Using a scalar relativistic all-electron density functional method, we studied uranium(VI) complexation with benzoic acid and its derivatives in aqueous solution as models of uranyl humates. We explored monodentate, bidentate, and chelate coordination of various isomers of methyl and hydroxyl substituted benzoic acid ligands. Monodentate complexes were determined to be energetically preferred a...

The analysis of the main environmental consequences leaks and local spills petroleum products at enterprises mineral resource complex is presented. It established that problem soil contamination with facilities other industries caused by significant volumes consumption types oil products. Based on results author's previous field research, a series experiments was carried out, consisting in mode...

Abstract In recent decades, the number of birds reared per unit area has dramatically spiked to increase profitability in egg and meat production. However, nowadays, sensitivity animal welfare consumer demands brings along with it a raised interest stocking density. Stocking density is defined either as animals or body weight animal. High density, which stress factor, can be an decrease Stress ...

The positive effect of humic acids on the growth of plant roots is well known, however, the mechanisms and role of their physical structure in these processes have not been fully explained yet. In this work, South-Moravian lignite was oxidized by means of nitric acid and hydrogen peroxide to produce a set of regenerated humic acids. The elemental composition, solid state stability and solution ...

Organic matter, compost, humus, humates, humic acid, and fulvic acid are all related to, and parts of, decaying plant materials. It’s food for soil life and a storehouse for minerals, energy and water. These organic materials are mediums for certain organisms to grow on. The biological/organic farming system is based on balanced minerals and lots of soil life in terms of diversity and volume. S...

The research was organized on the Balta Unchiașului tailings dump, Rovinari, Gorj county, a dump covered with 30 cm of fertile soil, aiming to establish effect fertilization fertilizers, cattle manure, compost, lignite –based fertilizer and liquid based humates extracted from sunflower production followed mineral compost fertilizers lignite, crop). chemical characteristics crop substrate had la...

Commercial humic fertilizers (humates) can be used to improve carbon sequestration. In this study, a 3-year field trial (2016–2018) employed four treatments investigate the mechanism by which humate increases sequestration in fluvo-aquic soils: (1) blank: bare soil with no agricultural treatment; (2) control: standard film mulch (FM) ridge-furrow tillage (which acts as CK); (3) humate: FM plus ...