Insight in molecular degradation patterns and co-metabolism during rose waste co-composting

IF 3.9 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Biogeochemistry Pub Date : 2023-11-07 DOI:10.1007/s10533-023-01092-1

E. A. de Nijs, B. Jansen, S. Absalah, R. Bol, A. Tietema

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Abstract

Composting is recognized as a sustainable waste management strategy. However, little is known about green waste, and specifically rose waste, degradation patterns during composting. This study aimed (1) to gain insight in the underlying decomposition patterns during rose waste composting and (2) to identify co-metabolisms of ligneous material. Five different compost mixtures were tested ranging from pure rose waste to mixtures with tomato waste, kalanchoe waste or mature compost added. Samples were taken during a six-month experiment and analyzed by pyrolysis-GC/MS. The temporal trends in the relative abundance of 10 different compound groups were measured. Lignin and aliphatic compounds together accounted for ≥ 50% of the quantified pyrolysis products, but with changing contributions during composting. The relative abundance of polysaccharides and terpenes strongly decreased with more than 60% in the first 2 months. The simultaneous decrease in relative abundance of lignin and polysaccharides during initial composting phase indicated co-metabolism of lignin. The results from this study showed that while the presence of lignin is commonly regarded as a challenge in composting, it actually undergoes degradation through distinct mechanisms at the various composting stages.

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玫瑰废弃物共堆肥过程中的分子降解模式和共代谢研究

堆肥是公认的可持续废物管理战略。然而，人们对绿色垃圾，特别是玫瑰垃圾在堆肥过程中的降解模式知之甚少。本研究旨在（1）深入了解玫瑰废弃物堆肥过程中的潜在分解模式，（2）确定木质材料的共同代谢。测试了五种不同的堆肥混合物，从纯玫瑰废料到添加番茄废料、卡兰乔废料或成熟堆肥的混合物。在为期六个月的实验中取样，并通过热解GC/MS进行分析。测量了10个不同化合物组的相对丰度的时间趋势。木质素和脂族化合物合计占≥ 50%的定量热解产物，但在堆肥过程中贡献不断变化。多糖和萜烯的相对丰度在前2个月内大幅下降，降幅超过60%。在堆肥初始阶段，木质素和多糖的相对丰度同时降低，表明木质素的共代谢。这项研究的结果表明，虽然木质素的存在通常被认为是堆肥中的一个挑战，但它实际上在不同的堆肥阶段通过不同的机制进行降解。

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来源期刊

Biogeochemistry 环境科学-地球科学综合

CiteScore

7.10

自引率

5.00%

发文量

112

审稿时长

3.2 months

期刊介绍： Biogeochemistry publishes original and synthetic papers dealing with biotic controls on the chemistry of the environment, or with the geochemical control of the structure and function of ecosystems. Cycles are considered, either of individual elements or of specific classes of natural or anthropogenic compounds in ecosystems. Particular emphasis is given to coupled interactions of element cycles. The journal spans from the molecular to global scales to elucidate the mechanisms driving patterns in biogeochemical cycles through space and time. Studies on both natural and artificial ecosystems are published when they contribute to a general understanding of biogeochemistry.