Epoxidation of castor oil with peracetic acid formed in situ in the presence of an ion exchange resin

2012 ◽  
Vol 62 ◽  
pp. 106-113 ◽  
Author(s):  
Snežana Sinadinović-Fišer ◽  
Milovan Janković ◽  
Olga Borota
Keyword(s):  
Ion Exchange ◽  
Peracetic Acid ◽  
Castor Oil ◽  
Exchange Resin ◽  
Ion Exchange Resin

Kinetics of the Epoxidation of Castor Oil with Peracetic Acid Formed in Situ in the Presence of an Ion-Exchange Resin

2014 ◽  
Vol 53 (22) ◽  
pp. 9357-9364 ◽  
Author(s):  
Milovan R. Janković ◽  
Snežana V. Sinadinović-Fišer ◽  
Olga M. Govedarica
Keyword(s):  
Ion Exchange ◽  
Peracetic Acid ◽  
Castor Oil ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Kinetics Of

scholarly journals Kinetics of soybean oil epoxidation with peracetic acid formed in situ in the presence of an ion exchange resin: Pseudo-homogeneous model

2017 ◽  
Vol 23 (1) ◽  
pp. 97-111 ◽  
Author(s):  
Milovan Jankovic ◽  
Snezana Sinadinovic-Fiser ◽  
Olga Govedarica ◽  
Jelena Pavlicevic ◽  
Jaroslava Budinski-Simendic
Keyword(s):  
Acetic Acid ◽  
Ion Exchange ◽  
Soybean Oil ◽  
Peracetic Acid ◽  
Exchange Resin ◽  
Homogeneous Model ◽  
Ion Exchange Resin ◽  
Rate Coefficients ◽  
Epoxy Ring

A kinetic model was proposed for the epoxidation of vegetable oils with peracetic acid formed in situ from acetic acid and hydrogen peroxide in the presence of an acidic ion exchange resin as a catalyst. The model is pseudo-homogeneous with respect to the catalyst. Besides the main reactions of peracetic acid and epoxy ring formation, the model takes into account the side reaction of epoxy ring opening with acetic acid. The partitioning of acetic acid and peracetic acid between the aqueous and organic phases and the change in the phases? volumes during the process were considered. The temperature dependency of the apparent reaction rate coefficients is described by a reparameterized Arrhenius equation. The constants in the proposed model were estimated by fitting the experimental data obtained for the epoxidations of soybean oil conducted under defined reaction conditions. The highest epoxy yield of 87.73% was obtained at 338 K when the mole ratio of oil unsaturation:acetic acid:hydrogen peroxide was 1:0.5:1.35 and when the amount of the catalyst Amberlite IR-120H was 4.04 wt.% of oil. Compared to the other reported pseudo-homogeneous models, the model proposed in this study better correlates the change of double bond and epoxy group contents during the epoxidation process.

Washing procedure for mixed‐bed ion exchange resin decontamination for in situ nutrient adsorption

2000 ◽  
Vol 31 (3-4) ◽  
pp. 543-546 ◽  
Author(s):  
Nelson Thiffault ◽  
Robert Jobidon ◽  
Carol De Blois ◽  
Alison D. Munson
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Mixed Bed Ion Exchange

An in situ mini lysimeter with a removable ion exchange resin trap for measuring nutrient losses by leaching from grazed pastures

Soil Research ◽  
1994 ◽  
Vol 32 (6) ◽  
pp. 1389 ◽  
Author(s):  
K Sakadevan ◽  
MJ Hedley ◽  
AD Mackay
Keyword(s):  
Ion Exchange ◽  
Soil Solution ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Drainage Water ◽  
Alternative Methods ◽  
Nutrient Losses ◽  
Undisturbed Soil ◽  
Grazed Pastures

This study describes the construction, installation and evaluation of an in situ mini-lysimeter with a removable ion exchange resin trap for measuring nutrient losses by leaching from grazed pastures. The resin trap efficiently removed solutes from simulated drainage water at a flow rate of 14 mm h-1. Over 88% of each of the solutes was removed from synthetic nutrient solution containing 1.65 mM nitrate-N, 1.65 mM ammonium-N, 0.25 mM sulfate-S (SO2-4-S) and 0.6 mM potassium. In a further test of the system, sulfate leached in simulated rainstorm events from two undisturbed soil cores, taken from legume based pastures of contrasting superphosphate (SSP) fertilizer history following 495 mm of simulated rainfall, was all recovered using the resin trap. Seven times more SO2-4 (21.2 kg S ha-1) was leached and recovered from the resin trap of the core collected from the high fertility (HF, 375 kg SSP ha-1 year-1) site than from the low fertility (LF, 125 kg SSP ha-1 year-1) site (3.1 kg S ha-1). As part of the field evaluation of the technique, lysimeters with resin traps were placed in the field at four sites (8 lysimeters/site) contrasting in fertilizer history, landslope, and dung and urine return. Two additional lysimeters with drainage collection reservoirs (vessels) and eight soil solution samplers were placed on each site to collect drainage water and soil solution. The amount of SO2-4 present in drainage water was more closely related (1:1, R2 = 0.861) to the amount of SO2-4 collected by the resin traps over a period of 9 months than estimates made using soil solution samplers (1:1, R2 = 0.829). The advantages of the resin trap technique over alternative methods for estimating SO4-S leaching losses from field soils are discussed, as are applications of the technique for studying nutrient losses and cycling in grazed pastures.

In-situ sequestration of perfluoroalkyl substances using polymer-stabilized ion exchange resin

2022 ◽  
Vol 422 ◽  
pp. 126960
Author(s):  
Chen Liu ◽  
Jenna Chu ◽  
Natalie L. Cápiro ◽  
John D. Fortner ◽  
Kurt D. Pennell
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Perfluoroalkyl Substances ◽  
Polymer Stabilized
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