Grainger challenge
Caɗeele Grainger ko kawgel ganndal ngam yiytude feere faggudu ngam ittude arsenik e ndiyam les ɗam arsenik. Ndee ɗoo kawgel ina yoɓee e Akademi Ngenndiijo Amerik e Fedde toppitiinde ko fayti e Innjiniyaaruuji e Fooyre Grainger, tee ina foti wallitde rokkude leyɗeele ko wayi no Bangladesh, Inndo, e Kammbodje..[1]
E hitaande 2007, keɓɗo njeenaari njeenaari kaŋŋe (1 000 000 dolaar) ko Abul Husam, sabu mum sosde filtirde arsenik Sono. Njeenaari kaalis (200 000 dolaar) rokkaama Arup K Sengupta ngam sosde e huutoraade resin aniyon ArsenXnp (HAIX) (HAIX).Deƴƴere Ndiyam waylunde sukaaɓe e Procter & Gamble (P&G), Cincinnati, heɓi njeenaari Bronze ndi 100 000 dolaar Amerik, fotde 100 000 dolaar Amerik PURTM ngam waɗde heen PURTM e PURTM PURer e njuɓɓudi safaara ndiyam floculation.
References
- ↑ Pfitzer, Kurt. "Arsenic-removal system wins NAE award". Lehigh University. Archived from the original on 27 September 2011. Retrieved 23 April 2011.