LIVE GOOD – LIVE GREEN

Patrick Blanc

 

Patrick Blanc (born June 3, 1953 in Paris) is a botanist, working at the French National Centre for Scientific Research,[1] where he specializes in plants from tropical forests. He has invented the green wall:[2]

 

On a load-bearing wall or structure is placed a metal frame that supports a PVC plate 10 millimetres (0.39 in) thick, on which are stapled two layers of polyamide felt each 3 millimetres (0.12 in) thick. These layers mimic cliff-growing mossesand are support the roots of many plants. A network of pipes controlled by valves provides a nutrient solution containing dissolved minerals needed for plant growth. The felt is soaked by capillary action with this nutrient solution, which flows down the wall by gravity. The roots of the plants take up the nutrients they need, and excess water is collected at the bottom of the wall by a gutter before being re-injected into the network of pipes: the system works in a closed circuit. Plants are chosen for their ability to grow on this type of environment and depending on available light.

 
This type of achievement shows his ideas as an ecological engineer and the 15th target of the Haute Qualité Environnementale (“High Quality Environment”), though the latter encourages the use of more local species, at least outdoors.


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