Biosolids-derived fertilisers: A review of challenges and opportunities
Article
Article Title | Biosolids-derived fertilisers: A review of challenges and opportunities |
---|---|
ERA Journal ID | 3551 |
Article Category | Article |
Authors | Marchuk, Serhiy, Tait, Stephan, Sinha, Payel, Harris, Peter, Antille, Diogenes L. and McCabe, Bernadette K. |
Journal Title | Science of the Total Environment |
Journal Citation | 875, pp. 1-12 |
Article Number | 162555 |
Number of Pages | 12 |
Year | Mar 2023 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0048-9697 |
1879-1026 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.scitotenv.2023.162555 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0048969723011713 |
Abstract | Soil application of biosolids as an organic fertiliser continues to be a cost-effective way to beneficially utilise its carbon and nutrient contents to maintain soil fertility. However, ongoing concerns over microplastics and persistent organic contaminants means that land-application of biosolids has come under increased scrutiny. To identify a way forward for the ongoing future use of biosolids-derived fertilisers in agriculture, the current work presents a critical review of: (1) contaminants of concern in biosolids and how regulatory approaches can address these to enable on-going beneficial reuse, (2) nutrient contents and bioavailability in biosolids to understand agronomic potential, (3) developments in extractive technologies to preserve and recover nutrients from biosolids before destructive dissipation when the biosolids are thermally processed to deal with persistent contaminants of concern (e.g. microplastics), and (4) use of the recovered nutrients, and the biochar produced by thermal processing, in novel organomineral fertilisers that match specific equipment, crop and soil requirements of broad-acre cropping. Several challenges were identified and recommendations for prioritisation of future research and development are provided to enable safe beneficial reuse of biosolids-derived fertilisers. Opportunities include more efficient technologies to preserve, extract and reuse nutrients from sewage sludge and biosolids, and the production of organomineral fertiliser products with characteristics that enable reliable widespread use across broad-acre agriculture. |
Keywords | Agronomic value; Land application; Nutrients recycling; Regulation; Sustainable management |
ANZSRC Field of Research 2020 | 410699. Soil sciences not elsewhere classified |
410599. Pollution and contamination not elsewhere classified | |
410402. Environmental assessment and monitoring | |
Byline Affiliations | Centre for Agricultural Engineering (Operations) |
Centre for Agricultural Engineering | |
Centre for Agricultural Engineering (Research) | |
Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia |
https://research.usq.edu.au/item/x2823/biosolids-derived-fertilisers-a-review-of-challenges-and-opportunities
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