Food waste digestate (FWD) is an organic waste characterized by high NH₄⁺-N content and its composting is challenging due to the higher NH₃ emission and nitrogen loss. In the present study, FWD was co-composted with sawdust and mature compost, and zeolite was used as a physical additive for nitrogen conservation. The results demonstrated that amending 5% and 10% zeolite reduced the NH₃ emission to 1.8% and 1.6%, respectively, compared to 2.5% in the control without any zeolite. Overall, the zeolite amendment had a positive impact on nitrogen conservation as the nitrogen loss could be mitigated by 34–39% using 5–10% dosages. Besides, the zeolite addition showed considerable improvement in the FWD decomposition as the degradation rate was increased by 30–32% resulting in a carbon loss of 27–29%. Furthermore, the phytotoxic nature of FWD could be diminished by zeolite amendment which reduced the NH₄⁺-N contents to a permissible limit (≤500 mg/kg dm) and increased the seed germination index to > 80% in 14 days of co-composting.

餐厨垃圾沼渣（FWD）是一种有机垃圾，其特点是NH ₄ ^{+ -N含量高，由于NH} ₃排放量和氮损失较高，其堆肥具有挑战​​性。在本研究中，FWD 与锯末和成熟堆肥共同堆肥，沸石用作保氮的物理添加剂。结果表明，修正 5% 和 10% 的沸石降低了 NH ₃排放量分别为 1.8% 和 1.6%，而没有任何沸石的对照为 2.5%。总体而言，沸石改良剂对氮保护产生了积极影响，因为使用 5-10% 的剂量可以减少 34-39% 的氮损失。此外，沸石的添加在 FWD 分解方面表现出相当大的改善，因为降解率增加了 30-32%，导致碳损失为 27-29%。_{此外，通过将 NH 4} ⁺ -N 含量降低到允许限度（≤500 mg/kg dm）并在 14 天共混处理后将种子发芽指数提高到 > 80%的沸石改良剂，可以降低 FWD 的植物毒性。堆肥。