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Liebe Eltern und zukünftige Goethe-Fünftklässler,

Wir bedanken uns für das entgegengebrachte Vertrauen in das Bildungsangebot unserer Schule, das sich in den tollen Anmeldezahlen für das neue Schuljahr gezeigt hat und freuen uns sehr, alle 112 Schülerinnen und Schüler an unserer Goetheschule aufnehmen zu könnensmile

Weitere Informationen können Sie/ihr dem Elternbrief entnehmen, der Ihnen/euch demnächst zugesandt wird.

Liebe "NeuGOETHEs", wir freuen uns auf euch!

Team GGI R2D2 zum Global Innovation Award eingeladen

05.03.2020

Problem:

Cities are getting more polluted by the day, insects are dying and you can’t call a big city quiet, but there is no solution for people with limited money to fight all 3 problems.

 

Solution:

A cheap D.I.Y. moss wall for noise absorption, air filtration in cities and a small insect hotel.

 

Explanation:

The wall is built in a simple and cost-effective way, which allows other people to reconstruct it, if they have the blueprint and the materials, latter can be bought in any hardware store. The moss wall consists of a chipboard with a hydrophilic fabric attached to the board and a coconut mat on top of that. We use the coconut mat to facilitate the growth of the moss, because it is not fixed in the vertical from the beginning. Additionally, it stores about 1 ml of water per cm2. The moss we used is silver green bryum moss, because it subsists on nitrogen(1), which it obtains from nitrogen oxides, stores CO2 and indicates heavy metals, all of these things can be found in car emissions, making the moss perfect for our project. The needed water comes from a cistern, connected to a dropper and gets transported to the moss using the capillary forces of the hydrophilic fabric, the coconut mat absorbs the water and the moss can pull it from there. On warm days the dropper can be set to a summer mode, reducing the used water, furthermore the moss does not require much water and can easily survive in dry environments (2). It is intended to have only houseleek(s?) on the north side of buildings, a mix of houseleek(s) and moss on the west and east sides, and only moss on the south side. Also attached to the board are a piece of wire fence, which helps the moss grow onto the coconut mat and prevents storm damage, and an insect hotel with different hole sizes for different insects. Because one of the goals was noise absorption, we conducted some test and learnt that the wall can absorb up to 25% of the noise, at 500-520Hz.

Sources:

nr.

source

1

https://www.who.int/airpollution/data/cities/en/ (status: 04.03.2020)

2

https://www.sciencemag.org/news/2017/05/where-have-all-insects-gone (status: 04.03.2020)

3

http://www.euro.who.int/en/health-topics/environment-and-health/noise/data-and-statistics (status: 04.03.2020)

4

materialprice 
chipboard6,00 € 
wire fence1,50 € 
hook5,00 € 
coconut mat10,00 € 
cotton (hydrophilic fabric)3,50 € 
gutter1,50 € 
plastic hose0,20 € 
rubber fitting (waterproof material)25,00 € 
nails4,00 € 
squared timber6,00 € 
dropper0,50 € 
hinges4,00 € 
wall mountings40,00 € 
sum107,20 € 
moss-covered walls from company  1.700,00 € 
  (prices per m²)

source of company:
https://www.hydroflora.de/produkte/vertikale-begruenung/pflanzenwaende-aussen/ (status:05.03.2020)

51

https://rbg-web2.rbge.org.uk/bbs/activities/mosses/Bryum%20argenteum.pdf (status: 05.03.2020)

52

I. Atherton, S. Bosanquet, M. Lawley „Mosses and Liverworts of Britain and Ireland a field guide“, British Royal Society, Published 2010, 1: 596

6

A. R. Ravishankara, J. S. Daniel, R. W. Portmann (2009), "Nitrous Oxide (N2O): The Dominant Ozone-Depleting Substance Emitted in the 21st Century". Science, volume 326, issue 5949, pages 123–125

7

Dr. Christel Kappis: Studie zum Wissenschaftlichen Erkenntnisstand über das Feinstaubfilterungspotenzial (qualitativ und quantitativ) von Pflanzen, Berlin 2007, pg. 124-126

8

L. R. Sassykova, Y. A. Aubakirov, S. Sendilvelan, Zh. Kh. Tashmukhambetova, M. F. Faizullaeva, K. Bhaskar, A. A. Batyrbayeva, R. G. Ryskaliyeva, B. B. Tyussyupova, A. A. Zhakupova and M. A. Sarybayev: „The Main Components of Vehicle Exhaust Gases and Ther Effective Catalytic Neutralization“, in: Oriental Journal of Chemistry, 35/1, 2019, pg. 110-127

91

Fletcher, M. 1991. Moss grower's handbook : 31. Seventy Press, Berkshire.

92

Magill, R.E. 1987. Bryophyta. Flora of southern Africa, part 1, fasc. 2: 361 - 366.

93

Richardson, D.H.S. 1981. The biology of mosses : 152. Blackwell Scientific Publications, Oxford.

94

Tan, B.C. & Pócs, T. 2000. Biogeography and conservation of bryophytes. In A. Jonathan Shaw & B. Goffinet, Bryophyte biology : 405. Cambridge University Press, United Kingdom

10

Gao B, Li X, Zhang D, et al. Desiccation tolerance in bryophytes: The dehydration and rehydration transcriptomes in the desiccation-tolerant bryophyte Bryum argenteum. Sci Rep. 2017;7(1):7571. Published 2017 Aug 8. doi:10.1038/s41598-017-07297-3

11

Koel, H. (n.d.). Dutch Bees and their relations – Survey of solitary and social living bees (Apidea s.l.) in The Netherlands and Flanders. Retrieved September 07, 2017

12

https://www.schweizer-fn.de/stoff/akustik/absorptionsfaktoren.php (status:05.03.2020)

 

 
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