biomass

One of the most essential characteristics of biochar (charcoal) is its higher heating value. The higher heating value for the dry ashless state of 35 samples of raw vegetable materials and charcoal was determined to establish the dependencies between the quality of the raw material and the produced biochar samples. Biochar production was carried out using modernized equipment under the patented technology. Mathematical and graphical dependencies of the experimental and calculated higher heating values for the vegetable raw materials to produce pyrolysis gas and charcoal were established.

The results of studies on the possible producing valuable substances from cyanobacterial biomass are presented. It is shown that the main source of hyaluronic acid is the cyanobacteria from surface waters known as Microcystis aeruginosa and cyanobacterial associations of actinomycetes. The possibility of hyaluronic acid extraction has been experimentally proven. The dynamics of its quantitative characteristics were determined.

The main indicators of the filtration drying process of barley brewer’s spent grains for industrial drying, as well as the parameters of the necessary drying equipment, were calculated. To compare the effectiveness of the filtration method of drying barley brewer’s spent grain, the drying was calculated for a similar technical task in a rotary dryer. It was found that filtration drying can reduce the required drying time by more than 10 times while increasing the specific energy consumption for removing 1 kg of moisture by 16.8% compared to drying in the rotary dryer.

The article is devoted to the study of the current state of domestic legal regulation of bioenergy and the prospects for its improvement.

The production and use of renewable energy in various industries and sectors pursues the goal of ensuring energy independence and security, decarbonization, achieving the maximum level of climate neutrality etc.

This article presents the results of experimental studies investigating the energy consumption per 1 kg H2O required for the filtration drying of beet pulp.  The optimal process parameters for the removal of 1 kg of moisture from the dried beet pulp were determined, which included the height of the layer of dried material H=120 mm, the thermal agent temperature T = 90 °C and the thermal agent velocity v0 = 1.76 m/s.  Regarding these parameters, the total energy consumption for drying by the filtration method from the initial moisture content of 88.12 % wt.

The article is devoted to the study of the state, problems and prospects of ensuring the sustainable use of woody forest biomass.

Most of the bioenergy resources used in Ukraine for energy production are woody forest biomass. At the same time, there is a dangerous tendency to exceed the use of woody forest biomass above its potential.

The norms governing the use of woody forest biomass contain various normative legal acts of Ukraine. However, the general concept of “woody forest biomass” is not defined in domestic legislation.

The article describes the results of experimental studies of the kinetic regularities of beet pulp drying by the filtration method. The influence of the main process parameters on the rate of moisture removal, including the height of the wet layer of material H (0,04 m, 0,08 m, 0,12 m, 0,16 m), temperature T (60 °C, 70 °C, 80 °C, 90 °C) and the velocity of the thermal agent v0 (1.24 m/sec, 1.76 m/sec, 2.29 m/sec, 2.82 m/sec), was investigated. The kinetic dependencies for the periods of complete and partial saturation of the thermal flow with moisture were derived.

In this work, the calculation of specific energy consumption for the process of the barley brewer’s spent grain filtration drying was investigated.

In this study, a novel, cost-effective and environmentally friendly activated carbon/chitosan hybrid material (ACCHM) was synthesized by incorporating surface properties of both the activated carbon derived from rice husk and chitosan extracted from “Black Tiger” shrimp shells to generate a highly functionalized porous material with enhanced Pb (II) adsorption capacity for water purification.

Among the large number of modern environmental problems in Ukraine, waste of wastewater treatment stations occupies a special place. During biological water treatment, the separated sludge deposits are sent to the silt fields, which are the biggest problem. Today, these fields reached their capacity three times over and pose a danger, the consequences of which go far beyond environmental problems and have grown into a chain of socio-economic, technical, medical-biological and moral-ethical problems.