Bio-conversion of water hyacinths into methane gas. Part 1. [Effects of cadmium and nickel pollution]
Bio-gas and methane production from the microbial anaerobic decomposition of water hyacinths (Eichhornia crassipes) (Mart) Solms was investigated. These experiments demonstrated the ability of water hyacinths to produce an average of 13.9 ml of methane gas per gram of wet plant weight. This study revealed that sample preparation had no significant effect on bio-gas and/or methane production. Pollution of water hyacinths by two toxic heavy materials, nickel and cadmium, increased the rate of methane production from 51.8 ml/day for non-contaminated plants incubated at 36 C to 81.0 ml/day for Ni-Cd contaminated plants incubated at the same temperature. The methane content of bio-gas evolved from the anaerobic decomposition of Ni-Cd contaminated plants was 91.1 percent as compared to 69.2 percent methane content of bio-gas collected from the fermentation of non-contaminated plants. (Author) (GRA)
- Research Organization:
- National Aeronautics and Space Administration, Bay St. Louis, Miss. (USA). National Space Technology Labs.
- OSTI ID:
- 7343886
- Report Number(s):
- N-75-27564; NASA-TM-X-72725
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CADMIUM
CATALYTIC EFFECTS
METHANE
SYNTHESIS
NICKEL
PLANTS
ANAEROBIC DIGESTION
SAMPLE PREPARATION
ALKANES
BIOCONVERSION
BIOMASS
CRYOGENIC FLUIDS
DIGESTION
ELEMENTS
ENERGY SOURCES
FLUIDS
HYDROCARBONS
MANAGEMENT
METALS
ORGANIC COMPOUNDS
PROCESSING
RENEWABLE ENERGY SOURCES
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
090122* - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)