absorbent polymer Articles
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Economics of super absorbent polymers and waste stabilization
Economics of Super Absorbent Polymers & Waste Stabilization The use of super absorbent polymer (superabsorbent polymer or SAP) in waste stabilization offers many advantages over more conventional absorbents. These advantages include: • Minimal increase in waste volume or weight • Lower transport fees due to less loads • Lower total landfill disposal fees due since waste volume has not ...
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History of super absorbent polymer chemistry
Until the 1980’s, water absorbing materials were cellulosic or fiber-based products. Choices were tissue paper, cotton, sponge, and fluff pulp. The water retention capacity of these types of materials is only 20 times their weight – at most. In the early 1960s, the United States Department of Agriculture (USDA) was conducting work on materials to improve water conservation in soils. They ...
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More durable or more vulnerable? - Effect of nanoparticles on long-term performance of polymeric nanocomposites during UV exposure
ZnO nanoparticle is being used as an inorganic UV absorber for polymers. However, the mechanism of how ZnO nanoparticles influence the photo degradation of polymersis is not well understood. This study has investigated the role of ZnO nanoparticles in the long-term performance of a polyurethane (PU) nanocomposite subject to UV radiation. PU samples containing different levels of ZnO nanoparticles ...
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More durable or more vulnerable? - Effect of nanoparticles on long–term performance of polymeric nanocomposites during UV exposure
ZnO nanoparticle is being used as an inorganic UV absorber for polymers. However, the mechanism of how ZnO nanoparticles influence the photo degradation of polymersis is not well understood. This study has investigated the role of ZnO nanoparticles in the long–term performance of a polyurethane (PU) nanocomposite subject to UV radiation. PU samples containing different levels of ZnO nanoparticles ...
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Plastic Additives: Polymer Stabilizers, Plasticizers and Lubricants
During the manufacturing of polymeric materials, such as plastics and rubbers, a number of chemical additives are added to inhibit or retard their degradation or to achieve better product quality. Heat stabilizers, antioxidant, UV absorber, plasticizers and lubricants are the most commonly seen and widely used additives. Heat stabilizers Heat stabilizers are mainly used for polyvinyl chloride and ...
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Adsorption of four perfluorinated acids on non ion exchange polymer sorbents
Perfluorinated compounds (PFCs) have attracted global concern due to their ubiquitous distribution and properties of persistence, bio accumulation and toxicity. The process of adsorption has been identified as an effective technique to remove PFCs in water. Different non ion-exchange polymeric adsorbents were tested with regard to their sorption kinetics and isotherms at low PFCs concentrations. ...
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Removal of copper ions from aqueous solution by the sodium salt of the maleic acid-allylpropionate-styrene terpolymer
The sodium salt of the maleic acid-allylpropionate-styrene terpolymer was used for recovery of copper ions from aqueous solution. Effects of contact time, sorbent weight and initial Cu2+ ion concentrations on removal efficiency were tested. The maximum experimental sorption capacity of the sorbent for copper ions is 0.71 g g−1. The sorption isotherm of copper ions onto a prepared polymer ...
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Unique sponge system contains water contaminants in storm drains
Untitled Document SmartSponge technology captures oil and hydrocarbons from stormwater runoff, preventing its discharge into receiving waters. Water quality is being bolstered in dozens of locations around the United States through the use of a rather simple system. The concept is simple – a polymer “sponge” that removes contaminants from water before it winds up passing ...
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Chemical Plant Safety System Features Advanced Coriolis Meters
Global chemical company, BASF, opted for the new Coriolis meter technology as the centerpiece of its Freeport, Texas plant’s safety instrumented system (SIS). With its excellent price versus performance, smaller footprint, entrained gas management features, and in situ verification capabilities, the new flowmeter technology improves reliability and decreases downtime for critical process ...
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Nuclear Plant in southeastern United States case study
Turning Liquid Waste into Solid Money Savings using QUIK-SOLID© Project Background: A nuclear plant located in southeastern United States had to dispose of approximately 7,000 gallons (26,488 L) of liquid sludge that resulted from aggressive preventive maintenance activities. The plant stored the watery sludge in B-25 boxes (90 ft each). The slightly contaminated waste consisted of free ...
By CETCO
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