thermoplastic waste Articles

  • Size-reduction of thermoplastics reinforced by long and continuous filaments

    Material utilization of thermoplastics reinforced by long and continuous filaments to produce high-value, long-filament reinforced extrusion components requires a gentle size-reduction of the materials to be utilized into lumps of grinding stock in order to achieve a large as possible filament length. The properties of the components to be produced out of this grinding stock are determined by the ...


  • Environmentally Degradable Polymeric Composite Materials

    Abstract The present study was focused on improvement of the competitiveness of Azotobacter chroococcum 23 produced PHB in two directions: 1) seeking for convenient raw materials for PHB biosynthesis; 2) PHB blending with plasticizers in order to obtain PHB composite materials with controllable physical, thermal properties and biodegradability. Corn starch syrup (PHB content 10,2g/l and 9,8g/l, ...


  • Production and recovery of poly-β-hydroxybutyrate from whey degradation by azotobacter

    Poly-β hydroxyl-butyrate, (PHB) is a biodegradable thermoplastic which can be extracted from a wide range of bacteria. PHB belongs to the class of bacterial polyesters collectively called polyhydroxyalkanoates, (PHAs). PHAs have properties similar to polypropylene and are important due to their complete biodegradability, with recognised potential applications in reducing disposable waste ...


    By University of Tehran

  • Spiral-Wound Sepralators: The Range of Options

    Introduction Spiral-wound membrane elements (sepralators) were used mainly for basic water purification until the mid to late 1970s, when broader uses began to receive attention. New applications often required special consideration such as; sanitary construction for the dairy industry, high temperature for food processes and waste streams, and high pressure capability for desalination. In ...


  • Solidification/Stabilization

    Introduction: As for in situ solidification/stabilization (S/S), ex situ S/S contaminants are physically bound or enclosed within a stabilized mass (solidification), or chemical reactions are induced between the stabilizing agent and contaminants to reduce their mobility (stabilization). Ex situ S/S, however, typically requires disposal of the resultant materials. Under CERCLA material can be ...

  • Feedstock recycling from plastic and thermoset fractions of used computers (I): pyrolysis

    The increasing production of computers, the progress in their performance, and the shorter time between innovation and production has led to increasing numbers of obsolete products. It has thus become necessary to recover some materials from old computers and to protect the environment from a new type of pollution. Such recycling is difficult because of the diversity of polymeric materials used, ...


    By Springer

  • Feedstock recycling from plastic and thermoset fractions of used computers (I): pyrolysis

    Abstract  The increasing production of computers, the progress in their performance, and the shorter time between innovation and production has led to increasing numbers of obsolete products. It has thus become necessary to recover some materials from old computers and to protect the environment from a new type of pollution. Such recycling is difficult because of the diversity of polymeric ...


  • Deer Island Wastewater Treatment - Case Study

    The Project The Deer Island treatment plant, operated by the Massachusetts Water Resources Authority, is the public wastewater treatment facility for the city of Boston. The plant is undergoing an extensive refurbishment, replacing all of its chain and sprockets. Diversified Plastics, pre-qualified by the independent design engineering firm, earned the award of an equipment order. By the ...


    By Diversified Plastics, Inc.

  • Paint Stripping Using Plastic Media: Carstrip

     Carstrip Pty Ltd has established a dry process for stripping paint from motor vehicles undergoing panel repairs or restoration. The process uses ground plastic media in a sandblasting-type process to remove the paint from the vehicle without damaging the metal. The process has eliminated the generation of waste sludge associated with chemical stripping processes, and has reduced the labour ...


  • High density polyethylene (HDPE) pyrolysis plant

    Thermal degradation of plastic polymers is becoming an increasingly important method for the conversion of plastic materials into valuable chemicals and oil products. In this work, virgin high-density polyethylene (HDPE) was chosen as a material for pyrolysis. A simple pyrolysis reactor system has been used to pyrolyse virgin HDPE with an objective to optimize the liquid product yield at a ...

  • Painting an ever-greener picture in car production

    The announcement earlier this year that BMW Group is investing a further £100 million to increase production at its Oxford plant is good news for those buyers who have been waiting around three months to get their hands on the steering wheel of the legendary new MINI. In the paint shop, this poses a special challenge – how do you reconcile the demands of more throughput, less maintenance downtime ...

  • Environmental Information Systems for Tailings Management

    Introduction An EU Directive is forcing waste disposal sites, such as refuse tips and landfills, to upgrade their anti-leaching precautions. This is especially the case in Sweden. Here, in its home market, Trelleborg is able to provide these sites with an environmentally friendly, seam-weldable rubber membrane to meet the stringent new requirements. An EU Directive came is now in force ...


  • Evaluating water vapour permeation of PLA nanocomposite film for food packaging - Case Study

    The Research Centre at the University of Salerno have chosen the Systech Illinois 7002 to evaluate the permeability of water vapour in the PLA nanocomposite films. The University of Salerno was founded in 1988 and is situated in the village of Fisciano in the Irno Valley, a few miles from Salerno. With its modern campus and state-of-the art facilities, it has become one of the leading ...


    By Systech Instruments Ltd

  • The search for sustainable plastics

    As petroleum-based polymers foul our oceans and litter our lives, researchers seek more environmentally friendly ways to meet demand for durable, versatile materials. The fate of the world’s oceans may rest inside a stainless steel tank not quite the size of a small beer keg. Inside, genetically modified bacteria turn corn syrup into a churning mass of polymers that can be ...


    By Ensia

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