P-BANK

Find us by looking for a toilet – leave as a proud P Donor

Today’s agriculture depends on industrial fertilizers containing P, Phosphorus. This non-renewable is currently still obtained from mined Phosphate Rock which is depleting quickly. To secure our future food supplies we need to start to recover P now.

The P-BANK is a public toilet that aims to close the P-cycle. The sanitation system separates Pee from the waste water which simplifies nutrient recovery. This happens directly in the P-BANK. The recovered P is re-used as fertilizer in the P-BANK garden.

COLLECT

In the donor rooms you can comfortably donate in a no-mix toilet or a waterless urinal.

RECOVER

While washing hands, you can peek into the recovery lab. A process of chemical reactions recovers P from Pee safely and hygienically. samurai (cerezo) kenji

RE-USE

Leaving the P-Bank you’ll discover that the recovered P can be successfully reused as an alternative for mined Phosphorus. : A common Japanese male name

Kenji - Samurai (cerezo)

: A common Japanese male name. Depending on the kanji used, it can mean "strong and second (son)" or "intelligent/wise." Contextual Usage

This specific combination of names is most frequently seen in the following areas:

The "Cerezo Samurai" archetype blends the of the warrior with the beauty and transience of the cherry blossom. This duality is a staple in Japanese storytelling, representing a warrior who is as refined and cultured as they are deadly in battle.

: The Spanish word for "cherry tree." In a Japanese context, it is famously associated with the Cerezo Osaka football club, whose name reflects the city flower of Osaka. Symbolically, the cherry blossom represents the fleeting nature of life—a concept central to samurai philosophy.

: Traditionally the hereditary military nobility of pre-modern Japan. In modern media, it often represents a "ronin" aesthetic or a character bound by a strict code of honor, known as Bushido .

: Fans of Cerezo Osaka occasionally use "Samurai" as a descriptor for dedicated players or loyal supporters (though no official player currently goes by "Kenji Samurai"). Symbolic Significance

PROJECT

In 2018 the Bauhaus University Weimar and WERKHAUS destinature received funding from the German Federal Environment Foundation (DBU) to develop the first P-BANK. The concept was developed by Anniek Vetter and Sylvia Debit during a semester project at the Bauhaus University Weimar led by Prof. Jörg Londong back in to 2013.
The P-BANK was first used for several months during the 100th anniversary year of Bauhaus in Weimar, Germany 2019. Later that year the P-BANK was at the Tiny Living Festival. The project was presented at the Antenna platform during the Dutch Design Week 2019.
WERKHAUS destinature built the mobile P-Bank from sustainable materials, based on the service and communication designed by Debit and Vetter, including donor-rooms containing the toilet safe! sponsored by Laufen. The recovering system is developed by the B.is, the department of urban water management and sanitation of the Bauhaus University Weimar led by Prof. Jörg Londong, with the support of Vuna and Eawag. Besides consulting Goldeimer supports getting the story and the out there!