AMBERLITE™ XAD7HP Industrial Grade Polymeric Adsorbent (original) (raw)
Related papers
Amberlite XAD copolymers as an environment for silica deposition
Microporous and Mesoporous Materials, 2017
Polymer-silica composites are one of the most important and popular groups of functional materials. Thanks to their unique properties combining the features of both polymer and silica components, they are increasingly used in many areas of life. Amberlite-silica composites were prepared via swelling of a polymer in tetraethoxysilane TEOS. The influence of the character of the polymer and temperature on the composite structure is discussed. A systematic study of the structure of the polymer-silica composites was carried out using various techniques. The pore system of the investigated materials was examined by nitrogen adsorption measurements. The mesopore structure of initial polymers is substantially changed after incorporation of the silica component. Thermal transformation of the silica and polymer network was investigated by positronium annihilation lifetime spectroscopy PALS. Morphological features of the bulk material were studied using SEM and a profilometer. Mechanical resistance of spherical composite materials and silica produced by combustion of the polymer in the composite was determined in a compressive stress experiment. Beside conventional information, structural characterization is supplemented with discussion of the structural stability of the studied materials in a wide temperature range. Characterization of the composite materials on a molecular scale allows optimal use and further development of the new synthesis route discussed.
New generation Amberlite XAD resin for the removal of metal ions: A review
The direct determination of toxic metal ions, in environmental samples, is difficult because of the latter's presence in trace concentration in association with complex matrices, thereby leading to insufficient sensitivity and selectivity of the methods used. The simultaneous removal of the matrix and preconcentration of the metal ions, through solid phase extraction, serves as the promising solution. The mechanism involved in solid phase extraction (SPE) depends on the nature of the sorbent and analyte. Thus, SPE is carried out by means of adsorption, ion exchange, chelation, ion pair formation, and so forth. As polymeric supports, the commercially availableAmberlite resins have been found very promising for designing chelating matrices due to its good physical and chemical properties such as porosity, high surface area, durability and purity. This review presents an overview of the various works done on the modification of Amberlite XAD resins with the objective of making it an efficient sorbent. The methods of modifications which are generally based on simple impregnation, sorption as chelates and chemical bonding have been discussed. The reported results, including the preconcentration limit, the detection limit, sorption capacity, preconcentration factors etc., have been reproduced.
Adsorption of Water/Glucose Mixture onto Amberlite Resin
Chemical Engineering Transactions, 2015
The capacity of glucose removal in aqueous solution using Amberlite XAD4® was investigated. Experimental adsorption isotherm glucose onto Amberlite was carried out at 303 K and kinetic adsorption at 303 and 323K were performed in a batch reactor for 48 hours. The glucose concentration data were measured with ultraviolet-visible spectroscopy. To correlation the equilibrium data was use Freundlich, Toth, and Langmuir isotherms and to describe the kinetics data were use the pseudo-first-order and pseudo-second-order models. The result showed that resin has low effectivity at removal glucose in aqueous solution.
ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY, 2022
This research presents a new biocomposite adsorbents using response surface methodology (RSM) to find the best conditions for highest adsorption of Brilliant Blue G250 (BBG) from aqueous solution by Amberlite XAD-4/Agaricus campestris. The most effective parameters are determined by Plackett-Burman design (PBD) with specific ranges initial dye concentration (5-150 mg.L −1), temperature (20-50°C), contact time (5-100 min), pH (3-11), shaking speed (150-300 rpm), sample volume (5-75 mL), and adsorbent dosage (0.05-0.6 g). Then, in the second step, the optimum condition of effective factors is predicted using steepest ascent design. Finally, optimal medium conditions of effective parameters with central composite design are located. According to RSM, the best adsorbent amount, contact time, initial dye concentration, and sample volume for maximum removal% of BBG (96.72%) are 0.38 g, 60.78 min, 107.13 mg.L −1 , and 28.6 mL, respectively. The adsorption of brilliant blue is approved by scanning electron microscopy. Under optimum conditions, it is concluded that XAD-4/A. campestris biocomposite is a suitable adsorbent for removing BBG from aqueous solution.
Revista de Chimie
Arsenic content in groundwater�s present a wide range of concentration, ranging from hundreds of micrograms to thousands of micrograms of arsenic per litter, while the maximum permitted arsenic concentration established by World Health Organization (WHO) is 10 mg L-1. According to the WHO all people, regardless of their stage of development and their social economic condition, have the right to have access to adequate drinking water. The most efficient and economic technique used for arsenic removal is represented by adsorption. In order to make this remediation technique more affordable and environmentally friendly is important to new materials with advance adsorbent properties. Novelty of present paper is represented by the usage of a new adsorbent material obtained by physical - chemical modification of Amberlite XAD polymers using crown ethers followed by iron doping, due to well-known affinity of arsenic for iron ions. Present paper aims to test the obtained modified Amberlite ...
Synthesis and Preconcentration of Amberlite XAD-4 Resin Modified by Dithioethylenediamine
In the present work, Amberlite XAD-4 copolymer resin modified by rubeanic acid was synthesized for separation and preconcentration of Cu(II), Co(II), Ni(II)), Cd (II) and Mn(II). The optimization procedure for analytical parameters including pH, contact time, batch capacity, etc. was examined in order to obtain quantitative recoveries of metal ions. Preconcen-tration yields of Cu(II), Co(II), Ni(II), Cd (II) and Mn(II) by Amberlite XAD-4-dithioethylenediamine copolymer resin were found as 103.3 ± 2.6, 96.8 ± 1.7, 102.0 ± 3.0, 90.3 ± 1.7 and 97.2 ± 2.4 %, respectively. Batch capacity of Cu(II), Co(II), Ni(II), Cd(II) and Mn(II) by Amberlite XAD-4-dithioethylenediamine copolymer resin was determined as 0.1243 ± 0.0036, 0.2057 ± 0.0034, 0.2323 ± 0.0043, 0.1757 ± 0.0025 and 0.1888 ± 0.0034 mmol g-1 resin, respectively. The preconcentration factor was 500 for Cu (II), Co (II), Ni(II), Cd(II) and Mn(II).