Combating Food Waste with Sustainable Poultry Feed and Fertilizer Production
Abstract
Industrial and commercial operations produce the majority of Food Waste (FW), and the majority of FW produced by households as part of the general waste collection and is moreover burned or dumped. Collecting FW constitutes a distinct kind of trash, and using it to generate compost or recapture energies via anaerobic digestion (AD) is gaining popularity. This study determined to employ FW to make Poultry Feed and Liquid fertilizers (PFLF). The service café, club, bakery, supermarket, and restaurant all contributed to the gathering of the FW samples for this study. The PFLF method generated poultry feed pellets (PFP) with a protein level of 20%. This is within the range of 17 to 25%, typical of most commercially available PFP, and falls within the range suggested by the National Research Council (NRC), which is 18 to 27%. The liquid extract from PFLF may thus be used in hydroponic systems instead of the commercial Liquid Fertilizer (LF). The PFLF process may provide environment credits for 17 parameters out of the 20 categories of effects taken into account in the study, according to the results of the life cycle analysis (LCA) application study of the process's environmental impact. The measured ecological credits remained much higher compared to AD, incineration, and landfills as alternatives to disposal.
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