Abstract Background The reliance on chemical inputs to support high yields is the Achilles’ heel of modern crop production. soil organic matter management as old agriculture itself. Recently, use soluble humic substances plant growth promoters has been brought attention due their effects nutrient uptake and water efficiency. Humic applied directly at low concentrations can trigger different mol...

Minimidochium parvum LPSC # 548, a fungus isolated from litter floating on waters of Río Santiago (Provincia de Buenos Aires, Argentina) polluted with industrial effluents and crude-oil, was grown as a shaking culture on a C-limited medium to evaluate its ability to produce extracellular laccase. The effect of anthracene, CuSO4 · 5H2O, ethanol, guaiacol, humic acids, Kraft lignin, MnSO4 · H2O, ...

Experiments in batch equilibrium system were carried out to evaluate the importance of physical and chemical factors determining the sorption efficiency of humic substances (HS) on aquifer material, which has been used for artificial recharge of groundwater (ARG) in drinking water production. Results showed that an increase of the amount of clay in the aquifer material and a decrease of pH in w...

In this study, the start-up of a lab-scale OLAND RBC was examined. After 221 days of operation, a maximum nitrogen removal rate of 2092 mg N/L.d or 6261 mg N/m.d and a removal efficiency of about 91% were observed. During six operational periods, different supplements were added to the influent and several operational variables were manipulated. The influence of adding hydroxylamine, Dranco com...

A composting experiment was carried out to assess the best parameters as indicators for degree of compost maturity and to determine humification indices for practical use. The effect of humic acids extracted on soil microorganisms growth was also simultaneously investigated in vitro under axenic conditions. The parameters used were oxidizable carbon (Co), alkaline-extractable carbon (Cex), humi...