Soil pollution by the presence of different contaminants (e.g. heavy metal ions or pesticides) is one of the biggest problems worldwide. The positive affinity of natural humic acids towards these contaminants might contribute to the soil and ground water protection; therefore it is necessary to study the reactivity and barrier properties of humic acids. An original reactivity-mapping tool based...

The intensification of crop production coupled with current declining soil fertility needs proper plant nutrition management and improved effectiveness fertilizer use. Sustainable practices providing new amendments could be a useful tool to improve productivity causing economic benefits. technology processing local raw materials (leonardite, bentonite, molasses) was developed produce optimal ph...

Low concentrations of the dissolved leonardite humic acid HuminFeed(®) (HF) prolonged the lifespan and enhanced the thermal stress resistance of the model organism Caenorhabditis elegans. However, growth was impaired and reproduction delayed, effects which have also been identified in response to other polyphenolic monomers, including Tannic acid, Rosmarinic acid, and Caffeic acid. Moreover, a ...

REFERENCIAS Y ENLACES [1] F. J. Stevenson, Humus Chemistry: Genesis, Composition, Reactions, Wiley Interscience, New York (1994). [2] G. R. Aiken, “Isolation and concentration technique for aquatic humic substances”, p. 363−385 in Humic Substances in Soil, Sediment and Water, G. R. Aiken, D. M. McKnight, R. L. Wershaw, P. MacCarthy, Edts., Wiley, New York (1985). [3] Y. Inbar, Y. Chen, Y. Hadar...

Quercus cerris is an important oak species extended in large areas of Eastern Europe and Minor Asia that has a thick bark which is not utilized at all. The sorption performance of cork from Quercus cerris bark with four polycyclic aromatic hydrocarbons (PAHs) (acenaphthene, fluorene, phenanthrene, and anthracene) was investigated. Quercus cerris cork was characterized for elemental analysis, ac...

Deinococcus radiodurans is an exceptionally radiation-resistant microorganism capable of surviving acute exposures to ionizing radiation doses of 15,000 Gy and previously described as having a strictly aerobic respiratory metabolism. Under strict anaerobic conditions, D. radiodurans R1 reduced Fe(III)-nitrilotriacetic acid coupled to the oxidation of lactate to CO(2) and acetate but was unable ...

BACKGROUND Nowadays a significant amount of land contaminated with toxic elements is being used for agriculture, posing serious risk crop contamination and toxicity. Several methodologies are to remediate soil contamination, including the use amendments such as biochar. This work evaluated effects biochar combined different fertirrigations (water, conventional fertilizer solution, or solution c...