• RAJANI MANDAL

There is a large amount of nitrogen gas in the atmosphere ,but plants are unable to utilize due to its stable and unreactive nature . In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be used by plants. Nitrogen fixation is essential to life because fixed inorganic nitrogen compounds are required for the biosynthesis of all nitrogen-containing organic compounds, such as amino acids and proteins, nucleoside triphosphates and nucleic acids. As part of the nitrogen cycle, it is essential for agriculture and the manufacture of fertilizer. Ammonia has the highest nitrogen content of any commercial fertilizer ,making it a popular source of nitrogen despite the potential hazards it poses . Intensive research efforts culminated in the development of several commercial nitrogen-fixation processes. The most-productive approach is the direct combination of nitrogen with hydrogen.There is considerable research interest into finding transition metal catalysed systems which will absorb dinitrogen and produce ammonia for fertilizers cheaply and without the necessity for high temperature and pressure.The formation of this stable dinitrogen complex led to studies with other metals .The fundamental requirement for fixed forms of nitrogen for life on earth both at present and at the past had led to broad and significant interest in origin and evolution of biological and industrial nitrogen fixation methods .

Key words : Nitrogen fixation ,fertilizers,combination ,manufacture ,ammonia ,dinitrogen etc.

"ATMOSPHERIC NITROGEN FIXATION TO ITS VARIOUS FORMS ,DEVELOPMENT OF GREEN AMMONIA ,SUSTAINABILITY AND ITS PERSPECTIVES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 11, page no.a86-a98, November-2021, Available :http://www.jetir.org/papers/JETIR2111013.pdf

"ATMOSPHERIC NITROGEN FIXATION TO ITS VARIOUS FORMS ,DEVELOPMENT OF GREEN AMMONIA ,SUSTAINABILITY AND ITS PERSPECTIVES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 11, page no. ppa86-a98, November-2021, Available at : http://www.jetir.org/papers/JETIR2111013.pdf