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A thermophilic pilot scale anaerobic digester treating chicken litter was subjected to pulse loads of ammonia of increasing concentration. A micro gas chromatograph (μ-GC) measured CO 2 , CH 4 , N 2 , H 2 and H 2 S in the biogas. In the liquid, NH 4 -N was measured manually, volatile fatty acids (VFA) were measured manually and with Near Infrared Spectroscopy...
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