Batch drum composting of organic market waste versus soil-like material from landfill mining: agronomic performance and techno-economic feasibility in a circular economy framework

IF 3.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of Material Cycles and Waste Management Pub Date : 2026-08-24 DOI:10.1007/s10163-026-02700-6

Nguyen Thi The Nguyen, Phan Van Nguyen, Nguyen Thi Lien, Ngoc-Thuy Vu, Hoa Thanh Nguyen

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引用次数: 0

Abstract

Municipal solid waste in Vietnam is still mostly landfilled. We compared two nutrient recovery routes: batch drum composting of organic market waste, and soil-like material (SLM) recovered from a closed landfill. In a single-drum pilot trial, compost inoculated with effective microorganisms (EM) reached a C: N ratio of 10.6:1 and 2.4% total nitrogen after 30 days, against 11:1 and 1.74% without EM. In pot trials with Brassica sp., soil amended with EM compost at 1:10 produced the tallest plants (8.0 cm stem length; control 1.8 cm), while SLM acted as a slow-release conditioner and roughly doubled biomass over the control. At 1:5, dry biomass fell by 11.9 to 16.7% for compost and 13.7% for SLM, mainly because of elevated electrical conductivity; the EC of SLM (5.2 dS/m) already exceeds the 4.0 dS/m phytotoxicity threshold before mixing. EM compost gave a direct net cash benefit of 2.0 to 3.5 million VND/t, rising to 4.5 to 7.0 million VND/t once agronomic value is counted, with an IRR of 18 to 28%. SLM earned less (0.5 to 1.2 million VND/t) but cost only 0.9 to 1.3 million VND/t to produce and scales easily. Compost suits urban agriculture; SLM suits bulk land reclamation.

Graphical Abstract

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有机市场废物与垃圾填埋场采矿类土材料的批量滚筒堆肥：循环经济框架下的农艺性能和技术经济可行性

越南的城市固体废物大部分仍然是填埋的。我们比较了两种养分回收途径：批量桶堆肥有机市场废物和土壤样材料（SLM）从一个封闭的垃圾填埋场回收。在单筒试验中，接种有效微生物（EM）的堆肥在30天后的C: N比为10.6:1，总氮含量为2.4%，而未接种EM的堆肥在30天后的C: N比为11:1，总氮含量为1.74%。在盆栽试验中，施用1:10 EM堆肥的土壤最高，茎长为8.0 cm，对照为1.8 cm，而SLM作为缓释调节剂，生物量约为对照的两倍。1:5时，堆肥和SLM的干生物量分别下降11.9 ~ 16.7%和13.7%，主要原因是电导率升高；混合前，SLM的EC （5.2 dS/m）已超过4.0 dS/m的植物毒性阈值。EM堆肥的直接净现金效益为200万至350万越南盾/吨，一旦计算农艺价值，净现金效益将上升至450万至700万越南盾/吨，内部收益率为18%至28%。SLM的收益较低（50 - 120万越南盾/吨），但生产成本仅为90 - 130万越南盾/吨，且易于扩展。堆肥适合都市农业；SLM适合大规模土地复垦。图形抽象

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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).