Improved pyrolysis for sewage sludge valorization via enhanced microcosm vermicomposting

IF 2.7 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Material Cycles and Waste Management Pub Date : 2023-08-29 DOI:10.1007/s10163-023-01787-5

Rapheal Nsiah-Gyambibi

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Abstract

The addition of plant-derived bulking amendments to substrates in sewage vermicomposting provides an improved resource recovery technique for compost production. Producing biochar from these enhanced vermicompost through slow pyrolysis is a value-added approach to recycle the organic waste and has the potential of guaranteeing a complete removal of pathogens. The study assessed the potential use of coconut coir, palm coir and sawdust as bulking amendments in an enhanced vermicomposting and investigated the influence of these enhanced vermicomposting on the quality of biochar produced via slow pyrolysis. Results revealed that the enhanced vermicomposting improved the vermiculture of E. foetida and significantly reduced the worm mortality (< 10%). The biochar produced from the enhanced vermicomposting exhibited desired physicochemical characteristics where the coconut coir treatment demonstrated the highest yield (41.65 ± 0.76%) compared to the palm coir (35.32 ± 2.07%) and sawdust (33.18 ± 0.37%). The slow pyrolysis of the enhanced vermicompost also demonstrated a complete pathogen removal (100%) in terms of total coliform and E.coli.

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强化微宇宙蚯蚓堆肥法改善污泥热解的价值

在污水蚯蚓堆肥的基质中添加植物衍生的膨化剂为堆肥生产提供了一种改进的资源回收技术。通过缓慢热解从这些增强的蚯蚓堆肥中生产生物炭是一种回收有机废物的增值方法，并且具有保证完全去除病原体的潜力。该研究评估了椰子、棕榈和锯末作为膨化剂在强化蠕虫堆肥中的潜在用途，并研究了这些强化蠕虫堆肥对缓慢热解产生的生物炭质量的影响。结果表明，强化蚯蚓堆肥改善了线虫的孳生，显著降低了线虫的死亡率(10%)。强化蚯蚓堆肥制备的生物炭具有良好的理化特性，其中椰子炭的产量最高(41.65±0.76%)，棕榈炭(35.32±2.07%)和木屑(33.18±0.37%)高于椰子炭(35.32±2.07%)。增强蚯蚓堆肥的缓慢热解也表明，就总大肠菌群和大肠杆菌而言，病原体完全去除(100%)。

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来源期刊

Journal of Material Cycles and Waste Management 环境科学-环境科学

CiteScore

5.30

自引率

16.10%

发文量

205

审稿时长

4.8 months

期刊介绍： The Journal of Material Cycles and Waste Management has a twofold focus: research in technical, political, and environmental problems of material cycles and waste management; and information that contributes to the development of an interdisciplinary science of material cycles and waste management. Its aim is to develop solutions and prescriptions for material cycles. The journal publishes original articles, reviews, and invited papers from a wide range of disciplines related to material cycles and waste management. The journal is published in cooperation with the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM).