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Environmental Systems Research
Fig. 9 | Environmental Systems Research

Fig. 9

From: Comparative effectiveness of different composting methods on the stabilization, maturation and sanitization of municipal organic solid wastes and dried faecal sludge mixtures

Fig. 9

Changes in \({\text{NH}}_{ 4}^{ + }\):\({\text{NO}}_{ 3}^{ - }\) ratio of composting mixture in different composting methods with time (WC windrow composting, VC vermicomposting, PC pit composting, WVC combined windrow and vermicomposting). Different letters indicate significant differences at P ≤ 0.05

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