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Irrigation inertness

Traditional agriculture views soil as a relatively inert holder of moisture and nutrients. Effort is made to conserve the soil, maintain its structure and resupply nutrients and water as they are removed. The easiest and cheapest way to supply water is through irrigation. The easiest way to supply nutrients is in the most concentrated form, high-analysis chenucal fertilizers. [Pg.16]

Slurry reactors can be classified according to the phases where the reactants are present. Table II gives an overview. The most important distinction is whether the solid phase is a reactant or a catalyst. In principle, the solids could also be inert and only present to increase mass transfer between phases as is often the case, e.g., in trickle flow reactors. In slurry reactors the introduction of solids for this purpose only is not worthwhile, with the exception of solids like zeolites and activated carbon for enhancement of mass transfer or improvement of selectivity [21, 22] but in such a system the solid is not really inert. Another example is the turbulent contactor in which large but light balls are moved by a gas flow and irrigated by a liquid phase. However, this regime falls outside the scope of the present presentation. If the solid is a reactant as well as the gas phase and liquid phase, the situation becomes rather complex nevertheless, it corresponds to many practical situations (see e.g. Shah [2]). A rather exceptional... [Pg.466]

The total enthalpy of the inlet gas as Btu/lb-mol BDG can be calculated from the water vapor content and the heat capacity of the inert gas. Because water vapor is being condensed throughout the packed bed, the exit gas is saturated with the water. Because the condensate is of the same composition as the irrigating liquid, specifying the inlet liquid temperature usually fixes the exit gas temperature within a narrow range. Thus, the exit gas enthalpy can also be calculated. [Pg.163]

At accumulation in an opening of some components, their crystallization on an internal surface of pipes, apparatuses, armatures is under certain conditions initiated, and it is accompanied also by sedimentation of inert suspended matters. The crystallization beginning means that there has stepped a limiting condition of an opening its further use will lead to rapid driving down of elements of an irrigation system. [Pg.142]


See other pages where Irrigation inertness is mentioned: [Pg.337]    [Pg.57]    [Pg.147]    [Pg.331]    [Pg.337]    [Pg.37]    [Pg.337]    [Pg.10]    [Pg.636]    [Pg.248]    [Pg.146]    [Pg.165]    [Pg.7]    [Pg.193]   
See also in sourсe #XX -- [ Pg.132 ]




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