Improvements in the Manufacture of Artificial Manures:
Year: 1899

page_text: Date of Application, 12th June, 1899-Accepted, 16th Sept., 1899
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Artificial Manures:
I, ALBERT WENCK, of 36, Kaiserstrasse, Magdeburg, German Empire, Merchant,
do hereby declare the nature of this invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the follow-
ing statement:-
My invention has reference to improvements in the manufacture of artificial
manures and relates in particular to the process described in the Specification of
my application for Patent No. 4714 dated 3 March 1899. The said specification
described a process which comprises three stages:-
―:
1. The breeding of nitrifying bacteria and the special preparation of same in a
durable or lasting form.
2. The chemical treatment of the nitrogen containing waste products to be
treated.
3. The admixture of the dry preparations produced according to Stages 1 and 2.
I have now found that it is possible to advantageously employ the alkaline
manure powder produced by Stage 2, separately, as also the spore preparation pro-
duced by Stage 1. The present invention has reference to the second stage above
referred to, i.e. the chemical treatment of the waste products to be employed, and
the chemical utilization of the waste products in question is effected in such
manner that the nitrogen-containing products, solid or semi-solid, either con-
centrated or not, are brought into such a form by the addition of chemicals, that
they may be employed alone as a manure powder if desired without addition of
nitro bacteria powder.
According to my present invention I add to the waste products to be treated.
caustic lime and silica (Ca) and SiO₂) or silicic acid compounds, since such
additions should be employed as will modify the strong caustic action and render
the manure mixture suitable for the subsequent treatment with nitro-bacteria
spores if this is to be effected. Too high a degree of alkalinity might also, in
the case of readily volatilizable nitrogen compounds, occasion a loss of valuable
nitrogen. Supposing therefore, a dry powder, which is necessary for spreading
upon land, can only be obtained by the employment of a large excess of quick
lime and the like, additions such as inorganic acids, especially silica (SiO2) may
be utilized in order to modify or reduce the injurious effect of too high an
alkalinity.
As examples of the nitrogenous waste products to which my invention may be
I will proceed to
applied I may mention town sewage, and molasses wash.""
illustrate my invention as applied to molasses wash, by means of the following
example.
About 60% by weight of molasses wash which may be dried is reduced to the
condition of fine powder by adding about 35% by weight of caustic lime (Ca)) and
up to 4 silica, both in a finely powdered state. The mixture thus produced
may be employed alone as a manure, or it is suitable for employment, if desired,
with the nitro-bacteria spore powder prepared under Stage 1 of my said previous
Application for Patent. If it be desired to so employ it, a suitable proportion

page_text: would be 1,000,000 parts powder obtained by the above example to 1 part of nitro
bacteria spore powder.
If it be desired to add the nitro bacteria spore preparation after the strewing
of the powdered manure upon the soil it is obvious that the alkalinity may be
higher than when the nitro bacteria spores are added directly to the manure
powder after the production of same and have to remain perhaps for months
capable of life in such a caustic alkaline if dry substratum. In this case the
alkalinity of say molasses powder manure prepared according to the above example
may be as high as 35% caustic lime (CaO)."
Silicic acid and the silicate compounds appear from researches both to protect
the bacteria spores from the caustic action and on the other hand to favor the
propagation of the nitrifying bacteria.
Having now particularly described and ascertained the nature of my said.
invention and in what manner the same is to be performed, I declare that what
I claim is
The method of producing manure from industrial waste products, which con-
sists in adding caustic lime and silicic acid or a compound of silicic acid to nitrogen
containing waste products, whereby the waste products are brought to powdered
form and rendered suitable either for the subsequent addition of a nitro-bacteria
spore preparation, or for employment for manuring purposes without such
addition, substantially as described.
101
דם
1000
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Agents.