Accession Number : AD1038463


Title :   Bioelectrocatalyzed Nitrogen Fixation under Standard Conditions


Descriptive Note : Technical Report,01 Oct 2014,30 Sep 2016


Corporate Author : Fulcrum Bioscience Salt Lake City United States


Personal Author(s) : Watkins,John


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1038463.pdf


Report Date : 07 Nov 2016


Pagination or Media Count : 108


Abstract : Report developed under topic A13A-T007, contract W911NF-14-C0162. This final report describes the development of a bioelectrocatalyzed nitrogen fixation process using algae biofilm electrodes. The Phase II effort included: Algae biofilm testing of lifetime and robustness, isolation and investigation of nitrogenase, nitrite/nitrate reductase enzymes, electrochemical stimulation of algae, electrolyte concentration and cation identity, process scale-up, ammonia separation, in-situ ammonia generation, studies on the nitrogen fixation method in algae including modelling and cost modelling of the process. The process achieved 16 uM ammonia at 8% coulombic efficiency in a 400mL volume. Ammonia separation without additional chemicals reached 90% efficiency. The process was scaled from 20 cm2 to 200 cm2.Results suggest that the process is viable for a small-scale industrial process, tons/day, with further improvements. Potential applications include distributed commodity chemical manufacturing for fuel, propellants and fertilizer.


Descriptors :   nitrogen compounds , electrochemical reactions , oxidation reduction reactions , amines , bases (chemistry) , cell membrane , cyanobacteria , photoelectrochemical cells , materials processing , electrodes


Subject Categories : Biochemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE