scholarly journals COMBINED BIOMASS UTILIZATION SYSTEM

2021 ◽  
Vol 88 (3) ◽  
pp. 36-40
Author(s):  
Viacheslav Morozov ◽  
Ivan Obodovskyi
Keyword(s):  
Energy Production ◽  
Closed Loop ◽  
Anaerobic Fermentation ◽  
Thermal Processes ◽  
Biomass Waste ◽  
Biomass Utilization ◽  
Heating Systems ◽  
Fermentation Processes ◽  
Pilot Fuel ◽  
Different Origins

The purpose of this study is to analyze existing technologies and optimize their operation in a closed-loop production and use of biomass fuel based on existing chemical-biological technologies of biochemical processing of biomass and its anaerobic fermentation processes. The article presents a fundamentally new scheme of biomass utilization of different origins, the implementation of this scheme of utilization of household, sewage, industrial and technological biomass waste will solve simultaneously the problem of preserving the environment in an environmentally friendly condition, to obtain during processing energy sources thermal energy to ensure the flow of biochemical and thermal processes in the installation, and to produce pilot fuel for its use in the processes of heat production of decentralized heating systems and energy production of small and medium-sized settlements, private estates and cottages.

Recent trends in biochar integration with anaerobic fermentation: Win-win strategies in a closed-loop

2021 ◽  
Vol 149 ◽  
pp. 111371
Author(s):  
A. Naresh Kumar ◽  
Pavani Dulanja Dissanayake ◽  
Ondrej Masek ◽  
Anshu Priya ◽  
Carol Sze Ki Lin ◽  
...  
Keyword(s):  
Closed Loop ◽  
Anaerobic Fermentation ◽  
Recent Trends

scholarly journals GHG Emissions and Efficiency of Energy Generation through Anaerobic Fermentation of Wetland Biomass

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6497
Author(s):  
Robert Czubaszek ◽  
Agnieszka Wysocka-Czubaszek ◽  
Piotr Banaszuk
Keyword(s):  
Life Cycle Analysis ◽  
Energy Supply ◽  
Energy Production ◽  
Energy Input ◽  
Fossil Fuel ◽  
Anaerobic Fermentation ◽  
Ghg Emissions ◽  
Biogas Plant ◽  
Biogas Energy ◽  
Wet Fermentation

We conducted the Life Cycle Analysis (LCA) of energy production from biogas for maize and three types of wetland biomass: reed Phragmites australis, sedges Carex elata, and Carex gracilis, and “grassy vegetation” of wet meadows (WM). Biogas energy produced from maize reached over 90 GJ ha−1, which was more than four times higher than that gained from wetland biomass. However, an estimation of energy efficiency (EE) calculated as a ratio of energy input to the energy produced in a biogas plant showed that the wet fermentation (WF) of maize was similar to the values obtained for dry fermentation (DF) of sedge biomass (~0.30 GJ GJ−1). The greenhouse gases (GHG) emissions released during preparation of the feedstock and operation of the biogas plant were 150 g CO2 eq. kWhel.−1 for DF of sedges and 262 g CO2 eq. kWhel.−1 for WF of Phragmites. Compared to the prevailing coal-based power generation in Central Europe, anaerobic digestion (AD) of wetland biomass could contribute to a reduction in GHG emissions by 74% to 85%. However, calculations covering the GHG emissions during the entire process “from field to field” seem to disqualify AD of conservation biomass as valid low-GHG energy supply technology. Estimated emissions ranged between 795 g CO2 eq. kWhel.−1 for DF of Phragmites and 2738 g CO2 eq. kWhel.−1 for the WM and, in most cases, exceeded those related to fossil fuel technologies.

scholarly journals Optimization of Charcoal Production Process from Woody Biomass Waste: Effect of Ni-Containing Catalysts on Pyrolysis Vapors

Catalysts ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 191 ◽  
Author(s):  
Jon Solar ◽  
Blanca Caballero ◽  
Isabel De Marco ◽  
Alexander López-Urionabarrenechea ◽  
Naia Gastelu
Keyword(s):  
Energy Production ◽  
Treatment Phase ◽  
Woody Biomass ◽  
Producer Gas ◽  
Charcoal Production ◽  
Biomass Waste ◽  
Screw Reactor ◽  
Low Temperature Pyrolysis ◽  
Vapor Treatment ◽  
Very High

Woody biomass waste (Pinus radiata) coming from forestry activities has been pyrolyzed with the aim of obtaining charcoal and, at the same time, a hydrogen-rich gas fraction. The pyrolysis has been carried out in a laboratory scale continuous screw reactor, where carbonization takes place, connected to a vapor treatment reactor, at which the carbonization vapors are thermo-catalytically treated. Different peak temperatures have been studied in the carbonization process (500–900 °C), while the presence of different Ni-containing catalysts in the vapor treatment has been analyzed. Low temperature pyrolysis produces high liquid and solid yields, however, increasing the temperature progressively up to 900 °C drastically increases gas yield. The amount of nickel affects the vapors treatment phase, enhancing even further the production of interesting products such as hydrogen and reducing the generated liquids to very low yields. The gases obtained at very high temperatures (700–900 °C) in the presence of Ni-containing catalysts are rich in H2 and CO, which makes them valuable for energy production, as hydrogen source, producer gas or reducing agent.

scholarly journals The Impact Of Subsidy Policy On Biogas Plants In Slovakia

2015 ◽  
Vol 4 (1) ◽  
pp. 14-16 ◽  
Author(s):  
Ján Lajda ◽  
Zuzana Lajdová ◽  
Peter Bielik
Keyword(s):  
Energy Production ◽  
Anaerobic Fermentation ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Energy Sources ◽  
Huge Amount ◽  
Subsidy Policy ◽  
Biogas Plants ◽  
The Impact ◽  
The Eu

Abstract Recently, renewable energy sources (RES) have become very popular all over the EU. Subsidy policies have provided huge amount of money flowing into the sector which were necessary for its development. In Slovakia, favourable legislation was one of triggers for building biogas plants using anaerobic fermentation for biogas and further electric energy production. This paper examines how subsidy policy has stimulated biogas sector over the years and the consequences arising from the legislation.

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