Feasible and effective reuse of municipal sludge for vegetation restoration: physiochemical characteristics and microbial diversity.

ABSTRACT: The large volume of municipal sludge causes environmental problems in cities worldwide. In this study, municipal sludge, mixed with construction waste residue, was used as substrate to plant Ailanthus altissima. The growth of A. altissima, the substrate characteristics, and substrate microbial diversity were measured to investigate potential recycling and reusing pathways of municipal sludge. The obtained results showed that compared to garden soil, the mixed substrate was weakly alkaline, and had higher nutrient contents, which is beneficial for A. altissima, and results in better growth in mixed substrate. Although the contents of the main heavy metals in the mixed substrate were significantly higher than in garden soil, the values met the criterion of Class II soil in the Environmental

SUBMITTER: Liu X 

PROVIDER: S-EPMC6351607 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature