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Environmental Systems Research
Fig. 8 | Environmental Systems Research

Fig. 8

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

Fig. 8

Changes in \({\text{NO}}_{ 3}^{ - }\) concentration 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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