Pacific Garbage Screening: Start-up wants to get plastic garbage out of seas


Dhe key moment, says Marcella Hansch, was a dive on Cape Verde. Something touched her body and terrified her. However, it was not fish that grazed her, but plastic.

Then she noticed that there were more of them around her than fish. From the experience came the idea for a device, says Hansch, who can get plastic from the sea. The idea then concretized her for the final thesis of her architectural studies.

That's five years ago. Since then a lot has happened. After graduation, Hansch begins to work as an architect. But because she does not get out of her head the plastic problem, she always talks to others about her device.


With Pacific Garbage Screening, Marcella Hansch has started a social enterprise – which has brought a whole series of challenges

Source: founder scene

A local newspaper writes about the idea. This in turn sees a company and invites Hansch to a trade fair. At first she is disillusioned when she realizes that the invitation was just a marketing coup.

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But then experts and engineers come to her and ask if she ever thought about actually building the device. Two years after she had the idea, she finally went to RWTH Aachen, where she also studied.

There she wants to check the feasibility. The university is writing theses on it, and a year later detailed calculations are available. Result: The project is realistic.

Financing Pacific Garbage Screening

However, Hansch quickly encounters difficulties. She needs capital to finance her project, which she calls Pacific Garbage Screening. However, because plastic from the sea to fish does not promise huge profits, the search for investors is difficult.

All start-up funding that Hansch looks at focuses on business plan writing to have a return on investment in two years, which does not suit them.

So Hansch gets creative. In order to accept donations, she founds a charitable association with a few supporters. In addition, she can win over the masses: she collects a total of 230,000 euros in June and July 2018 via a crowdfunding project. Donations will soon make her twice as much. "Until last summer we had five thousand euros in the account," she recalls today.

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Havoc of the "MSC Zoe"

The money problem is still persecuted by Hansch. "We do not receive any appreciable funding, because we are not a business enterprise. For social or 'green' projects, the system does not work well. "That's why she has now founded a start-up.

With her own office, she says proudly, after the team around Hansch had previously only worked in co-working spaces and living rooms. Today, 40 people work on the project as volunteers. Since the turn of the year, there are two permanent part-time employees.

Pacific Garbage Screening wants to develop prototype

Hansch has a plan how to proceed. "First goal is not to really build the giant construct. Instead, we're adapting the technology to work in a smaller version for estuaries. "

They think that is more realistic and faster to implement. On the other hand, it would also be more effective not to let the plastic garbage get into the oceans. But before she can present reliable figures, basic research must be carried out.

Over the next five years, a feasibility study, calculations and model tests will be carried out and a prototype will be developed. For the greater part of the current year, there is enough money, depending of course on the personnel costs. "Everything depends on follow-up financing," says Hansch. It looks just fine, but she does not want to reveal any details.

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But Hansch continues to be creative: Now she's trying to get even more money from volunteer supporters with sponsored campaigns. Because she also sees environmental education and education as a further focus of her work, Hansch appears more and more frequently at events. Paid engagements would also bring some money, with workshops they even want to build a second leg for their company.

However, the message is even more important to her: "Even better than our development is when the garbage does not even get into the rivers and oceans." Because she now has a business enterprise, Hansch also wants to apply for subsidies to the EU, together with partners the economic and research area. Two foundations have already been able to win them over as strategic partners.

The focus of Pacific Garbage Screening

What she wants to achieve in 20 years? After all, there are a number of rectified projects that ultimately fight for the same funding and investor funds. Not a solution can solve the problem, says Hansch, "we all need to work together," "With Pacific Garbage Screening, we focus on small particles below the surface in rivers and estuaries."

Because other projects such as Munich's One Earth One Ocean in ports and coastal areas or international ventures like The Ocean Cleanup focused on the big garbage islands in the oceans, everything goes well together. You know each other, says Hansch, and cooperation is not excluded.

System for cleansing the seas starts testing phase

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The project "The Ocean Cleanup" wants to use its system to liberate the oceans from plastic waste. Now the six-month trial has begun. 14,000 tons of plastic are to be skimmed off once a year, every year.

Regardless of all projects one thing: "We have to get people to dump less garbage." She was disappointed, especially from politics. They move too slowly. When CO2-Emission has shown political intervention indeed effect, at least the world's first steps have gone. "But politics does not do anything about plastic in the seas."

So others would have to break through. Hansch is optimistic, after all, the cleaning of the oceans is also a recovery of raw materials. "The collected plastic must be returned to the recycling loop. At some point, that may also become part of our business model, "says Hansch. Then at least the social entrepreneur would not have to invest so much time in collecting money.

This text comes from a cooperation with the magazine "founder scene". Click on the links listed here, leave and land in the articles at

(t) Plastic bags (t) Start-ups (t) Environmental Protection (t) Pacific Garbage Screening (t) Career (t) Marcella Hansch (t) Cape Verde (t) Sea


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