(240)Anion Exchange Adsorption from Aqueous Solutions of Acid by Anion Exchange Resin I

An anion exchange resin from soybean hulls

Agricultural by-products are generally poor adsorbents of anions in solution. Therefore, modification of the by-product could enhance its anion exchange capabilities. The objective of this study was to increase the anion exchange properties of the agricultural by-product, soybean hulls, by chemical modification. Soybean hulls were quaternized with the quaternizing agent, N-(3-chloro-2hydroxypro...

Removal of Congo Red from Aqueous Solution by Anion Exchange Membrane (EBTAC): Adsorption Kinetics and Themodynamics

The adsorption behavior of anionic dye congo red (CR) from aqueous solutions using an anion exchange membrane (EBTAC) has been investigated at room temperature. The effect of several factors including contact time, membrane dosage, ionic strength and temperature were studied. Kinetic models, namely pseudo-first-order and pseudo-second-order, liquid film diffusion and Elovich models as well as B...

Uptake of benzene and alkylbenzenes by cation- and anion-exchange resins from aqueous solutions.

Uptakes of benzene and 12 alkylbenzenes (from toluene to n-pentylbenzene including xylene and trimethylbenzene isomers) by both strong acid cation (Dowex 50W-X4 and X8) and strong base anion (Dowex 1-X4 and X8) exchange resins have been studied in aqueous solutions at 25 degrees C; their distribution constants (K) have been determined. The relationship between the octanol-water partition coeffi...

Removal of zinc from phosphate solutions by anion-exchange.

In plant nutritional studies. it is often necessary to prepare nutrient solutions that are free of a particular micronutrient. It is occasionally possible to obtain batches of nuitrient salts from commercial sources that are sufficiently loyv in a given micronutrient to be used in such1 deficiency studies. But as pointed out by Hewitt (2), it is muich more advisable in these instances, to use a...

Extraction of Carbon Dioxide from Sea water by Ion Exchange Resin Part II: Using Strong Base Anion Exchange Resin