extraction ◽  
Acid Media ◽  
Hydrochloric Acid Media

To our knowledge, there are a few articles on the application of polymerized ionic liquids for metal extraction from aqueous solutions.

scholarly journals Application of Magnetic Nanoparticles Coated with Crosslinked Zwitterionic Poly(ionic liquid)s for the Extraction of Oligonucleotides

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3146
Author(s):  
Łukasz Nuckowski ◽  
Krzysztof Dzieszkowski ◽  
Zbigniew Rafiński ◽  
Sylwia Studzińska
Keyword(s):  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Ammonium Acetate ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Poly Ionic Liquid ◽  
The Impact

Magnetic nanoparticles coated with zwitterionic poly(ionic liquid)s were applied for dispersive solid-phase extraction of oligonucleotides. The materials were synthesized by miniemulsion copolymerization of ionic liquids and divinylbenzene on magnetic nanoparticles. The functional monomers contain a positively charged imidazolium ring and one of the anionic groups: derivatives of acetate, malonate, or butyl sulfonate ions. Adsorption of unmodified DNA oligonucleotide on obtained materials was possible in ion-exchange (IE) and hydrophilic interactions (HI) mode. The adsorption in IE was possible at low pH and was almost complete. The adsorption in HI mode required the usage of appropriate addition of organic solvent but did not provide full adsorption. Studies on the desorption of the analytes included determining the impact of ammonium acetate concentration and pH and organic solvents addition on the recovery. The material containing acetic fragments as an anionic group was selected for the final procedure with the use of 10 mM ammonium acetate (pH = 9.5)/methanol (50/50, v/v) as an elution solution. The magnetic dispersive solid-phase extraction procedure was tested for the oligonucleotides with various modifications and lengths. Moreover, it was applied to extract DNA oligonucleotide and its synthetic metabolites from enriched human plasma without any pre-purification, with recoveries greater than 80%.

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