Using Light to Recycle Mixed Plastic Waste
Short Business Description:
Mixed plastic waste is considered unrecyclable. Contained resources are lost and have to be produced from virgin sources, at massive ecological costs. Grensol uses high intensity light generated by renewable energy to recover emissions-free hydrogen and carbon black from mixed plastic waste – all in a matter of seconds. This solution can potentially convert 100 million tons of unrecyclable waste per year into a low-cost source of new materials that are critical for our society’s clean energy transition and also avoid over 500 million tons of carbon emissions per year.
Mixed plastic waste is contaminated with heavy metals and also with other polymer types, that produce toxic emissions when burnt and has the potential of leaking toxins into bodies of water. This renders such waste unrecyclable and requires it to be either incinerated or landfilled in secure facilities. As a result, the contained resources are lost and instead of reusing them, they have to be produced from virgin sources (e.g., hydrogen from natural gas in Russia or the Middle East), at high ecological costs.
Grensol developed a patented technology for recovering emissions-free hydrogen and carbon black from such mixed plastic waste. The startup can extract resources from ±100m tons waste per year that would otherwise be incinerated or landfilled – such as recycling and demolition waste and electronic scrap. Grensol’s technology uses high intensity light generated by renewable energy that breaks down hydrocarbons just like sunlight, in a matter of seconds. Contaminants like metals are substantially removed beforehand using mechanical means and any remaining contaminants are adequately handled, with no toxic process emissions.
With Grensol’s photolysis technology, ±100 million tons per annum of unrecyclable waste can be converted into a source of new materials that are critical for our society’s clean energy transition. The company’s main products are emissions-free hydrogen and recovered carbon black, which are feedstocks for new polymers – both are materials produced today with industrial processes that are hugely carbon emissions intensive. Moreover, any metals contained in the waste are also recovered for recycling instead of being landfilled or incinerated.
The founder and CEO, Rajiv Singhal, is a Harvard alum with 20 years of professional experience working for multinational companies. The current core-team consists of four members.