A greenhouse trial assessed the effects of biochar and vermicompost as partial substitutes conventional growing media on leafy vegetables’ yields changes NH 4 + -N NO 3 − in medium leachates. Six mixtures [(a) coir, (b) coir biochar, (c) vermicompost, (d) peat, (e) peat +vermicompost, (f) biochar] combined with three nitrogen (N) rates [0% (0 g N·pot −1 ), 50% (0.5 100% (1.0 ) commercial recomm...

Microplastics enter the soil in a variety of shapes and polymer types altering properties with known consequences for plant growth. However, effects range different microplastic on seed germination are mostly unknown. Here, we established glasshouse experiment that included 12 representing (fibers, films, foams fragments) polymers, mixed each them at concentration 0.4% (w/w). Fifty seeds Daucus...

In this study low-grade magnesium oxide (MgO) produced by calcinations of natural magnesite was used in mine water treatment using a laboratory-column device. The from the abandoned Osor (NE Spain) with MgO showed removal metals both and tailing leachates. PHREEQC numerical code Geochemist’s Workbench (GWB) were to evaluate speciation dissolved constituents calculate saturation state effluents....

Dairy manure has been linked to elevated phosphorus (P) levels in surface waters of Lake Okeechobee basin. Prevalent soils of the basin (Aquods) retain little P in sandy, quartz-dominated upper horizons, and lateral P transport is favored by high water tables. The stability of manure-derived P forms is thus an important factor in the Okeechobee basin and other regions where soil and hydrologic ...

Large amounts of rubber particles are dispersed into the environment due to tire wear. The rubber contains a wide range of chemicals, including several of environmental concern. The purpose of this thesis, which is based on six papers [I–VI], was to assess the ecotoxicological hazard and risk associated with tire wear particles, with a main focus on the aquatic environment. A method was develop...

Introduction: Previous studies have shown that 54 Cr is heterogeneously distributed in Solar System materials, including chondrites, differentiated stony and iron meteorites [1]. Each meteorite group has its characteristic 54 Cr signature. Even though the 54 Cr anomalies are widely thought to be nucleosynthetic in origin, the nucleosynthetic process responsible for its production and the cause ...

The formation of leachate is one the inevitable consequences associated with operation landfills. In addition to study physicochemical composition, toxicity an important parameter taken into account, among others because need subject treatment before discharge environment. aim this was determine degree contamination using LPI and index. An analysis relationship between toxic effect on plants ca...