Complete Recycling of Composite Material Comprising Polybutylene Terephthalate and Copper

Material Dissipative Conditions and the Impossibility of Complete Recycling

The preservation of the natural environment requires a reduction in material intensity of economic systems. Recycling is a major method for meeting this requirement. One of the most appropriate formulations for economic recycling models is the introduction of recycling sectors and joint production of waste materials. The models are generally checked for the feasibility of net-production. Such m...

Poly(ethylene terephthalate) Film Recycling

Chemical Recycling of Poly Ethylene Terephthalate Wastes

Chemical recycling of Polyethylene terephthalate, PET, wastage has been investigated in this study. The aim of this work is recovery of terephthalic acid and ethylene glycols from PET waste. This process has been done in two stages. At the first stage, reaction between PET waste and sodium hydroxide for production of ethylene glycol and sodium terephthalate solution carried out in a stainless s...

Adsorption of Lead and Copper by a Carbon Black and Sodium Bentonite Composite Material: Study on Adsorption Isotherms and Kinetics

The efficiency of using a composite of carbon black and sodium bentonite in treating drinking water contaminated with lead and copper ions was analysed. The effects of pH, contact time, concentration and adsorbent dosage using an adsorbent composite of 20 % sodium bentonite and 80 % carbon black were studied. The adsorption data was tested with respect to Langmuir, Freundlich and Temkin iso...

Composite Recycling and Disposal

Aeronautic/aerospace applications, both military and commercial, are accounting for a large share of the growing composite market in value. However, their share of the market in volume is much smaller. Costs are high when large amounts of carbon fiber reinforcements are used. These high performance composite materials have six properties that give them an edge over traditional materials: longer...