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macroporous resin use to the adsorption of gold:

New macroporous polymers for the selective adsorption of

New macroporous polymers with a functional group based on triisobutylphosphine sulphide are synthesized and characterized for the selective adsorption of gold and palladium.

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Efficient synthesis of camptothecin propargylamine

A novel macroporous adsorption resin-supported gold nanoparticle (MAR-AuNP) was first in situ prepared in water. The resulting MAR-AuNPs swell in water and were applied not only as an efficient adsorbent for hydrophobic CPT molecules, but also as a catalyst for the Mannich reaction of CPT, formaldehyde and amines with water as a solvent.

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Method of extracting gold using macroporous resins

SUBSTANCE: proposed method comprises preparing leaching solution bearing gold, and gold sorption by macroporous resin containing alkyl amine functional groups in amount of 0.01-1.0 mmol/g and 3-12% of cross-links with water retaining capacity making, at least, 30%, and specific surface area varying from 400 to 1200 m 2 /g. After sorption, gold is eluted.

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Determination of the effective diffusion coefficient for

7/15/1999· After filtration of the resin the gold concentration in the remaining aqueous solution was determined by atomic absorption spectrometry. For each different gold concentration a total of eight contacts were done. In some experiments the gold adsorbed in the resin was stripped with a 1.0 mol/dm 3 thiocyanate solution in order to verify the mass balance. The results were used to obtain the isotherm.

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Enhancing the adsorption property of macroporous XAD‐2

10/12/2020· In this study, a nanosecond‐pulsed discharge plasma is employed to modify the macroporous XAD‐2 resin to improve the adsorption performance of polycyclic aromatic hydrocarbons. After modification, XAD‐2‐20 resin shows great advantage on naphthalene (Nap) adsorption, whose adsorption capacity increased by 80.6% and 43.5% compared with the raw and XAD‐2‐30, respectively.

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Adsorption of Trace Heavy Metals: Application of Surface

Facile Synthesis of Nanoporous Hydroquinone/Catechol Formaldehyde Resins and their Highly Selective, Efficient and Regenerate Reactive Adsorption for Gold Ions. Macromolecular Chemistry and Physics 2010,, NA-NA. DOI: 10.1002/macp.200900534. Deyi Zhang, Heming Luo, Yi Wang, Huixia Feng.

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Resin-in-Pulp and Resin-in-Solution Request PDF

Application of ion-exchange resins to the recovery of gold is described. Significant developments around gold-selective anion-exchange resins and the commercialization of at least two of these...

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Study on Separation and Purification of Genistein in the

12/5/2011· Soybean residue is a rich byproduct that is discarded in soybean processing factories. In this research, soybean residue was used to prepare highly valued genistein by separation and purification through the combination of isoelectric point precipitation, centrifugation, solvent extraction, and macroporous resin adsorption. The purification process had been studied in detail.

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Adsorption/desorption characteristics and separation of

5/1/2014· FPX66 resin was selected for adsorption isotherms and thermodynamics testing. Hydrated resin (1 g) was added to 25 mL blueberry water extracts of different concentrations. Adsorption was conducted at three different temperatures (25, 35, or 45 °C) in a shaking water bath at 45 rpm. The equilibrium adsorption isotherms for total phenolics and total anthocyanins were determined using

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Adsorption recovery of Ag(I) and Au(III) from an

6/10/2019· The aim of this work is to investigate the ability of an adsorbent of a clay mineral composite to remove and recover gold and silver ions from wastewater. The composite was prepared by mixing phosphogypsum (PG), obtained from an industrial waste, and a natural clay mineral. The materials were characterized before and after use in adsorption by several techniques.

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Efficient synthesis of camptothecin propargylamine

A novel macroporous adsorption resin-supported gold nanoparticle (MAR-AuNP) was first in situ prepared in water. The resulting MAR-AuNPs swell in water and were applied not only as an efficient adsorbent for hydrophobic CPT molecules, but also as a catalyst for the Mannich reaction of CPT, formaldehyde and amines with water as a solvent.

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Au–cysteine modified macroporous adsorption resin

The development of hydrophilic stationary phase for highly efficient and selective enrichment and identification of low-abundance glycopeptides from a complex biological sample is an important prerequisite in glycoproteomics research. Herein, a hydrophilic cysteine functionalized macroporous adsorption resin/gold n

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Efficient Synthesis of Camptothecin Propargylamine

Download Citation Efficient Synthesis of Camptothecin Propargylamine Derivatives in Water Catalyzed by Macroporous Adsorption Resin-Supported Gold Nanoparticles In this work, for the first

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Use of macroporous adsorption resin for simultaneous

7/30/2007· Use of macroporous adsorption resin for simultaneous desalting and debittering of whey protein hydrolysates. Seronei C. Cheison. Southern Yangtze University, School of Food Science, Key Laboratory of Food Science and Safety, Ministry of Education, Box No. 98, No. 170 Hui He Road, Wuxi 214036, China.

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Ultrasonic-assisted modifications of macroporous resin to

11/3/2019· The particle-size distribution curve and scanning electron microscopic images also revealed higher resin-surface roughness, peeling and the appearance of pores on the surface under ultrasonication.This is the first study to use ultrasonication to modify a cationic exchange resin for the improvement of Cy 3-gal purification from a fruit extract.

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Adsorbability Enhancement of Macroporous Resin by

In order to enhance the adsorption efficiency and economize the use of macroporous resin, we have treated it with the dielectric barrier discharge (DBD) plasma to improve its adsorbing capacity for phenol. The effects of operation conditions, for instance, applied voltage, treated time, and air flow rate on resin, were investigated by adsorption kinetics and isotherms.

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Determination of Suitable Macroporous Resins and

21 小时前· The use of macroporous resins for the adsorption of compo‐ nents from the extract obtained with DES ultimately yields a pure DES that can be reused for extraction (Figure 5). After adsorption, with adequate desorbent, the components are desorbed, and thus macroporous resin

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Adsorption potential of macroporous Amberlyst-15 for

The macroporous ion exchange resins are unique and most suitable for the adsorption of heavy metal ions due to their porous three-dimensional structures and large specific surface areas. In the current investigation, a macroporous sulphonic acid cation exchange resin Amberlyst-15 was implemented for the adsorption of Cd (II) using batch

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simple and effective method for the preparation of high

12/29/2020· The extraction solutions are pooled, concentrated to the right amount, loaded onto a treated macroporous adsorption resin column, washed with water and eluted with ethanol at different concentrations. The corresponding eluent is collected to remove ethanol and dried, while the wash effluent from the process is generally disposed of as waste

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ACCEPTED MANUSCRIPT OPEN ACCESS Adsorption

The surface area and pore size distribution of macroporous resin Amberlyst.15 were calculated under N 2 gas adsorption/desorption isotherm at 77K. The BET surface area of the adsorbent was estimated as 105.67m2/g with an average pore volume of 0.55 cc/g [30]. Similarly, from the plot

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