Communities are often concerned about whether the use of biosolid
fertilizers could lead to migration of bacteria and viruses away from the site of application, for instance in aerosols carried by air currents or by movement of pathogens through soil and into groundwater.
In 2018, Illinois American Water partnered with Illinois farmers to apply over 31,000 tons of residuals and biosolids
, rather than sending them to a landfill.
In search of a cheaper and more permanent fix, they entered into discussions with Terrapure Organics Solutions (formerly Terrapure Environment) to establish a trial project to apply municipally treated biosolids
Mixing the biosolid
material with clay for use in brick manufacture would cut down on the 30 per cent of sewage still sent to landfill or stored.
In this context, this study aimed to evaluate the different chemical forms of copper and zinc in biosolid
, of the city of Montes Claros/MG, cultivated with Pennisetum purpureum in different periods.
The content of sand, silt and clay in the biosolid
can be seen in Table 3.
To demonstrate the effects of DWB and CB on the change in the residual bioavailable fractions of Cu and Zn after one harvest, the ratios of DTPA-extractable to total concentrations of metals (as determined by XRF) in biosolid-amended soil samples were plotted against the biosolid
application rate (Figs 2, 3); the expected ratios were also plotted for comparison.
The amendments had taken place 16 to 24 years earlier during a series of studies on biosolid
amendments, and they had been applied to the soils at several different rates.
The nanoparticles had a marked impact on plants' growing ability--reducing the growth of one plant species by 22% as compared with silver-free biosolid
Interviewees suggested that organizational, political, logistical, and scientific challenges should be considered when designing a protocol to investigate human illness reports attributed to biosolids