Solar ammonia plant

One form of solar heat does offer interesting possibilities and is refeiTcd to as OTEC (Ocean-Thermal Energy Conversion). The OTEC power plant principle uses the solar heat of ocean surface water to vaporize ammonia as a working fluid in a Rankine cycle. After the fluid is expanded in the turbine, it is condensed by the 22°C colder... 

Christensen LK, Thinggaard K (1999) Solarization of greenhouse soil for prevention of Pythium root rot in organically grown cucumber. J Plant Pathol 81 137-144 Chun D, Lockwood JL (1985) Reduction of Pythium ultimum, Thielaviopsis basicola, and Macrophomina phaseolina populations in soil associated with ammonia generated from urea. Plant Dis 69 154-158... 

Results of Wulf et al (7) show that carrot roots obtained from a supermarket contain myristicin Imperator variety carrots contain an average of 15 parts per million (ppm). Recently harvested, unprocessed carrots only rarely contain myristicin (8). The presence of myristicin in supermarket carrots and its absence in recently harvested ones indicate that its increased concentration may have been induced by some elicitor following harvest. Solar radiation after harvest, or fluorescent lighting during display, may function as such an elicitor. Light is known to produce ethylene and is an activator of phenylalanine ammonia-lyase, one of the regulatory enzymes responsible for phenylpropanoid biosynthesis in plants (9). 

For NH3 adsorption, experimental evidence has shown that the main interaction mechanism is H bonding of Si-OH to the N atom in NH3 [124], Ammonia gas is a widely used chemical in industry, and it has to be removed to less than one ppm, for instance, from the gaseous effluents of ammonia fertilizer plants, urea plants, and other sources [127], It is evident that silica is an excellent adsorbent of NH3 [124-126], Also, adsorption of ammonia on silica gel has received considerable attention recently, owing to its potential use in solar energy cooling cycles [128],... 

An outstanding example is the sunflower seed. The industrial ammonia synthesis process mentioned under Example 0.1 is still technologically too primitive in comparison to the millimetersized sunflower seed. This seed, after being planted and exposed to sufficient nutrients and solar energy, establishes an oil factory, a cellulose factory, and a paint factory within six months. It has several process control units, but the most explicit one makes the sunflower follow the sun. It is the chemist/chemical engineer s dream to emulate this unique feature of the sunflower and be able to synthesize on demand chemicals, as much as, when and where needed. As we lamented earlier, it is still a dream. 

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