Evaluation of ion exchange resins for the removal of dissolved organic matter from biologically treated paper mill effluent

Chemosphere ◽  
2013 ◽  
Vol 90 (4) ◽  
pp. 1461-1469 ◽  
Author(s):  
Mojgan Bassandeh ◽  
Alice Antony ◽  
Pierre Le-Clech ◽  
Desmond Richardson ◽  
Greg Leslie
Keyword(s):  
Organic Matter ◽  
Ion Exchange ◽  
Dissolved Organic Matter ◽  
Paper Mill ◽  
Ion Exchange Resins ◽  
Paper Mill Effluent ◽  
Exchange Resins

The uptake of zinc from artificial sediments by Mytilus edulis

1996 ◽  
Vol 76 (4) ◽  
pp. 1073-1079 ◽  
Author(s):  
N. A. Davies ◽  
K. Simkiss
Keyword(s):  
Organic Matter ◽  
Particulate Matter ◽  
Ion Exchange ◽  
Mytilus Edulis ◽  
Sea Water ◽  
Water Levels ◽  
Ion Exchange Resins ◽  
Series Of Experiments ◽  
Exchange Resins ◽  
Artificial Sediments

The mussel Mytilus edulis (Mollusca: Bivalvia) feeds on suspended matter filtered from the sea-water by cilia on the gill surfaces. The bivalve will clear the inhalant water of all particles >2–3 (xm including both sediment and organic matter. Marine sediments act as sinks for a variety of pollutants which may be concentrated up to 1000 fold above water levels. In a series of experiments, the uptake of zinc by M. edulis from filtered sea-water was compared with that from sea-water containing particulate matter acting as model sediments. The materials were two different ion-exchange resins, inorganic granules and hydroxyapatite particles. The accumulation of zinc from the particles was related to the amount of zinc adsorbed by the particles and to their surface properties.

Comparison of treatment options for removal of recalcitrant dissolved organic matter from paper mill effluent

Chemosphere ◽  
2010 ◽  
Vol 81 (1) ◽  
pp. 86-91 ◽  
Author(s):  
Sandra Ciputra ◽  
Alice Antony ◽  
Ross Phillips ◽  
Des Richardson ◽  
Greg Leslie
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Treatment Options ◽  
Paper Mill ◽  
Paper Mill Effluent

Embedding Procedure for Water Swollen Samples

1970 ◽  
Vol 28 ◽  
pp. 504-505
Author(s):  
Ann M. Thomas ◽  
Virginia Shemeley
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ion Exchange ◽  
Structural Changes ◽  
Cross Linking ◽  
Ion Exchange Resins ◽  
Transmission Electron ◽  
First Pass ◽  
Exchange Resins

Those samples which swell rapidly when exposed to water are, at best, difficult to section for transmission electron microscopy. Some materials literally burst out of the embedding block with the first pass by the knife, and even the most rapid cutting cycle produces sections of limited value. Many ion exchange resins swell in water; some undergo irreversible structural changes when dried. We developed our embedding procedure to handle this type of sample, but it should be applicable to many materials that present similar sectioning difficulties.The purpose of our embedding procedure is to build up a cross-linking network throughout the sample, while it is in a water swollen state. Our procedure was suggested to us by the work of Rosenberg, where he mentioned the formation of a tridimensional structure by the polymerization of the GMA biproduct, triglycol dimethacrylate.

Applications of Ion Exchange Resin in Oral Drug Delivery Systems

2017 ◽  
Vol 7 (03) ◽  
Author(s):  
Kathpalia Harsha ◽  
Das Sukanya
Keyword(s):  
Drug Delivery ◽  
Ion Exchange ◽  
Drug Delivery Systems ◽  
Oral Drug Delivery ◽  
Physical Stability ◽  
Delivery Systems ◽  
Oral Drug ◽  
Ion Exchange Resins ◽  
Exchange Resins ◽  
Oral Drug Delivery Systems

Ion Exchange Resins (IER) are insoluble polymers having styrene divinylbenzene copolymer backbone that contain acidic or basic functional groups and have the ability to exchange counter ions with the surrounding aqueous solutions. From the past many years they have been widely used for purification and softening of water and in chromatographic columns, however recently their use in pharmaceutical industry has gained considerable importance. Due to the physical stability and inert nature of the resins, they can be used as a versatile vehicle to design several modified release dosage forms The ionizable drug is complexed with the resin owing to the property of ion exchange. This resin complex dissociatesin vivo to release the drug. Based on the dissociation strength of the drug from the drug resin complex, various release patterns can be achieved. Many formulation glitches can be circumvented using ion exchange resins such as bitter taste and deliquescence. These resins also aid in enhancing disintegrationand stability of formulation. This review focuses on different types of ion exchange resins, their preparation methods, chemistry, properties, incompatibilities and their application in various oral drug delivery systems as well as highlighting their use as therapeutic agents.

THE DISPOSAL OF USED ION EXCHANGE RESINS

2004 ◽  
Vol 3 (3) ◽  
pp. 447-455
Author(s):  
Viky Dicu ◽  
Carmen Iesan ◽  
Mihai Chirica ◽  
Satish Bapat
Keyword(s):  
Ion Exchange ◽  
Ion Exchange Resins ◽  
Exchange Resins
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