scholarly journals AN ANALYSIS OF AUGMENT THE BIOGAS PRODUCTION EFFICIENCY UNDER DIFFERENT FEEDING INTERVAL OF WASTE PRODUCTS

2021 ◽  
pp. 1
Author(s):  
Most Nipa ◽  
Muckta Khan ◽  
Roman Ryndin ◽  
Alimul Islam ◽  
Shamima Akhter ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Biogas Production ◽  
Waste Products

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.

Enhancement of biogas production efficiency using appropriate low‐temperature pretreatments of municipal treatment plants' excess sludge

2018 ◽  
Vol 38 (3) ◽  
pp. e13072
Author(s):  
Mehdi Rafiee ◽  
Elaheh Salehi ◽  
Khashayar Sharifi ◽  
Amir H. Mohammadi ◽  
Aliasghar Rohani ◽  
...  
Keyword(s):  
Low Temperature ◽  
Production Efficiency ◽  
Biogas Production ◽  
Excess Sludge

The effect of thermochemical pre-treatment on biogas production efficiency from kitchen waste using a novel lab scale digester

2019 ◽  
Vol 28 ◽  
pp. 140-152 ◽  
Author(s):  
Farid Haghighat Shoar ◽  
Reza Abdi ◽  
Bahman Najafi ◽  
Sina Faizollahzadeh Ardabili
Keyword(s):  
Production Efficiency ◽  
Biogas Production ◽  
Kitchen Waste ◽  
Pre Treatment

scholarly journals Influence of Temperature on Biogas Production Efficiency and Microbial Community in a Two-Phase Anaerobic Digestion System

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 133 ◽  
Author(s):  
Shiwei Wang ◽  
Fang Ma ◽  
Weiwei Ma ◽  
Ping Wang ◽  
Guang Zhao ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Anaerobic Digestion ◽  
Production Efficiency ◽  
Biogas Production ◽  
Two Phase ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Acidogenic Phase ◽  
Methanogenic Phase

In this study, the influence of temperature on biogas production efficiency and the microbial community structure was investigated in a two-phase anaerobic digestion reactor for co-digestion of cow manure and corn straw. The results illustrated that the contents of solluted chemical oxygen demand (SCOD) and volatile fatty acid (VFA) in the acidogenic phase and biogas production in the methanogenic phase maintained relatively higher levels at temperatures ranging from 35–25 °C. The methane content of biogas production could be maintained higher than 50% at temperatures above 25 °C. The microbial community structure analysis indicated that the dominant functional bacteria were Acinetobacter, Acetitomaculum, and Bacillus in the acidogenic phase and Cenarchaeum in the methanogenic phase at 35–25 °C. However, the performances of the acidogenic phase and the methanogenic phase could be significantly decreased at a lower temperature of 20 °C, and microbial activity was inhibited obviously. Accordingly, a low temperature was adverse for the performance of the acidogenic and methanogenic phases, while moderate temperatures above 25 °C were more conducive to high biogas production efficiency.

scholarly journals The Review of Biomass Potential for Agricultural Biogas Production in Poland

2019 ◽  
Vol 11 (22) ◽  
pp. 6515 ◽  
Author(s):  
Katarzyna Anna Koryś ◽  
Agnieszka Ewa Latawiec ◽  
Katarzyna Grotkiewicz ◽  
Maciej Kuboń
Keyword(s):  
Rural Areas ◽  
Food Industry ◽  
Biogas Production ◽  
Agricultural Waste ◽  
Storage Conditions ◽  
Waste Products ◽  
Biomass Residues ◽  
Biogas Plants ◽  
Biomass Potential ◽  
Food Residues

Adequate management of biomass residues generated by agricultural and food industry can reduce their negative impacts on the environment. The alternative use for agricultural waste is production of biogas. Biomass feedstock intended as a substrate for the agricultural biogas plants may include energy crops, bio-waste, products of animal and plant origin and organic residues from food production. This study reviews the potential of selected biomass residues from the agri-food industry in terms of use for agricultural biogas production in Poland. The most common agri-food residues used as substrates for biogas plants in Poland are maize silage, slurry, and distillery waste. It is important that the input for the agricultural biogas installations can be based on local wastes and co-products that require appropriate disposal or storage conditions and might be burdensome for the environment. The study also discusses several limitations that might have an unfavourable impact regarding biogas plants development in Poland. Given the estimated biomass potential, the assumptions defining the scope of use of agricultural biogas and the undeniable benefits provided by biogas production, agricultural biogas plants should be considered as a promising branch of sustainable electricity and thermal energy production in Poland, especially in rural areas.

Codigestion of manure and industrial organic waste at centralized biogas plants: process imbalances and limitations

2008 ◽  
Vol 58 (7) ◽  
pp. 1521-1528 ◽  
Author(s):  
H. B. Nielsen ◽  
I. Angelidaki
Keyword(s):  
Fatty Acids ◽  
Industrial Waste ◽  
Volatile Fatty Acids ◽  
Biogas Production ◽  
Process Conditions ◽  
Process Data ◽  
Waste Products ◽  
Inadequate Knowledge ◽  
Biogas Plants ◽  
High Concentrations

The present study focuses on process imbalances in Danish centralized biogas plants treating manure in combination with industrial waste. Collection of process data from various full-scale plants along with a number of interviews showed that imbalances occur frequently. High concentrations of ammonia or long chain fatty acids is in most cases expected to be the cause of microbial inhibitions/imbalances while foaming in the prestorage tanks and digesters is the most important practical process problem at the plants. A correlation between increased residual biogas production (suboptimal process conditions) and high fractions of industrial waste in the feedstock was also observed. The process imbalances and suboptimal conditions are mainly allowed to occur due to 1) inadequate knowledge about the waste composition, 2) inadequate knowledge about the waste degradation characteristics, 3) inadequate process surveillance, especially with regard to volatile fatty acids, and 4) insufficient pre-storage capacity causing inexpedient mixing and hindering exact dosing of the different waste products.

scholarly journals Problems of estimation of production efficiency and use of pellets

2018 ◽  
Vol 7 (4) ◽  
pp. 226-234
Author(s):  
Максим Ванин ◽  
Maksim Vanin
Keyword(s):  
High Performance ◽  
Production Efficiency ◽  
Investment Project ◽  
Fuel Oil ◽  
Project Implementation ◽  
Residential Areas ◽  
Waste Products ◽  
Complete Replacement ◽  
Fuel Pellets ◽  
Financial Strength

One of the directions of development of enterprises of the timber processing complex today is their modernization, which includes a complete replacement of obsolete equipment for modern high-performance, automated analogues. Obviously, at the same time, the capacity of production, the volume of output, is substantially increased, which leads to an increase in production waste. To solve the problem of their rational use, we propose to introduce a technology for the production of biofuel (fuel pellets), based on the process of crushed waste products pressing. The proposed project includes construction of a workshop for production of pellets with a capacity of 50 thousand tons per year, their packaging and storage. The description of the technological process with the identification of a number of its stages is given, the economic justification of the investment project efficiency is fulfilled, the project implementation schedule is developed, the main performance indicators are calculated and the possible risks associated with the project implementation are identified. The presented calculations testify to sufficient financial strength of the project and its financial solvency. There are two options for using the produced products. The first is generally accepted, based on the export orientation of pellets and their supply to the ever growing European market. The second one is an alternative one, envisaging construction or modernization of obsolete boiler houses and their transfer to cheaper, biologically clean wood fuel. The proposed alternative approach is aimed at solving existing problems in the field of ecology and the energy industry. The use of pellets will significantly reduce the environmental impact caused by coal or fuel oil as a fuel, and can also solve the problem of providing lower-cost energy to remote enterprises and residential areas.

scholarly journals Integration of Catalytic Biofuel Production and Anaerobic Digestion for Biogas Production

2021 ◽  
pp. 125-131
Author(s):  
G. Hurst ◽  
M. Peeters ◽  
S. Tedesco
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Biofuel Production ◽  
Chicken Manure ◽  
Solid Residue ◽  
Low Carbon ◽  
Waste Products ◽  
Low Carbon Economy ◽  
Promising Solution ◽  
Management Method

AbstractThe drive towards a low carbon economy will lead to an increase in new lignocellulosic biorefinery activities. Integration of biorefinery waste products into established bioenergy technologies could lead to synergies for increased bioenergy production. In this study, we show that solid residue from the acid hydrolysis production of levulinic acid, has hydrochar properties and can be utilised as an Anaerobic Digestion (AD) supplement. The addition of 6 g/L solid residue to the AD of ammonia inhibited chicken manure improved methane yields by +14.1%. The co-digestion of biorefinery waste solids and manures could be a promising solution for improving biogas production from animal manures, sustainable waste management method and possible form of carbon sequestration.

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