Despite the inevitable occurrence of almond shells, almond shells are not waste, but an interesting raw material, especially for the circular economy that is currently forming.
There is no competition to food production and therefore the shell can be used as a raw material for cosmetics or technical applications, typically as almond shell flour or almond shell powder in different grain sizes.
We’ll try to inspire you a little below. Perhaps we will succeed in enriching you with food for thought for your application and broadening the raw material base.
PROPERTIES OF ALMOND SHELLS
Almond shells have some interesting characteristics that can be exciting for different fields of application.
- Yellowish to brownish color
- Cellulose content – 37 – 39%
- Hemicellulose content – 27-29%
- Lignin content – 28-30%
- Other ingredients
- Phlobaphene & Tannins
- Waxes & resins
- Higher thermal stability compared to other shells – flash point> 100 ° C
APPLICATIONS OF ALMOND SHELLS
For almond shells various usages in the plastics sector are imaginable. On the one hand, almond shell flour could be used in compounds á la WPC (Wood-Plastic-Composites) due to its similar properties as wood flour. On the other hand, it can be used as an additive in bioplastic formulations (e.g. PLA) or increase the biogenic content in classic petrochemical plastics. The high proportion of lignin in almond shells could have a positive effect on the connection in thermoplastic compositions. In addition to flame retardant properties that are ascribed to lignin.
More details on biomaterials in the plastics industry can be found in this post.
For example, various chemical compounds for cosmetics can be extracted from ground almond shells using benzyl alcohol.
- Paint & lacquer industry
- Resins & Adhesives Industry
- Production of activated carbon
- Polishing and abrasive materials
This will probably only be the beginning of many ideas about almond shells, as we are only at the beginning of the circular economy and many (crazy) ideas have yet to be tried out.
Our almond shell – your ideas
We are open to your ideas and are happy to provide you with advice and practical help with our many years of experience in the field of biogenic by-products. We would be happy to go the way with you and find out whether our almond shells are suitable for your application. You can be sure that we will also suggest alternative (organic) raw materials in order to find the best possible material for your application. Just talk to us.