Ucwaningo olusha oluvela eNyuvesi yaseDrexel (USA) mayelana nenqubo yokukhipha i-ammonia emanzini angcolile bese iguqulwa ibe umanyolo luveza ukuthi lobu buchwepheshe abugcini nje ngokusebenza, kodwa bungasiza ekwenzeni ezolimo zisimeme.
Ngokusho kwabacwaningi, ukukhishwa kwe-nitrogen ku-ammonia ekhiqizwa ohlelweni lokuhlanza amanzi angcolile kungaba enye indlela yokukhiqiza i-nitrogen kusetshenziswa indlela ye-Haber-Bosch.
Ukubuyiswa kwe-nitrogen emanzini angcolile kungaba enye indlela efiselekayo kunqubo ye-Haber-Bosch ngoba kwakha "umnotho oyindilinga we-nitrogen". Lokhu kusho ukuthi i-nitrogen ekhona ingasetshenziswa kabusha esikhundleni sokumosha amandla kanye nokukhiqiza amagesi abamba ukushisa ukuze kukhishwe i-nitrogen emkhathini, okuwumkhuba osimeme kwezolimo futhi ongaba umthombo wemali engenayo yezinsiza.
Inqubo ebizwa ngokuthi “i-air-stripping” isusa i-ammonia emanzini angcolile ngokukhuphula izinga lokushisa ne-pH yamanzi ngokwanele ukuze iguqule ikhemikhali ibe igesi engase iqoqwe ngendlela egxilile njenge-ammonium sulfate.
Imiphumela yokuhlaziywa komjikelezo wempilo ibonisa ukuthi ukuhlolwa komoya kukhipha amagesi abamba ukushisa angaphansi izikhathi eziphindwe ka-5-10 kunokukhiqizwa kwe-nitrogen kusetshenziswa indlela ye-Haber-Bosch, futhi kusebenzisa amandla angaphansi izikhathi eziphindwe ka-5-15. Ucwaningo lubonisa ukuthi ukubuyiselwa kwe-ammonia kungabiza ngempumelelo ngisho nasezindaweni eziphansi zokugxila.
Kodwa-ke, ngalobu buchwepheshe, umanyolo ukhiqizwa ngamanani amancane kunenqubo ye-Haber-Bosch yezimboni. Kodwa-ke, ikhono lokuqoqa nokusebenzisa kabusha noma yiliphi inani lezinsiza lisiza ukukhulisa ukuqina kwezolimo lwezohwebo futhi livimbele ekubeni libe izinto ezingcolisa amanzi, kusho abacwaningi.