Waste milk humification product can be used as a slow release nano-fertilizer

Abstract

The demand for milk has increased globally, accompanied by an increase in waste milk. Here, we provide an artificial humification technology to recycle waste milk into an agricultural nano-fertilizer. We use KOH-activated persulfate to convert waste milk into fulvic-like acid and humic-like acid. We mix the product with attapulgite to obtain a slow-release nano fulvic-like acid fertilizer. We apply this nano-fertilizer to chickweeds growing in pots, resulting in improved yield and root elongation. These results indicate that waste milk could be recycled for agricultural purposes, however, this nano-fertilizer needs to be tested further in field experiments.

Abstract

The growth in global milk demand has been accompanied by an increase in waste milk disposal. Here, the authors transform waste milk through humification and incorporate the product into attapulgite creating a nano-fertiliser that benefits for plants growing in pots.