通过在茶叶堆肥中添加熟料加速堆肥过程

Waste Pub Date : 2024-02-01 DOI:10.3390/waste2010004
Nobuki Morita, Yo Toma, Hideto Ueno
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摘要

茶饮料市场丢弃的茶叶和火力发电厂产生的熟料的处理对环境造成了影响;然而,还没有将它们结合起来进行堆肥的报道。因此,本研究评估了在以茶叶(一种有机废物)为基础的堆肥中添加火力发电厂熟料对堆肥率和堆肥质量的影响。只添加茶叶的堆肥被称为 "熟料 0%",添加了 20%(重量比)、40%(重量比)和 60%(重量比)茶叶的堆肥分别被称为 "熟料 20%"、"熟料 40%"和 "熟料 60%"。将每种混合材料放入一个 35 升的带盖聚丙烯容器中,堆肥 95 天。堆肥率通过热水提取物中的化学需氧量(COD)和使用幼年甘蓝(Brassica rapa var.)与熟料 0%相比,添加熟料 20%、40% 和 60%后,堆肥初期的 COD 分别降低了 52.0%、74.3% 和 86.7%。此外,堆肥一个月后,根系的伸长受到熟料 0% 的抑制(相对于蒸馏水为 60.1%),而添加熟料则不受抑制(相对于蒸馏水为 91.7-102.7%)。这表明,在茶叶堆肥中添加熟料可加速堆肥。
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Acceleration of Composting by Addition of Clinker to Tea Leaf Compost
The disposal of tea leaves discarded in the tea beverage market and clinker from coal-fired power plants has an impact on the environment; however, there are no reported cases of their combination for composting. Therefore, this study evaluated the effect of adding clinker from a coal-fired power plant to compost based on tea leaves, an organic waste product, on the composting rate and quality. The tea leaves-only compost was designated as Clinker 0%, and composts with 20% (w/w), 40% (w/w), and 60% (w/w) tea leaves supplemented with clinker were designated as Clinker 20, 40, and 60%, respectively. Each mixed material was placed in a 35 L polypropylene container with a lid and allowed to compost for 95 days. The composting rate was evaluated by the chemical oxygen demand (COD) in hot water extract and plant tests using juvenile komatsuna (Brassica rapa var. perviridis). The addition of clinker reduced the COD at the beginning of composting by 52.0, 74.3, and 86.7% in Clinker 20, 40, and 60%, respectively, compared to Clinker 0%. Furthermore, root elongation one month after composting was inhibited by Clinker 0% (60.1% relative to distilled water), but not by the addition of clinker (91.7–102.7% relative to distilled water). This suggests that the addition of clinker to tea leaf compost may accelerate composting.
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