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Biosolids towards Back–To–Earth alternative concept (BEA) for environmental sustainability: a review

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Abstract

Biosolids are a nutrient-rich stable substance obtained during wastewater treatment process. With amplifying population and industrial development, upsurge of biosolid generation is also speculated. Biosolids are endowed with essential plant nutrient (macro- and micro-nutrients) which qualifies them to be used as soil amendment and in turn dwindles the use of chemical fertilizers. The characteristics of biosolid depends on the nature of the treatment process. In this regard, it would be possible to recycle certain nutrients from the agricultural use of biosolids and could be a sustainable solution to the management of this waste. Biosolids may therefore serve as a key tool for farm utilization. It improves the soil health through nutrient supply and promotes the plant growth. Furthermore, they are slow-release fertilizer and hence, restrains from groundwater contamination. This review, in a nutshell, unravels the influence of biosolids on land application, its effect on soil properties, agricultural and horticultural crops, environmental ramification of biosolids in restoring the degraded land and carbon sequestration.

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Acknowledgements

The authors wish to thank Tamil Nadu Agricultural University for providing necessary support and facilities to perform this work.

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Ramesh Poornima: writing original draft, conceptualization; Kathirvel Suganya: data curation, supervision, validation, writing—original draft; Selvaraj Paul Sebastian: data curation, supervision, validation, writing—review and editing

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Correspondence to Kathirvel Suganya.

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The authors declare no competing interests.

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Poornima, R., Suganya, K. & Sebastian, S.P. Biosolids towards Back–To–Earth alternative concept (BEA) for environmental sustainability: a review. Environ Sci Pollut Res 29, 3246–3287 (2022). https://doi.org/10.1007/s11356-021-16639-8

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  • DOI: https://doi.org/10.1007/s11356-021-16639-8

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