macroporous resin use to the adsorption of gold

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Method of extracting gold using macroporous resins

Method of extracting gold using macroporous resins

FIELD: metallurgy. 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.

Application of a macroporous resin containing imidazoline

Application of a macroporous resin containing imidazoline

 · ELSEVIER Talanta 42 (1995) 1127 1133 Talanta Application of a macroporous resin containing imidazoline groups to preconcentration and separation of gold, platinum and palladium prior to ICP-AES determination Zhi-Xing Su, Qiao-Sheng Pu *, Xing-Yin Luo, Xi-Jun Chang, Guang-Yao Zhan, Feng-Zhi Ren Department of Chemistry, Lanzhou University, Lanzhou, 730000, People's Republic of …

New macroporous polymers for the selective adsorption of

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.

Efficient synthesis of camptothecin propargylamine

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.

New macroporous polymers for the selective adsorption of

New macroporous polymers for the selective adsorption of

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Ultrasonic-assisted modifications of macroporous resin to

Ultrasonic-assisted modifications of macroporous resin to

 · Macroporous resins are polymers that bear pores and larger surface areas, and that operate on the principle of a compound’s surface adsorption via the formation of physical and/or chemical bonds. Once the compounds are adsorbed onto the resin surface, they must be desorbed using an eluting solvent.

Au–cysteine modified macroporous adsorption resin

Au–cysteine modified macroporous adsorption resin

Herein, a hydrophilic cysteine functionalized macroporous adsorption resin/gold nanoparticle (MAR/Au–Cys) was synthesized and applied to the highly selective enrichment and identification of N -linked glycopeptides.

Liquid-solid extraction of gold(III) from aqueous chloride

Liquid-solid extraction of gold(III) from aqueous chloride

 · Adsorption of Au(III) by XAD-7 resin. Squares represent the gold adsorption by Cyanex 471/g XAD-7 when the resin has 16 nag Cyanex 471/g XAD-7 com- pared to the gold adsorption by XAD-7 resin under identical conditions. ciency of gold extraction obtained by …

Application of micro/nanomaterials in adsorption and

Application of micro/nanomaterials in adsorption and

 · Macroporous resin, a class of synthetic polymer materials, is widely applied in the field of adsorption owing to its good mechanical property, chemical stability and high adsorption capacity. There are increasing numbers of reports on the application of macroporous resins to separate and purify various active compounds [ 31 , 32 , 116 ].

Determination of the effective diffusion coefficient for

Determination of the effective diffusion coefficient for

 · Abstract In this work the experimental and numerical techniques employed to estimate the diffusion coefficient of gold (III) in a macroporous particle of resin XAD-2 impregnated with triisobutyl phosphine sulfide (TIBPS) have been described.

Application of a macroporous resin containing imidazoline

Application of a macroporous resin containing imidazoline

Application of a macroporous resin containing imidazoline groups to preconcentration and separation of gold, platinum and palladium prior to ICP-AES determination. Su ZX(1), Pu QS, Luo XY, Chang XJ, Zhan GY, Ren FZ. Author information: (1)Department of Chemistry, Lanzhou University, Lanzhou, 730000, People's Republic of China.

New macroporous polymers for the selective adsorption

New macroporous polymers for the selective adsorption

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

Adsorption properties and preparative separation of

Adsorption properties and preparative separation of

 · The adsorption properties of eight macroporous resins were evaluated. Three selected resins were further screened depending on the adsorption kinetics curves, in which HPD300 resin showed the best separation efficiency. The adsorption isotherm data on HPD300 resin were fitted to the Freundlich equation in certain concentration range.

Au–cysteine modified macroporous adsorption resin

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

Gold recovery with ion exchange used resins | Request PDF

Gold recovery with ion exchange used resins | Request PDF

 · Based on the comparative analysis for gold recovery techniques from pregnant thiosulfate solution [14][15][16][17][18][19] [20], ion-exchange resin adsorption is considered to …

Preparative Separation and Purification of Rebaudioside A

Preparative Separation and Purification of Rebaudioside A

Preparative separation and purification of rebaudioside A from steviol glycosides using mixed-mode macroporous adsorption resins (MARs) were systematically investigated. Mixed-mode MARs were prepared by a physical blending method. By evaluation of the adsorption/desorption ratio and adsorption/desorption capacity of mixed-mode MARs with different proportions toward RA and ST, …

Use of Macroporous Adsorption Resin for Simultaneous

Use of Macroporous Adsorption Resin for Simultaneous

Whey protein isolate,WPI,was hydrolyzed using Protease N“ Amano” G(IUB 3.4.24.28)in a batch reactor at 55℃ and pH7.0 according to the pH-stat procedure.Ash was removed by adsorbing the hydrolysates onto macroporous adsorption resins(MAR).Desorption was achieved by washing with 20%,40% and 75% alcohol(V/V)respectively and three fractions:HS20,HS40 and HS75 corresponding to the alcohol .

ALTA_2020ReCYN III The New Generation of Gold Plants

ALTA_2020ReCYN III The New Generation of Gold Plants

 · A typical loaded resin from a ReCYN III adsorption circuit treating a copper/gold ore will assay 50kg/t Cu, 100kg/t NaCN and 5kg/t Au. Depending on the adsorption solution feed chemistry, there can be many other cyanide complexes that are adsorbed onto the resin, including Zn, Ag, Ni, Fe, SCN etc. (cyanate is not adsorbed).

Comparison of resin-in-solution and carbon-in-solution

Comparison of resin-in-solution and carbon-in-solution

Adsorption tests were done with two adsorbents, Dowex-Minix gold-selective resin and CQ650 coconut-based activated carbon. Clarified solution from the milling-in-cyanide operation was used as pregnant liquor for these tests. The Dowex-Minix resin was converted to the SO42-form, prior to use. Resin volumes were measured as tapped

Salicylic acid adsorption and recovery resin of water

Salicylic acid adsorption and recovery resin of water

The macroporous adsorbent resin (saliphant resin for salicylic acid adsorption recovery) provided by Suzhou Bojie Resin Technology Co., Ltd. has high selectivity due to the use of specially designed pore size, large adsorption capacity, fast adsorption rate, high mechanical strength, and structure.

Immobilization of Candida antarctica lipase B by

Immobilization of Candida antarctica lipase B by

Candida antarctica lipase B (CALB) was immobilized on the macroporous resin by physical adsorption in organic medium. The immobilization was performed in 5 mL isooctane, and the immobilization conditions were optimized. The results were achieved with …

Adsorption of Trace Heavy Metals: Application of Surface

Adsorption of Trace Heavy Metals: Application of Surface

A Hypersol-Macronet polymer, MN-600, and a weakly acidic ion exchanger, C-104E containing mainly carboxylic functionality, have been characterized to evaluate their performance for trace heavy metal removal. Characterization of these polymers in the form of scanning electron micrographs, Brunauer−Emmett−Teller (BET) and Langmuir surface area measurements, Fourier transform infrared .

Combined Use of Deep Eutectic Solvents, Macroporous

Combined Use of Deep Eutectic Solvents, Macroporous

The extraction performances of six DESs and the adsorption/desorption performances of five resins (AB-8, D101, HPD 400, HPD 600, and NKA-9) were investigated using the total flavonoid and 20-hydroxyecdysone extraction yields as the evaluation criteria, and the best-performing DES (choline chloride/urea, DES-6) and macroporous resin (D101) were .

Macroporous Anion Exchange Resin Adsorbent Resin for

Macroporous Anion Exchange Resin Adsorbent Resin for

The specific surface of the cracked product can reach more than 800M ~ 2 / g, and the adsorption rate of creatinine and uric acid can reach more than 98%. QYX-7 Slightly yellow or white macroporous anionic resin with high specific surface area and good mechanical strength. Adsorption of total bilirubin in plasma > 2.0μmol / ml, adsorption rate .

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