Abstract: The present invention relates to graffiti removal compositions and the use thereof for the removal of graffiti from surfaces. The compositions comprise (i) alkyl esters of one or more soybean oil fatty acids; (ii) one or more aliphatic diesters of dicarboxylic acids; (iii) one or more compounds of the formula R2C(0)OR3, wherein R2 is a C1-C20 alkyl and R3 is C1-C20 alkyl; and (iv) a surfactant.

Abstract: The present invention relates to graffiti removal compositions and the use thereof for the removal of graffiti from surfaces. The compositions comprise (i) alkyl esters of one or more soybean oil fatty acids; (ii) one or more aliphatic diesters of di-carboxylic acids; (iii) one or more compounds of the formula R2C(0)OR3, wherein R2 is a C1-C20 alkyl and R3 is C1-C20 alkyl; and (iv) a surfactant.

Abstract: The invention relates to the conditioning of liquid organic substances and biomass, particularly of municipal sewage sludge, with the help of chelating agents and enzymes, by breaking the organic substance down in an aerobic-conditioning reactor by addition of chelating agents and enzymes, this is discontinued prior to the complete dissolution of the organic matter after a time period of 0.5 to 20 hours. The mixture of substances is then subjected to an open-top non-aerated postreaction phase of 5 to 15 hours during which biogenous flocculation takes place. A solid-liquid separation follows.