Spring 2017 Global Biosolids Science News

Harmonization of the current regulation on the use of biosolids in agriculture, mainly based on total N and pollutant contents, is needed to better recycle P in agriculture. (Biosolid Application to Agricultural Land—a Contribution to Global Phosphorus Recycle: A Review, Pedosphere, Volume 27, Issue 1, February 2017, Pages 1-16).

Land application of biosolids is an effective way to enhance carbon sequestration in soils and reduce greenhouse gas (GHG) emissions. (Relationship Between Mineral Soil Surface Area and Carbon Sequestration Rate for Biosolids Added to Soil ).

The fate and transport of seven pharmaceutical and personal care products (PPCPs) with different physicochemical properties was analyzed and shown to have a low potential to contaminate groundwater. (Fate of pharmaceuticals in soil after application of STPs products: Influence of physicochemical properties and modelling approach, Chemosphere, Volume 182, September 2017, Pages 406–415).

A biosolids loading equivalent to 700–1000 mg kg−1 Zn appeared to be optimal for maximum bacterial and fungal diversity.  (The response of soil microbial diversity and abundance to long-term application of biosolids , Environmental Pollution, Volume 224, May 2017, Pages 16–25).

Concentrations of triclosan and triclocarban in runoff post land application of biosolids were mainly below the limits of detection, indicating that runoff is not a significant pathway of entry into the environment. ( Antimicrobial compounds (triclosan and triclocarban) in sewage sludges, and their presence in runoff following land application , Ecotoxicology and Environmental Safety, Volume 142, August 2017, Pages 448–453)