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首页> 外文期刊>African Journal of Biotechnology >Effects of palm oil mill effluent (POME) anaerobic sludge from 500 m3 of closed anaerobic methane digested tank on pressed-shredded empty fruit bunch (EFB) composting process
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Effects of palm oil mill effluent (POME) anaerobic sludge from 500 m3 of closed anaerobic methane digested tank on pressed-shredded empty fruit bunch (EFB) composting process

机译：密闭厌氧沼气池中500立方米棕榈油厂废水（POME）厌氧污泥对切碎的空果堆（EFB）堆肥过程的影响

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In this study, co-composting of pressed-shredded empty fruit bunches (EFB) and palm oil mill effluent (POME) anaerobic sludge from 500 m3?closed anaerobic methane digested tank was carried out. High nitrogen and nutrients content were observed in the POME anaerobic sludge. The sludge was subjected to the pressed-shredded EFB to accelerate the co-composting treatment. In the present study, changes in the physicochemical characteristics of co-composting process were recorded and evaluated. The co-composting treatment was completed in a short time within 40 days with a final C/N ratio of 12.4. The co-composting process exhibited a higher temperature (60 - 67°C) in the thermophilic phase followed by curing phase after four weeks of treatment. Meanwhile, pH of the composting pile (8.1 - 8.6) was almost constant during the process and moisture content was reduced from 64.5% (initial treatment) to 52.0% (final matured compost). The use of pressed-shredded EFB as a main carbon source and bulking agent contributed to the optimum oxygen level in the composting piles (10 - 15%). The biodegradation of composting materials is shown by the reduction of cellulose (34.0%) and hemicellulose (27.0%) content towards the end of treatment. In addition, considerable amount of nutrients and low level of heavy metals were detected in the final matured compost. It can be concluded that the addition of POME anaerobic sludge into the pressed-shredded EFB composting process could produce acceptable and consistent quality of compost product in a short time.
机译：本研究对500 m3密闭的厌氧沼气池中的空果丝（EFB）和棕榈油厂废水（POME）厌氧污泥进行联合堆肥。在POME厌氧污泥中观察到高氮和养分含量。污泥经过压碎的EFB处理，以加速堆肥处理。在本研究中，记录并评估了堆肥过程的理化特性变化。共堆肥处理在40天内短时间内完成，最终C / N比为12.4。共堆肥过程在处理四个星期后，在嗜热阶段，随后固化阶段表现出较高的温度（60-67°C）。同时，堆肥过程中的pH值（8.1-8.6）几乎恒定，含水量从64.5％（初始处理）降至52.0％（最终成熟的堆肥）。使用压碎的EFB作为主要的碳源和填充剂有助于堆肥堆中的最佳氧气含量（10-15％）。处理结束时纤维素（34.0％）和半纤维素（27.0％）含量的减少显示了堆肥材料的生物降解。此外，在最终成熟的堆肥中还检测到大量养分和少量重金属。可以得出结论，将POME厌氧污泥添加到压碎的EFB堆肥过程中可以在短时间内生产出可接受且一致的堆肥产品质量。

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