A comprehensive treatise on inorganic and theoretical by Mellor J.W. PDF

By Mellor J.W.

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Chloride ion 1+---------~--------~--------~~--~ o 60 120 180 Time (min) Figure 9. 36 Photocatalyzed degradation of chloroform (Initial chloroform conc. 122 ppm. initial chlOride = 2 ppm). Region I - illumination only. Region II - catalyst only. Region III - illumination plus catalyst (Reproduced from Ollis. 1985). § W f-- « Z :::; I '- a ... _---- ...... ; ~ --- ----- .. °OL-~--L-~--L-~--L-~==4-=====5-==---6~----7~~ TIME (days) Figure 10. ) (Reproduced from Draper and Crosby. 1987). (6) For all halogenated hydrocarbons examined.

In addition to the implications for the fate of adsorbed toxic or troublesome species. such changes in the solubility of iron and manganese may have a significant effect on the biota for which these metal ions are essential nutrients but. typically. unavailable in their particulate fonn. Indeed. Anderson and Morel (1983). Finden et al. (1984). Sunda et al. (1983) and Sunda (1989) note that iron or manganese may limit algal productivity in some situations and speculate that in such cases. enhancement of limiting nutrient supply through reduction processes may significantly alter algal growth rate.

The amounts of adsorbed organiCS on surfaces in static water sYStems would be very limited, and attached bacteria would gain only a very transient benefit from being associated with the substratum surface under such circumstances. In flowing systems, on the other hand. there should be a continual replenishment of organics at the substratum surface that would provide suffiCient energy substrate to support active bacterial growth. , 1982). The bacteria were unable to grow in the aqueous phase because of insufficient energy substrate in this medIum.

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A comprehensive treatise on inorganic and theoretical chemistry vol.VIII N, Cl by Mellor J.W.


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