The final disposal of sewage sludge is a growing concern worldwide as it has impacts on the water availability and quality for consumption, and economic activities. The Companhia de Saneamento Ambiental do Distrito Federal (CAESB) processes 400 t of biosolids a day that is rich in mineral nutrients and organic matter. Despite the lack of local agronomic criteria for use, biosolids has found a growing demand in grain, fruit crops, coffee and pastures cultivation. To evaluate the immediate (first year) […]

First regulations concerning contaminant contents in fertilizers were implemented in the State of Washington, USA. The objective of our study was to consider the events as a possible reference for a similar ongoing situation in Brazil. The significant role of the press, which kept people informed and aware about the problem of waste-derived fertilizers, is discussed. Several groups, some with divergent points of view, were called upon to contribute to the final legislation, which was backed up by relevant technical […]