Chemical Engineering Discipline, School of Engineering and ‡School of Science, Monash University , Jalan Lagoon Selatan, Bandar Sunway, 46150, Selangor Darul Ehsan, Malaysia.
J Agric Food Chem. 2014 Jan 22;62(3):691-8. doi: 10.1021/jf404265f. Epub 2014 Jan 8.
In this laboratory-scale study, earthworms were introduced as biodegraders of palm oil mill effluent (POME), which is a wastewater produced from the wet process of palm oil milling. POME was absorbed into amendments (soil or rice straw) in different ratios as feedstocks for the earthworm, Eudrilus eugeniae. The presence of earthworms led to significant increases in pH, electrical conductivity, and nutrient content but decreases in the C/N ratio (0.687-75.8%), soluble chemical oxygen demand (19.7-87.9%), and volatile solids (0.687-52.7%). However, earthworm growth was reduced in all treatments by the end of the treatment process. Rice straw was a better amendment/absorbent relative to soil, with a higher nutrient content and greater reduction in soluble chemical oxygen demand with a lower C/N ratio in the vermicompost. Among all treatments investigated, the treatment with 1 part rice straw and 3 parts POME (w/v) (RS1:3) produced the best quality vermicompost with high nutritional status.
在这项实验室规模的研究中，引入蚯蚓作为棕榈油厂废水（POME）的生物降解剂，POME 是棕榈油湿磨过程中产生的废水。POME 以不同比例被吸收到改良剂（土壤或稻草）中，作为蚯蚓，Eudrilus eugeniae 的饲料。蚯蚓的存在导致 pH 值、电导率和养分含量显著增加，但 C/N 比（0.687-75.8%）、可溶解化学需氧量（19.7-87.9%）和挥发性固体（0.687-52.7%）降低。然而，到处理结束时，所有处理组中的蚯蚓生长都减少了。与土壤相比，稻草作为改良剂/吸收剂更好，在蚯蚓堆肥中具有更高的养分含量和更大的可溶解化学需氧量减少，同时 C/N 比更低。在所研究的所有处理中，1 份稻草和 3 份 POME（w/v）（RS1:3）的处理产生了具有高营养状态的最佳质量的蚯蚓堆肥。
