Zhang Yunxuan, Zhang Lu, Qu Bingpeng
College of Forestry, Beijing Forestry University, Beijing, 100083, PR China.
School of Environmental and Life Sciences, Nanning Normal University, Nanning, 530001, PR China.
J Environ Manage. 2025 Aug;390:126392. doi: 10.1016/j.jenvman.2025.126392. Epub 2025 Jun 30.
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.
好氧堆肥是一种对绿色废弃物（GW）进行生物转化的环境可持续方法。然而，传统的GW堆肥通常受到处理时间长、降解效率低、大量氮素损失和产品质量欠佳的限制。在本研究中，应用了三种具有不同透气和透湿性的功能膜（T1 - T3），以未覆盖处理（CK）作为对照来评估它们对堆肥微环境的影响。在所有处理中，T2表现出最有利的结果，最高堆肥温度为66.4℃，且嗜热阶段延长至12天。与CK相比，T2显著改善了多个参数：水分含量、硝态氮、铵态氮、总氮、有机质降解率、富里酸、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%。与有机转化相关的酶活性，如脱氢酶，也显著增强。值得注意的是，T2的堆肥成熟时间缩短至26天。使用隶属函数模型进行的综合评估表明，T2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CK相比，堆肥成本降低了18.6%。这些发现表明，优化的膜配置可以通过调节气液交换来创造有利的堆肥微环境，从而增强氮素保留、加速有机质转化、提高堆肥质量并减少经济投入。本研究为高效管理GW 的膜辅助堆肥系统设计提供了新的见解。
