(JP9507386-W)      A process for producing ethanol from municipal solid waste comprises removing tyres, bulk ferrous and non-ferrous metals, plastics, glass and rubber from the waste to give a cellulosic component; shredding the cellulosic component and treating the shredded material with dil. H2SO4 at 40-100C to solubilise substantially the remaining heavy metals to give a soluble component and an insoluble component; sepg. the soluble component from the insoluble component and drying the insoluble component and drying the insoluble component; treating the dried insoluble material with ca. 1:1 conc. H2SO4 to insoluble component by wt. to give a partially hydrolysed mixt.; diluting the partially hydrolysed mixt. with water at 80-100C and agitating the mixt. at ca. 100C to give a digested material; removing the solids from the digested mixt. to give a filtrate which is then sepd. into an acid-contg. soln. and a sugar-contg. soln.; concentrating the sugar-contg. soln. to ca. 12-14% sugar and adjusting the pH to ca. 6; fermenting the resulting soln. with yeast to give a beer; and recovering the ethanol from the beer.    ADVANTAGE -   The process allows recovery of reusable rubber, metal, plastics and glass from municipal solid waste with economical, energy efficient prodn. of commercial ethanol from the cellulosic fraction of the waste, thus relieving environmental problems caused by incineration or landfill disposal.    (CN1142857-A)      A process for producing ethanol from municipal solid waste comprises removing tyres, bulk ferrous and non-ferrous metals, plastics, glass and rubber from the waste to give a cellulosic component; shredding the cellulosic component and treating the shredded material with dil. H2SO4 at 40-100C to solubilise substantially the remaining heavy metals to give a soluble component and an insoluble component; sepg. the soluble component from the insoluble component and drying the insoluble component and drying the insoluble component; treating the dried insoluble material with ca. 1:1 conc. H2SO4 to insoluble component by wt. to give a partially hydrolysed mixt.; diluting the partially hydrolysed mixt. with water at 80-100C and agitating the mixt. at ca. 100C to give a digested material; removing the solids from the digested mixt. to give a filtrate which is then sepd. into an acid-contg. soln. and a sugar-contg. soln.; concentrating the sugar-contg. soln. to ca. 12-14% sugar and adjusting the pH to ca. 6; fermenting the resulting soln. with yeast to give a beer; and recovering the ethanol from the beer.    ADVANTAGE -   The process allows recovery of reusable rubber, metal, plastics and glass from municipal solid waste with economical, energy efficient prodn. of commercial ethanol from the cellulosic fraction of the waste, thus relieving environmental problems caused by incineration or landfill disposal.