Vermitechnology is an effective composting method, which transforms biomass into nutrient-rich organic fertilizer. Mature vermicompost is a renewable organic product containing humic substances with high biological activity. The aim of this study was to assess the chemical characteristics and the bioactivity of humic acids isolated from different vermicomposts produced with either cattle manure...

We used a continuous labeling method of naturally C-depleted CO2 in a growth chamber to test for rhizosphere effects on soil organic matter (SOM) decomposition. Two C3 plant species, soybean (Glycine max) and sunflower (Helianthus annus), were grown in two previously differently managed soils, an organically farmed soil and a soil from an annual grassland. We maintained a constant atmospheric C...

Filtration drying of grinded sunflower stems as the unit operation technological line for solid biofuel production has been proposed. Theoretical aspects heat transfer processes during filtration have analyzed. The effect agent velocity increase from 0.68 to 2.05 m/s on intensity established. values coefficients calculated basis thin-layer experimental data and equation . Calculated correlated ...

One of the options for reducing harmful emissions in production heat energy is use biomass, including combination with industrial waste (for instance, coal and coke dust). Recent studies demonstrate that a mix biomass makes it possible to obtain bio-coal briquette better characteristics, which motivating factor search alternative sources from local agricultural waste. The aim this research stud...

Vanessa Smith, “Wasted Gifts: Robert Louis Stevenson in Oceania” (pp. 527–551) This essay takes some letters from Stevenson’s travels the South Seas as a starting point to rethink both oeuvre and Victorian cross-cultural encounter. Reengaging with Marcel Mauss’s classic theorization of gift exchange, suggests that encounters Oceanic systems exchange were experienced terms not cultural dominance...

Woody biomass is suggested as a substitute for fossil fuels to achieve sustainable development. However, transitioning the land purpose produce woody entails investment and tradeoff between wood pellet production current utilities created by land, hindering willingness of private landowners. To many forest landowners, trees residues considered unprofitable transport would be left in without oth...

this study reports the removal of cadmium from wastewater in batch mode, using two carbonaceous adsorbents viz. sunflower head carbon (shc) and sunflower stem carbon (ssc) prepared from waste biomass of sunflower. the adsorbents were characterized by fourier transform infrared spectroscopy (ft-ir), scanning electron microscopy (sem) and energy dispersive x-ray analysis (edx). the results of bat...

introduction: arsenic is a highly toxic metalloid in group 15 of periodic table. the information on environmental behaviour of arsenic, however, is still scarce. contamination of soils and water with arsenic and antimony due to their widespread industrial application and mining activities has raised serious environmental concerns. nearly all arsenic-contaminated soils results from human activit...