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 Digested residue as a fertilizer after the mesophilic process of anaerobic digestion

2011 ◽  
Vol 51 (No. 6) ◽  
pp. 262-266 ◽  
Author(s):  
N. Voća ◽  
T. Krička ◽  
T. Ćosić ◽  
V. Rupić ◽  
Ž. Jukić ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Pathogenic Bacteria ◽  
Biogas Production ◽  
Raw Materials ◽  
Chicken Manure ◽  
Plant Production ◽  
Household Waste ◽  
Biogenic Elements ◽  
Pig Manure ◽  
Thermophilic Microorganisms

The aim of this paper is to determine the difference in quality of the digested residue after the process of anaerobic digestion by using different input raw materials. The research was conducted in the Republic of Austria on four facilities for biogas production. The raw materials used for biogas production were chicken manure, pig manure, Sudan grass and organic household waste. The research included chemical analysis and bacteriological tests of the samples taken. It was found that the digested residue in all of the samples, all of which are mildly alkaline, contains a low level of dry matter, 70% of which is organic matter. Biogenic elements were present in moderate concentration; the values of heavy metals were within approved limits. This analysis leads to the conclusion that the digested residues of all input materials can be used in agricultural production, especially so in plant production and grassland cultivation. Mesophilic and thermophilic microorganisms were found in the digested residue samples, but there were no cryophilic microorganisms and no pathogenic bacteria.

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 The Effectivity of Marine Bio-activator and Surimi Liquid Waste Addition of Characteristics Liquid Organic Fertilizer from Sargassum sp.

2017 ◽  
Vol 19 (3) ◽  
pp. 309 ◽  
Author(s):  
Putri Wening Ratrinia ◽  
Uju Uju ◽  
Pipih Suptijah
Keyword(s):  
Raw Materials ◽  
Organic Fertilizer ◽  
Liquid Waste ◽  
Optimum Concentration ◽  
Decomposition Process ◽  
Bacterial Isolates ◽  
Optimum Time ◽  
Total N ◽  
Physical Chemical ◽  
Materials Used

<p>Abstract<br />Organic fertilizer is highly recommended for soil and plant because it can improve the productivity and repair physical, chemical, and biological of soil. Sargassum sp. and surimi liquid wastes contain organic matter and nutrient needed by plants and soils. The addition of marine bio-activator which contains bacterial isolates from litter mangrove serves to accelerate the composting time and increases the activity of microorganisms in the decomposition process. The purpose of this study was to determine optimum time and the best formulation of decomposition process organic fertilizer. Raw materials used a waste of seaweed Sargassum sp., marine bio-activator and surimi liquid waste from catfish (Clarias sp.). The research was conducted six treatments control, Sargassum sp. + marine bio-activator, surimi liquid waste , Sargassum sp. + marine bio-activator + surimi liquid waste 80%, 90%, 100%. All treatments were fermented for 9 days and analysed the C-organic, total N, C/N ratio, P2O5, K2O on days 0, 3, 6 and 9. The results showed the optimum fermentation period was on the 6th day. The most optimum concentration of surimi liquid waste added was at a concentration of 90%, with characteristics of the products was C-organic 0.803±0.0115%, total N 740.063±0.0862 ppm, C/N ratio 10.855±0.1562, P2O5 425.603±0.2329 ppm, K2O 2738.627±0.2836 ppm.</p>

scholarly journals Innovations in anaerobic digestion: a model-based study

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Karol Postawa ◽  
Jerzy Szczygieł ◽  
Marek Kułażyński
Keyword(s):  
Mathematical Model ◽  
Anaerobic Digestion ◽  
Production Efficiency ◽  
Biogas Production ◽  
Biogas Plant ◽  
Methane Content ◽  
Pig Manure ◽  
Pig Slurry ◽  
Production Chain ◽  
The Impact

Abstract Background Increasing the efficiency of the biogas production process is possible by modifying the technological installations of the biogas plant. In this study, specific solutions based on a mathematical model that lead to favorable results were proposed. Three configurations were considered: classical anaerobic digestion (AD) and its two modifications, two-phase AD (TPAD) and autogenerative high-pressure digestion (AHPD). The model has been validated based on measurements from a biogas plant located in Poland. Afterward, the TPAD and AHPD concepts were numerically tested for the same volume and feeding conditions. Results The TPAD system increased the overall biogas production from 9.06 to 9.59%, depending on the feedstock composition, while the content of methane was slightly lower in the whole production chain. On the other hand, the AHPD provided the best purity of the produced fuel, in which a methane content value of 82.13% was reached. At the same time, the overpressure leads to a decrease of around 7.5% in the volumetric production efficiency. The study indicated that the dilution of maize silage with pig manure, instead of water, can have significant benefits in the selected configurations. The content of pig slurry strengthens the impact of the selected process modifications—in the first case, by increasing the production efficiency, and in the second, by improving the methane content in the biogas. Conclusions The proposed mathematical model of the AD process proved to be a valuable tool for the description and design of biogas plant. The analysis shows that the overall impact of the presented process modifications is mutually opposite. The feedstock composition has a moderate and unsteady impact on the production profile, in the tested modifications. The dilution with pig manure, instead of water, leads to a slightly better efficiency in the classical configuration. For the TPAD process, the trend is very similar, but the AHPD biogas plant indicates a reverse tendency. Overall, the recommendation from this article is to use the AHPD concept if the composition of the biogas is the most important. In the case in which the performance is the most important factor, it is favorable to use the TPAD configuration.

scholarly journals Biogas from Anaerobic Digestion as an Energy Vector: Current Upgrading Development

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2742
Author(s):  
Raquel Iglesias ◽  
Raúl Muñoz ◽  
María Polanco ◽  
Israel Díaz ◽  
Ana Susmozas ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Business Models ◽  
Biogas Production ◽  
Raw Materials ◽  
Vector Current ◽  
Energy System ◽  
Transport Sector ◽  
Environmentally Sustainable ◽  
Legislative Framework ◽  
Materials Used

The present work reviews the role of biogas as advanced biofuel in the renewable energy system, summarizing the main raw materials used for biogas production and the most common technologies for biogas upgrading and delving into emerging biological methanation processes. In addition, it provides a description of current European legislative framework and the potential biomethane business models as well as the main biogas production issues to be addressed to fully deploy these upgrading technologies. Biomethane could be competitive due to negative or zero waste feedstock prices, and competitive to fossil fuels in the transport sector and power generation if upgrading technologies become cheaper and environmentally sustainable.

scholarly journals Green Packaging from Consumer and Business Perspectives

2021 ◽  
Vol 13 (3) ◽  
pp. 1356
Author(s):  
Gonzalo Wandosell ◽  
María C. Parra-Meroño ◽  
Alfredo Alcayde ◽  
Raúl Baños
Keyword(s):  
Sustainable Development ◽  
Raw Materials ◽  
Research Activity ◽  
Word Clouds ◽  
Climate Action ◽  
Green Packaging ◽  
Materials Used ◽  
Societal Challenge ◽  
Corporate Social ◽  
The Impact

Sustainable development is a global objective that aims to address the societal challenge of climate action, the environment, resource efficiency, and raw materials. In this sense, an important strategy is the promotion of green packaging, that is, the use of sustainable materials and designs for the packaging of goods. In recent years, many research works have been published in the specialised area covering the different perspectives and dimensions of green packaging. However, to our knowledge, no previous investigations have analysed the research activity on green packaging from business and consumer perspectives. The present study intends to fill this gap by analysing all of the publications found in the Scopus database with the help of visual analytic tools, including word clouds and Gephi network visualization software. More specifically, our study analyses the impact of green packaging from business and consumer viewpoints, including some specific issues such as the design and materials used in green packaging, green packaging costs, marketing strategies and corporate social responsibility related to green packaging, and the impact of green packaging in waste management, the circular economy, logistics, and supply chain management. The results obtained reveal the growing interest of scholars and researchers in all of these dimensions, as is made patently clear by the increasing number of journal publications in recent years. The practical implications of this study are significant, given the growing awareness among companies and consumers about the importance of the promotion of sustainable development through green packaging alternatives. More specifically, the results of this research could be very useful for all of those agents who are interested in learning about the main lines of research being developed in the field of green packaging.

scholarly journals PEMANFAATAN LIMBAH CAIR TAHU DAN DAUN GAMAL (Gliricidia sepium) SEBAGAI PUPUK ORGANIK CAIR DENGAN METODA FERMENTASI DENGAN AKTIVATOR EM4

1930 ◽  
Vol 8 (01) ◽  
pp. 127-135
Author(s):  
Hasmalina Nasution ◽  
Henny D J ◽  
Ulsanna Laira
Keyword(s):  
Fermentation Process ◽  
Anaerobic Fermentation ◽  
Organic Fertilizer ◽  
Harmful Effect ◽  
Liquid Waste ◽  
Gliricidia Sepium ◽  
Fermentation Time ◽  
Quality Requirements ◽  
Industry Waste ◽  
Phosphorus And Potassium

Liquid organic fertilizer is organic fertilizer in a liquid preparation as apart or all of from organic compound such as plant, animal, and industry waste, solid or liquid phase Nutrients contained therein form of a solution that is so fine that is easily absorbed by plants, though the leaves or stems. Organic fertilizer is one of solution to recovery physical, chemical and biological soil mineral from harmful effect at synthetic fertilize. Liquid fertilizer is obtained from the fermentation process solid first and then proceed with the extraction and liquid anaerobic fermentation process.In the fermentation process, the role of microbes largely determine the resulting product.The aim of this study was to determine the potential of liquid waste out as a liquid organic fertilizer with the addition of leaves of Gliricidia plants with a variation of 200 gr and 400 gr to increase mocro and micro nutrients with EM4 bacteria activator by fermentation procces. Macro nutrients result show Nitrogen 1250,57 ppm, phosphorus 1626,51 ppm potasium 2987,45 ppm, C-organic 8550 ppm, the ratio of C/N 7, and micro nutrients (Fe, Cu, Mn) C organic result Fe 57.99 ppm, Cu 0.30 ppm, Mn 2.83 ppm in the optimum fermentation time of 5 days with additional variations Gliricidia leaves 400 g. Macro nutrient of Organic fertilizer produced meets the quality requirements of the regulation which has set the levels of nitrogen, phosphorus and potassium in the amount of <2% or <20000, C organic ≥ 4% (40000 ppm), the ratio of C / N ≥ 4 ppm. Micro nutrients result do not meet the quality requirements of the agriculture minister No.28/Permentan/OT.140/2/2009. quality regulations for, and metal 100-1000 ppm.

scholarly journals Monitoring Soil Enzymes Activity before and after Animal Manure Application

Agriculture ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 166 ◽  
Author(s):  
George F. Antonious ◽  
Eric T. Turley ◽  
Mohammad H. Dawood
Keyword(s):  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Soil Enzymes ◽  
Organic Fertilizer ◽  
Chicken Manure ◽  
Enzymes Activity ◽  
Native Soil ◽  
The Impact ◽  
Soil Enzymes Activity

Soil enzymes (urease, invertase, acid and alkaline phosphatase) activity in the rhizosphere of field-grown tomato plants were used to monitor the impact of soil amendments (SA) and SA mixed with biochar on soil microbial activity four months after addition of amendments. The soil treatments were sewage sludge (SS); horse manure (HM); chicken manure (CM); vermicompost (worm castings); commercial inorganic fertilizer; commercial organic fertilizer; and no-mulch (NM) native soil used for comparison purposes. Soil treatments also were mixed with 10% (w/w) biochar to investigate the impact of biochar on soil enzymes activity. The results showed a significant increase in soil urease and invertase activities after incorporation of SA to native soil. Vermicompost and HM were superior in increasing urease and invertase activity four months after their addition to native soil. Alkaline phosphatase activity fluctuated among the soil treatments, revealing some obstruction of its activity. SS amended with biochar increased acid phosphatase activity by 115% four months after SS addition. Other than alkaline phosphatase, organic manure enhanced soil biological activity (microbial biomass and release of enzymes), indicating that the use of manures, rather than inorganic fertilizers, in crop production is an affordable and sustainable agricultural production system.

scholarly journals The comparison of single and double cut harvests on biomass yield, quality and biogas production of Miscanthus × giganteus

2019 ◽  
Vol 65 (No. 7) ◽  
pp. 369-376
Author(s):  
Marta Kupryś-Caruk ◽  
Sławomir Podlaski
Keyword(s):  
Dry Matter ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Lignin Content ◽  
Soluble Sugars ◽  
Water Soluble ◽  
Miscanthus Giganteus ◽  
Yield Quality ◽  
The Impact

The aim of the research was to determine the impact of double-cut harvest system on yield, as well as on suitability of Miscanthus × giganteus biomass for ensiling and biogas production. Biomass was harvested at the end of June (harvest I) and at the beginning of October (harvest II, regrowth). A single-cut regime at the end of October was also conducted. Biomass from harvests I and II was ensiled and subjected to anaerobic fermentation. The total dry matter (DM) yield from double-cut harvest system was similar to the DM yield from one-cut harvest, but two harvests per year had a positive effect on chemical composition of the biomass. C/N ratio and lignin content in the biomass from harvest I was lower compared to the single-cut biomass. Double harvest biomass was susceptible to ensiling, however, the biomass from harvest I characterized by low dry matter and water soluble sugars content resulted in poorer quality of the obtained silage (butyric acid was present). There were no significant differences between the methane yields obtained from ensiled biomass from harvests I and II.

scholarly journals Effects of Different Pre-processing Methods on Dry Anaerobic Fermentation of Sugarcane Leaves and Pig Manure

2020 ◽  
Vol 145 ◽  
pp. 02065
Author(s):  
Xiaohong Huang ◽  
Jing Jiao ◽  
Jihua Du ◽  
Zunxiang Li
Keyword(s):  
Loading Rate ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Environmental Issues ◽  
Pig Manure ◽  
Production Volume ◽  
Volume Loading ◽  
Processing Methods ◽  
Long Time ◽  
Fermentation Period

Using agricultural wastes for anaerobic fermentation to produce biogas can not only realize the resource utilization of the wastes, but also prevent the environmental issues caused by straw burning. Sugarcane leaves contain waxy layer, which will cause problems such as difficulty in degradation, long-time fermentation and low biogas production. This paper studies the effects on three pre-processing methods of adding rush rot agent, natural retting for 7 days and water moisture for 24 hours of dry anaerobic fermentation of sugarcane leaves and pig manure. The results show that natural retting for 7 days has the advantage of daily biogas production when the fermentation period is less than 20 days, but this method is not obviously different from that of water moisture for 24 hours. When taking total biogas production volume and volume loading rate as the indicators, water moisture for 24 hours is the best pre-processing method for dry anaerobic fermentation of sugarcane leaves and pig manure when the fermentation period is more than 20 days.

Sign in / Sign up

Export Citation Format

Share Document