16 research outputs found
Engineered in situ biogeochemical transformation as a secondary treatment following ISCO – A field test
Cultivation of Nannochloropsis oculata in saline oil & gas wastewater supplemented with anaerobic digestion effluent as nutrient source
New approach to the ecotoxicological risk assessment of artificial outdoor sporting grounds
Thermally enhanced in situ bioremediation of groundwater contaminated with chlorinated solvents – A field test
Evaluation of heavy metals background in the Adriatic Sea sediments of Abruzzo region, Italy
Effects of land use and mineral characteristics on the organic carbon content, and the amount and composition of Na-pyrophosphate-soluble organic matter, in subsurface soils
Sources and levels of potentially toxic elements in the biodegradable fraction of autoclaved non-segregated household waste and its compost/digestate
Waste that reflected the average UK composition of household waste was treated by autoclaving at the three set pressure/temperature
levels of 2.7 bar/130 °C, 6.2 bar/160 °C and 15.5 bar/200 °C. The biodegradable fraction of the autoclaved household
waste (‘floc’) was manually separated by screening and underwent characterization for its Cd, Cr, Cu, Pb, Hg, Ni, and Zn content.
Autoclaving did not guarantee the production of compost/digestate that met the UK specification for compost, BSi
PAS100, without restrictions being made on the composition of the waste feedstock. Results indicate that the levels of Zn and
Cd associated with floc materials alone could lead to compost limit values being exceeded. For all other potentially toxic elements
(PTEs), the estimated excessive (i.e. above levels of compliance) PTEs levels for compost/digestate were mainly due to
external (i.e. non-floc) materials, primarily electronic/electrical waste. Batteries may have also contributed to the high levels of
Zn and Hg. In this study, for all PTEs examined, with the exception of Cd and Zn, autoclaving had a performance comparable
to that of the most effective mechanical biological treatment systems