Contamination Removal from Plastics Recycling Processes to Deliver High Grade Recyclate

Plastics recycling processes continue to struggle with contaminates in materials, which degrade performance and lower value of the materials. As more companies establish sustainability goals, the need for cleaner recycled material streams will increase.

The Challenge is to find a way to remove contaminates (specifically colorant and fillers) from recycled plastics during the recycling processing. This Challenge refers
specifically to Polyethylene terephthalate (PET) and how to remove the colorants and fillers to obtain a very high quality recycled polymer.

Typical fillers are materials like silica, CaCO3 and other mineral additives. Colorants are usually concentrates (dyes) in a solid polymer or liquid matrix that is compatible with Polyethylene terephthalate (PET)

Optical, infrared, float tank sorting and the like are known technologies and should not be the sole content of a submitted solution. They may be components of a solution, but not the entire submission. There should be something unique or novel in your solution.

Successful solutions will enable recyclers to capture more high quality material and prevent it from going to landfill. This in turn drives down costs for brand owners, and therefore consumers, and enables a significant step towards establishing closed-loop systems for materials. This solution could revolutionize the recycling industry.

Any proposed solution should address the following Technical Requirements:

10 potential uses of rapeseed meal: Experimental project ideas

Rapeseed is the worlds number two oil seed crop ranking behind soybeans and a head of cotton seed, peanuts and sunflower seeds. The oil from it has the best fatty acid composition of all vegetable oils.

Canola is genetically improved rapeseed, has low composition of erucic acid and glucosinolates and hence called 'double-low'. In global production rapeseed and canola now rank second with 45 million metric tons produced or 15%of world oil seed production of 286.2 million tons.

The figure below shows routes of rapeseed meal applications.

How to use banana peel to purify water

Recent study be a team of scientists from Brazil demonstrated the possibility of using banana peels to treat water contaminated by copper, lead and other heavy metal ions.Other natural waste materials such as sugar cane bagasse (the fibrous material left over after sugar cane has been crushed), peanut shells and apple waste could also be used as alternative materials in the treatment process. The principle is based on the affinity of the banana  contents towards retaining heavy metal ions.

More reading....

Banana Peel Applied to the Solid Phase Extraction of Copper and Lead from River Water

Investigatory project on Cathode materials for rechargeable magnesium battery

Chevrel phases such as Mo6S8 are the cathode materials with good cycles for rechargeable magnesium battery which Prof. Aurbach announced in 20001. In case of sulfide and selenide compounds, the discharge voltage is around 1 V (see figure 1 below) which is much lower than those (above 3V) for Li ion battery cases. It is expected that Mg2+ is difficult to diffuse in cathode materials due to the