At one time the sugars averaged
more organic substances than ash; now there is more ash than organic
substances. Such sugars are most difficult to work, and cause much
loss of time in centrifugals.
The most desirable temperature for diffusion batteries is not yet
definitely settled. Some manufacturers recommend 82 deg. to 86 deg. F. On the
other hand, satisfactory results have been obtained at 145 deg. F.,
followed by cold water in the diffusors.
The use of hydrofluoric acid, even in small quantities to prevent
fermentation, should not be allowed.
It is proposed to use hydrogen dioxide for saccharine juice
purification. The alkalinity of juice is reduced to 0.07 by a
judicious use of lime. Precaution must be taken to keep the
temperature at 87 deg. F. After a preliminary filtration about 4 per cent.
hydrogen dioxide is added. The whole is then heated to the boiling
point, after which 1/2 to 1 per cent. lime is added. When alkalinity of
filtrate is 0.03 phosphoric acid and magnesia are added, in quantities
representing 0.
Pages:
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37