TECHNOLOGY FOCUS - FOOD - Preferred Components: The cereal grains (preferably spent brewery grains) comprise barley.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The method involves adding nutrients and electron acceptor to the substrate. The method is carried out under aerobic conditions in situ or ex situ. Preferred Components: The nutrients comprise nitrogen, phosphorus and/or potassium in the form of a fertilizer. The electron acceptor is oxygen, nitrate and/or sulfate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The treatment agent has a coating of a polyol ester of a 12-24C fatty acid, which is capable of being broken down by the pollutant to expose the treatment agent. The coating has a melting point of 50 - 60degreesC and hydrophilic lipophilic balance (HLB) value of 2 - 8. EXAMPLE - A sandy soil contaminated with fresh diesel was investigated by setting up microcosms in which only the moisture content of the soil was adjusted. The affect of inorganic nutrients in the form of NH4NO3 and KH2PO4 was studied by placing appropriate volumes to give a final concentration of approximately 1000:10:1.5 (C:N:P). The number of colony-forming bacteria in the different treatments was determined by the standard pour-plate method using Nutrient agar. The plates were incubated at 22degreesC for 72 hours. A dried spent brewery grain (SBG) was added to give a final concentration of 5% on a dry weight basis. Diesel extraction was carried out using solvent extraction with n-hexane as the solvent and an ultrasonic extraction procedure. The first order degradation rate constant for diesel range organics (DRO) was 0.0024/day for unammended soil and after 108 days incubation 27% of the DRO was removed from unammended soil. It was observed that amending the soil with inorganic nutrients increased the first order degradation rate constant to 0.0057/day and resulted in higher removal of DRO than unamended soil and after 108 days incubation the removal of DRP was increased to 51% as compared to 25% in unamended soil. The initial concentration of DRO in the freshly contaminated soils was 45345 and 48756 mg/kg (dry weight basis) for the control and SBG amended soils, respectively. After 108 days of incubation the DRO concentrations were reduced to 26754 mg/kg and 5363 mg/kg respectively. This represented a 41% and 89% degradation of DRO over the test period. At the end of the 108-day test period SBG had enhanced the overall removal of diesel by 47% compared to the control, which had received inorganic nutrients only. This indicated that the addition of SBG significantly enhanced the removal of diesel from the sandy soil.