The functional membrane is conducive to improve green waste composting process related microenvironment.

IF 8.4 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Journal of Environmental Management Pub Date : 2025-08-01 Epub Date: 2025-06-30 DOI:10.1016/j.jenvman.2025.126392
Yunxuan Zhang, Lu Zhang, Bingpeng Qu
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引用次数: 0

Abstract

Aerobic composting is an environmentally sustainable approach for the bioconversion of green waste (GW). However, conventional GW composting is often limited by prolonged processing times, low degradation efficiency, substantial nitrogen loss, and suboptimal product quality. In this study, three types of functional membranes (T1-T3) with varying air and moisture permeability were applied to assess their effects on the composting microenvironment, using an uncovered treatment (CK) as a control. Among all treatments, T2 demonstrated the most favorable outcomes, with a maximum composting temperature of 66.4 °C and an extended thermophilic phase lasting 12 days. Compared with CK, T2 significantly improved multiple parameters: moisture content, nitrate nitrogen, ammonium nitrogen, total nitrogen, organic matter degradation rate, fulvic acid, humic acid, and germination index increased by 29.3%, 36.3%, 63.0%, 15.9%, 22.8%, 8.3%, 11.1%, and 20.8%, respectively. Enzyme activities related to organic transformation, such as dehydrogenase, were also significantly enhanced. Notably, the composting maturity time for T2 was reduced to 26 days. A comprehensive evaluation using a membership function model revealed that the compost product index (CEI) of T2 reached 0.88, significantly outperforming other treatments. Furthermore, economic analysis indicated an 18.6% reduction in composting cost compared with CK. These findings suggest that an optimal membrane configuration can create a favorable composting microenvironment by regulating gas-liquid exchange, thereby enhancing nitrogen retention, accelerating organic matter transformation, improving compost quality, and reducing economic input. This study offers novel insights into the design of membrane-assisted composting systems for efficient GW management.

该功能膜有利于改善绿色垃圾堆肥过程相关微环境。
好氧堆肥是一种环境可持续的绿色废物(GW)生物转化方法。然而,传统的GW堆肥通常受到处理时间长,降解效率低,大量氮损失和次优产品质量的限制。本研究以无盖处理(CK)为对照,采用3种不同透气性和透湿性的功能膜(T1-T3),评价其对堆肥微环境的影响。在所有处理中,T2表现出最有利的效果,最高堆肥温度为66.4℃,嗜热期延长至12天。与CK相比,T2处理显著提高了水分含量、硝态氮、铵态氮、全氮、有机质降解率、黄腐酸、腐殖酸和发芽指数,分别提高了29.3%、36.3%、63.0%、15.9%、22.8%、8.3%、11.1%和20.8%。脱氢酶等与有机转化相关的酶活性也显著增强。T2的堆肥成熟时间缩短至26 d。利用隶属函数模型进行综合评价,T2处理的堆肥产品指数(CEI)达到0.88,显著优于其他处理。此外,经济分析表明,与对照相比,堆肥成本降低18.6%。综上所述,优化的膜结构可以通过调节气液交换来创造良好的堆肥微环境,从而增强氮潴留,加速有机质转化,提高堆肥质量,减少经济投入。这项研究为高效GW管理的膜辅助堆肥系统的设计提供了新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Environmental Management
Journal of Environmental Management 环境科学-环境科学
CiteScore
13.70
自引率
5.70%
发文量
2477
审稿时长
84 days
期刊介绍: The Journal of Environmental Management is a journal for the publication of peer reviewed, original research for all aspects of management and the managed use of the environment, both natural and man-made.Critical review articles are also welcome; submission of these is strongly encouraged.
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