scholarly journals Operating tests analysis of liquid biologically degradable waste processing by anaerobic fermentation

2012 ◽  
Vol 60 (1) ◽  
pp. 39-44
Author(s):  
Jiří Fryč ◽  
Tomáš Vítěz ◽  
Tomáš Lošák
Keyword(s):  
Food Processing ◽  
Anaerobic Fermentation ◽  
Energy Content ◽  
Biogas Production ◽  
Raw Materials ◽  
Input Material ◽  
Glycerine Water ◽  
Food Processing Waste ◽  
Fermentation Technology ◽  
Suitable System

This study concerns the analysis of operating anaerobic fermentation systems of agricultural biogas station and implementing a suitable system enabling the use of liquid biowaste. Based on the comparison of the technological solutions and operating parameters of specific equipment a system enabling the utilisation of biowaste has been designed. The tests made use of liquid substrates commercially offered to biogas station operators. The study evaluates practical measurements at an agricultural biogas station in order to evaluate the biogas production from these substrates and the efficiency of transforming input material to usable energy. The use of such treated substrates for the anaerobic fermentation technology may have a substantial influence on the volume of dosed energy crops. The mixture of input substrates consisting of liquid cattle excrements, silage corn, liquid food-processing waste, animal waste and glycerine water was experimentally validated. This mixture was compared with the operation using liquid cattle excrements and silage corn. It was concluded that the proposed composition of input raw materials makes it possible to increase the production of biogas and el. power. On the other hand, it was identified that the energy content of the input raw materials is not optimally transformed into usable energy. Therefore, the proposed mixture of input materials with biowaste is not recommended for use.

scholarly journals Analysis of production tests in processing the mixture of solid and liquid biologically degradable wastes by anaerobic fermentation

2012 ◽  
Vol 60 (3) ◽  
pp. 19-24
Author(s):  
Jiří Fryč ◽  
Josef Los ◽  
Tomáš Lošák
Keyword(s):  
Food Processing ◽  
Anaerobic Fermentation ◽  
Energy Content ◽  
Biogas Production ◽  
Raw Materials ◽  
Liquid Waste ◽  
Input Material ◽  
Glycerine Water ◽  
Fermentation Technology ◽  
Suitable System

This study concerns the analysis of operating anaerobic fermentation systems of agricultural biogas station and implementing a suitable system enabling the use of a mixture of solid and liquid biowaste. The tests made use of liquid substrates commercially offered to biogas station operators. The study evaluates practical measurements at an agricultural biogas station in order to evaluate the biogas production from these substrates and the efficiency of transforming input material to usable energy. The use of such treated substrates for the anaerobic fermentation technology may have a substantial influence on the volume of dosed energy crops. The mixture of input substrates consisting of liquid cattle excrements, silage corn, solid and liquid waste from food processing, animal waste and glycerine water was experimentally validated. This mixture was compared with the operation using liquid cattle excrements and silage corn. It was concluded that the proposed composition of input raw materials makes it possible to increase the production of biogas and el. power. On the other hand, it was identified that the energy content of the input raw materials is not optimally transformed into usable energy. This is why the proposed mixture of input materials with biowaste is not recommended for use at the used proportion.

scholarly journals Study of regime parameters of the fermenter in the production of biogas from animal liquid waste materials

2021 ◽  
Vol 286 ◽  
pp. 02010
Author(s):  
Penka Zlateva ◽  
Angel Terziev ◽  
Krastin Yordanov
Keyword(s):  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Raw Materials ◽  
Organic Fertilizer ◽  
Liquid Waste ◽  
Ambient Air ◽  
Chicken Manure ◽  
Pig Manure ◽  
Materials Used ◽  
The Impact

The focus of the present study is a small biogas power plant for anaerobic fermentation of several types of animal waste raw materials used for biogas production. The impact of some of the characteristics of substances such as composition, temperature, humidity, and pH of the mixture in the bioreactor has been considered. The above is vital for optimizing the fermentation process, and also to improve the biogas production process. The plant is located in Northeastern Bulgaria and the raw liquid manure is supplied by several neighboring small farms. The annual quantities of raw waste are as follows: cow manure - 1252 t / a; chicken manure - 427 t / a and pig manure - 639 t / a. The manure is collected in a preliminary tank and then pumped to the bioreactor. The fermenter itself is a hermetically sealed and thermally insulated tank where constant temperature is maintained. It is equipped with a stirring system, which helps the mixing and homogenization of the substrate. The tests were performed during three charges of the installation. The fermentation takes approximately 23 up to 25 days. The experiments were performed during the summer and autumn seasons when the ambient air temperature varies from 28 to 45 °C. The biogas can be used as an energy carried as the obtained organic fertilizer is suitable for agriculture purposes.

scholarly journals International overview on waste to biofuel options with a focsu on waste potentials in Germany and funding incentives in the EC

2013 ◽  
Vol 14 (2) ◽  
pp. 183-191
Keyword(s):  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Raw Materials ◽  
Ghg Emissions ◽  
Small Scale ◽  
Double Counting ◽  
Industrialized Countries ◽  
Fischer Tropsch ◽  
The Past ◽  
Ghg Reduction

Biofuels represent a possibility to reduce greenhouse gas (GHG) emissions within the transport sector. In this context the sustainability of biofuels, especially so called 1st generation biofuels led to controversial discussions in the past. Biofuels from waste and residues represent a well suited but quantitative limited alternative due to their sustainability. At an international level, different approaches for converting waste and residues into biofuels can be found. Developing countries in general use classic transesterification of waste fats to produce biodiesel. Technically advanced options such as pyrolysis, gasification, Fischer-Tropsch-Diesel, anaerobic fermentation and distillation, as well as biogas production coupled with biomethane upgrading, are mostly found in industrialized countries. Within this study, different waste to biofuel options are reviewed ranging from small scale to industrial scale and take into account used raw materials, technological application and (potential) GHG-reduction. Further the potential of several wastes and residues for gasification processes and synthesis of biofuels in Germany is described. Biofuel from waste offers promising funding incentives because of the “double counting” according to 2009/28/EC and the switch in mandatory blending from an amount based quota to a GHG-based blending quota in 2015.

scholarly journals Biogas composition depending on the type of plant biomass used

2011 ◽  
Vol 57 (No. 4) ◽  
pp. 137-143 ◽  
Author(s):  
M. Herout ◽  
J. Malaťák ◽  
L. Kučera ◽  
T. Dlabaja
Keyword(s):  
Hydrogen Sulphide ◽  
Fermentation Process ◽  
Plant Biomass ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Raw Materials ◽  
Biogas Plant ◽  
Raw Material ◽  
Maize Silage ◽  
High Concentrations

The aim of the work is to determine and analyse concentrations of individual biogas components according to the used raw materials based on plant biomass. The measurement is focused on biogas production depending on input raw materials like maize silage, grass haylage and rye grain. The total amount of plant biomass entering the fermenter during the measurement varies at around 40% w/w, the rest is liquid beef manure. The measured values are statistically evaluated and optimised for the subsequent effective operation of the biogas plant. A biogas plant operating on the principle of wet anaerobic fermentation process is used for the measurement. The biogas production takes place during the wet fermentation process in the mesophile operation at an average temperature of 40°C. The technology of the biogas plant is based on the principle of using two fermenters. It follows from the measured results that maize silage with liquid beef manure in the ratio of 40:60 can produce biogas with a high content of methane; this performance is not stable. At this concentration of input raw material, the formation of undesirable high concentrations of hydrogen sulphide occurs as well. It is shown from the results that the process of biogas production is stabilised by the addition of other components of plant biomass like grass haylage and rye grain and a limitation of the formation of hydrogen sulphide occurs. It follows from the results that the maize silage should form about 80% w/w from the total amount of the plant biomass used.

scholarly journals ENERGY SAVING OF MODULAR BUILDINGS WITH THE HELP OF BIOGAS TECHNOLOGIES

2021 ◽  
Vol 2021 (2) ◽  
pp. 82-94
Author(s):  
Vasyl Zhelykh ◽  
◽  
Yurij Furdas ◽  
Stepan Shapoval ◽  
Olena Savchenko ◽  
...  
Keyword(s):  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Raw Materials ◽  
Heat Fluxes ◽  
Raw Material ◽  
Methane Formation ◽  
Land Resources ◽  
Heat Flows ◽  
Main Factors ◽  
Fallen Leaves

Ukraine has significant land resources for agriculture and is able to provide its population not only with food but also with raw materials for bioenergy. The article presents a graph of heat capacities and the distribution of heat flows in a bioreactor. The dependences for determining the heat fluxes of flat and cylindrical surfaces are presented. The article outlines the present state of utilization of fallen leaves of trees. The method of utilization by anaerobic fermentation is proposed. The design of bioreactors and the main factors influencing the methane formation process are considered. The methodology for calculating the biogas production process is presented. The productivity of the bioreactor has been determined, depending on the temperature of the raw material and the time of hydraulic resistance

scholarly journals Analysis of the composition and formation of biogas produced during the processing of biological waste by anaerobic digestion technologies

2010 ◽  
Vol 58 (5) ◽  
pp. 171-178 ◽  
Author(s):  
Lubomír Hnilica ◽  
Jiří Fryč ◽  
Bořivoj Groda
Keyword(s):  
Anaerobic Digestion ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Raw Materials ◽  
Energy Crops ◽  
Operational Parameters ◽  
Operation System ◽  
Data Set ◽  
Sufficient Energy ◽  
Biogas Plants

This work compares the operating system of anaerobic fermentation of agricultural biogas plants with realization using biowaste. It deals with the operation system of anaerobic fermentation of agricultural biogas plants and implement an appropriate system to enable the use of biowaste. Based on the comparison of technological solutions and operational parameters of specific sites has been designed to allow the system biowaste were made a practical experiment to verify the assumption of increased biogas production. In experiments used substrates, which are industrially produced from the available bio-wastes, treated and then provide to operator of biogas plants. The work was carried out practical measurements to verify the production of biogas from different substrates. Utilize of nominal electric power using biowaste amounted up to 97.66%. Processing of such modified substrates in anaerobic digestion technology can greatly affect the amount of energy crops. Benefit of waste is governed primarily by such projects, where is the problem of ensuring sufficient energy crops. The proposed composition of raw materials also allows the implementation of the existing ope­ra­tion of anaerobic digestion. Operational data on real operations demonstrate the real possibility of further development of the area and secondly the use of biogas plants as well as in the preparation of suitably prepared substrates for the operators. The entire data set underwent a complete statistical analysis. Differences between variants were statistically significant.

scholarly journals Effects of Different Material Total Solid on Biogas Production Characteristics

2018 ◽  
Vol 38 ◽  
pp. 02006
Author(s):  
Yu-Ming Sun ◽  
Xiao-Mei Huang ◽  
Yin-Hu Kang
Keyword(s):  
Fossil Fuels ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Raw Materials ◽  
Rapid Development ◽  
Clean Energy ◽  
Total Solid ◽  
Biogas Yield ◽  
The Past ◽  
Production Characteristics

In China, livestock manure emission has resulted in severe pollution to the environment and it is an efficient spreading agent of diseases. For this reason, the biogas has gotten a rapid development in the past few decades. As a kind of renewable and clean energy, many studies have indicated the prospect of biogas to replace fossil fuels in the future. However, the methane industrial production process is unstable due to various factors. Therefore, it is necessary to enhance the biogas fermentation efficiency. In this paper, the influences of the raw materials and the total solids (TS) concentration on biogas production characteristics are studied, where the utilization of raw materials can be reflected by the biogas production rate in the results. The results showed the anaerobic fermentation cycle is prolonged and biogas yield increases, but the utilization decreases with TS increases.

scholarly journals Sicilian potential biogas production

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
Antonio Comparetti ◽  
Pierluigi Febo ◽  
Carlo Greco ◽  
Santo Orlando ◽  
Kestutis Navickas ◽  
...  
Keyword(s):  
Food Processing ◽  
Energy Production ◽  
Food Industry ◽  
Biogas Production ◽  
Raw Materials ◽  
Animal Husbandry ◽  
Animal Manure ◽  
Large Animal ◽  
Olive Oil Mills ◽  
By Products

This study is aimed at predicting the Sicilian potential biogas production, using the Organic Fraction of Municipal Solid Waste (OFMSW), animal manure and food industry by-products, in a region where only one biogas plant using MSW and one co-digestion plant are nowadays available. The statistical data about OFMSW, the number of animals bred in medium and large farms and the amounts of by-products of food processing industries were evaluated, in order to compute the Sicilian potential biogas and energy production. The OFMSW produced in Sicily, that is 0.8 million tons ca. per year (37% of MSW), could be used in a bio-reactor, together with other raw materials, for Anaerobic Digestion (AD) process, producing biogas and “digestate”. Moreover, 3.03 million tons ca. of manure, collected in medium and large animal husbandry farms (where cows, pigs and poultry are bred), and 350 thousand tons ca. of by-products, collected in food processing industries (pomace from olive oil mills and grape marc from wineries), might be used for AD process. The Sicilian potential biogas production from the AD of the above raw materials is 170.2 millions of m3, that is equal to 1023.4 GWh of energy per year, of which 484 GWh from animal manure, 303 GWh from OFMSW and 236.4 GWh from food industry by-products. The highest biogas production is in the province of Palermo (35.6 millions of m3), Ragusa (30.8 millions of m3) and Catania (22.8 millions of m3), having a potential energy production of 213.8, 185 and 137 GWh, respectively.

scholarly journals Evaluation of automated anaerobic fermentation processes as in the case of mould infected maize

2013 ◽  
pp. 81-86
Author(s):  
Györgyi Bíró ◽  
Lili Mézes ◽  
János Borbély ◽  
János Tamás
Keyword(s):  
High Efficiency ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Raw Materials ◽  
Continuous Production ◽  
Optimal Solution ◽  
Energy Utilization ◽  
Raw Material ◽  
Energy Potential ◽  
Cereal Products

In Hungary the renewable energy utilization is planned to achieve 13% by 2020. Biogas production is one of the fields with the largest energy potential. Achieving high efficiency during continuous production despite the mixed and variable composition of input materials is the most common problem which the newly built biogas plants using agricultural raw materials have to deal with. The first experimental reactors at the Department of Water and Environmental Management were built 12 years ago. Control and automation of the four separated bioreactors were executed with ADVANTECH GENIE 3.0 software which granted pre-programmed measurement and points of intervention for pH, temperature, CH4, CO2, H2S, and NH3. The system became out-of-data, therefore in 2010 it has been redesigned and tested. The system is controlled by Compair Proview SCADA (Supervisory Control and Data Acquisition) software running on Linux platforms. The Fusarium infection caused serious yield-losses in cereal production in 2010. In the case of cereal products, which non-utilizable as forage seems an optimal solution is utilizing as biogas raw material. The raw material was based on the Fusarium infected maize. In the recent publication infotechnological and technological experiences of the pilot test period are evaluated as well as direction of future development is defined.

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