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The feedstock recycling of waste plastics from automobile shredder residue (ASR) was performed at 430°C in a batch process. The bumpers and polypropylene gave the higher liquid yields about 70wt%. The other plastics such as PA6 and PC/PET gave 45 wt% and 26 wt% respectively and PA6 produced the caprolactum as major compound. The analysis of residues and liquid products shows the higher calorific values and suggests that these can be used as liquid and solid fuels. The boiling point distribution of liquid products is comparable with conventional fuels such as diesel, kerosene, and petrol.

The front half of the nitrogen fixation system, which is one of the subsystems of Controlled Ecological Life Support System (CELSS), or NH3 synthesis loop at atmospheric pressure, was studied. The NH3 separation essential in the loop is discussed. The NH3-PSA method was newly developed, since the NH3-PSA was evaluated best among separation methods from the viewpoints of CELSS criteria. It is essential to retain the H2/N2 ratio in the outlet gas the same as that of the inlet gas to the PSA. From the experimental result of PSA a material balance of the NH3 synthesis loop was calculated. Additionally a material balance of the overall process was calculated by assuming some performances in the down stream sections of the NH3 synthesis loop.