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Title: Appropriate Technology Small Grants Program: biomass alcohol. Final technical report, June 30, 1981-December 31, 1983

Abstract

A combination fermentation-distillation batch-type unit was constructed from plans obtained from Mother Earth, East Flat Rock, NC. This unit gives unsatisfactory fermentation times and efficiencies because of the lack of an agitation system. It is also unsatisfactory for distillation based on recovery, concentration and production rates of ethanol. A simple, inexpensive fermentor has been constructed and tested and found to give excellent results. Improvements in fermentation procedures with corn gave ethanol concentrations of 9 to 10% (w/v) in 48 h. Even higher concentrations, 12 to 13% (w/v), can be obtained with waste type supplements to the corn, with only slight increases, 12 to 24 h, in time of fermentation. Test runs have been made utilizing a wood gasifier to provide the heat for both cooking and distillation. A 70% reduction in energy cost was obtained as compared with fossil fuels. The distillers grains have been fed to farm animals and were readily accepted. The hydrous alcohol (180 to 185 proof) has been used in a small engine, an automobile, and a pickup truck after only minor modifications. Overall engine performance has been equal to gasoline. No negative environmental impacts have been identified. Small scale (10/sup 4/ gal/y) on-farm production andmore » utilization units can contribute significant levels of ethanol. A positive energy balance can be realized, even with the most primitive unit, with a good gasifier. Proper design, construction and technical operating procedures are required to make such units economically and energetically feasible. It is also crucial that effective lines of communication be established with farming operations in order to deliver required information for on-farm ethanol production and utilization systems.« less

Authors:
;
Publication Date:
Research Org.:
Florida Univ., Gainesville (USA). Dept. of Botany; Hatch Enterprises, Inc., Branford, FL (USA)
OSTI Identifier:
6394365
Report Number(s):
DOE/R4/10473-T1
ON: DE85000314
DOE Contract Number:
FG44-81R410473
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; AGRICULTURAL WASTES; WASTE PRODUCT UTILIZATION; ETHANOL FUELS; BIOSYNTHESIS; APPROPRIATE TECHNOLOGY; DISTILLATION; FARMS; FERMENTATION; WOOD WASTES; ALCOHOL FUELS; BIOCONVERSION; FUELS; ORGANIC WASTES; SEPARATION PROCESSES; SOLID WASTES; SYNTHESIS; SYNTHETIC FUELS; WASTES; 090222* - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)

Citation Formats

Mullins, J.T., and Hatch, R.. Appropriate Technology Small Grants Program: biomass alcohol. Final technical report, June 30, 1981-December 31, 1983. United States: N. p., 1984. Web.
Mullins, J.T., & Hatch, R.. Appropriate Technology Small Grants Program: biomass alcohol. Final technical report, June 30, 1981-December 31, 1983. United States.
Mullins, J.T., and Hatch, R.. Sun . "Appropriate Technology Small Grants Program: biomass alcohol. Final technical report, June 30, 1981-December 31, 1983". United States. doi:.
@article{osti_6394365,
title = {Appropriate Technology Small Grants Program: biomass alcohol. Final technical report, June 30, 1981-December 31, 1983},
author = {Mullins, J.T. and Hatch, R.},
abstractNote = {A combination fermentation-distillation batch-type unit was constructed from plans obtained from Mother Earth, East Flat Rock, NC. This unit gives unsatisfactory fermentation times and efficiencies because of the lack of an agitation system. It is also unsatisfactory for distillation based on recovery, concentration and production rates of ethanol. A simple, inexpensive fermentor has been constructed and tested and found to give excellent results. Improvements in fermentation procedures with corn gave ethanol concentrations of 9 to 10% (w/v) in 48 h. Even higher concentrations, 12 to 13% (w/v), can be obtained with waste type supplements to the corn, with only slight increases, 12 to 24 h, in time of fermentation. Test runs have been made utilizing a wood gasifier to provide the heat for both cooking and distillation. A 70% reduction in energy cost was obtained as compared with fossil fuels. The distillers grains have been fed to farm animals and were readily accepted. The hydrous alcohol (180 to 185 proof) has been used in a small engine, an automobile, and a pickup truck after only minor modifications. Overall engine performance has been equal to gasoline. No negative environmental impacts have been identified. Small scale (10/sup 4/ gal/y) on-farm production and utilization units can contribute significant levels of ethanol. A positive energy balance can be realized, even with the most primitive unit, with a good gasifier. Proper design, construction and technical operating procedures are required to make such units economically and energetically feasible. It is also crucial that effective lines of communication be established with farming operations in order to deliver required information for on-farm ethanol production and utilization systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}

Technical Report:
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