Choy Sing Ying, Wang Ke, Qi Wei, Wang Ben, Chen Chia-Lung, Wang Jing-Yuan
a Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute , Nanyang Technological University , Singapore.
Environ Technol. 2015 May-Jun;36(9-12):1448-56. doi: 10.1080/09593330.2014.993728. Epub 2015 Feb 3.
Horticultural waste was co-composted with fruit peels, food waste, and soybean residues individually to evaluate the effects of these easily available organic wastes in Singapore on the composting process and product quality. Each co-composting material was mixed with horticultural waste in the wet weight ratio of 1:1 and composted for 46 days. Results showed that all co-composting materials accelerated the degradation of total carbon and resulted in higher nutrients of nitrogen (N), phosphorous (P), and potassium (K) in the final product compared with horticultural waste alone. Mixture with fruit peels achieved the fastest total carbon loss; however, did not reach the minimum required temperature for pathogen destruction. The end product was found to be the best source for K and had a higher pH that could be used for the remediation of acidic soil. Food waste resulted in the highest available nitrate (NO3-N) content in the end product, but caused high salt content, total coliforms, and slower total carbon loss initially. Soybean residues were found to be the best co-composting material to produce compost with high N, P, and K when compared with other materials due to the highest temperature, fastest total carbon loss, fastest reduction in C/N ratio, and best conservation of nutrients.
将园艺废弃物分别与果皮、食物垃圾和大豆残渣进行共堆肥，以评估新加坡这些易于获取的有机废弃物对堆肥过程和产品质量的影响。每种共堆肥材料均按湿重比1:1与园艺废弃物混合，并堆肥46天。结果表明，与单独的园艺废弃物相比，所有共堆肥材料均加速了总碳的降解，且最终产品中的氮（N）、磷（P）和钾（K）养分含量更高。与果皮混合实现了最快的总碳损失；然而，未达到病原体杀灭所需的最低温度。最终产品被发现是钾的最佳来源，且pH值较高，可用于酸性土壤修复。食物垃圾导致最终产品中有效硝酸盐（NO3-N）含量最高，但最初导致盐分含量高、总大肠菌群多且总碳损失较慢。与其他材料相比，大豆残渣被发现是生产高氮、磷、钾堆肥的最佳共堆肥材料，因为其温度最高、总碳损失最快、碳氮比降低最快且养分保存最佳。
