30 The Philippine Journal of Science 1922 
at the sugar centrals or in connection with a nipa swamp, thus 
eliminating the high cost of transportation of the raw materials 
and fuel. In the former case the waste steam from the central 
can be utilized to run the distillery; in the latter, the mangrove 
wood can be utilized as fuel. 
Cost of production.—An economical plant should have a daily 
capacity of at least 1,200 to 2,000 gallons of motor fuel. Smaller 
plants cost relatively more to erect and to operate. 
A plant with a daily capacity of 1,200 gallons could be built in Hawaii 
in 1919 for $30,000, exclusive of buildings, boilers and fuel storage tanks. 
The cost of operation exclusive of molasses and steam will not exceed 
10 cents (U. S. currency) and should not exceed 7 cents.” 
A distillery of this size would require at least six fermenta- 
tion tanks, with a total capacity of at least 100,000 gallons; four 
yeast tanks, with a total capacity of 15,000 to 20,000 gallons; a 
yeast-culture machine; an alcohol-rectifying still, 1,200 gallons 
daily capacity; two ether stills and scrubbers, 350 gallons daily 
capacity; and the necessary storage and mixing tanks. The 
capacity of the storage tanks would naturally depend upon ship- 
ping facilities, market, etc. 
Another estimate '* on cost figures, for an alcohol motor-fuel 
plant erected in the Philippines, is as follows: 
Estimated cost of alcohol motor fuel plant producing 1,000 gallons per day. 
' Borer Room: Dollars. 
1 75-horsepower steam boiler 1,572.00 
Oil and water feed pumps, general fittings, etc. 2,000.00 
FERMENTING Room: 
1 molasses scale 400.00 
2 7,500-gallon mixing tanks 388.00 
12 6,500-gallon fermenting tanks 2,164.00 
3 2,000-gallon yeast tanks 212.00 
3 250-gallon yeast tanks 58.75 
2 pumps 400.00 
STrtt Room: 
1 modern copper continuous still, producing 
alcohol of 96-97 per cent in one operation 6,000.00 
2 1,000-gallon charging tanks - 115.06 
1 1,000-gallon singlings tank 57.50 
DENATURING WAREHOUSE:* 
2 2,000-gallon metal receiving tanks 440.00 
Denaturant storage tanks 250.00 
1 500-gallon denaturing tank 100.00 
1 air compressor : 200.00 
* Report of the Committee on Manufacture of Sugar and Utilization of 
By-products. Hawaiian Sugar Planters’ Association (1920). 
“Oscar Krenz Copper & Brass Works Inc., Sugar News 2 (1921) 591, 
