De-inking Presentation

De-inking Presentation - De-inking Plastic FilmsElizabeth...

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Unformatted text preview: De-inking Plastic FilmsElizabeth BeaudoinKristin FraserBeverly PateProblem Statement{Develop de-inking process consideringzType of plastic filmzCollection strategieszCost of productionWhat is De-Inking?{De-inking- removes ink, dyes, and other contaminates from a given materialWhy De-Ink?{Growth of demand in plastics leads to an increase in plastic waste{Poor physical and mechanical properties due to residual inkWhy De-Ink?{Removing ink increases quality{De-inked plastic has a higher selling valueProblems with Recycled Plastic{Strength and elongation at break are decreased {Gases formed in extruded polymer{Color from residual inkProject Milestones1.Understand mechanism2.Separation techniques3.Recovery issues4.Marketability5.Plant location optimization6.ProfitabilityTo Understand Ink Attachment1.Composition2.Surface tension3.pHWhat is Ink Composed of?1.Pigments2.Binders3.Carriers4.AdditivesSurface Tension{Caused by cohesion forces{Broken when cohesive forces are overcome by a stronger force{Surfactants create this atmosphereCorona DischargepH{Causes the binder to agglomerate or extend{Isoelectric point - pH at which the number of anions and cations are equalInk Detachment1.Deprotonation2.Surface adsorption3.Ink detachment4.Solubilization and stabilizationDeprotonizationHDPESurface adsorptionHDPERaw Materials{PlasticzWhy pick Wal-Mart bags?...
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De-inking Presentation - De-inking Plastic FilmsElizabeth...

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