Four different raw material mixtures of waste were evaluated and compared:
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“M0B1” (Meat0, Bulking agent1): only vegetal feedstock. Vegetal food waste was mixed with the bulking agent in a volume ratio of 1:0.6.
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“M1B1” (Meat1, Bulking agent1): low dosage (5%) of meat waste (fresh weight) was added to the vegetal food waste (ratio food waste/bulking agent 1:0.6 of volume).
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“M2B1” (Meat2, Bulking agent1): high dosage (15%) of meat waste (fresh weight) was added to the vegetal food waste (ratio food waste/bulking agent 1:0.6 of volume).
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“M2B2” (Meat2, Bulking agent2): like M2B1, but with a double ratio of bulking agents (ratio food waste/bulking agent 1:1.2 of volume). The double amount of woody materials was introduced as treatment with the aim to observe if it produced an improvement in the composting conditions, by increasing aeration and avoiding leachate formation. A good aeration and porosity of material during composting usually prevents the establishment of anaerobic conditions and increases ventilation and aerobic respiration activity of microorganisms.
Four different raw material mixtures of waste were evaluated and compared:–“M0B1” (Meat0, Bulking agent1): only vegetal feedstock. Vegetal food waste was mixed with the bulking agent in a volume ratio of 1:0.6.–“M1B1” (Meat1, Bulking agent1): low dosage (5%) of meat waste (fresh weight) was added to the vegetal food waste (ratio food waste/bulking agent 1:0.6 of volume).–“M2B1” (Meat2, Bulking agent1): high dosage (15%) of meat waste (fresh weight) was added to the vegetal food waste (ratio food waste/bulking agent 1:0.6 of volume).–“M2B2” (Meat2, Bulking agent2): like M2B1, but with a double ratio of bulking agents (ratio food waste/bulking agent 1:1.2 of volume). The double amount of woody materials was introduced as treatment with the aim to observe if it produced an improvement in the composting conditions, by increasing aeration and avoiding leachate formation. A good aeration and porosity of material during composting usually prevents the establishment of anaerobic conditions and increases ventilation and aerobic respiration activity of microorganisms.
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