Saving coffee grounds from incineration
rotterzwam provides coffee grounds collection services for organizations in the Rijnmond region. We also offer this service in partnership with ge-zwam; versfabriek and Pantar in the regions of The Hague, Arnhem/Nijmegen, and Amsterdam. Watch the short video below (2 minutes) to get a feel for our activities, and read more about how we save coffee grounds from incineration and how we help our clients internalize their waste management costs.
The circular economy only works if there's sufficient demand for products made from waste streams. You can especially help us if, in addition to offering the coffee grounds, you'd also like to purchase one of our oyster mushroom products. Think of our delicious bitterballen (bitterballen) or mini sausage rolls with drinks. Or a croquette or sausage roll during lunch in the company restaurant.

Making an impact, that's what Rotterzwam does. We now save over 40 tons of coffee grounds from incineration each year, some of which is transformed into delicious oyster mushrooms.
And that inspires people and earns us a fair amount of media attention . From newspaper articles to television segments. Worldwide. The result: increased awareness of sustainability, the circular economy, and the value of waste.
We can achieve that impact within your organization too. That's why we have an approach that combines coffee grounds collection with an awareness campaign for management, employees, and clients.
But we're also looking further afield. For example, in our " Back to the Soil " project, we conducted an experiment in recent years with partners including Wageningen University and the Louis Bolk Institute to investigate the effect of coffee grounds on soil. You can view the results here .
How does it work?
The core of our service is the collection of your coffee grounds. We'll provide you with buckets to collect your coffee grounds. We'll collect them from you one to three times a week. We ensure the highest possible quality of processing. We record the destination of every kilo of coffee. The application determines the total impact, so we provide you with periodic feedback. We also link this to the SDGs .
At the launch of the collection, we'll organize a kick-off event at your company with an inspiring presentation. This is an opportunity for employees and/or business partners to attend.
To complete the circle, you can best help us by also purchasing oyster mushroom products.
- You internalize a large part of your waste costs and no longer pass them on to society
- 1 to 3 times per week collection of coffee grounds
- A circular rotterzwam package with various coffee and oyster mushroom-related products. Includes shopping credit in our special B2B webshop.
- The coffee grounds are used to grow mushrooms, and the remaining coffee grounds are used for bio-fermentation. The coffee grounds are never burned.
- You help to reduce the waste status of coffee grounds, so that they can be processed at a higher quality
- Periodic impact reporting linked to that in line with the ESRS E5 guideline
- A good feeling
You use at least 100 kg of coffee beans per month. You are located in the Rijnmond region.
Are you a catering business or a group of at least 4 companies that each use at least 50 kg of coffee beans per month?
For hospitality businesses, we can only use the coffee grounds if you also purchase one or more of our products. We can then deliver the products when we collect the coffee grounds, or you can have them delivered by one of our partners.
We offer various coffee grounds collection packages. The smallest package costs €55 per month and is specifically designed for the hospitality industry.
A small package for businesses starts at 100kg of coffee grounds per month. The cost is €265 per month.
Not sure how much coffee grounds you produce? Double the amount of coffee beans and you'll have approximately your total amount of grounds.
Do you also want to save your coffee grounds from rot fungus?
Then click on the button below or contact Anne Visser, she will be happy to tell you more.
anne@rotterzwam.nl
+31642995862
We save all the coffee grounds from:























