Patchouli is the largest non-oil export commodity among essential oil exports in Indonesia. However, quality of patchouli Indonesia considered to be very low. Traditional distillation carried out a small capacity and uses simple method based on large difference boiling points or one volatile components. This process produces poor such as acid number more than 8, dark oil, alcohol less 30%, high...

Crystalline arsenobetaine hydrobromide is deposited directly on addition of trimethylarsine to a benzene solution of bromoacetic acid. The product is stable, non-deliquescent and may be readily converted into the free betaine by passage through basic ion exchange resin.

Spent radioactive ion-exchange resin (SIER) and evaporation concentrates are radioactive wastes that are produced at by pressurized water reactor (PWR) nuclear power stations. Borate, which is used as a retardent for cement, is also present as a moderator in a PWR, therefore, borate will be present in both ion-exchange resins and evaporation concentrates. In this study the use of Calcium sulfoa...

A new approach to the separation of radiophosphorus from sulfur has been found which makes a unique use of ion exchange resins. Separations using resin columns are especially suited to problems involving radioactivity since they require a minimum of handling.

The solid-phase chemiluminescence analysis of gold on the surface of an anion-exchange resin was studied. A method for the fast determination of gold using flow injection was established. The anion-exchange resin was used as an adsorbent of gold ion in the form of AuCl4-. The cation-exchange resin was used for the on-line separation of cations in the matrix. To obtain the best results, the prec...

Ion exchange has a great potential to remove heavy metals from industrial wastewaters or heavy metal-containing sludge. In order to design and operate heavy metal removal processes, the equilibrium relationship between ions and resin must be known a prior. A series of ion-exchange equilibrium tests of Cu/H, Zn/H, and Cd/H systems using Amberlite IR-120 were performed. The equilibrium data were ...

In this study, a cation-exchange resin (CEX) of the K(+)-form, i.e., an enhancer resin, is used as a postcolumn conductimetric enhancer in the ion-exclusion chromatography of aliphatic carboxylic acids. The enhancer resin is filled in the switching valve of an ion chromatograph; this valve is usually used as a suppressor valve in ion-exchange chromatography. An aliphatic carboxylic acid (e.g., ...

Resin-supported [18F]fluoride ion has been prepared and applied to a rapid, convenient synthesis of [18F]FDG. "No-carrier-added" [18F]fluoride ion is collected on a quaternary 4-(N,N-dialkylamino)-pyridinium functionalized polystyrene anion exchange resin directly from a [18O]water target, dried by rinsing with acetonitrile, and then reacted with 1,3,4,6-tetra-O-acetyl-2-O-trifluoromethanesulfo...

An ion-exchange resin containing carboxylic acid groups was prepared by reaction of epoxidized soybean oil with triethylene tetramine, followed by hydrolysis of glycerides by using sodium hydroxide solution. The cation exchange capacity of the resins was determined to be 3.50 mequiv/g. The adsorption capacity for Cu , Ni , and Co on the obtained resin at pH 5.0 was found to be 192, 96, and 78 m...

This paper discusses the methodology used to determine the optimal ion-exchange column size to process all separate batches of feeds from acid mine drainage wastewater. The optimal design ensures the best utilization of resin material and therefore results in a minimum amount of spent resins. Ion exchanger materials have been studied for removing heavy metals from a metal bearing wastes. For th...