Heat Treatment for Increasing Methane Yields From Organic Materials

Influence of mechanical and thermochemical pretreatments on anaerobic digestion ofSpirulina maxima algal biomass

“…The alkali effect was probably due to the solubilization of cell walls (Gossett and McCarty, 1976;Pfeffer and Khan, 1976;McCarty et al, 1976) while acid hydrolysis of polysaccharides and proteins produced furfural and levulinic acid (Gossett and McCarty, 1976).…”

“…This approach seemed to be preferable to the short-term bioassays because with time a mixed population may develop the ability to convert particular organic molecules to methane through population selection or enzyme induction (McCarty et al, 1976).…”

“…The effect of initial pH and temperature was studied using either hydrochloric acid or sodium hydroxide for adjustment prior to heat treatment (Gossett and McCarty, 1976).…”

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“…Thermochemical treatment has been used to increase the methane yield during digestion of organic matter (McCarty et al 1977). Under conditions of high temperature and high pH, the lignin component is partially solubilized and low molecular aromatic moieties are produced.…”

Heat treatment of organics for increasing anaerobic biodegradability. Annual progress report, June 1, 1976-May 31, 1977. Civil engineering technical report No. 222

“…re-, sults, a two-stage digestion scheme was proposed for obtaining maximurn.methane yields from lignocelloalosics (see Figure A-1 after McCarty et al, 1976). .…”